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EK-P100E-SV-001

April 1985

144 pages

Original

27MB

Document:	Rainbow User's Service Guide
Order Number:	EK-P100E-SV
Revision:	001
Pages:	144
Original Filename:	http://bitsavers.org/pdf/dec/rainbow/EK-P100E-SV-001_Rainbow_Users_Service_Guide_198504.pdf

OCR Text

User's :sen1ice Guide

,digJtai ·equipment ~~i:in-poration

First Edition. Apr11 1985
©Digital Equtpment Corpofatlon 1985. A!! Rights Reserved.
The information in this document is subject to change witl'\Out notice and should not be constrned as a commitment by Digital
Equipment Cofporatiori. Digital Equiprn.:nt. Corporatloo assumes no responsibility tor any errors that may apoear in th rs do<:ument

WARNJNG: The Rainbow computer nas been certified to comply.with ttle.limits,*or a Class B computing aevice, pursuant to Subpart J
ot Part 'f5 o{ f!:CC Rules. Only pertpherals (computer lnput/output crevmes. terminals, prmters, etc) certified to comply with the C1ass B
limits may be, attached to ttus computer. Operation with noncertitied peripherals may result in interference to radio and telev1sron reception.
This equipml:lot geneFates--and uses radio trequency energy and if not installed and used properly, that is, in strict accordance with me
manufacturer's \nstructlons. may cause interference to radio and television reception. It nas teen type tested and found to comply wlth
the limits tor a Class B computing device in accordance with the specifications ln Suopart J of Part 15 of FCC Rulecs, which are
designed to provide reasonable protection against such interference in a resicrentla! inst.tl!arlon. However, there is no guarantee that
int&rterence. W1ff not occur m a particular installation. lt this equipment does cause interference to radio or television recer,.1tion. which
can ;;e. derermmec by tuming 'he ;~ou1oment otf and on. the us.er 1s encouraged to try to correct me :ntenerence tN oM or "'10re of •n!'l
t~lkYJ.ling measures:

•

reorient· the receiving antenna

·· "' move the comput&r ·aWa.y' trom the receiver
"'· plug tM computer into a different outlet so that computer· and recelnr are on different 'branch circuits.
H'.rnlceau.ry, \'lie .user sbOuld consult tne dealer or an experienced radio/teievlsion techn!Ctan for aodittonal suggestions. The user may
find the toiwwing boo~let preparoo by the Federal Cominuni¢3Ji~l,'l~ Comm•ssion helpful:
How.,to.,Jdenbfy and Resolvt: Radio-TV lnterferencs Problems

This tJool<let is available from the US Government Printing Office. Waspin9ton, DC
Stock No 004-000.00398-5.
·

20402.

T!te i;ianuscript tor this book was creaH>d i..1s1rn;i a OIGtiAL Word Processing System aM, vta a translation proqram, was automatically
'.Vpeset on DIGITAL s DECset Integrated Pu0Hsn1ng System.' 6'')l)k:'proouct1on was aooe by Eaucauonai Services ne11eiopment anc
?ubilsning !fl Littleton and Marlboro, MA.
3088™ 1s a trademark of intel Corporation.
230<9 I:> a registered iraoemarn :;i ZHog, lnc.
The following are traoemarl<:S ot Oig1ta! Equioment C.:imoratioo:

Dmll""
DEC

DECmate
DECsystem~ 10

OECSYSTEM-20

OECUS
0£Cwtiter
Printed 111 U.S.A.

OlBOl

RSX

MASS BUS
POP

UNIBUS

P/OS
Professional
Rainbow
RSTS

VAX
VMS

Prefoce ........................... ~=-~!llH·-·····-···················il·········•·,,•.···························~--············ v

Removal and Replacement Instructions~""·····............."............,........................... 1
Appendix A. Troubleshooting ..................

u ••••• u . . . . . . . ........ ................................

Appendix B. Rainbow Computer. Parts ...................................~......,.. .......... 121
·Index ....... ~ ..............................................................................................................···'······ 129

Preface
This service gmde provides instructions for 1·emovmg
and replacing major parts of the RaiuoowrM computer.
Monitor messages. identify failing parts when you turn
the mmputer 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 iogicai sequence, from the procedures you
should do first to the procedures you :;hould do last.
However, each removal and replacement procedure is
independent and you can begin with step 1 of any oper·

ation. After insraUing a new part, use the ~esct:. p:roce·
dure on page 7 4 to d1eck the installation.

If you need help at any time. call the appropriate Digi·
tal Fielp ~ine number listed ur~ page 'L26~ .·~f you ne~ci
assistance in diagno~ing a probiem, Digital' s 5ervu::e
organization ,)f 16,000 representatives worldwide !s
ready to heip.

Removal and Replacement lnstructjons
Introduction
The Rainbow computer s design makes it c:asy ior
users to remove an<l replace defocrive parts. You can
discorm!!!tt most major parts Without using any too}s.
B()th the keyboard and the m1Jnitor are replaced as sin·
gle units; you do not open them up. You can bring the
entire system unit to a service cel,lter for repair, or you
can remove its top cover and replace the failing diskette drive, power supply, fan assembly, system mod~
ule, or other modules yourself.

svsTEM UNIT

CAUTION

Avoid static when handling computer
parts that ha"·e electronic components,
such as modules 11r language ROMs.
Keep these parts in their boxes or packing
matenal until you are ready to insraH
them, Do not walk across a carpeted t1oor
while hoiding an u:nwrapperl module or ROM.

":?

I',,,,,,

-""""'"'

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

Keyboard Removoi
Step 1, Rernove any diskettes fo)m the diskette
drives. Close the drive doors.

Step 2. Set the power s\\itch to 0 (off) and unplug
the power cord.

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

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

''..''.~

(~
""\'\

Keyboard Removal
Sf ep 5. Remove the niagenta label stnp from 1mder
the dear plastic cover and save it to install on vour
new keyboard. Do not try to remove the red strip from
the same place; it is giued do">.'n.

Step. 6. Pack the keyboard in its original packing
material and shipping box~
NOTE
Refer to page 5 to install a new keyboard.

Keyboard lnstoUofion
Step l. Unpack the new keyboard from its shipping box.

Step 2. Make sure the power switch 1)n the system
unit is set to 0 \off).

Keyboard lns1oUation
Step 3. Make sure the keyboard cable is installed in
the groove in the bottom of the keyboard.

Step 4. Install

keyboard feet, if desired.

Keyboard lnstallotion
Sfep 5. Place the keyboard in front of the monitor or.
the system uniL

Step 6. Plug the keyboard cable int:o the back of the
monitor.

GO TO PAGE 14TO TURN ON AND TEST THE
COMPUTER
I

SYSTEM UNIT

Monitor Removal
Step l. Remove any diskettes from the diski=tte
drives. Close the ddve doors.

