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EK-P100E-SV-001

May 2000

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Document:	Rainbow User's Service Guide
Order Number:	EK-P100E-SV
Revision:	001
Pages:	144
Original Filename:

OCR Text

-digital equipment Srporation
&

First Edition, April 1985

© Digital Equipment Corporation 1985. All Rights Reserved.
The information in this document is subject to change without notice and sh&zfié not be construed as a commitment by Digital

géfé%&mé&i Csr;;{}ratfsa Digitai Equipment Corporation assumes no responsibility for any errors that may appear in this document.
WARNING: The Rainbow computer has been certified to comply with the limits.isg a Class B s&msgtzag device, pursuant to Subpart J

of Part 15 ofFCC Rules. Onl y peripherals (computer input/output devices, terminals, printers, etc.) certified to comply with the Class B
limits may be attached to this computer. Operation with noncertified peripherals may result in interference to radio and television reception.

. This EQfiififfiéfit generates-and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the
manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with

the limits fora Class B computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are
designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which

can be §§t§fnggé by turning the squioment off and on, the user is: efiza}mageé to try to correct the interference by one or more of the
faz &%?@g measures:
«

reorient the receiving aa{esaa

"= mave the computer:away:‘from the receiver
&

piug the computer into a different outlet so that ssmgfitef and receiver are on fiif’fa{éfit branch circuits.

i%%sgssafig the user should consult the dealer or an experienced radio/teievision technician for additional suggestions. The user may
find the following booklet prepared by the Federal C{;mmz;mc&kgms Céf‘i’éfi?éssffifi he%g;fifi

How_ to Identify and Resoive Radio-TV Interference Problems
This booklet is available from the US Government P:zntzng Gfi;e& Washifigtafi QC 20402.
Stock No. 004-000-00388-5.
The mamswz}% for this book was created using a DIGITAL Word ?fssessmg System and, via a transiation program, was automatically

typeset on DIGITAL's DECset Integrated Publishing Systém Book ‘proauction was done Dy cducationai Services Deveiopment and
Puplisning in Littleton and Mariboro, MA.

8@8’8‘”" is a trademark of Intel Corporation.
~80® is a registered tragemark of Zilog, Inc.

The following are trademarks of Digitali Equipment Corporaticn:

2020080

DEC
DECmate
DECsystem-10
DECSYSTEM-20

MASSBUS
POP
P/OS
Professional

DECUS
DECwriter

Rainbow
RSTS

Printed in U.S.A.

UNIBUS
VAX
VMS
VT

Work Processor

n—,

. R

Prefoce #HW“%*UW*U'UW‘&#&*“"flwfifl@W%*flWfififliWflflififififl'flfi*fiiUfififlfl“Ufl‘flflfl‘fl‘fififlflflfl(flflfifi“flfiflfllflfifl'fififlflflflfiflfl'w‘&“WW&OW&&NH”’HWU‘ v

Removal and Replacement INSITUCTIONS ...cuuucrueresssessssrnsscnsseeseseassermeensecnseenss
TSI

ImmmITImN,aMTTTTTMTM 8 7

Appendix B. Rainbow Computer PAMs .....ceeececncnsncsccsinsincssasnsnsnnes 121
!ndexwuuumuuuunucuunwuuuaunwmuuwaunuuuuuwmuwwuuwnuuwuuuwwnnwmfiuwfiuu&uwwunuwwnunwfiuuwuunnmunwnwwwuuwuunufiwww A 2 E R R 2] } 2 ;

Preface
This service guide provides instructions for removing
and replacing major parts of the RainoowTM computer.

Monitor messages identify failing parts when you turn
the computer on or run the computer selftest. Appendix A of this guide lists possible solutions to these
problems, and you should read it before replacing any

part.

- This manual is organized for removing and replacing
parts in a logical sequence, from the procedures vou
should do first to the procedures you should do last.
However, each removal and replacement procedure is
independent and you can begin with step 1 of any operation. After instailing a new part, use the test procedure on page 74 to check the installation.

If you need help at any time, call the appropriate Digital Help Line number listed on page 126. [f vou neeq
assistance in diagnosing a problem, Digital’s service
organization of 16,000 representatives worldwide is
ready to help.

Removal and Replacement Insiructi
Introduction
The Rainbow computer’'s design makes it easy for
users to remove and replace defective parts. You can
disconnect most major parts without using any tools.
Both the keyboard and the monitor are replaced as single units; you do not open them up. You can bring the
entire system unit to a service center for repair, or you
can remove its top cover and replace the failing diskette drive, power supply, fan assembly, system module, or other modules yourself.
-

CAUTION
Avoid static when handling computer
parts that have electronic components,
such as modules or language ROMs.
Keep these parts in their boxes or packing
material until you are ready to instail
them. Do not walk across a carpeted floor

while hoiding an unwrapped module or ROM.

Be sure to save all boxes and packing
material to return any defective parts.
Also, save all shipping boxes and protective cards for the diskette drives.
To find the instructions to help you remove or install a
failing part, use the table of contentsor the index.

SYSTEM UNIT
MONITOR
g

| w
W.w"

Keyboard Removal

Step 1. Remove any diskettes from the diskette
drives. Close the drive doors.

Step 2. Set the power switch to 0 (off) and unplug
the power cord.

Keyboard Removat
Step 3. Unplug the keyboard cable from the monitor.
Hold down the small tab and pull the cable straight out.

i"m"

;"m‘n

Step 4. Remove the two keyboard feet, if present,
and save them to put on vour new keyboard.

Keyboard Removal

Step 5. Remove the magenta label strip from under
the clear plastic cover and save it to install on your
new keyboard. Do not try to remove the red strip from

the same place; it is glued down.

Step 6. Pack the keyboard in its original packing
material and shipping box.
NOTE

Refer to page 5 to install a new keyboard.

Keyboard instaillation
Step 1.

Unpack the new keyboard from its shippingbox.

~ Step 2. Make sure the power switch on the system
unit is set to 0 (off).

Keyboard Installation
Step 3.

Make sure the keyboard cable is installed in

the groove in the bottom of the keyboard.

Step 4.

Install the keyboard feet, if desired.

K@VMamm insiailation
Step 5. Place the keyboardin front of the mmmmr or
the system unit.

SYSTEM UNIT
MONITOR

Step 6.

monitor.

Plug the k&yb@ard cable into the back of the

Monitor Removai
Step 1. Remove any diskettes from the diskette
drives. Close the drive doors.