Step 2. Set the power s'\.\ritch to O

the power cord.

and unplug

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

Step 4. Loosen the thumbscrews on the monitor
cable; Uien, disconnect the
from
momtor.
NOTE
Pnck the monitor in its 1;;riginai packmg
material and. shipping box.

Monitor lnstalloUon
Step 1.

Unpack the monitor from its shipping box.

Step 2. Make sure the power
unit is set to 0 (off).

on the system

Monitor.1nst0Hot1on
Step 3. Connect the monitor cable to the monitor.
Tighten the cable's thumbscrews.

Step 4. Plug tbe keyboard cabie into the monitor.

GO TO PAGE 74 TO TURN ON AND TEST THE
COMPUTER.

Removing System Unit from Floor Stand
Step 1. Remove a11y 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 Untt from floor Stand
St&p 3. Wait a few seconds until you he.ar a .beep
frmn the keyboatd; then, set the power switch to
0 (off).

Step 4. Insert the protective card, saved when you
installed yout system, in. diskette drive A (and diskette
dhve C, if present). Se sure the printing on the card
faces left Close the drive doors~

Removing System Unit from Floor Stand
S1ep 5. Unplug the power
from the wan so:cket.
Open the rear door of the floor stand and remove .the
power cord and
cables from the system unit.

I
iul'--JPLUG POVVER CORO

TURN THUM8SCRE\.i\1S
T{') LOOSEN

Step 6.
stand.

Lift and slide the system unit out of the floor

Removing System Unit fro.m floor Stand

System Modula (Main Board) Removal
Step l. 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 O (off).

System Module (ty1ain Boord) .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.

................................

Step 5. . Remove the cover by puHirig. the. cover

release tabs towa.rd ·you and CfUt until they lock in
place. Lift the e0vet straight up al'l.d put it aside.

TUl'lN THl!MGSCREWS
TQ 1..00St'iN

System Module (Moln Boord) Removal
Step 6. Rernove the power cabie from the power

Step 7. If a hard disk drive cable is present. remove

supply; then, remove it from the system module.

it from the system module before

NOTE
If you have a hard disk -Orive, go to
'/

the power
cable from the system module. Leave the ground dip
attached.

System Modufe (Mo.in Boord) Removal
Step a. If diskette drive Cf D is present, remove its
tlat cable from the system module by pull!n.g on the
pull tab. Leave the cable's ground dip attached.

Slep 9. Use the pull tah and remove the fiat cable
for diskette drive AlB from the system module. Leave
the ground clip attached.

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

Step Hl.

Use a coin and loosen each thtimbscrew <)n
the rear panel of the system module slightly. Repeat
until you can slide the module out of the system writ.

SYSTEM
i\t()C:UlE

Remove the RXSG controller board (page 21).

Remove the memory board ipage 22).

Remove the extended communications board
(page 23).

Remove the hard dlsk controller board (page 24).

Remove the color/graphics board (page 25).

Remove the language ROM if you are using a ke'.;board other than that used in North America and
Australia (page 26).

NOTE
Refer ';;J page 30 to

module.

RX50 Controller Boord Removal and Reptocement
Rem ova#
Step l. Remove the system module (page 16).
Step 2. Press. the top ot the standoffs and connector
dip away from the RXSO controller board to loosen it.
Then. lift the board out of its connector.

STANDOFF

CONNECTOR Ct.if' .

Replacement
Step l. Place the RXSO controller board on the
standoffs and connector and pre.._,s the comers of the
board so the standoifs and connector dip lock it in
piace,
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).
STANOOFF

CONNECTOR -Gli?

CONNECTOR

Memory Board Removal and Replacement
Removal
Step l. Remove the system module (page 16r

Replacement

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

module.
Step 2. Press the board down firmly at eath
oft and at the connector. Make sttre the connector is
secure.
Step 3. Install the system module (page aO).

Step 1. Align the connector on the memory board
with the connector of the same size on the system

STANOOFF

Extended Communications Board Removal and Replacement
Remo vol
Step l. Remove the system moduie (page 16).
Step 2. Press the top of the standoffs ourward to
1oosen the extended communkahons board; then. lift it
out
its connectors.

St$p 3. lf you also replace the system module,
rem,}ve the plastic option plate in the system module
rear panel and save it (A new system module does not
have the plastic· option plate.)

Replacement
Sf ep 1.

Install the plastic option plate ln the rear
panel of the system modu1e.
Step 2. Hold the communicatlons board componemside down. fit the metal cable connectors in the openings on the rear panel of the

module aligning
the plastic connectors with tho~ on the system
module.

Step 3. Press the board down firmly at its plastic
connectors and standoffs ..Make sure connectors are
<oecure.

Step 4. Install the system module
COM?ONcNT-S!DE

METAL
CABLE

OPilON 'PLATE

30).

CONNECT OAS

~
\ ~

DOWN\

;

CONNECTORS

Hard Disk Controller Boord Removal and Reptacemen1
Removol
Step 1. Remove the
module (page 16\
Step 2. Press the top of the standoffs i:mtward to

Replacement
Step ! . Install the spacer on the hard disk controller
board. 1f the connector clip is missing, install one on

ioosen the board; then. lift the board straight up out
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 dip for use on the next
system module. Order new spacers (74-29790·01) if

needed.
j

STANDOFF

the system module.
·
Step 2. Hold the hoard component-side down and
align its connectors with the connectors of the same
size on the system module.
Step 3.
the board down firmly at its connectors and standoffs. Make su:re connectors are secure.
Step 4. Install the system module (page 30),
STANDOFF

Color/Graphics Board Removal ond Replacement
Replacement

Removal
Step i.

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 I. Hold the board component·side down and
align its connector with the connector on the

module.

Step 2. Press the boa.rd down firmly at its connector
and standoffs. Make sure the connector is .secure.
Step 3. Install the system module (page 30).

CONNECTO~ j

Language ROM Removal
The fa'mguage 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

module (page 16).

Sfep 2.

Remove any option board !extended commu·
nicatiGns
23) c.r hard di:sk controller (page 24)]
that covers
language ROM.

NOTE
The model PClOO·A
module
a
!anguage ROM as shown opposite, If you
have a model PClOO;B, it does not have
this ROM, and you should go to &tep 1t

Step 3. Hold the ROM by its tabs and pull it firmly
out of the socket. D•:i not pry the ROM from only one
end or you may damage the socket
CAUTION
Avoid static. Do not walk across d
floor while holding the ROM
~Nhen it ~3 :;.ct ~-a ir.s box,, Rathe:, ;>lace ~he
old ROM in the box that contained the
ne\v ROM.

Language ROM Removal
Step 4. If you have a mo<lel PClOO~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 tloor 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 L If YiJU

a mociei PClOO~A system module, ahgn the new language ROM over the socket on
the system module

NOTE

Step 2.
the ROM firmly in the socket by pressing down only on the ROM tabs.

NOTE

When you install a new language ROM.

If you have a model PClOO·B, go to
step ~),

the cover on the new ROM comes off
;rntomatically.

\_)

_At\GUAGE ROM

.SGCKE.T

Language ROM Replacement
Step 3. To install a new lan,

ROM in a model
Min its conductive
fcram against the system module to remove any static.
PClOO~B, first gently press the

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 l>f all the other

chips.

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

Step 6. If previously removed, install the extended
communications board (page
or hard disk controller

board (page 24).
Step 7. Install the system module {page 30).

STRAIGHTEN ?iNS AGA1NST A TA8LETCP

System Module (Main Boord) Replacement
Step 1. Place the system module m the guides and
slide it into the system unit. Tighten each thumbscrew
:>lightly; then, use a com to tighten each screw alter·
until each screw is tight.

-,·--·-II
!

:;>VST!":M
~..100UL£

TURN TO TiGHTEN

Step 2. Conned the

drive A/B flat cable to
its connector on the system module. Make sure rhe
cable's ground dip is attached.

System Module (Main Boord) Replacement
Step 3. lf present, connect the flat cable from dis·

Step 4. Plug the power cable into the connector on

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

the 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 dip is attached.

Step 6.

Plug the power cable firmly into power su.ppiy.

System Module (Main Boord) Repfocement
Step 7. lf a hard disk drive is present, make sure its
cable lies flat across the diskette drive.

Step
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 w
make sure it is secure.

GO TO PAGE 13 TO INSTALL THE CABLES.

CABLE Mvsr UE
FLAT HERE

/
l

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

Step 2. Set thf: power switch to I
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 O (off}.

I
II

I
i

Diskette Drive Removal
Step 3. Insert the protective card in diskette drive A
{and diskette drive C, lf 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. Unp1ug the pnwi;r cord from the wall socket;
then, remove it and all other cables from the
of

the system unit. if the system unit is in a floor stand,
remove it (page 12).

Diskette Drive A/B Removal
TO REMOVE DISKETTE DRIVE A/B, CONTINUE
WITH STEP 5 {PAGE 36).
.
REMOVE DISKETTE DRIVE C/D, CONTINUE
W1TH STEP 7 (PAGE 37).
TO REMOVE THE HARD DISK DRIVE, CONTINUE
WITH
9 (PAGE 38).
Step 5. Remove the ci:rver by pulling the cover
release tabs tm:11ard you and out until they lock in
;iiace. !Jift 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 pendl, press down on the latch in
front of the diskette drive and siide the drive out oi the
system urut.
FlAT CABLE ANO GROUND CUP

Diskette Drive C/D Removal
Step 7. Remove the cover by pulling the cover

Step 8. Unplug the 4·wire power cable from the top

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

of diskette drive C/D. Then, disconnect the flat cable
from the drive and detach its ground clip from the
ground !ug. With a pencil, press down on the latch in
front of the diskette drive and ';lide the drive out of the
system unit.

4.wrnE CAIRE

Hard Disk Drive Removal
Step 9. Remove the cnver
pulling the cover
release tabs· toward you and out until tney lock iri
the cover strmght up and put it aside.

Step i 0. Pull the ground dip 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.

Hord Disk Drive Removal
Step 1 L 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
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.

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

NOTE
Before replacing the dlsk

replace
the hard disk drive cable
another
cable to :5ee if the cable is causing a prob!etn. See steps 12 through 15. -

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

Hard Disk Drive Coble Removal
Step 1:2. To re.move the hard disk drive cable, first,
unplug tJ1e power cable irom the power supply.

Step 13. Unplug the hard disk drive cable from the
system module and detach its ground dip from the
ground lug.

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

Step 15. Plug the power cable firmt_v into power
NOTE
To install the hard disk

go to page 48.

Diskette Drive A/B Installation
Step i. 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 is

f
l
j

!
II

I
1

CON!\IECTO~

SOCKETS

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

Diskette Drive A/B Installation
Sf ep 3. Connect the diskette drive flat cable to the
diskette drive and attach the cable's ground dip to the
ground lug on the power supply. Make sure the. other
e.nd of thls fiat cable is connected to the system module.

Step 4. Place the cover on the system unit. Slide the
cover release tabs iu and away from you until they
spring back, locking the covet. Try lifting the cover to
make sure it is secure.

CONTINUE WITH PAGE 73.

Diskette Drive C/D Installation
Step l. Unplug the .,},wire
cable from diskette
drive
Then, di:>conned
cable
too
the drive and detach its grm.md dip from the power
supply. With a pencil. press down (Yl1 the latch in frum
of dBkette drive AIR Slide the drive forward, but do
nm remove it.

Step 2. Hold diskette drive
with its sockets fac·
mg up and slide it partially into
system urnt on irs
track;;. Place the folded cable bet\veen the nower sue·
ply and both diskette drives.
·
·

Diskette Drive CID lnstoUation
Step 3. Piug the 4·wire cable and the flat cable into
diskette drive C/D. Then, push both diskette drives into
the svstem unit Pull on each to make sure thev are
secure, Attach the cable's ground dip to the ground lug
on the power supply,

Step 4. Make sure the other end of the flac
diskette drive C/D is mstruled in its connector on the
system module and that its ground.
is attached.

Diskette Drive C/D lnsto!lation
Step 5. Plug the ·i-vnre
mto its socket on dis~
kette drive A/R
the ~1at cable to the diskette
drive and attach the
clip to the ground lug on
the power supply.

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

Diskette Drive C/D Installation
Step 3. Plug the 4-wire cable and the fiat cable into
diskette drive CJD. Then, push both diskette drives into
the system unit. Puil on each to make sure they are
secure. Attach the cable's ground dip to the i_.."T'Ound lug
on the power supply.
FLAr CABL!i ANO GROUND CUP

-----

Step 4, Make sure the other end of the flat 12able for
diskette drive C/D is installed in its connector on the
system module and that its ground dip is attached.

Diskette Drive CJD Installation
Step 5. Plug the 4-win; cable into its socket 011 dis·
kette dnve A/B. Connect the
cahle to the diskette
drive and attach the
to the ground lug on
the po'l.ver

Step 6. If present, remove the fiUer panel

system unit cover, Place the cover upside~down,
unscrew the two Phillips screws, and remove the

Diskette Drive C/D instoHotlon
Step 7. Place the cover on the system unit. Slide the
cover release tabs in and awav from vou until thev
spring back, locking the cover. Try lifting the cover to
make sure it is secure.

CONTINUE WITH PAGE n.

Hard Disk Drive Installation
Step 1. Slide the hard disk drive partially into the
system unit on its tracks.
CAUTION
careful not to drop or bump the hard
disk t:.rive. It is a delicate predsmn instrument, subject to damage from sudden
sh.c,,.~k or movement.

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

HARD {)!SK DR !\/E CA9~.E

Hord Disk Drive JnstaUoflon
Step 4. Push. but do not slam, the hard disk drive to

Step 6. If missing, install a filler pane! Jn the system

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

unit cover.