Step 2. Set the power switch to 0 (off) and unplug
the power cord.

~~~~~~~

Monitor Removai
i

Step 3. Unplug the keyboard cable from the monitor.
Hold down the small tab and pull the cabie straight out.

Step 4. Loosen the thumbscrews on the monitor
cable; then, disconnect the cable from the monitor.

NOTE
Pack the monitor in its original packing

material and shipping box.

i
i

Monitor Installation
Step 1.

Unpack the monitor from its shipping box.
"

Step 2.

Make sure the power @w:tmh on the system

unit is set to 0 (off).

”M\\/'i/m

eh1i01]

Monim,r in,smflmmn
Step 3. Connect the monitor cable to the monitor.
Tighten the cable’s thumbscrews.

Step 4.

Plug the keyboard cable into the monitor.

o o

Removing System Unit from Floor Stand

Step 1. Remove any diskettes from the diskette
drives. Close the drive doors.

Step 2. Set the power switch on the system unit to
0 (off), then to 1 (on).

Removing System Unit from Floor Stand

Step 3. Wait a few seconds until you hear a beep
from the keyboard; then, set the power ammh to
0 (off).

Step 4. Insert the protective card, saved when you
msmflm your system, in diskette drive A (and diskette
rive C, if present). Be sure the printing on the card
faces l&ft Close the drive doors.

Removing System Unit from Floor Stand

Step 5.

Unplug the power cord from the wall socket.

Open the rear door of the floor stand and remove the
power cord and all cables from the system unit.

UNPLUG POWER CORD

TURN THUMBSCREWS
TO LOOSEN

Step 6.

stand.

Lift and slide the system unit out of the floor

Removing System Un i t frecm Floor Stand

System Module (Main Board) Removal

Step 1. Remove any diskettes from the diskette
drives. Close the drive doors.

Step 2. If vou have a floor stand, remove the system
unit (page 12).
g
Step 3.

Set the power switch to 0 (off).

System Module (Main Board) Removal
Step 4. Unplug the power cord from the wall socket.
Then, remove it and all other cables from the back of
the system unit.

REMOVE POWER
CORD

| TURN THUMBSCREWS
TO LOOSEN

Step 5. Remove the cover by pulling the cover
release tabs toward you and out until they lock in
place. Lift the cover straight up and put it aside.

System Module (Main Board) Removal
Step 6. Remove the power cable from the power
supply; then, remove it from the system module.
NOTE
|
If you have a hard disk drive, go to

Step 7. If a hard disk drive cable is present, remove
it from the system module before removing the power
cable from the system module. Leave the ground clip
attached.

step 7.

HARD DISK
DRIVE CABLE
!

i
g

;

¥
i

it-

)

SYSTEM
MODULE

i ie

System Module (Main Board) Removal
Step 8.

If diskette drive C/D is present, remove its

Step 9.

flat cable from the system module by pulling on the

pull tab. Leave the cable’s ground clip attached.

cROUND <M
CLIP

="
=00

Use the pull tab and remove the flat cable

for diskette drive A/B from the system module. Leave

the ground clip attached.

—~

| GROUND>

jcue

System Module (Main Board) Removal
Step 11. If you are replacing the system module,
remove and save any options that you have so that you
can install them on the new system module.

Remove the RX50 controller board (page 21).

Step 10. Use a coin and loosen each thumbscrew on
the rear panel of the system module slightly. Repeat
until you can slide the module out of the system unit.

Remove the memory hoard (page 22).

Remove the extended communications board
(page 23).

Remove the hard disk controller board (page 24).

Remove the color/graphics board (page 25).

6.
v SYSTEM
MODULE

Remove the language ROM if you are using a key-

board other than that used in North America and
Australia (page 26).
NOTE
Refer to page 30 to install the system
module,

TURN
TO LOOSEN

RX50 Controller Board Removal and Replacement
Removal

Step 1.

Remove the system module (page 16).

Step 2. Press the top of the standoffs and connector
clip away from the RX50 controller board to loosen it.
Then, lift the board out of its connector.

STANDOFF

CONNECTOR CLIP

Replacement
Step 1.

Place the RX50 controller board on the

standoffs and connector and press the corners of the
b?ard so the standoffs and connector clip lock it in

place.

Step 2. Press the RX50 controller board until it is
firmly seated in the connector on the system module.

Step 3.

Install the system module (page 30).
STANDOFF

CONNECTOR CLIP

VVVVVVVVVV

wwww

Memory Board Removal and Replacement
Replacement

Removal

Step 1.

Remove the system module (page 16).

Step 2. Press the top of each standoff outward; then,
lift the memory board straight up, off the standoffs and
out of its connector.

Step 1.

Align the connector on the memory board

with the connector of the same size on the system
module.

Step 2. Press the board down firmly at each standoff and at the connector. Make sure the connector is
secure.

Step 3.

STANDOEE

[Install the system module (page 30).

STANDOFF

extended Communications Board Removal and Replacement
Removal

Step 1.

Replacement

Remove the system module (page 16).

Step 2. Press the top of the standoffs outward to
loosen the extended communications board: then, lift it
out of its connectors.
Step 3.

If you also replace the system module,

remove the plastic option plate in the system module
rear panel and save it. (A new system module does not
have the plastic option plate.)

Step 1. Install the plastic option plate in the rear
panel of the system module.

Step 2. Hold the communications board componentside down. Fit the metal cable connectors in the openings on the rear panel of the system module aligning
the plastic connectors with those on the system
module.
Step 3.

Press the board down firmly at its plastic

connectors and standoffs. Make sure connectors are
secure.

Step 4.

OPTION PLATE

I’mtmfl the system module (page 30).

METAL

CABLE

CONNECTORS

COMPONENT-SIDE

DOWN \

PLASTIC
CONNECTORS

STANDOFF

CONNECTORS

Hard Disk Controller Board Removal and Replacement
Replacement

Removal

Step 1.

Remove the system module (page 16).

Step 2. Press the top of the standoffs outward to
loosen the board; then, lift the board straight up out of
its connectors.

Step 3. Save the spacer on the hard disk controller
board to install on the new board. For model PC100-A,
remove the black connector clip for use on the next
system module. Order new spacers (74-29790-01) if
needed.

STANDOFF

SPACER

Step 1.

Install the spacer on the hard disk controller

board. If the connector clip is missing, install one on
the system module.

Step 2. Hold the board component-side down and
align its connectors with the connectors of the same
size on the system module.

Step 3. Press the board down firmly at its connectors and standoffs. Make sure connectors are secure.
Step 4.

Install the system module (page 30).

STANDOFF

SPACER

COMPONENT-SIDE
DOWN
ot

. CONNECTOR CLIP

Color/Graphics Board Removal and Replacement
Removal
Step 1.

Replacement
Remove the system module (page 16).

Step 2. Press the top of the standoffs outward to

loosen the board; then, lift the board straight up out of
its connector.
|

Step 1.

Hold the board component-side down and

ififgfi;fi connector with the connector on the system

R
Step 2. Press the board down firmly at its connector
and standoffs. Make sure the connector is secure.

Step 3.

Install the system module (page 30).

Language ROM Removal
The language ROM is the plug-in chip that transforms
the keys you press on the keyboard into the characters
the system displays on the screen.

Step 1.

Remove the system module (page 16).

Step 2. Remove any option board [extended communications (page 23) or hard disk controller (page 24)]
that covers the language ROM.

NOTE

The model PC100-A system module has a
language ROM as shown opposite. If you
have a model PC100-B, it does not have
this ROM, and you should go to step 4.
w

CAUTION

Avoid static. Do not walk across a
carpeted floor while holding the ROM
when it is not in its box. Rather, place the
old ROM in the box that contained the

new ROM.

LANGUAGE ROM
(MODEL PC100-A)

Step 3. Hold the ROM by its tabs and pull it firmly
out of the socket. Do not pry the ROM from only one
end or vou may damage the socket.

==
[ [
[ o r

Language ROM Removal
Step 4.

If you have a model PC100-B system mod-

ule, use a small flat screwdriver or ROM removal tool
(part number 74-30612-01) to gently lift each end of

ROM 1 until you can lift it out of its socket.

CAUTION

Avoid static. Do not walk across a
carpeted floor while holding the ROM
when it is not in its box. Rather, place
the old ROM in the box that contained
the new ROM.

Language ROM Replacement
Step 1. If you have a model PC100-A system module, align the new language ROM over the socket on
the system module.
NOTE

If you have a model PC100-B, go to

step 3.

Step 2. Seat the ROM firmly in the socket by pressing down only on the ROM tabs.
NOTE
When you install a new language ROM,
the cover on the new ROM comes off
automatically.

LANGUAGE ROM WITH COVER

{

LANGUAGE

ROM COVER

PRESS TAB
FIRMLY

LANGUAGE ROM
SOCKET

(MODEL PC100-A)

Language ROM Replacement
Step 3. To install a new language ROM in a model
PC100-B, first gently press the ROM in its conductive
foam against the system module to remove any static.

Step 5. Alternately, press the top of the ROM at
each end until it seats firmly in its socket.

Step 4. Remove the ROM from the foam, straighten
any bent pins, and align the new ROM so that its notch
faces the same direction as the notches of all the other
chips.

communications board (page 23) or hard disk controller
board (page 24).

CONDUCTIVE
FOAM

STRAIGHTEN PINS AGAINST A TABLETOP

Step 6.

If previously removed, install the extended

Step 7.

Install the system module (page 30).

System Module (Main Board) Replacement
Step 1. Place the system module in the guides and
slide it into the system unit. Tighten each thumbscrew
slightly; then, use a coin to tighten each screw alternately until each screw is tight.

SYSTEM
UNIT

Step 2. Connect the diskette drive A/B flat cable to
its connector on the system module. Make sure the
cable’'s ground clip is attached.

—e

”'

,‘

MMMW‘

MODULE

SYSTEM

TURN TO TIGHTEN

SYSTEM —

| MODULE

System Module (Main Board) Replacement
Step 3.

If present, connect the flat cable from dis-

kette drive C/D to its connector on the system module.
Make sure the cable is seated securely at the diskette
drive end and that its ground clip is attached.

Step 4.

Gmmumm%L7

CLIP

SYSTEM
MODULE

Plug the power cable into the connector on

the system module.

SYSTEM
MODULE

System Module (Main Board) Replacement
Step 5. If present, plug the hard disk drive cable
firmly into its connector on the system module.
Make sure the cable’s ground clip is attached.

< HARD DISK DRIVE
CABLE MUST
_/
LIE FLAT

<
GROUND

CLIP

Step 6.

Plug the power cable firmly into power supply.

System Module (Main Board) Replacement
o

Step 7. If a hard disk drive is present, make sure its
cable lies flat across the diskette drive.

Step 8.

Place the cover on the system unit. Slide the

cover release tabs in and away from you until they
spring back, locking the cover. Try lifting the cover to
make sure it is secure.

GO TO PAGE 73 TO INSTALL THE CABLES.

CABLE MUST LIE
FLAT HERE

Diskette Drive Removal
Step 1. Remove any diskettes from the diskette
drives, and set the power switch to 0 (off).

Step 2. Set the power switch to 1 (on) to set the
diskette drive read mechanism at its starting position.
Wait a few seconds until you hear a beep from the
keyboard; then, set the power switch to 0 (off).

Diskette Drive Removal
Step 3. Insert the protective card in diskette drive A
(and diskette drive C, if present). Be sure printing on
card faces up (or left if the system unit is in a floor
stand). Close the diskette drive doors.

Step 4.

Unplug the power cord from the wall socket:

then, remove it and all other cables from the back of
the system unit, If the system unit is in a floor stand,
remove it (page 12).

UNPLUG POWER CORD

TURN THUMBSCREWS
TO LOOSEN

|
REMOVE POWER CORD
||

Diskette Drive A/B Removal

TO REMOVE DISKETTE DRIVE A/B, CONTINUE
TO REMOVE DISKETTE DRIVE C/D, CONTINUE
WITH STEP 7 (PAGE 37).