Sfep 5. Connect the ground dip of the hard disk
drive cable to the ground lug on the power suppl]'.

NOTE

NOTE
You can order a filler panel, part number
74-271 Hki'Jl, from your local Digital sales

office,

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

Hard Disk Drive Installation
Step 7. Place the cover on the system unit. Slide the
<:over release tabs in and away from you until they
spnng back, locking the coveL
lifting the cover to
make sure it 1s secure.

CONTINUE WITH PAGE 73.

Power Suppfy Removal
Step 1. Remove any diskettes from the diskette

Step 2. If you have a floor ~tand, remove the system

drives. Close the drive doors.

unit (page 12),

Step 3. Set the power switch to 0 (off),

Power Suppty Removal
Step 4,

Unplug the power
from the wall
then, remove it and all ot.he:r cables from the back of
the system unit

TURN -'!'"HUiv10SCi~t;',;VS
TO ~~OOSE~J

Step 5. Make sure the diskette drive doors are
dosed. Remove the cover tw
tab::> toward y(lu and out until
in place.
the cover straight up and put it aside.

Power Supply Removal
Step 6. Remove the power cable from the power
suppiy; then, remove it from the srstem module.

NOTE
If a hard disk drive cable is present,. y0cu
must remove it from the svstern module
before removing the power cabte.

Step 7. If diskette drive
is present. remove its
flat cabie from the system module; then, detach 1ts
ground dip.

Power Supply Removal
Step 8.
the oull
and remove the fiat cable
t;x diskette drive ~~tB from the system module; then,
aetach its ground cap.

!
!

....___

Step 9. Unplug the 4-wfre cable from the top of dis·
kette dnve A/B. Detach the ground clip on tbe flat
cable from the power supply. Leave the flat cabie connected to the diskette ddve and fold it over the top of
the diskette drive.

Power Supply Removal
Step 1O. Unplug the 4~·wire cable from the top of

diskette drive C/D. if present. Deta~h the ground dip
nn the fiat cable from the power supply,

Step 11, Jf you have a hard
drive, pull the
ground dip <'Jf 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 p;j:rtfaHy forward.

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

Step 13. Squeeze r.he ends of the two
assembiy
p!ugs 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.

l
l

~ ,
j

·1

II
l

Power Supply Removal
Step 14. If your power supply has a 2-wire piug
going to a connector :H the front oi the fan assembly.
pull this plug out of its ~onnecto~, Remove the
fmm any hoki·down dip on the side of the fan a;i>semb!y.

Sfep 15. Pull down the latch or1 the side of the pow-

er supply (or slid!• the
on
uni;: tovi~rd
its rear), nlt
power supply up, and remove rt
rhe
umL

l
!

Power Supply tnstaUation
Step 1.

ldentify the plug on

power cord.

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

NOTE
In North
countries,
volts is
common: 230 volts is common ln most
othll:'r countries.

I
I
Ii
l

110V/115V/120V'125V

Step 2. Check the voltage switch on the new power
supply. If necess.1.ry, use a pen to set the switch to the
correct
NOTE
In North American countries, 115 vc>lts 1s
common; 230 volts is common in most
other countries.
CAUTION

An mcorrect voltage setting can damage
your computer.

I
iN NORTM

AM£ RICA, THE
SW!TCH iS

ALREAOYSH
AT 11SV.

Power Supply lnstotlation
Step 3.

r;lt th<; power supply and insert the angle
bracket imo the slot in the system unit.

Step 4.

Press down on the power supply i:!nd Iock the

latch. Try puUing up on the power supply to make ;;ure
it is locked Ll1 pla.ce.

Power Supply lnstollotion
Step 5. ConrH::ct
power supply.

two fan assembly plugs to the

Step 6. If the fan asseml::iv has another c0rmector at
the fronL piug the 2-v.-ire plug from the power supply
into that connector.
place this plug so it will
not interfere with
the top cover.

Power Supply Jnsto!.Jation
Step 7. Jf you have a hard disk drive, plug its 4~wire
cable into the drive. Make sure the other cable connec·
tors are securely attached to the driv~.

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

Power Supply instollotlon
S1ep 9. Plug the 4~wire cable
dnve C[D; i1 present

the top of

Step l 0. Fasten the ground c:hp on the
drive C/D flat cabie, 1f present. to the
top of the power supply,

Power Suppiy Installation
Step 1 L Piug the 4~lkire cable into the top of dis~
kette dnve AJB.

Step 12. Unfold the diskette drive A/B fiat cable

from ~he top of the drive. Fastf'!n the ground dip on
the diskette drive AiB flat cable to the ground lug on
top of the power :mpply,

Power Supply lnstollotion
Step 13.
connecror on

the drive A/B flat cable into the
systern rnodule. Fasten its ground dip.

Step i 4.

Plug the diskerxe drive
the connector on the
dip to the ground

its ground

Power Supply !nstoHoHon
Step 15. Plug the power cahie into the system module.

Step 16. If present. plug thE hard
firmly int,<J it,s c-0nnector on the '.5ystem mndule.
its ground dip tlJ the ground lug,

Power Supply lnstanatlon
Step 17. Plug the power cable firmly mtt1. power supply.

Step 18. Place the top cover on the

uniL

Slide the cover release tabs in and away
you until
they spring back,
the cover. Try lifting the cover tn rna.ke sure it is secure~
WlTH PAGE 73.

Fan and Switch A$sembly Removal
Sf ep 1. Remove any diskettes from the diskette
d.rives. Close the drive doors.

Step 2. lf you have a floor stand, :-emove the system
unit (page 12).

Sf $p 3.

Set ;:he po,ver

to 0

.
~

~~·······,.

...

-~
~
~'

Fan and Switch Assembfy Removal
Step 4.

then. remove
the system uniL

the power cord from the wall socket:
and all other cables from the buck of

.Sf ep 5.
sure the diskette drive
are
dosed Remove the cover by pulling the cover :release
tabs toward you and out until they lock !n place. Lift
the cover ::;traight up and put it aside.

Fon and Switch 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 011 their wires.

Fon and Switch Assembly Removal
Step 9. Remove the three screws from the top of
the fan assembly \\'1th a Phillips screwdriver. Rock and
fan
out of its slots in the system umL

AC Ft.l>J ASSSMBLY iPC100·Al

DC FAN ASSEM!h.Y (PC10(Hl)

Fan and Switch Assembly Replacement
Step 1.

Place

assembly in the slots in the

system unit

Step 2. Install

three Phillips screws in the top of

the fan assembly.

"""
i 1!

Fan ond Switch Assembly Replacement
Step 3.
the two fan as3embly plugs to the
power supply. If your fan assembly has anor.her connector at the front, plug the two-wire plug from the power
into this connector. Place wires in hold-down
present.

Step 4. Place the top cover on the system unit Slide
the tt>ver release tabi-i in and awav from vou until thev
spring back, locking the cover. Try llfting the cvv~r
make sure it is secure.