TO REMOVE THE HARD DISK DRIVE, CONTINUE

Step 5. Remove the cover by pulling the cover
release tabs toward vou and out until they lock in
place. Lift the cover straight up and put it aside.

Step 6. Unplug the 4-wire power cable from the top
of the diskette drive. Then, disconnect the flat cable
from the drive and detach its ground clip from the

ground lug. With a pencil, press down on the latch in

front of the diskette drive and slide the drive out of the
system unit.
|

4-WIRE CABLE

FLAT CABLE AND GROUND CLIP

Diskette Drive C/D Removal
Step 7.

Remove the cover by pulling the cover

release tabs toward you and out until they lock in
place. Lift the cover straight up and put it aside.

Step 8. Unplug the 4-wire power cable from the top
of diskette drive C/D. Then, disconnect the flat cable
from the drive and detach its ground clip from the
ground lug. With a pencil, press down on the latch in

front of the diskette drive and slide the drive out of the

system unit.

4-WIRE CABLE

FLAT CABLE AND GROUND CLIP

Hard Disk Drive Removal

Step 9. Remove the cover by pulling the cover
release tabs toward you and out until they lock in
place. Lift the cover straight up and put it aside.
|

Step 10. Pull the ground clip of the hard disk drive
cable off the ground lug on the power supply. Then,
press the latch in front of the hard disk drive and slide
the drive partially forward.

GROUND CLIP

Y
A

Hard Disk Drive Removal
Step 11. Unplug the 4-wire cable from the back of
the disk drive. Remove the hard disk drive cable
straight off the disk drive to avoid damaging its two
cable connectors. Do not remove these connectors at

CAUTION
Do not drop or bump the hard disk drive.
It is a delicate precision instrument, subject to damage from sudden shock or

an angle to the disk drive. Slide the disk drive out of
the system unit and place it in its original packing
material for transport.

HARD @m% mmw CABLE

movement.,

NOTE
Before replacing the disk drive, replace
the hard disk drive cable with another
cable to see if the cable is causing a problem. See steps 12 through 15.
NOTE
To install the hard disk drive, go to page 48.

Hard Disk Drive Cable Removal
Step 12. To remove the hard disk drive cable, first,
unplug the power cable from the power supply.

Step 13. Unplug the hard disk drive cable from the
&ymmé ;:mdui& and detach its ground clip from the
ground

lug.

HARD DISK
TM
DRIVE CABLE TM

Hard Disk Drive Cable Installation
Step 14. To install the hard disk drive cable, route
the cable so it lies flat across the diskette drive. Then,
plug the hard disk drive cable firmly into its connector
on the system module. Last, connect the ground clip to
the ground lug.

mm DISK DRIVE TM
CABLE MUST )‘3

MODULE

Step 15.

Plug the power cable firmlyinto power supply.

To install the hard disk drive, go to page 48.

Diskette Drive A/B Installation

Step 1. Hold diskette drive A/B with its connector
sockets facing up and slide it into the tracks on the
system unit. Try to pull it out to make sure it 1s

Step 2. Plug the 4-wire cable into its socket on the
diskette drive.

CONNECTOR
SOCKETS

4-WIRE CABLE

Diskette Drive A/B Instailation
Step 3.

Connect the diskette drive flat cable to the

diskette drive and attach the cable’s ground clip to the
ground lug on the power supply. Make sure the other
end of this flat cable is connected to the system module.

Step 4.

Place the cover on the system unit. Slide the

cover release tabs in and away from you until they
spring back, locking the cover. Try lifting the cover to
make sure it is secure.

CONTINUE WITH PAGE 73.

FLAT CABLE

Diskette Drive C/D Installation
Step 1. Unplug the 4-wire power cable from diskette
drive A/B. Then, disconnect the flat cable from the top
of the drive and detach its ground clip from the power
supply. With a pencil, press down on the latch in front
of diskette drive A/B. Slide the drive forward, but do

Step 2. Hold diskette drive C/D with its sockets facing up and slide it partially into the system unit on its
tracks. Place the folded cable between the power supply and both diskette drives.

not remove it.

4-WIRE CABLE

ELAT CABLE AND GROUND CLIP|

FLAT CABLE (DISKETTE DRIVE C/D)

Diskette Drive C/D Installation
Step 3. Plug the 4-wire cable and the flat cable into
diskette drive C/D. Then, push both diskette drives into
the system unit. Pull on each to make sure they are
secure. Attach the cable’s ground clip to the ground lug
on the power supply.

4-WIRE CABLE

Step 4.

Make sure the other end of the flat cable for

diskette drive C/D is installed in its connector on the
system module and that its ground clip is attached.

FLAT CABLE AND GROUND CLIP |

GROUND
CLIP

SYSTEM
MODULE

Diskette Drive C/D Installation

Step 5. Plug the 4-wire cable into its socket on diskette drive A/B. Connect the flat cable to the diskette
drive and attach the ground clip to the ground lug on
the power supply.

4-WIRE CABLE

FLAT CABLE AND GROUND CLIP|

Step 6. If present, remove the filler panel from the
system unit cover. Place the cover upside-down,
unscrew the two Phillips screws, and remove the panel.

4-WIRE CABLE

Step 4. Make sure the other end of the flat cable for
diskette drive C/D is installed in its connector on the
system module and that its ground clip is attached.

FLAT CABLE AND GROUND CLIP }

SYSTEM
MODULE

Diskette Drive C/D Installation

Step 5. Plug the 4-wire cable into its socket on diskette drive A/B. Connect the flat cable to the diskette
drive and attach the ground clip to the ground lug on
the power supply.

4-WIRE CABLE

FLAT CABLE AND GROUND CLIP|

Step 6. If present, remove the filler panel from the
system unit cover. Place the cover upside-down,
unscrew the two Phillips screws, and remove the panel.

Diskette Drive C/D Installat i on
Step 7.

Place the cover on the system unit. Slide the

cover release tabs in and away from you until they
spring back, locking the cover. Try lifting the cover to
make sure it is secure.

CONTINUE WITH PAGE 73.

Hard Disk Drive Installation

Step 1.

Slide the hard disk drive partially into the

system unit on its tracks.

CAUTION

Be careful not to drop or bump the hard

disk drive. It 1s a delicate precision instrument, subject to damage from sudden
shock or movement.

Step 2. Connect the 4-wire cable to its connector on
the hard disk drive.
Step 3. Hold the front of the hard disk drive and
plug the hard disk drive cable straight onto its two
connectors on the back of the drive.

o
|

PWIRE CABLE

__HARD DISK DRIVE CABLE
o

A~
| [

Hard Disk Drive Installation
¥

Step 4.

Push, but do not slam, the hard disk drive to

install it fully in the system unit. Try pulling on it to
make sure it is secure.

Step 5.

Connect the ground clip of the hard disk

drive cable to the ground lug on the power supply.

NOTE
Make sure the hard disk drive cable lies
flat across the top of the diskette drive so
it will not interfere with the cover.

HARD DISK DRIVE

CABLE MUST LIE

Step 6.

unit cover.

If missing, install a filler panel in the system
W

NOTE
You can order a filler panel, part number

7;4;2717 4-01, from your local Digital sales

office.

Hard Disk Drive Installation

Step 7. Place the cover on the system unit. Slide the
cover release tabs in and away from you until they
spring back, locking the cover. Try lifting the cover to
make sure it 1s secure.

Power Supply Removal
Step 1. Remove any diskettes from the diskette
drives. Close the drive doors.

Step 2. If you have a floor stand, remove the system
unit (page 12).

Step 3.

Set the power switch to 0 (off).

Power Supply Removal
Step 4. Unplug the power cord from the wall socket;
then, remove m: and all other cables from the back of
the system unit.

REMOVE POWER

CORD

—
TURN THUMBSCREWS
TO LOOSEN

Step 5. Make sure the diskette drive doors are
closed. Remove the cover by pulling the cover release
tabs toward you and out until they lock in place. Lift
the cover straight up and put it aside.

Power Supply Removal
Step 6.

Remove the power cable from the power

supply; then, remove it from the system module.

Step 7. If diskette drive C/D is present, remove its
flat cable from the system module: then, detach its
ground clip.

If a hard disk drive cable is present, you

must remove it from the system module

before removing the power cable.

{ GROUND
SYSTEM

Power Supply Removal
Step 8. Use the pull tab and remove the flat cable
for diskette drive A/B from the system module; then,
detach its ground clip.

Step 9. Unplug the 4-wire cable from the top of diskette drive A/B. Detach the ground clip on the flat
cable from the power supply. Leave the flat cable con-

nected to the diskette drive and fold it over the top of
the diskette drive.

4-WIRE CABLE

FLAT CABLE AND GROUND CLIP i

Power Supply Qemmm
Step 10. Unplug the 4-wire cable from the top of
diskette drive C/D, if present. Detach the ground clip
on the flat cable from the power supply.

4-WIRE CABLE

FLAT CABLE AND GROUND CLIP|

Step 11. If you have a hard disk drive, pull the
ground clip of the hard disk drive cable off the ground
lug on the power supply. Then, press the latch in front
of the hard disk drive and slide drive partially forward.

———

GROUND CLIP

Power Supply Removal
Step 12. Unplug the 4-wire cable from the back of
the hard disk drive.

4-WIRE CABLE

Step 13. Squeeze the ends of the two fan assembly
plugs and unplug them from the power supply. The
plugs are tight so you will need to use some force to
squeeze them; however, DO NOT pull on their wires.

~POWER SUPPLY

FAN ASSEMBLY PLUGS

Power Supply Removal
Step 14. If your power supply has a 2-wire plug
going to a connector at the front of the fan assembly,
pull this plug out of its connector. Remove the wires
from any hold-down clip on the side of the fan assembly.

POWER SUPPLY

HOLD-DOWN

§<\

Step 15.

Pull down the latch on the side of the pow-

er supply (or slide the latch on the system unit toward
its rear), tilt the power supply up, and remove it from
the system unit.

OLD STYLE LATCH
- S—

/\\

FAN ASSEMBLY

}

Power Supply Installation

Step 1.

Step 2.

Identify the plug on the power cord.

Make sure that the plug on your power cord matches
that required for your wall receptacle.

o
NOTE

”

In North American countries, 115 volts is
common; 230 volts is common In most

other countries.

Check the voltage switch on the new power

supply. If necessary, use a pen to set the switch to the
correct setting.

In North American countries, 115 volts is
common; 230 volts is common in most

other countries.
s

“

CAUTION

An incorrect voltage setting can damage

your computer.

110 V/118V/120 V/125 V

110 V/115 V/120 v/128 V

IN NORTH
THE
AMERICA,
SWITCH 1S
ALREADY SET
AT 115V,

220 V/230 V/240 V

220 V/230 V/240 V
N

%& B,

iN OTHER

COUNTRIES,

—

THE SWITCH
SHOULD
ALREADY BE
SET TO 230 V.
IF NOT, SLIDE
S
THE 5W§TCH

TO 230 V.

" POWER SUPPLY

il / W
L

‘)

Power Supply Installation
Step 3.

Tilt the power supply and insert the angle

bracket into the slot in the system unit.

Step 4.

Press down on the power supply and lock the

latch. Try pulling up on the power supply to make sure
it i1s lock
in place.
ed

NEW STYLE LATCH

CLD STYLE LATCH
\

Power Supply Installation

Step 5. Connect the two fan assembly plugs to the
power supply.

mww SUPPLY

Step 6. If the fan assembly has another connector at
the front, plug the 2-wire plug from the power supply
into that connector. Otherwise, place this plug so it will
not interfere with installing the top cover.

HOLD-DOWN

FAN ASSEMBLY PLUGS

WW%W“

PowER

Power Supply Installation
Step 7. If you have a hard disk drive, plug its 4-wire
cable into the drive. Make sure the other cable connectors are securely attached to the drive.

Step 8.

Push, but do not slam, the hard disk drive

completely into the system unit. Pull on the hard disk
drive to make sure it is secure. Fasten the ground clip

of the hard disk drive cable to the ground lug on the
power supply.

GROUND CLIP
e

/| 4wire casLE

POWER SUPPLY

Power Supply Installation
Step 9. Plug the 4-wire cable into the top of diskette
drive C/D, if present.

Step 10. Fasten the ground clip on the diskette
drive C/D flat cable, if present, to the ground lug on
top of the power supply.

4-WIRE CABLE

POWER

GROUND CLIP

mm %‘”UG}:‘

éwwwfmflmu

!’ Dl oo, Y b=

SUPPLY

Power Supply Installation
Plug the 4-wire cable into the top of diskette drive A/B.

Step 12. Unfold the diskette drive A/B flat cable
from the top of the drive. Fasten the ground clip on
the diskette drive A/B flat cable to the ground lug on
top of the power supply.

4-WIRE CABLE

GROUND CLIP

Power Supply Installation
MR

Step 13. Plug the drive A/B flat cable into the
connector on the system module. Fasten its ground clip.

Step 14. Plug the diskette drive C/D flat cable into
the connector on the system module. Fasten its ground
clip to the ground lug.

'&mm

GROUND 3T

CLIP
SYSTEM
MODULE

| W

MODULE

)
]

]

1
i

]

N3 i

4
i

gtit

by
I

i
o

LA
i

Power Supply Installation
Step 15.

Plug the power cable into the system module.

Step 16. If present, plug the hard disk drive cable
firmly into its connector on the system module. Fasten
its ground clip to the ground lug.

<_HARD DISK DRIVE
LIE ?;*LAWZM

Power Supply Installation
Step 17. Plug the power cable firmly into power supply.

Step 18.

Place the top cover on the system unit.

Slide the cover release tabs in and away from you until
they spring back, locking the cover. Try lifting the cover to make sure it is secure.

Fan and Switch Assembly Removai
Step 1. Remove any diskettes from the diskette
drives. Close the drive doors.

Step 2. If you have a floor stand, remove the system
unit (page 12).

Step 3.

Set the power switch to 0 (off).

Fan and Switch Assembly Removal
Step 4. Unplug the power cord from the wall socket;
then, remove it and all other cables from the back of
the system unit.

e i

s
¢
[

Pod
;

REMOVE POWER
CORD

MBSCREWS

Step 5. Make sure the diskette drive doors are
closed. Remove the cover by pulling the cover release
tabs toward you and out until they lock in place. Lift
the cover straight up and put it aside.

Fan and Swiich Assembly Removal
Step 6. Squeeze the ends of the two fan assembly
plugs and unplug them from the power supply. The
plugs are tight so you will need to use some force;
however, DO NOT pull on their wires.
|

m;m SUPPLY

Step 7.

If your fan assembly has another connector

at the front, pull the 2-wire plug from the power supply
out of the connector. Remove the wires from any holddown clip on the side of the fan assembly.

HOLD-DOWN
Cl

LIP

f’fl

FAN ASSEMBLY PLUGS

el
zZzal—

Fan and Switch Assembly Removal

Step 8.

Remove the three screws from the top of

the fan assembly with a Phillips screwdriver. Rock and
lift the fan assembly out of its slots in the system unit.

AC FAN ASSEMBLY (PC100-A)

DC FAN ASSEMBLY (PC100-B}

Fan and Switch Assembly Replacement
Step 1.

Place the fan assembly in the slots in the

system unit.

Step 2. Install the three Phillips screws in the top of
the fan assembly.

AC FAN ASSEMBLY(PC100-A)

DC FAN ASSEMBLYI(PC100-B)

Fan and Switch Assembly Replacement

Step 3. Connect the two fan assembly plugs to the
power supply. If your fan assembly has another connec-

tor at the front, plug the two-wire plug from the power
supply into this connector. Place wires in hold-down

clip, if present.

FAN ASSEMBLY PLUGS

Step 4. Place the top cover on the system unit.
; Slide
the w cover release tabs in and away from you
| until they

spring back, locking the cover. Try lifting the cover to
make sure it is secure.

CONTINUE WITH PAGE 73.

Reconnecting the Computer
Step 1.

Make sure the power switch is set to 0 (off).

Step 2.

Connect the cables and the power cord pre-

viously removed from the system unit. Plug
the power
cord into the wall socket.
:

| TURN THUM

BSCREWS

TO TIGH
TE

E= |

POWER CORD

Testing the Computer After Removing
and Replacing a Unit
Step 1. Set the power switch to 1 (on). In a few
seconds, vou will hear a beep; then, the computer will
display the Main System Menu.

Step 2. If you see diagonal lines, a white background, or no display, you can correct these conditions
by adjusting the brightness and contrast controls on the

back of the monitor.

Rainbow 100
version 04.03L
Copyright (¢} Digital Equipment Corporation 1983

Prave b BOC O Ww;‘%} or T

HBs00

A = start from Drive A
B = startfrom Drive B

= start from Drive ©

= start from Drive D

= start from Drive W*

= execute Selt Test

= entar Terminal Mode

CONTRAST
CONTROL
_

Testing the Computer After Removing and Replacing a Unit

Step 3.

If the display is still blank, or if you see a

Step 4.

message at the top of the screen, go to page 87 for help.

A.
B.

Rainbow 100
Version 04 030
Copyright (¢} Digital Equipment Corporation 1983

Press A, B C. 0 W 'S, or T
A = start from Drive A

8 = start from Drive B

C = start trom Drive C
D = start from Drive D
W = start from Orive W°

5 ¢ axecute Seif Test
T » enter Terminal Mode

N
*NOT ON THE PC100
-A

Insert diskettes.

Insert a spare diskette (label up) in diskette drive

A and close its door.

Insert a spare diskette, label down, in diskette
drive B and close its door.

’T@stmgfhe Computer After Removing and Replacing a Unit
B

Step 5.

display

Type S on the keyboard. The computer will

YOUR RAINBOW COMPUTER

HAS PASSED THE TEST SUCCESSFULLY.

TESTING
on your screen.

NOTE

After one or more minutes (depending on the computer's memory size), you will hear a whir and a beep.
Then, the computer displays the Main System Menu.

For a more extensive test, run the Rainbow diagnostic diskette. Continue with
page 77.

d|i gliltlall

Rainbow 100

Version 04.030
Copynght (¢} Digital Equipment Corporation 1983
-

“NsoOWwr

Praggs A B, C. DWW, 5 or ¥

"NOT ON THE PC100-A

= start from Drnve A

= start trom Drive B

= gtart fraom Drive

= start from Drve O
= Start from Drve W»
= wimoute Sel Tegt
= snter Tarminal Mode

Testing the Computer After Removing and Replacing a Unit
Prerequisite: After you turn on the computer, the system must display the Main System Menu. If it is not
displayed, press the Set-Up key; then, hold down the
Ctrl key and press the Set-Up key again. If the computer still does not display the Main System Menu,
refer to Appendix A (page 87).

Step 1. Insert the Rainbow diagnostic diskette into
diskette drive A and close its door.

NOTE
The diagnostic diskette can be started
from any diskette drive should you suspect a drive is not working correctly.

Step 2.

Type A on the keyboard. The system dis-

plays the Main Diagnostic Menu. If you have version
2.0 or greater, press the Help key for more informa-

tion on each choice.

If the system does not display the Main Diagnostic
Menu, go to page 87 for help.
’p""

Rainbow 100 Diagnostic Diskerte
VERSION 2.0 mo/daryr
Copyrignt (¢} 1983 Digital Equiprrent Corporation

t MAIN. DIAGNOSTIC MENU !
[1] TESTDRIVES A AND B
(2] TEST COMPUTER

[3] DISPLAY INDIVIDUAL TEST MENU

[4] INSTALL NEW DIAGNCSTIC

PERFORM ONE OF THE FOLLOWING g
"TYPE MENU NUMBER THEN PRESS (Return) [ ]
"PRESS (Help) FOR A MORE DESCRIPTIVE MENU
"PRESS (Set-Up) (Ctri/Set-Up) TO RESTART SYSTEM

Using the Diagnostic Diskette

Step 3. Choose the test you wish to run from the
Main Diagnostic Menu.
A.

Type 2 and press the Return key to check the
computer.

Typel and press the Return key to check diskette
drives A and B. Remove the diagnostic diskette and
insert a spare diskette that is not write-protected in
drives A and B, then press the Return key.

Follow the instructions on the screen. The first test
checks drives A and B and requires your help to
insert and remove diskettes. The other tests run
automatically and take about 10 minutes.

Follow the instructions on the screen.
4

DRIVES A AND B CHECK

“\‘

REMOVE DIAGNOSTIC DISKETTE AND INSERT SPARE DISKETTES INTD DRIVE A/B ~Return»

TTCAUTIONTT" SPARE DISKETTE DATA WILL BE CHANGED !« Feturn»
SUBTEST

1. INTERNAL REGISTER

SUBTEST
SUBTEST
SUBTEST

2. HEAD LOAD TIMING
3. INTERNAL LOOPBACK
4-RESTORE

SUBTEST
SUBTEST

6 MOTOR SPEED
7. SEEKS
8- FORCEDWRITE ERRORS

SUBTEST
SUBTEST
SUBTEST

9. WRITE SECTORS
10- FORCED READ SECTORS

SUBTEST

11-READSECTORS

[ DISK DRIVES|

PASS

MEMORY 8088
MEMORY [Z80)
MEMORY (BETAP

FadL
PmER
PASS

SUBTEST
SUBTEST

SUBTEST

SUBTEST
SUBTEST

SUBTEST

VIDEQ

PASE

COMM/PRINTER/KEYBOARD

PAES

MEMORY (BOBB/Z80)

PASS
P&SS

SYSTEM INTERACTION

1 - INTERNAL REGISTER
2 - HEAD LOAD TIMING
3 3. INTERNAL LOOPBACK
4 4. RESTORE5. HEADSTEP
6 6-MOTOR SPEED 7

SUBTEST 8 B.FORCED WRITE ERRORS
SUBTEST g 9-WRITE SECTORS
SUBTEST 10 FORCED READ ERRORS
SUBTEST 11 READ SECTORS

REWRITING SECTORS USED IN SUBTESTS

END OF TEST

INSERT DIAGNCOSTIC DISKETTE THEN PRESS <Return»

REWHRITING SECTORS USED IN SUBTESTS

END OF TEST

INSERT DIAGNOSTIC DISKETTE THEN PRESS « Return>

FAILURE: MAIN BOARD: MEMORY DOES NOT STORE DATA CORRECTLY

“TYPE P TO PROCEED OR L TO LOOP ON ERROR. THEN PRESS
& Return >
"PRESS
< Heipy» FOR MORE INFORMATION,

At the completion of the test, the system displays the

Main Diagnostic Menu followed by:

At the completion of the test, the system displays the
Main Diagnostic Menu followed by:

PREVIOUSLYRUNDRIVES A

PREVIOUSLY

ANDB TEST - PASSED (FAILED).

If an error occurs, testing stops and the system displays a message at the bottom of the screen. Press the
Help key for more information on an error message.

RUN

COMPUTER

TEST

PASSED

(FAILED).

Press the Help key for more information on any error
message.

Using the Diagnostic Diskette
C.

Type 3 and press the Return key to display the

individual test menu. Follow the instructions on the
screen. See pages 99 and 100 for a description of
each test.

At the completion of the test selected, the system displays the Main Diagnostic Menu followed by:
PREVIOUSLY

RUN

INDIVIDUAL

TEST

INDIVIDUAL TEST MENU|

wwwww

PASSED
TM

Rainbow 100 Diagnostic Diskette

Version 2.0 majda/yr

MEMORY (8088/280)

- (9]

KEYBOARD

{ 0]
I
{ I

COMMPRINTER EXT. LOOPBACK

B
AR

[

DISK SYSTEM

COMMPRINTERXEYBOARD PORT

MAIN DIAGNOSTIC MENU |

MEMORY [SET-UP)

SYSTEM INTERACTION

PRINTER CONFIDENCE

—
O

VIDEQ CONTROLLER

VIDED ALIGNMENT PATTERN

MEMORY (280)

5wl @ F B e P

—

[PERFORM ONE OF THE FOLLOWING &
" TYPE MENU NUMBER THEN PRESS <Return>

i e

' PRESS <Help> FOR A MORE DESCRIPTIVE MENU

" PRESS «Set-Up> «<CrlSet-Up> TO RESTART SYSTEM

" TYPE MENU NUMBER THEN PHRESS <Returns

" PRESS «<Heip> FOR A MORE DESCRIPTIVE MENU

" PRESS «Set-Up>

g}: ALy o e ¥ oM G

<Ctri/Set-Up» TO RESTART SYSTEM

8 FUELAT N L R

As each subtest of an individual test runs, the system
displays an execution time or count. Upon completion
of the subtest, the system displays “PASSED” or
“FAILED.” Any failure will stop the test and display a
message at the bottom of the screen. Follow the
instructions on the screen and, if necessary, press the
Help key for more information on a failure message.

If the computer does not respond, reset the computer.
First, press the Set-Up key, then hold down the Ctrl
key and press the Set-Up key again. If you cannot reset
the computer, set the power switch to 0, then to 1.

Using the Diagnostic Diskette

Type 4 and press the Return key to install a new

diagnostic on this diskette. This choice allows you to
add diagnostic tests for optional equipment that you
may add to your Rainbow computer. This choice
allows you to put all the tests on one diskette. Follow the instructions on the screen.

NOTE
You cannot use this feature if you have an
early Rainbow diagnostic diskette, part
numbers BL-T309A-BV or BL-T309B-BV.
Remove the write-protect tab from the main diagnostic diskette, then install it in diskette drive A.
Insert the option diagnostic diskette in drive B,

then press the Return key.

After the copy is completed, the computer display
the Main Diagnostic Menu on the screen. Type '”%
and press the Return key to check if the new
program title has been added to the individual test
menu.

INDIVIDUAL TEST MENU|
11 MEMORY (8088)
(2] MEMORY (B088/Z80)
(3] VIDEO CONTROLLER
4] DISK W‘&T&EM

(5] COMM/PRINTER/KEYBOARD PORT
6] PRINTER WE: QENCQ
7] VIDEQ ALIGNMENT PATTERN
(8] MEMORY (Z80)

(9] KEYBOARD
(10| MEMORY (SET-UP)
(11 1 COMM/PRINTER EXT. LOOPBACK
(12 | SYSTEM INTERACTION

“ME COMMUNICATIONS OPTH
115] GRAPHICS OPT

18] WINCHESTER OPTION

| PERFORM ONE OF THE FOLLOWING |

"TYPE MENU NUMBER THEN PRESS (Return) [ ]
"PRESS (Heip) FOR A MORE DESCRIPTIVE MENU