CONTINGE WITH PAGE 73.

r-··--·

. --

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~\·!
!

I
I

l-.~~--72

Reconnecting the Computer
Step 1. Make sure the power switch is set to 0 (off}.

Step 2. Connect che cables and the power rnrd pre·
viously removed from the svstem unit. Plug the power
cord foto the wan socket. --

L___

Testing the Computer After Removing and Replacing a Unlt
~~~~~·~~~~~~~~~~~~~~~~~~~~~~~~~~~~~--~~~~~~~·~~

I, Se: the nower switch to 1
In a fr•w
sec<;nd::: .. yGu 'vil! hear a
then. the comDuter will
the Mam
~v1enu.
·
·

Rainbow 100

."'
c:

~<.:l.<t h>:;;i't'i r:Jci;,;e: C
::;:::1r! fr''.)•i: Di ,.,.q 8

$ ij.H ftr_.!ff? C,ir''-'t': '\.-\'"'
$X'!'1-C;J~_0 Snit '! ·~:;t

enrtF T1Nn't:•~~d ~..1.;-:.dit

Step 2. H vou see rhagonal
'"

a white back·
y0u can correct these (~ond~tions
and contrast controls on the

Testing the Computer After Removing and Reploclng o Unit
Step 3. If the display is still blank, or if you see a
mes3age at the top of the screen, go to page 87 for help.

Step 4. Insert diskettes,
A.
Insert a spa.re
A and dose its door.
B.

(fabel up) in diskette drive

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

mnmanma

Rainbow 100

A ! ttart tfi".'1l1

a start ttcm

C ·• -sril·rt from
C
:'J " :'!tan rnlm 0!4ve n

w ~ start. 'frnf\'i: Cttvie ·N"
3 -: ~.<e·cute Se.tr T.*st.

"!' : enter T ;;:_.rrff,tfial Mcae

Testing the Computer After Removing and Replacing o Unit
S nn the keyboard. The computer W"!Jl

~\fter Dne or rnore rninutt:!s (depending on the- cornput--

er's rrcemnry
vou 'Nill bear a wim and a beeo.
Then. the cornputei displayc; the Main Sysrem Menu.

Rainbow 100
V·f)f-S1Ql'l -0~.034
Ec~iiOtnert CCirJ'lc;ntt.Kl~

·;'.:.or;y<·igr,t f'::-i

R;;grn.-:. R~Sttf\le-0

s:01-: ·r-~:m

c;!.jft !r;;m Ut:vp ~:

:-ttn~ f:;;m

'/,;

f. 'an l f(Jr

\!'if"'

f'"it.;-;_:~H-& ::;~)t;

~r;lfH T-'..Hi:1i\1a! Mooe

t$$3

RAINBO\V COl\JPUTER

NOTE
a rnore ,;.t>tc.a1>.n
bnw diagnostic diskette.
page 77.

Testing the Computer After Removing and Replacing a Unit
Prereliulsite: Mter you turn on the computer. the ;;ystem must display rhe Main System Menu. If it is not
displayed. press the Set-l7 p key; then, hold down the
Ctrl key and press the Set-Up key again. It the com·
puter still does not display the Main System Menu,
refer to Appendix A tpage 87>.

fo:sert the RainbQW diagnostic diskette into
diskette drive A and close its d<.,'Ot.

Step 2. Type A on
The syst.:::m di~plays the Main Diagnostic
rt you have version
2.0 or greater, µress the Help key for mi:m~ itrforma·
tion on each choke.

lf the svstem does not
Menu, go to page 81 for

Sf ep i.

\/EAS\~JN :Z~O ff't'li'-rt~/--yi-

NOTE

,;::t,,~iprrnr,':'. Corotv. .stii:x:

The dlagnos.ric diskette can be ;;tarted

from any diskette drive shoo.id vou sus·

pect a drive is not working correctly.

17.!

''cYPE NIENU NUM8€i"< Trit'>J i'fll:i$S C:~et\J•c» 1 J
"'?RESS ·'}ia}o1 FQ~ .~MORE
i<,,fENU
•p;qess {S2.t·U~/ <.Ct,7ifu:t·Uo} ro
0YSTE!vi

..,! ...I

Using the Diagnostic Diskette
the
Choose the test yon wish to run
Main Diagnostic Menu.
A,
the Return
to check diskette

Step 3.

<lnves A
Remove the diagnostic diskette and
insert a spare diskette that ls not write~protected in
drives A and
rhen
the Return key.

instructions on the screen.

:Jf'ti'·Jt A

r:he

the instructions on the screen. The first test
checks drives A ;md B and n~quires your help to
insert and remove diskettes. The other tests nm
automatically and take about 10 miliutes,

_.1.,,"~0 B i""..:?i~•:,:<

I --"~"--"-"--~---""-::;-:.:::::
/,---,...

Type 2 and press the Return key to
computer.

\Jtlt(,'R'i '!3008!
~"'';t~l()l~Y Ctf.§JI
i-Jt!::~'.MY

:.st:r,uP;

~r,.,11.,_0fl~· -'A,A;N f:l(':::APQ: :\~~i\<tJ:PY f)'.;'8.} ~-,;;::=-; ':;Tf).:f:f: :1.&._"fA_ -("..1!=;~C~:;;.,v

t,.______________

r;..~~f.,; PR::,::.>;.£,. '"'~~;n>

)

----·~--

.~t the completion of rhe
the. system displays the
Main Diagnostic Menu followed by:

At the completion
the test. the system displays the
Main
Menu foHowed by:

Pi<EV!OUSLYR\.irlDRlVES A f~HDETt:ST-PASSt:DffAiLEDL

PREV:GUSLV RUI<! CDMPv<ER TEST PASSE'.D FAILE:C1).

n an error (iccurs, testing stops and the system dis·

a mE:ssage at the bottom of the :;;creen. Press the
key for more mformarnm on an error message.

Press the Help key for more informarion on any error

Using the Diagnostic Diskette
C.

Type a and press the Return key to display the

individual test menu..Follow the instructions on the
screen. See pages 99 and l 00 for a description of

each tesL
i <v•+•~••""'-'-~- .---~
..

I ; "1l

........

~- ,..4_..__ _,, INOIVIOUAL TEST MENU

'12!

MEMOAY :~m

K*Y9QA"10
Mt:MOR'I'

t'J!

Vt~O CQNT~Ot..~f.fi

C':-:J~AJNT'tR

'4]

01$i<

$YS~M •NTERAt-·ncN

1•

:;;CE6 AUONM:SNT PAf"f,e,;~
MfiMO~Y !lMi

i ;~j ,c.i~ureH :~ONFiQi~1:~
l

13!_

;.,t){')?t~Cl\

~21

f:ll

f41

-... -· ·-· ·.-· · -·--·· · · · · .. - ·- . . . . . -=J
' TYP'!O M'1;NlJ NUMl'lt';ll Tl4€'1 "i'<11SS <'~~lUffl> {Ci
"RESS <"1"'1>> f(YA A MOR!: OESC1'1l?TlVE MENU

' PRESS <5"t..iJ()> <CiWS..HiO"° fO RESTART SYSTEM

co1·na"'"'"'

(1!

I .. ,.~~ ....... ,,~ .. ~,.-·~·---~~--·-,,,~ PERFORM ONE OF THE FOttOW!N{;
1,:
,

PREVIOUSLY RUH lHD!VIDUAl T£ST • PASSED
_J'.lamoow
Oi.;tgnos~rl: t.'.1~:&.~e:tt&
:;opyr-.gm
1i-33 !Y1qs~-a:! ,\$;Wiprn.ant

...

M!f.M(';RY f8Q$B)

At the completion of the test .se!et:ted, the system displays the Main Diagnostic Menu followed by:

i\s each subtest or an individual test runs, the system
displays 1n execution time or count. Upon completion
of the subtest, the system displays "'PASSED'' 0r
"FAILED." Any foiiure will stop the test and display a
message at the bottom ::if the screen, Follow the
instructions on the screen and. if necessary, press the
Hdp key for more information on a failure message.
If ttie computer does nnt respond, reset the computer.
First, press the Set·t'p key. then hold down the Ctr!
key imd press the Set·Cp key again. If you cannot reset
the computer. ·3et the power switch to 0, then to L

r,1£/iu

Using the Diagnostic Diskette
.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Type 1 and press the Return key to inst.all a new'
diagnostic on this diskette, This .:hoice allows ;;·ou to
add
tests for optional equipment that you
may
to your Rambow computer.
choice

allows vou to
all the tests on one diskette, Follow thti instructions on the screen.

•

After the copy is completed, the computer