"PRESS (Set-Up/ (Ctr1/Set-Up) TO RESTART SYSTEM

Using the Diagnostic Diskette
A

Step 4. Remove the main diagnostic diskette from
drive A and place a write-protect tab on it. Place it in
its protective envelope.

/RITE-PROTECT

DISKETTE
SURFACE
TOUCH

PROTECTIVE

ENVELOPE

Installing System Unit in Floor Stand
Step 1.

Open the door on the floor stand. Position

the system unit, as shown, guiding the front edge near
the power switch onto the two ridges inside the stand.

Step 2.

Slide the system unit into the floor stand.

Installing System Unit in Floor Stand
Step 3. Make sure that the front of the system unit
is fully forward in the opening in the floor stand.

NOTE
There is a notch in the smaller ridges in
the floor stand to hold the system unit in
place.

Step 4. Connect the cables previously removed. Plug
in the power cord. Arrange the cables as shown in the
door of the floor stand and run the power cord out the
bottom. Close the door.

TURN THUMBSCREWS
TO TIGHTEN

CIRCUIT —4)) |
BREAKER

The information in this appendix will help you solve problems in your Rainbow computer. If the computer does not
respond correctly when you turn it on or if a message is reported during its selftest, the symptoms, possible causes,
and the appropriate corrective action are listed here. You should perform the corrective action in the order listed.

Incorrect Response
If you see no display on your screen, it could be caused by one of the following factors. Go to the page or table
referenced in parentheses to correct the problem.

Brightness or contrast controls set too low (page 74).

Power cord not plugged 1n.

No power at outlet.

e Monitor cable not plugged in (pages 11 and 73).
e

(ircuit breaker on back of system unit out (page 33).

(heck lights 2t back of system unit for possible cause (Table A-1).

Power cable is not firmly connected to the system module (page 31) or to the power supply (page 32).

Plugs between the fan assembly and the power supply are not firmly connected (page 72).

Troubleshooting

If fan is turning slowly but making no noise, the voltage switch at the back of the power

you require 115 V (page 58).

supply is set to 230 V while

Any of the following parts may be bad; swap with a known good part if available.

Power cord (page 14)

Monitor cable (page 8)
Monitor (page 8)
Language RC)M missing (pp. 26-29)

S‘;y&mm module (page 16)

Fan assembly (page 67).

Power supply (page 51).

Messages
If the system displays CONSULT USER’S GUIDE FOR ASSISTANCE or SEE OWNER’S
MANUAL on vour screen
followed by one of the following messages, take the corrective action indicated after
each message. The words in
brackets after the message are those that the model PC100-A Rainbow computer
displays on the screen.

Message 1 - Main Board [video]*
Switch the computer power off and then on again. If the problem persists after several

module (page 16).

retries, replace the system
“

Message 2 - Main Board [unsolicited interrupt]*
This message can occur during selftest if vour computer finds 2 problem with
your optional memory board. Remove
the memory board (page 22) and run the selftest again. If the message persists,
without the memory board in the

computer, replace the system module (page 16).

Message 3 - Drive A (or B) [index]*
Message &6 - Drive A (or B) [read]*
The diskette is write-protected, is inserted incorrectly in the drive, or is for a
different computer. Reinsert the
diskette; then, run the selftest program again. If the message persists, insert
another diskette into the drive and run
the selftest program again.

Troubleshooting
Make sure the drive cables are installed correctly. If the message still occurs, exchange the parts in the following
order.
*

Diskette drive (page 36)

Diskette drive cable (page 36)

RX50 controller module (page 21)

Message 4 - Drive A (or B) [motor]*

The diskette may be bent and slowing down the motor, or the motor may be running too fast. Check the diskette for
creases. Try another diskette in the drive and run the selftest again. If the message persists after trying several
diskettes, replace the diskette drive (page 36).
Message 5 - Drive A (or B) [seek]*

The diskette may be unformatted. Insert another diskette into the drive; then, run the selftest again. If the message

persists after trying several diskettes, make sure that the diskette drive cables are installed correctly (mg% 30 and
45). If the problem still persists, replace the diskette drive (page 36).

Message 7 - Drive A (or B) [restore]*

Message 8 - Drive A (or B) [step]*

Make sure that the diskette drive cables are installed correctly (pages 30 and 45). If the mm%g{% still persists,

exchange the parts in the following order.
®

Diskette drive (page 36)

Diskette drive cable (page 36)

RX50 controller module (page 21)

* The words in brackets after the message are those that the model PC100-A Rainbow computer displays on the screen. In such a case. the
message number 1s not displayed.

8¢

Troubleshooting

Message 9 - System Load Incomplete [system load]*
Message 11 - System Load Incomplete [boot load]*

The system displays this message when you start the operating system if any of the following occur.
®

The diskette is write-protected and is upside-down in the drive. Insert the diskette correctly in the

The diskette in the drive is not a Rainbow operating system diskette. Insert a Rainbow operating system

The operating system program on the diskette is unreadable. Use another copy of the diskette.

The diskette is blank and unformatted. Use a Rainbow operating system diskette.

drive.

diskette.

Message 10 - Main Board [video, vir]*
Switch the computer power off and then on again. If the problem persists after several retries, replace
the system
module (page 16).
|

Message 12 - Drive A (or B) [not ready]*
The computer displays this message when you run the selftest program if any of the following occur.
®

There 1s no diskette in drive A. To correct the problem, insert a diskette into drive A.

The diskette is upside-down in drive A. To correct the problem, reinsert the diskette

The drive door is not closed. Close the drive door.

Run the selftest program again after correcting the problem. If the message persists, make

drive cables are installed correctly (pages 30 and 45). If the problem still persists,

into the drive,

sure that the diskette

replace the diskette drive (page 36).

Troubleshooting
Message 13 - Keyboard
The computer displays this message when you switch its power on if the keyboard is not connected,
a key is
- depressed, or the keyboard is not working properly. To correct the problem, switch
the computer power off: then,

check the following.

Make sure that the keyboard cable is secured to the back of the monitor and to the bottom of the keyboard (pages

6 and 7).

‘

Make sure the video connector (VIDEO) is securely connected (page 11).

Check for any keys that may be stuck by running your fingers over the top of the

Switch the computer power on. Make sure you do not press any keys while the computer

power-up test.

keyboard keys.

1s going through its

[f the message persists after several retires, replace the keyboard (page 2).
Message 14 - Main Board [nvm data]*
The computer displays this message when you switch its power on if the previous
Set-Up selections are not read
correctly. The Set-Up selections that were previously saved are not in effect.
Recall the default settings by pressing <Shift/D> and save them by pressing
<Shift/S>. Switch the computer
power off and then on again. If the message persists after several retries,
replace the system module (page 16). If
the message is not displayed, review the Set-Up selections in your Owner’s
Manual for any that are specific to vour

computer.

* The words in brackets after the message are those that the model PC100-A
message number 1s not displayed.

Rainbow computer displays on the screen. In such a case, the

Troubleshooting

Message 16 - Interrupts Off

The computer dmmayfi this message when you switch its power on or while you run an application program. This
message is displayed in three ways.

If the message appears alone on the screen, switch the computer off and then on again. If the message persists

after several retries, replace the system module (page 16).

If the message appears above the Main System Menu, switch the computer power off and then on again. If the
message persists after several retries, replace the system module (page 16).

If the computer displays the message while it is running an application program, remove the application program
diskette and switch the computer power off and then on again. If the computer does not display the message when
you switch the computerpower on, rerun the application program. If the computer displays the message while
running the application program or, if you wrote the pmgmm check the program for a “bug” that has turned the

interrupts off.

Message 17 - Main Board [video ram]*
Message 18 -~ Main Board [Z80 crc]*
Message 19- Main Board [ram fiwMK‘x*
Message 20
- Main Board [unsclicitedinterrupt, Z80]*

Switch the computer power off and then on again. If the problem persists after several retries, replace the system
moduie (page 16).

Message 21 - Drive Not Ready

The computer displays this message when you attempt to start the operating system if any of the following occur.
o

The drive door is not closed. Close the drive door.

There is no diskette in the specified drive. To correct the problem, insert a diskette in the drive.

Troubleshooting
®

The diskette is upside-down in the drive. To correct the problem, insert the diskette aligning the orange arrow on
the diskette with the orange stripe on the diskette drive.

Drive C, D, or W is specified on a computer without the optional drives, or their cables are loose. To
correct the
problem, specify drive A or B if you do not have optional drives. Or, check the optional drive cables.

If the problem persists, run the selftest to see if Message 12 (Drive A not ready) occurs. If either message
persists,
check that the diskette drive cables are installed correctly (pages 30 and 45). If either message still
persists, replace
the diskette drive (page 36).
Message 22 - Remove Card or Diskette

The computer displays this message when you switch the power on if:
®

The protective card is in the drive. To correct the problem, remove the protective card before switching

power.

on the

The diskette in drive A is upside-down. To correct the problem, remove the diskette and install
it correctly,
aligning the orange arrow on the diskette with the orange stripe on the diskette drive.

Message 23 - Non-System Diskette
The computer displays this message when you attempt to start a diskette without first loading
the operating system
diskette. To correct the probiem, insert an operating system diskette into a drive and start the operating
system.

Message 24 - New Memory Size = nnnK

If you have just installed or removed additional memory, the computer displays this message only once when you

first switch the computer power on. Confirm that the number (nnnK) is the correct amount
message appears and you have not installed or removed memory, make sure that

* The words in brackets after the message are those that the model PC100-A Rainbow computer
message number is not displayed.

of memory. If the

the memory board is not loose.

displays on the screen. In such a case, the

Troubleshooting

Message 25 - Set-Up Defaults Stored

The computer displays this message when you switch the power on to indicate that it found and corrected a problem
in the part of the computer that saves your Set-Up selections. If you receive this message in a model PC100-B
computer, you are at the language selection menu. The Set-Up selections that you have previously saved are not in
effect; the default selections (those set at the factory) are in effect. The message is informative only.
Reset and save the Set-Up selections vou require. (Refer to vour Owner’s Manual.)
Message 26 - Main Board [ram arbitration]*

Switch the power off and then on again. If the message persists after several retries, replace the system module
(page 16).

Message 27 - Memory Board [ram option]*
While running the selftest, the computer found a problem in the optional memory board. If your optional memory
board came with a memory test procedure, use that procedure to try to isolate the problem to a specific chip.
Otherwise, exchange your memory board with another (page 22) and run the selftest again.
Message 28 - RX50 Controiler Board
Switch the power off and then on again. If the problem persists after several retries, remove the RX50 controller
board (page 21) and insert it again. (It may have loosened from the system module.) If the message persists, replace
the RX50 controller board.

Message 29 - Main Board [Z80 response]”
The computer displays this message when you switch the power on or when you start the operating system. Turn
the computer off, then on again. Make sure you are not using a VT 180 system diskette. Insert another Rainbow
operating system diskette into the drive and start again. If the message persists after several retries, make sure that
the ROMs are seated firmly (page 28). If the message persists, replace the system module (page 16).

Troubleshooting
Message 30 - Main Board [rom crc, rom 07*
Message 31 - Main Board [rom crc, rom 1]*

[ Main Board, rom crc, rom 2J*

Switch the computer power off and then on again. If the message persists after several retries, make
sure that the
ROMs are seated firmly (page 28). If the message still persists, replace the system module (page 16).
Message 33 - Main Board [contention]*
Switch the computer power off and then on again. If the problem persists after several retries,
replace the system
module (page 16).
|
Message 40 - Main Board [printer port]*

The computer displays this message when you switch its power on if the printer connector on the back
.

system unit is not working correctly. Turn the computer power off and then on again.

several retries, replace the system module (page 16).

of the

If the message persists after

Message 50 - Main Board [keyboard port]*
Switch the computer power off and then on again. If the problem persists after several retries, replace
the system
module (page 16).
Message 60 - Main Board [comm. port]*

o=,

The computer displays this message when you switch its power on if the communications
connector on the back of
the system unit is not working correctly. Switch the computer power off and then on a gain. If the problem
persists
after several retries, replace the system module (page 16).

* The words in brackets after the message are those that the model PC100-A Rainbow
message number is not displayed.

computer displays on the screen. In such a case, the

Troubleshooting

Table A-1 lists each message and its corresponding light display. You will see the light display on the back of the
system unit. The words in parentheses are those that the model PC100-A Rainbow computer displays on the screen.
Table A-1. Internal Diagnostic Test Messages

Message
Number

Message

Light Display
12345 67

Main Board (video)

Main Board (unsolicited interrupt) *

O &

Drive A or B (index)

0O O

O O o

Drive A or B (motor)

Drive A or B (seek)

Drive A or B (read) |

®# 0O 0 0 0O o @

Drive A or B (restore)

Drive A or B (step)

System Load Incompletet (system load)

0000

Main Board (video, vir)

System Load Incompletet (boot load)

0 00 0 0 O

Troubleshooting
Table A-1. Internal Diagnostic Test Messages (Cont)

Light Display
1

Drive A or B (not ready)

Keyboard

Main Board (nvm data)

8.8 0

o
~J

Main Board (video ram)

Main Board (Z80 crc)

peoet

Interrupts Off*

Message

Message
Number

|
|

Main Board (ram 0-64K)

Main Board (unsolicited interrupt, Z80) *

Drive Not Readyt

Remove Card or Diskette

Non-System Diskettet

* These errors can occur at any time because their circuits are monitored constantly.
T These messages may occur during power-up if auto-boot is selected.

Troubleshooting
Table A-1. Internal Diagnostic Test Messages (Cont)
Message

Number

Message

New Memory Size = nnnK

Set-Up Defaults Stored

Main Board (ram arbitration)

Memory Board (ram option)

RX50 Controller Board

Main Board* (Z80 response)

Main Board (rom crc, rom 0)

»31

Main Board (rom crc, rom 1)

Main Board, rom crc, rom 2

Main Board (contention)

Main Board (printer port)

Main Board (keyboard port)

Main Board (comm. port)

Light Display
1 2345

¢ = on, 0 = off, - = on or off;
* These errors can occur at any time because their circuits are monitored constantly.
+ These messages may occur during power-up if auto-boot is selected.

Troubleshooting
Diagnostic Diskette Tests
The Rainbow diagnostic diskette in your system kit can help you isolate problems. The following paragraphs summarize the tests on the diagnostic diskette.
Test Drives A and B

The Test Drives A and B selection on the Main Diagnostic Menu checks diskette drives A and B only. Use selection
4, Disk System from the Individual Test menu, to check drives C and D.
Test Computer

The Test Computer selection on the Main Diagnostic Menu checks most basic Rainbow computer functions including
extended memory. It does not check other options or the line drivers on each port. It is a collection of individual
tests that run one after the other. The Test Computer selection takes about 30 minutes to run.
Display Individual Test Menu

The Display Individual Test menu selection on the Main Diagnostic Menu displays a menu of the individual tests that

are included in the Test Computer selection. In addition, there are tests that require loopback connectors and user
interaction, as well as tests that may be added for optional equipment.

The following paragraphs summarize the individual test selections. You can also press the (1:i; key for additional
information on each test.

&?&

MEMORY (8088) - The Memory (8088) test checks the memory including the optional memory board, if present.

If you replace the memory board or add components to the memory board, you use this test to verify that the new
memory board works correctly.

MEMORY (8088/280) — This test checks the memory that is shared between the two internal processors.

VIDEO CONTROLLER - This test checks the timing of the refresh signal, checks internal loopback signals, and
displays each of the special video capabilities on the screen for 20 seconds. You must watch the screen to check

Troubleshooting
these capabilities. To begin the displays, press the Resume key. To hold a display, press the Interrupt key. To
continue to the next display, press the Resume key.
4.

DISK SYSTEM - This test checks diskette drives A and B, C and D, or all of them. This test is the same test as the
Test Drives A and B selection; however, it allows vou to test drives C and D also.

COMM/PRINTER/KEYBOARD PORT - This test checks all internal data transmission paths, except for the line
driver circuits, on the system module. A loopback plug is not required for this test.

PRINTER CONFIDENCE - This test checks the printer. Press the Escape key. Type your test message on the
keyboard, then press the Escape key again. To stop the test, press the Escape key again or press the Returnkey.

VIDEO ALIGNMENT PATTERN - This test fills the entire screen with E’s to help you check intensity, sizing,
and spacing of characters. When the graphics option is present, do not use this test; instead, use the monitor
alignment pattern on the GSX-86 diskette and a video alignment template (part number 29-24371-00).

MEMORY (Z80) - This test checks the 2K byte Z80A processor memory on the system module.

KEYBOARD - This test draws a keyboard on the screen with all of the keys on it. When you press a key, the
screen will indicate whether or not the key works. Press the Help key for information on exceptions. To exit the
test, type the letters OUT

10.

MEMORY (SET-UP) - This test checks the nonvolatile memory that is used for saving Set-Up selections after

power is turned off.

11.

COMM/PRINTER EXTERNAL LOOPBACK - This test checks the communications and printer circuits including
the line drivers on the system module that could not be checked with selection 5. You must install a loopback plug
{(part number 12-15336-01 for model PC100-A or 12-15336-04 for model PC100-B) on the COMM connector and
a loopback plug (part number 29-24631-00) on the PRINTER connector before you can run this test.

12.

SYSTEM INTERACTION - This test exercises all system tasks at once to check for timing problems. If an error
1s detected, the test reduces the number of tasks competing for system resources to detect the failure.

13.

Not used.

Troubleshooting
NOTE

Tests 14, 15, and 16 are diagnostic tests that are shipped with each option. Using
selection 4 from the Main Diagnostic Menu, you can add these tests to your Rainbow
diagnostic diskette (version 2.0 or higher). You cannot add these tests to version 1.0 of
the diagnostic diskette (part numbers BL-T309A-BV and BL-T309B-BV). Therefore, if
you have version 1.0, run these tests from the diagnostic diskette that comes with the option.

14.

COMMUNICATIONS OPTION - This selection contains the internal and external diagnostic tests that come with
the extended communications option. A loopback plug (part number 12-15336-04) is required for the external

et
s

o
»m

diagnostic test.

GRAPHICS OPTION - This selection contains the color/graphics diagnostic that comes with the color/graphics option.
WINCHESTER OPTION - This selection contains the hard disk diagnostic (also on the Rainbow Hard Disk Utility
Program diskette) that comes with the Winchester (hard disk) option.

Install New Diagnostic Test
This selection is not a test but a feature that allows you to add the tests for each option to your diagnostic diskette.
Each new option has a diskette with the diagnostic tests for that option. You use the Install New Diagnostic selection
on the Main Diagnostic Menu to copy the new test to the Rainbow diagnostic diskette. See page 80 for instructions.

NOTE
You cannot use this feature if you have an early Rainbow diagnostic diskette (part
numbers BL-T309A-BV or BL-T309B-BV).
Diagnostic Diskette Test Messages
Table A-2 lists the diagnostic diskette test messages, the possible source of the problem, and the corrective action.

Troubleshooting
Table A-2. Diagnostic Test Messages

Possible Source/
Corrective Action

Messages

Diagnostic Executive Messages

SYSTEM ERROR: COMPUTER CANNOT FIND SUFFICIENT
#

SYSTEM ERROR: DISK READ OR WRITE FAILED
RESTART SYSTEM

Diagnostic diskette or
system module. Try another
diskette. Replace system module.

Diagnostic diskette, diskette
drive, or system module. Try
another diskette. Replace
system module.

SYSTEM ERROR: COMPUTER CANNOT READ TEST FILE
FROM THE DISK

SYSTEM ERROR: COMPUTER CANNOT READ MESSAGE

Diagnostic diskette. Try another
diskette.

Diagnostic diskette. Try another

diskette.

Try another diagnostic diskette.
Replace system module.

Memory (Set-Up) Test Messages

FAILURE: MAIN BOARD: SET-UP MEMORY DOES NOT
STORE DATA CORRECTLY

Make sure memory board is installed
correctly.

Troubleshooting

Table A-2. Diagnostic Test Messages (Cont)

Possible Source/

Corrective Action

Messages
s

INCORRECTLY

System module. Replace system
module.
System module. Replace system
module.

STORES DATA INCORRECTLY

Optional memory board component.
If your memory board came with a
Memory Test Procedure, refer to that
procedure; otherwise, replace the
memory board.

Memory (8088) Test Messages

SET-UP SHOWS IT PRESENT

Memory size is incorrect.
Make sure memory board is
installed firmly in its connectors.
Check memory size.

Memory size is incorrect.
Make sure memory board is
installed firmly in its connectors.

Check memory size.

SHOWS IT IS NOT PRESENT

System module. Replace system
module.

OPTIONAL MEMORY

Troubleshooting

Table A-2. Diagnostic Test Messages (Cont)

Messages

Possible Source/
Corrective Action

Memory (8088) Test Messages

Symem module. Replace system
module.

SYSTEM ERROR: SYSTEM CLOCK DOES NOT WORK

System module. Replace system module.

ERROR: SET-UP FOR MEMORY SIZE IS NOT CORRECT

Memory size is incorrect; check Set-Up.
Make sure memory board is
installed firmly in its connectors.

FAILURE: MEMORY OPTION BOARD: PARITY DETECTION
DOES NOT WORK

FAILURE: OPTION MEMORY BOARD: OPTION MEMORY