the Main Diagnostic Menu on the s.c.reerL

and m:ess the Return kev to check if the ni:::vJ
program utle has been added to the individual r-E:~.t
rnenu.

NOTE
You cannot use this feature if you have an
diagno:itic diskette, part
BL-T309A-BV or BL-T309B-BV.
Rt~move the 'vrite~pn:itect tab from the niain
nostic diskette, th<~n install ic in diskette drwe

(11MEMORY10038;
(2' MEMORY •8008fZ30l

-3; V1Cf:C>CONTl'IOL,LH<
t4J DlSK SYSTEM
[5] 0:..'MM;l"f\INT(f\'/KIOYBO.ARO PORT

Kf;Y'OOAfiD

•sf r

ME~,.'tJR.V
tJ?!
O:)\:~'t/PRF'-HER EJ(i L():Ofl?J\C:..·

SY":5!CM !NTEFtA,CT,(;N

till PR:NTER CONFiOENCE

• Insert the '?PW)n .diagnostic diskette m drive B,

rr: VIDEO .AJ.JGNfvl8'ff PArn.~fiN
:al MEll.«'JflY ilSO'

rnen press t.ne Ren.rrn

~~VPE i\1£Nu' NUMt:H::R THEl\i PRESS "R~:wrr"
';)RESS {He!p> FOR A MO~E DESCRlPTi\/f. r~iE\"-HJ

"PFf€$S t'$fi't-Up> {Cirus~r-Uci TO qEST AHT SY~_;"!"sr,,~

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

Installing System Unit in Floor Stand
Step 1. Open the door on th!':' floor stand. Position
the system unit, as
guiding the front edge near
the power s•vitcb ;wto the two ridges inside rhe stand.

Step 2. SUde the system unit into the floor stand.

Installing System Unit in Floor Stand
Step 4. Connect the cabies previously removed. Plug
in the po1.ver cord, Arrange th\~ cables as shown tn the

Step 3. Make sure rhat the front of the
unit
is foHy forward in the opening m the floor stand.

duor of the floor stand and run the prnver cord out the

NOTE

bottom.

There is a notch in the smaller ridges in

the door.

the floor srand t.o hold the system umt in
place.

1I
"';'URN f"Ht,,1M.BSCR::.n.vs

I
~

ro itGHT-EN

\I'
!

, I ..•
.
Trouo1esr100T1
~..

~·

The information in this appendix will help you solve problems in your Rainbow computer. 1f
computer does not
resp<md correctly when you turn it on or if a message is reported during its selftesr, the symptoms. possible causes,
and the appropriate corrective action are listed here. You sbould perform the corrective action in the 1:>rder

Incorrect Response
If you see no display on your screen, it could be caused by 1me of the following factors. Go to the !}age or table
referenced iu parentheses to correct the problem.
•

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

•

Power cord not piugged in.

•

No power at o:itlet

•

Monitor cablt: not plugged in (pages 11 and 73).

•

Circmt breaker on back oi system unit out (page 8:3).

•

Check lights ?t back of system unit for possible cause {Table A·l).

•
•

Power c<lble is not firmly connected to the system module \page au 0r to rhe power suop!y (page 32).
Plugs betweo::n the fan assembly and the power supply are nor firmly cormected (page

Troubleshooting
•

If fan is turning slowly but making no noise, the voltage switch at the batk of the power supply is set to 230 V 'Nhile
you require 115 V

•

Any of the following

may be

swap

a known gnod part if available.

con! (page 14)
.iV11mitor cable (page

',C""'+,,~, module
Fan assembly (page

.Monitor (page 8)

Power

tpage

Language ROM

t:viessoges
displays CONSULT USER'S GUIDE FOR ASSISTANCE or SEE OWNER'S MANUAL on your :;cn·en
take the corrective action indicated after each me;,;sage. Tht: words m
the model PClOO~A Rainbow cornpuwr displays on the screen.

one of the following
brackets after the message are those

Message l - Main Soard [v!deor
the ··~~·~'"
moduie (page 16)

several retries, replace the ;;ystem

Message 2 - ~,riain accrd runsoiicited interruptJ"
22) and nm the selftest again. H
rnodule (page 16).

your option~~! rn--~nivry hvard. RcrLove
without the rpemory board m the

Message 3 - Orlve A (or B) [Index]*
Message 6 - Drive A (or 6) [read}*
The diskette )s

is inserted incorrectly in the drive. or is for a different computer.

run ~he selftest program again. If the me:;sage
"he :>dftest program

rbe

insert another diskette into the drive and nm

Troubleshoot Ing
Make sure the drive ,~ables are installed <..:orrecdy, If the message still occurs, exchange the

or<ler.
•

Dlskette dnve (page 36)

•

Diskette drive cable (page 36)

•

RX50 controller module lpage 21)

Message 4 - Drive A (Of S) fmotorj"'
The diskette may be bent and ~~lowing down the motor. or the motor .may
rm1nit.ig t«)O
the
for
creases. Try another diskette in the drive .and run the selftest again. lf the message persists after trying several
diskettes, replace the diskette drive {page 36).

Message 5 - Drive A (or B) rseek]"'

The diskette may be unformatted. Insert another diskette inro the dnve; then, run the 5eiftest
If the
persists
trying several di;;;kettes, make sure that the diskette drive cables are installed ,.,,_,,.,.,,r, (pages 30 and
45). If the problem still persists, replace the diskette drive {page 36).
Mess.age 'J - Drlve A (or 6) trestor&l*
Message 6 - Drive A (or 8) [stepJ"
Make sure that the diskette drive \:ables are installed ~"~~,·~·"'
exchange the parts in the following order.
•

Diskette drive (page 36)

•

Diskette drive cable (page 36)

•

RXSO controller module \page 21)

:30 and

ff the rnes~age stiJI

* The wi.:-rd::> in brack~:ts after th-e n1e:ss,:H;:e are those ~hat the n10tie! PC 100.,.A Ro.inOOvi1' cornpw:~r ch:JpiJys .:">n rht~ sftf'~fL in sofh a ,~:,1'i£-. ~l'le
mes'><lge numoor is t1<!t displayed.

Troubleshooting
Message 9 - System Load Incomplete {system !oodJ"
Message l i - System Load Incomplete [boot loadr
The systern

•

The diskette in the drive is not a Rainbow operating system

The operating system program on the diskette is unread<ible. Use another copy of the diskette.
is blank and unformatted. Use a Rainbow operating

diskette.

Message i O - Mein Board {Video. vfrJ"
Swu:ch the computer power off and then on again. If the ~}roblem persists after several retries, replace the system

moduk

16).

Message 12 - Drive A {or B) {nof reody)'"
The computer displays this mes:>ag<: when you rnn i:he selitest program if any of the following occur.
'into

ln drrve

•

cQrrect the

:\.

reinsert the diskette into the drive.

~The t:ri.ve door ls nvt closed~ Close the drive door~

the selftest prograrn again atter correcting the """"'"''"''~" If tht.s mes,sage
make sure that the diskette
drive cabies are mstall1;d
30 and 451. If the problem still pe.rnsts, replace the diskette drive

Troubleshooting
Message l 3 - Keyboard