INCORRECT

Switch 4 on the memory board should be
on; check switch. If problem persists,
replace memory board.
Replace memory board.

Memory board component. If your
memory board came with a Memory

Test Procedure, refer to that procedure;
otherwise, replace the memory board.

TEST CANNOT CONTINUE - PLEASE RESTART SYSTEM

Diagnostic diskette.

Troubleshooting

Table A-2. Diagnostic Test Messages (Cont)

Messages

Possible Source/
Corrective Action

Memory (8088/Z80) Test Messages

INCORRECTLY

System module. Replace system
module.
System module. Replace system
module.

SYSTEM ERROR: TEST PROGRAM DOES NOT
FUNCTION CORRECTLY

Diagnostic diskette.

Diskette System Error Messages

FAILURE: MMN&“ BOARD: ILLEGAL INTERRUPT TO Z80
280 DIAGNOSTIC FILE NOT FOUND

Repeat test; if error persists,
replace system module.

Cannot find file on diskette.
Repeat test; if message persists,
replace system module.

SYSTEM ERROR: INSUFFICIENT MEMORY FOR
DIAGNOSTICS
|

Repeat test: if message persists,
replace system module.

Troubleshooting

Table A-2. Diagnostic Test Messages (Cont)

Possible Source/
Corrective Action

Messages

Diskette System Error Mémmg%
FAILURE: RX50 CONTROLLER BOARD:
FORCED LOST DATA (read)

FORCED LOST DATA (write)
FORCED RECORD NOT FOUND (read)

FORCED RECORD NOT FOUND (write)
FORCED SEEK

HEAD LOAD TIMING
INTERNAL REGISTER

LOOP BACK READ

RESTORE
SEEK FAILURE (with no verify)
WRITE SECTOR

Bad connection between
system module and RX50
controller board; remove and
reseat controller board.
Run test again; if message
persists, replace controller board.

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)
Messages

Possible Source/
Corrective Action

Diskette System Error Messages

FAILURE: RX50 CONTROLLER BOARD:
WRITE SECTOR

Could be a bad diskette; try
another diskette and run test
again. If message persists, remove
and reseat RX50 controller
board; if error still persists,
replace RX50 controller board.

FAILURE: DRIVE X (where X = A, B, C, or D) -

Write-protect tab is on diskette.

DRIVE NOT READY

INDEX PULSE

Diskette is not inserted properly or
is upside-down; diskette drive door
1S open.

Diskette may be upside-down or

1s not spinning.

READ SECTOR

May occur after a write sector
failure. Could be a bad diskette:
try another diskette.

SEEK (with verify)

Could be a bad diskette:
try another diskette.

WRITE SECTOR

Could be a bad diskette; rerun

test using another diskette.

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)

Possible Source/
Corrective Action

Messages
Diskette System Error Messages

NOTE
The following diskette drive error messages may occur from poor connection between
the RX50 controller board and the diskette drive. Reseat cables and rerun tests. If any
of these errors persist, remove and replace the diskette drive.
FAILURE: DRIVE X (where X = A, B, C, or D) MOTOR SPEED

MULTI-TRACK TIMING

Diskette drive motor is turning
too fast or too slow; diskette
may be warped, try another;
replace diskette drive.

Head did not move away from fipindl&

correctly; replace diskette drive. .

No track 0 signal coming from
drive; insert and remove protective
card; try again; replace diskette drive.
STEP

Head did not move in correct amount
of time; insert and remove protective
card; try again; replace diskette drive.
Head did not move toward spindle
correctly; replace diskette drive.

STEP-OUT

Head did not move away from spindle
correctly; replace diskette drive.

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)

Possible Source/

Messages

Corrective Action

Memory (Z80) Test Error Messages
Diagnostic diskette.

Diagnostic diskette or

FUNCTION CORRECTLY

system module.

FAILURE: MAIN BOARD: Z80 FAILED TO START
MEMORY TEST

System module. Replace system
module.

FAILURE: MAIN BOARD: Z80 PRIVATE MEMORY DOES
NOT STORE DATA CORRECTLY

System module. Replace system
module,

MEMORY TEST

System module. Replace system

module.

Start diagnostic diskette again;
- TEST CANNOT CONTINUE, PLEASE RESTART
SYSTEM -

TEST CORRECTLY

rerun test; if problem persists,

replace system module.

Diagnostic diskette or
system module.

Tmublesheming
Table A-2. Diagnostic Test Messages (Cont)
Possible Source/
Corrective Action

Messages

System Interaction Error Messages

FAILURE: MAIN BOARD: COMM CHANNEL (A) ERROR

Retry test. If error persists,
replace system module,

DISKETTE WRITE ERROR
[/0 ERROR

PRINTER KEYBOARD PORT ERROR

FAILURE: DRIVE B: WRITE ERROR

Try another diskette.

280 DIAGNOSTIC FILE NOT FOUND

Try another diagnostic diskette.

FAILURE: DISKETTE WRITE-PROTECTED

Remove write-protect tab.

Video Controller Test Error Messages
FAILURE: MAIN BOARD: VIDEO ERROR

The vertical retrace rate is either
too slow or too fast. Replace
the system module.

FAILURE: MAIN BOARD: VIDEO ERROR
A LOOPBACK CHECK IS INCORRECT

The information sent to the video
output is being altered. Replace
the system moduie.

Troubleshooting

Table A-2. Diagnostic Test Messages (Cont)

Messages

Corrective Action

Keyboard Test Error Message
Replace system module.
Winchester (Hard Disk) Diagnostic Error Messages

The hard disk option is not connected.

The hard disk option is missing or is not seated
correctly. Press the Help key for more information, then check inside the system unit.
The hard disk controller board or the cables
may be loose. Check connections.

(followed by:)
DRIVE NOT SELECTED

Check for loose cables that connect

from the drive to the controller board.

DRIVE NOT READY
FAILURE: HARD DISK CONTROLLER:

The hard disk controller board is not
seated firmly on the system module.

FAILURE: HARD DISK CONTROLLER:

Small connector on hard mak drive
cable or 4-wire cable is not
connected to disk drive.

IMPROPER STATUS, COMMAND COMPLETION

T rmumeshommg
Table A-2. Diagnostic Test Messages (Cont)

Messages

Possible Source/

Corrective Action

Winchester (Hard Disk) Diagnostic Error Message

(followed by:)
A SEEK COMMAND DID NOT RESULT IN

CONTROLLER STEPPING TOO FAST

NO INTERRUPT ON COMMAND COMPLETION
R/W ERROR DETECTED IN REGISTER

R/W ERROR IN SECTOR BUFFER
SECTOR BUFFER COUNTER FAILED TO CLEAR

STATUS NOT PROPERLY SET AFTER

STEP FLAG NOT CLEARED/SET

Reseat the hard disk controller
board and run the hard disk
diagnostic again. If error persists,
replace the hard disk controller

board.

Troubleshcoting
Table A-2. Diagnostic Test Messages (Cont)

Possible Source/
Corrective Action

Messages

Winchester (Hard Disk) Diagnostic Error Message
(followed by:)

Reseat the hard disk controller
board and run the hard disk
diagnostic again. If error persists,
replace the hard disk controller
board.

UNABLE TO RESET INDEX LATCH

WRITE FAULT

FAILURE: DRIVE: DRIVE NOT READY

Cable to hard disk drive or controller board is
loose or not fully seated. Check cable. The 4-

wire power cable to hard disk drive is not connected. Check cable.

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)
Possible Source/

Messages

Corrective Action

Winchester (Hard Disk) magnmti& Error meg’%
(followed by:)
*
DRIVE ROTATIONAL SPEED TOO SLOW/FAST

HARD READ FAILURE, BAD SURFACE
SEEK COMPLETE NOT DETECTED AFTER
WRITE FAULT

Replace hard disk drive with a known
good drive and rerun the test. If
error persists, replace the drive
cable.
‘
u

TRACK 00 NOT DETECTED AFTER
RESTORE OR SEEK TO TRACK 0

FAILURE: CONTROLLER OR DRIVE?:

(followed by:)
CRC ERROR

D.A.M. (data address mark) NOT FOUND
HARD SCAN FAILURE

The hard disk drive cable is damaged.
Install a new cable.

Check the hard disk controller board
and make sure it 1s firmly seated in
its connectors. If error persists,
replace the following components
in the following sequence:
e
o
@

Hard disk drive cable
Hard disk drive
Hard disk controller board

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)
Messages

Possible Source/
Corrective Acfimn

Winchester (Hard Disk) Diagnostic Error Message

(followed by:)

SLOW/FAST STEPPING RATE
UNABLE TO SET INDEX LATCH

FAILURE: MEDIA: BAD SECTOR DETECTED
ON CYLINDER 0

Press the Help key and follow the
instructions on the screen.
Re-initialize the hard disk using the
hard disk utility program. Rerun the
diagnostic. If failure persists,
replace the disk drive.

FAILURE: CONTROLLER OR DRIVE?:

Press the Help key and follow the
instructions on the screen. Replace
the parts in the following order:

(followed by:)
DIAGNOSTIC CYLINDER HAS INCORRECT DATA

HARD READ FAILURE
-

®
o
e

Hard disk drive cable
Hard disk drive
Hard disk controller board

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)
Possible Source/

Corrective Action

Massages

Extended Communications Option — Internal Diagnostic Error Messages
FAILURE: COMM OPTION BOARD
(followed bv:)
COMM OPTION NOT INSTALLED
|

communications option board

MPSC DATA BUS WRITING ZEROS

DMA TERMINAL COUNT CHANNEL 0
|
|
DMA TERMINAL COUNT CHANNEL 2

Verify that the extended
(COMM option) has been installed.

Reseat COMM option by
removing and installing it.

Rerun Ext. Comm test.

[f error persists, replace
COMM option module.

Make sure nothing is attached
to COMM connectors. Remove
anything attached and rerun test.

[f error persists, reseat
COMM option by removing and
reinstalling it.

Rerun test. If error

Ext. Comm A BUFFER COMPARE ERROR

Ext. Comm B BUFFER COMPARE ERROR

SYNC DETECT Ext. Comm A

SYNC DETECT Ext. Comm B

persists, replace COMM option.

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)

Possible Source/
Corrective Action

Messages

Extended Communications Option— External Diagnostic Error Messages

COMMAND

STATUS REGISTER READ

option by removing and

COMMAND STATUS REGISTER RESET

reinstalling it.

DMA DIAGNOSTIC INTERRUPT

DMA REGISTER DATA TEST

*
e

Rerun test.
If error persists, replace COMM

option.

MPSC DATA BUS
Extended Communications Option

There is a hardware fault in
the COMM option. Reseat

External Diagnostic Error Messages

FAILURE: COMM OPTION BOARD:
(followed by:)
CARRIER SENSE

Check that loopback plug is
attached only to EXT COMM
B connector.

CLOCK SUBSTITUTION

If not, attach plug and rerun test.

COMM SIGNAL “DTR” TO “DSR”

COMM SIGNAL “RTS” TO “CTS” & “BRLSD/CD”
COMM SIGNAL “SPSL” TO “RI”

If error persists, reseat COMM option

and rerun test.

If error persists, replace COMM option.

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)
Possible Source/
Corrective Action

Messages

Extended Communications Option — External Diagnostic Error Messages
FAILURE: COMM OPTION BOARD:
{(followed by:)

B connector.

COMM SIGNAL “SRTS” TO “SI”
»

COUNT DONE

DMA TERMINAL COUNT CHANNEL 0
DMA TERMINAL COUNT CHANNEL 2

Ext. Comm A BUFFER COMPARE ERROR
Ext. Comm B BUFFER COMPARE ERROR

MISSING IDLE DETECT

SYNC DETECT Ext. Comm A
SYNC DETECT Ext. Comm B
UNEXPECTED IDLE DETECT

(heck that loopback plug is
attached only to EXT COMM

If not, attach plug and rerun test.

[f error persists, reseat COMM option
and rerun test.

[f error persists, replace COMM option.

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)
Messages

Possible Source/
- Corrective Action
S

Color/Graphics Option Error Messages

(followed by:)
GRAPHICS BOARD NOT PRESENT

Option is not detected in the system.
e

Venfy that color/graphics board
has been installed.

Reseat color/graphics board by
removing and installing it.

Rerun test. If error
persists, replace color/graphics
board and rerun test.

[f error persists, the problem may
be in the system module.

CHARACTER BUFFER

Reseat color/graphics
board by removing it,
remnstalling it, rerunning test.

CONTROLLER INVALID SYNCHRONIZATION

[f error persists, replace
color/graphics board.

CONTROLLER OR ADDRESSING

Rerun test. If error persists,
the problem may be in the

CLOCK TIMING

CONTROLLER OR DATA BUS

system module.

Troubleshooting
Table A-2. Diagnostic Test Messages (Cont)

Possible Source/
Corrective Action

Messages
Color/Graphics Option Error Messages
FAILURE: GRAPHICS OPTION:
(followed by:)
|

CONTROLLER RETURNS INVALID STATUS

board by removing it,

DATA BUS OR MEMORY
ERRATIC INTERRUPT

Reseat color/graphics
reinstalling it, rerunning test.

FOREGROUND/BACKGROUND

GRAPHICS MASK
MEMORY DATA

PATTERN MULTIPLIER

SCROLL MAP OR DATA BUS

If error persists, replace

color/graphics board.

Rerun test. If error persists,