The computer displays this message when you switch its power on if the keyboard is noc. cmmected, a
is
depressed, or the keyboard is not working properly, To correct the problem, s'Witch the computer power t)ff; then,
check the follov..ing.

•

Make sure that the keyboard cable is secured to the back of the monitor and to the bot.tum of the keyboard
6 and n
Make sure the video connector (VIDEO) is securely conneeted <page 11).

•

Check for any keys ::.1iat may be stuck by running your fingers over the top of the keyboard keys.

•

Switch the computer power on. Make sure you do not press any keys while the computer is going through its
poweN1p test.

•

If the message persists after several retires. replace the keyboard {page 2).

Message l 4 - Main Board r1wm doto1•
The computer displays this message when you switch its power on if the pre'i"ious Set-Up selections are not read
correctly, The Set-Up selections that were previously saved are not in effect.
Recall the default settings
])ressing <Shift/O> and save them by pressing <Shift 1
Swm:h the c::omputer
power off and then on again. If the message persists after several retries, replace the system module !page 161. lf
the message is not displayed, review the Set~Up selections in your Owner's Manual for any foat are specific ~o :mur
computer.

"The words in brnckers afte.r the mess.age are those thar the model PCIQL).A Rainhow <;tlfilputer displays on the screen. fo such a •:ase, the
'nessage nwnoer is not displayed.

Troubleshooting
Message 16 - Interrupts Off
The computer dispiayc; this message when you switch its power on or while you run an application program. This
message is displayed in three ways.
1

If
mes~ge appears alone on the screen, sw1tch the computer nff and then o:n again. If the message persists
after several retnes.
the
module (page 16).

If the message a~pears abnve the Main System Menu, switch the computer power off and then on agairL If the
message persists after several retries, replace the system module (page 16).
3.

If the computer displays the message while h is running an application program, remove the
prognnn
diskette and
the computer power off and then on again. If the computer does not display t..lie message when
you switch the computer power on, rerun the application program. lf the computer displays the message while
runmng the appiication program or, ii you wrote the program, chet:k the program for a "bug" that has turned the
interrupts

Message t 7 ... Main Boord {Video ramJ"
Message l 8 - Main Boord (Z80 crcr•
Message 19 - Main Boord (ram 0-64KJ*
Message 20 - Mein Boord funsollclted interrupt, ZSOJ""
Switch the computer power off and
moduie (page 16).

Message 21 - Drive Not Ready
computer displays this message when you attempt to start the operating system if any of the following occur.
•

The drive door is not dosed. 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 <iligning the orange arrow on
the diskette with the orange stripe on the diskette drive.

•

Drive C. D, or Wis specified on a computer without the optional drives, or their cable.'> 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). ff either message still persists, replace
the diskette drive (page 36).

Messoge 22 - Remove Cord 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 on the
power.

• TI1e diskette in drive A is _upside-down. To correct the problem, remove the diskette and i.'lStall it correctly,
alignmg the orange arrow on the diskette with the orange stripe on the diskette drive.

Message 23 - Non~System Diskette
The computer displays this n1essage when you attempt to start a diskette .without first loading the operating system
diskette. To correct the problem, insert an operating system diskette into a drive and start the operating system.

Message 24 - New Memory Size = nrmK
Ii yf)u have just installed or removed additional memory, the computer displays this message Mli}' once when you
first switch the computer power on. Confirm that the number lnnnK) is the correct amount ot memory. If
message appears ::md you have not installed or renwved memory, make sure that the memory ooard not loose .

.. The words in brackets after the inessage are those tht tile modei PClO(h~ .Rainbow computer clisplavs '•fl tile scr'l:en. ln such a ease. the
message m.i:rnber is 110t displayed.

Troubleshooting
Message 25 - Set~Up Defaults Stored
The
the part

displays this message when you switch the power on to indicate that it found and corrected a problem
the computf.:r that saves your Set-Up selections. If you receive Uris message in a model PC10{H3

computer. you are at the language selection mem.t The Set-Up selections
you have previously saved are not m
the default selections (those set at the factory) are in effect. The message is informative
Reset and save the Set-Up selecti(:ms you require. (Refer to your Ow>t1er's Manual.)

Message 26 - Main Boord rram arbitration]*
Switch the power off and then on again. If the message
(page

after several

replace the system module

Message 27 - Memory Board [ram option]*
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 nm the
again.

Messcge 28 - RX50 Controller Boord

::he

off and then en again. Ii the
and insert it again. \It may have JO(>s~;ne:G
controller board.

rernove ~he RX50 c:YntroHer
If the message

Message 29 - Moln Boord [Z80 response]*
The computer displays this message when you switch the power on f1r when you start the operating system. Turn
rhe computer
then on again. Make sure you are iwt usmg a VT180
diskette. Insert another Rainbow
operating system diskette into the drive and start agam. Jf the message
after several retries, make sure that
tiie RO~ls are seated firmly (page 28). If the message persrnts. replace the system modme (page 16).

Troubleshooting
Message 30 - Main Board {rom ere, rom OJ"
Message 3 i - Moin Boord from ere, rom l l*
{Main Board, rom ere, rom 21*
Switch the computer power off and then on again. If the message persists after several retries, make z;uxe that the
ROMs are seated firmly (page 28). If the mesgage still persists, replace the system module (page 16).

Message 33 - Main Board [eontentlonr
Switch the computer power off and then on again. If the problem persists after several

replace the

module (page 16).

Message 40 - Main Soard [printer port}"
The computer displays this message when you switch its power on if the printer connector on the back of the