the problem may be in the
system module.

Table B-1 lists the recommended spare parts for the Rainbow computer. How to order these parts and a description
of Digital services follow the table.
Table B-1. Rainbow Computer Parts List

Part

System module, PC100-A*
System module, PC100-B
RX50 controller module
Hard disk controller board
64K byte memory board (PC100-A)*t
192K byte memory board (PC100-A)t
128K byte memory board (PC100-B)
256K byte memory board (PC100-B)
64K byte memory component kit (9 chips)
256K byte memory component kit (9 chips)
Color/graphics option board
*Part is for the Rainbow PC100-A model only.
#This memory board can be used on either the Rainbow PC100-A OR PC100-B models.

Digitali
Part Number

70-19974-00
70-19974-02
54-15482
54-16019

54-15688

Rainbow Computer Parts
Table B-1. Rainbow Computer Parts List (Cont)

Part

Extended communications option board

ROM 1 CLUSTER 1
(German, French, English) PC100-B
ROM 1 CLUSTER 2
(Dutch, French, English) PC100-B
ROM 1 CLUSTER 3
(Finnish, Swedish, English) PC100-B

ROM 1 CLUSTER 4
(Danish, Norwegian, English) PC100-B
ROM 1 CLUSTER 5
(Spanish, Italian, English) PC100-B
Canadian (French) language ROM*
British (UK) language ROM*
German/Austrian language ROM*
[talian language ROM*
Swiss (French) language ROM*
Swiss (German) language ROM*
Belgian/French language ROM*
Spanish language ROM*
Dutch language ROM*
U.S.A. language ROM*
Belgian/Flemish language ROM*
Danish language ROM*
Finnish language ROM*

Digital
Part Number

54-15703
23-022E5-00

23-020E5-00

23-015E5-00

23-016E5-00

~ 23-017E5-00
23-018E5-00

BG-R876A-BV
BG-R878A-BV
BG-R874A-BV
BG-R376A-BV
BG-R877A-BV
BG-R377A-BV
BG-R881A-BV
70-20274-15
BG-R378A-BV
BG-R875A-BV
BG-R872A-BV

Rainbow Computer Parts
Table B-1. Rainbow Computer Parts List (Cont)

Part

Norwegian language ROM*
Swedish language ROM*
Power supply - PC100-A*
Power supply - PC100-BT
COMM connector loopback plug* - PC100-A
EXT COMM B loopback plug/COMM connector - PC100-B
PRINTER connector loopback plug
RX50 diskettes (pack of ten)
RX50 dual-diskette drive
Keyboard, American (English)

Keyboard, British (English)

Keyboard, Belgian/French
Keyboard, Belgian/Flemish
Keyboard, Canadian (French)
Keyboard, Danish
Keyboard, Finnish.
Keyboard, German/Austrian
Keyboard, Dutch
Keyboard, Italian
Keyboard, Norwegian
Keyboard, Spanish
Keyboard, Swedish
Keyboard, Swiss (French)
*Part is for the Rainbow PC100-A model only.
tThis can be used on either the Rainbow PC100-A OR PC100-B models.

Digital
Part Number

BG-R879A-BV
BG-R880A-BV
H7842-A
H7842-D

29-24631-00

LK201-AE

LK201-AF
LK201-AG

LK201-AK

Rainbow Computer Parts
Table B-1. Rainbow Computer Parts List (Cont)

Part
Keyboard, Swiss (German)
Keycap removal tool
Video monitor assembly (white phosphor)
Color monitor
Cable, color monitor
Cable, hard disk drive
Cable, monitor, 1.8 m (6 ft)
Cable, power supply to system module, 10.1 cm (4 in)
Cable, RX50 shielded, 20.3 cm (8 in)
Cable, RX50 shielded, 36.8 cm (14.5 in)
Cable, COMM printer, 3 m (10 ft)
Cable, modem
Fan bracket assembly, PC100-A*
Fan bracket assembly, PC100-B
Line cord, Austraiia
Line cord, Beigium
Line cord, Canada (French)
Line cord, Denmark
Line cord, Finland
Line cord, France
Line cord, Germany
Line cord, Holland
Line cord, Italy
Line cord, Japan

Digital
Part Number
LK201-AL
74-27314-01
VR201-A
VR241-A
BCC17
17-00427-01
17-00283-00
17-00318-02
17-00317-03
17-00317-04
BCC04-10
BCC15
70-19572-00
70-20816-01
- 17-00198-00
17-00199-00
17-00083-09
17-00310-01
17-00199-00
17-00199-00
17-00199-00
17-00199-00
17-00199-00
17-00083-09

Rainbow Computer Parts
Table B-1. Rainbow Computer Parts List (Cont)

Part

Line cord, Norway
Line cord, Spain
Line cord, Sweden
Line cord, Switzerland (French)
Line cord, Switzerland (German)
Line cord, United Kingdom
Line cord, U.S.A.
Cable, keyboard
Connector clip, RX50 controller
Connector clip, RD51 controller
Standoffs, module
Spacer, hard disk controller
Filler panel, PC100
Rainbow 100 medallion*
Rainbow script medallion
Video alignment template
Packaging container for RD51

Digital
Part Number

17-00199-00
17-00199-00
17-00199-00
17-00210-00
17-00210-00
17-00209-00
-17-00083-09
17-00294-00
74-28702-01
74-28702-02
12-19857-01
74-29164-01
74-27174-01
74-27256-03
74-27256-06
29-24371-00
99-90045-01

*Part is for the Rainbow PC100-A model only.

125

Rainbow Computer Parts

How to Get Replacement Parts
Digital Equipment Corporation has a central service point in your area to help you get your system running with a
minimum of trouble.

Before you phone:

Determine the failing part.

Make a note of all error indications you were able to observe.
Remove the failing part using the instructions in this book.
(T

Write down the serial number of your Rainbow computer. The serial number is on the back of the

system unit.

Call the Digital Customer Help Line number listed below to determine the location of the Digital ServiCenter

nearest you.

Austria
Australia
Sydney
All other areas
Belgium
Canada
Denmark
Finland
France
Holland
[taly

Japan

Norway
Portugal

Spain
Sweden
Switzerland
United Kingdom

West Germany

(222)-67 76 41 extension 444

(02) 412-5555
(008) 226377
(02) 24 26 790
(800) 267-5251
(04) 30 10 05
(90) 42 33 32
(1) 687 31 52
(1820) 31 100
(02) 617 53 81 or 617 53 82

(03) 989-7161

2-256422
(1) 725497

(1) 73 34 307
(08) 98 88 35
(01) 810 51 21

(0256) 59 200
(800) DEC-8000
(089) 95 91 66 44

Rainbow Computer Parts
Digital Services
Digital Equipment Corporation provides a wide range of maintenance and customer services for your Rainbow

computer.

On-Site Service
Trained service specialists perform fast, low-cost maintenance at your site. On-site service is provided under a
service agreement or per call.

Carry-in Service

There are 160 Digital ServiCenters worldwide, offering fast, dependable service. Carry-in service is provided under

a service agreement or per call. Call the appropriate service number from the list above for the location of the

ServiCenter nearest you.

DECmailer

If you have troubleshooting expertise, but need assistance for component repair, DECmailer provides a low-cost
solution. It provides a repair service for modules and subassemblies with five-day turnaround at a Customer
Return Center.

Spare Parts
Digital Equipment Corporation’s Customer Spares organization provides support in the following

Spare inventory

Maintenance test equipment

Documentation

[Emergency spare parts

For more information on any of these services, call the appropriate service number listed above.

areas.

Adding new diagnostic to diskette, 80, 101

Blank screen, 87
Brightness too low, 74

Cables, 124, 125
Carry-in service, 127
Check computer test, 77, 78, 99
Check diskette drives, 77, 99
Check voltage setting, 58
Circuit breaker, 83, 87
Color/graphics board replacement, 25
Color/graphics option diagnostic error messages, 119
Comm loopback plug, 104, 117, 123
Comm)/printer external loopback test, 100
Comm/printer/keyboard port test, 100

Communications option

messages, 116-118

removal and replacement, 23
test, 80, 101

Connecting the computer, 73
D

DECmailer, 127
Diagnostic diskette
test messages, 102-120

tests, 77, 99

version number, 101
Diagonal lines on screen, 74

Disk system test, 100
Diskette drive
A/B installation, 42
C/D installation, 44
~

labels, 84
removal, 34

Diskette system error messages, 105-108

Index

Display individual test menu, 77, 79, 99

Error messages (see also, Messages)
color/graphics option diagnostic, 119
diagnostic diskette, 99
diskette system, 105-108

extended COMM option diagnostic, 116-118

hard disk diagnostic, 111-115
Winchester diagnostic, 111-115
Extended communications option
error messages, 116-118
replacement, 23

Fan and switch assembly
removal, 67
replacement, 71
Fan turning too slow, 88
Filler panel, 49
Floor stand
installation, M

Hard disk
controller board replacement, 24
diagnostic error messages, 111-115
drive replacement, 48
Help line number, 126

Individual test menu, 79
Install new dmgmfim test, 80, 101
Installation
diskette drive A/B, 42
diskette drive C/D, 44
fan and switch assembly, 71
hard disk drive, 48
new diagnostic on diskette, 80, 101
power supply, 58
system unit in floor stand, 82
Winchester, 48

Kethmd
installation, 5

options, 123

removal of svstem unit from, 14

removal, 2
test, 79, 100, 111

Graphics option
error messages, 119, 120
test, 80, 101

Handling computer parts, 1

130

Language ROM
location on PC100-A, 26
location on PC100-B, 27
part numbers, 122, 123
replacement on PC100-A, 28
replacement on PC100-B, 29

Index
Light display, 89, 96-98
Loopback plugs, 100, 101, 123

Main board removal, 16
Main board mplzammfi%m 30
Main Diagnostic Menu, 77
Main System Menu, 76
Medallion, 84

Memory (80%) test, 79, 99, 103

Memory (8088/Z80) test, 79, 99, 105
Memory (Z80) test, 79, 100, 109
Memory board replacement, 22
Messages
1 - Main Board, 88
2 - Main Board, 88
3 - Drive A (or B), 88
4 - Drive A (or B), 89
5 - Drive A (or B), 89
6 - Drive A (or B), 88
7 - Drive A (or B), 89
8 - Drive A (or B), 89
9 - System Load Incomplete, 90
10 - Main Board, 90
11 - System Load Incomplete, 90
12 - Drive A (or B), 90
13 - Keyboard, 91
14 - Main Board, 91
16 - Interrupts Off, 92
17 - Main Board, 92
18 - Main Board, 92
19 - Main Board, 92
20 - Main Board, 92
21 - Drive Not Ready, 92
22 - Remove Card or Diskette, 93

23 - Non-System Diskette, 93
24 - New Memory Size, 75, 93
25 - Set-Up Defaults Stored, 94
26 - Main Board, 94
27 - Memory Board, 94
28 - RX50 Controller Board, 94
29 - Main Board, 94
30 - Main Board, 95
31 - Main Board, 95
33 - Main Board, 95
40 - Main Board, 95
50 - Main Board, 95
60 - Main Board, 95
Boot Load, 90
Drive A, index, 88
Drive A, motor, 89
Drive A, not rmdy, 90
Drive A, read, 88
Drive A, restore, 89
Drive A, seek, 89
Drive A, step, 89
Drive not ready, 92
[nterrupts Off, 92
Keyboard, 91

Main Bmm comm. port, 95

Main Board, contention, 95
Main Board, keyboardport, 95
Main Board, nvm data, 91

Main Bmw& printer port, 95
Main Board, ram 0 - 64K, 93

Main Board, ram arbitration, 94
Main Board, rom crc, rom 0, 95
Main Board, rom crc, rom 1, 95
Main Board, rom crc, rom 2, 95
Main Board, unsolicited mtmmpt 92
Main Board, unsolicited interrupt, Z80, 92

Index

Main Board, video, 88
Main Board, video ram, 92
Main Board, video, vir, 90
Main Board, Z80 crc, 92
~Main Board, Z80 response, 94
New Memory Size, 75, 93
Non-System Diskette, 93
Ram option, 94
Remove card or diskette, 93
RX50 Controller Board, 94
Set-Up Defaults Stored, 94
System Load, 90
Messages on diagnostic diskette, 102-120
Monitor installation, 10
Monitor removal, 8

On-site service, 127
Ordering replacement parts, 126

Part numbers, 121-125
Power supply
installation, 58
removal, 51
voltage setting, 58
Printer confidence test, 79, 100
Printer connector loopback piug, 100, 123
Protective card (for diskette drive), 13
R

Rainbow hard disk utility program, 101

132

Removal
color/graphics board, 25

cover, 17
diagonal lines from screen, 74
diskette drives, 34
extended communications board, 23
fan and switch assembly, 67
hard disk controller board, 24
hard disk drive cable, 39, 40
hard disk drive, 34, 38
language ROM, 26
memory board, 22
power supply, 51
RX50 controller board, 21
system unit from floor stand, 12
Winchester, 34, 38
RX50 controller board replacement, 21

S test, 75, 76
Screen blank, 87
Screen with diagonal lines, 74
Spare parts, 121-127
System interaction test, 79, 100
System module removal, 16
System module replacement, 30

Test computer, 76-79, 99
Test drives A and B, 77, 78, 99
Troubleshooting, 87

Index

Using the diagnostic diskette, 77-80

Video alignment pattern, 79, 100
Video controller test, 79, 99
Voltage setting, 58

Winchester
controller replacement, 24
diagnostic error messages, 102-120
installation, 48
option test, 80, 101
removal, 35, 38
Write-protect tab, 81

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RainbowTM User’s Service Guide
This User’s Service Guide is intended for customers

of Digital Equipment Corporation who do their own
maintenance. Your comments and suggestions will
help us in our continuing efforts to improve the
quality and usefulness of our documents.

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