system unit is not working correctly. Tum the computer power off and then on again. If the message persists aft.er
several retries. replace the system module (page 16},

Message 50 - Main Soard fkeyboard portJ"'
Switch the computer power off and then on ag;1in. 1f the problem persists

several

replace the

moduie (page 16).

Message 60 - Moln Boord fcomm. pottJ"'
The computer displays this message ~·hen you switch its power on i.f the comrnunications ctiitr:ector on the back
the sysrem unit is not working correctly. Switch the computer power nff and then on again. H the problem
after several retries. replace the :>ystem module (page 16).

• The words tn brackets after the message atrl rhose that the model PCHlO-A Rarnbow computer

messa1$e number is not displayed.

Troubleshooting
Table A·1 lists each message and Its corresponding iight display, You will see the light display on the back of the
system unit. The words in parentheses are those that the model PClOO-A Rainbow computer displays on the screen.

Table A~ 1, Internal Diagnostic Test Massages

Message
Number

Message

Main Board (video)

Main Board (unsolicited interrupt)*

Drive A or 8 {index)

Ught Dtsploy
l 2 3 4 5 6 7

Drive A or :S (motor)

Drive A or B (seek)

Drive A or B fread)
7

A or B \:restore>
Drive A or B (step)

System Load focompletet (system load)

Mani Board (video, vfr)

System Load Incompletet {boot load)

Troubleshooting
Tobie A· I, Internal Diagnostic Test Messages (Cont)
Message
Number

Message

Ught Display
l. 2 3 4 5 6

Drive A or B (Mt ready)

•

Keyboard

Main &Jard (nvm data)

Interrupts Off'"'

•

Main &ard (video ram)

Main Board {Z80 ere}

Mam Board (ram 0-64-K)

••

•

Main Board (unsolicited mtem1pt, Z80)"'

Drive Not Readyt

Remove Card or Diskette

Non-System Diskette-r

• = on. o ·:= off, - ""on or off
"' These errors can occur at anv tune because their circuits are monitored constantiv.
t These messages may occur during poweM.ip ii auto-boot is selected.
97

Troubleshooting
Table A· I. !ntemol Diognosilc Test Messages (Cont)
Message
Number

lighf Display

Message

1 2 3 4 5 6 7

New Merm:1ry Size = nnnK

Se1~Up Defaults Stored

{)

()

Board

arbitration)

Memory Board (ram opticm)

RX50 Controller Board
Main Board* tZ80 response)

Main Board {rom ere, mm 0)

Mam Board Crom ere, rom 1)

Main Board, rnm ere, rom 2
40

Main Board

••••• ••
•

•

()

port)

Main Board (keyboard port)

Main Board (cor.nm. port)

~"'· on. o ""' off. - ""' on <:lr off;

" These errors can ficcur at any time bec:.mse their circuits are nioniwred constantlv.
+ These messages may ciccur d;1ring power-up if aut<rboot is selected.
·

•

Troubleshooting
Diagnostic Diskette Tests
The Rainbow diagnostic diskette in your system kit can help you isolate problems. The following paragraph:::. summa·
dze 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
4, Disk System from rhe Individual Test menu, to check drives C and D.

A and B

seiection

Test Computer
The Test Computer selection on the Mam Diagnostic Menu checks most basic Rainbow ci:m:tputer Iunction;s inchitling
extended memory. It dnes not check other options or the line drivers on each port. It is a
of individual
tests that run one after the other. The Test Computer selection takes about :30 minutes to run.
Di.splay Individual Test Menu
The Display Individual Test menu selection on the Main Diagnostic Menu d1spl.ays a menu cf 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 si.unmadze the individual test se!ectiorrn. You can al::!°') press
information on e:ich test.
l.

MEMORY (8088) - 'fhr: Memory (8088) rest checks the memQry !nduding the !?ptional memory board, if present.
if you repiace the memory board or add GOmpt:ments to the memory b<>ani, you use
test to
that :he new
memory board works correctly,

MEMORY (8:08B/Z80) - This test checks the memory that is shared between the two internai processors.

VIDEO CONTROLLER - This test checks the titning of the refresh signal, che<"ks internal loopback 3ignals, and
displays each of 1he special video capabilities on the screen for 20 seconds. You must \'iatch the s<:reen to check

Troubleshooting
these capabilities. To begin the displays, press the ResunH:
continue to the next dispiay, press the Rt:sume

. To hold a display, press the

key. To

DlSK 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: howew~r. it allows you to test drives C and D aiso.

COYvIM/PRlNTERlKEYBOARD PORT test checks all intemal data transmission
driver circuits, on .the system module. A loopbac:k plug is not required for tl>Js tesL

PRINTER CONF!D.ENCE - This test checks the printer.
the
keyboard, then press the
key again. To stop the test, press the

for the line

key. Type your test .mes;jage on the
key again or press the Return key.

VIDEO ALIGNMENT PATTERN - This test fins the entire screen with E's to help you check intensitf,
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~!3437H)O).
8.

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

~·t

KEYBOARD~ This test draws a keyboard on the screen with all of the keys an it. When you press a
, the
scn~en will indicate whether or not the key works. Press the Help key for information on excepth.:tns, To exit the

test, type the letters 0 CT
10.

MEMORY

11.

COMM/PRINTER EXTERNAL LOOPBACK - This test checks the commur11catio11s and printer :ircuirn rnduding
the line drivers on the system moduie that could not be checked with selection 5, You must inst.ail a loopback
'.part number 12-15336-01
model PCHJO-A or 12-15336-04 for mod.el PC100-B) on rhe COM.M connector and
a
piug rpan number 29-24631-00) on the PRINTER connector before you can run this test.

12.

SYSTEM INTERACTION - This test ~xercises ail system tasks at once to check for tuning problems, Han f::rror
is detected, the test reduces the number
tasks competing for system .resources to detect the failure.

13.

Not used.

100

- This test checks the nonvolatile memory that is used for savhig Set-Up selections after

Troubleshooting
NOTE
Tests 14, 15, and 16 are diagnostic tests that are shipped with each option. lfri.ing

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 versi"'fan LO of
the diagnostic. diskette {part numbers BL~T309A-BV and BL-T309£i.BVJ. Therefore, if
you have version 1. O. run these tests from the diagnostic diskette that comes v.ith the l'.'>ption.

14. COMMtJNICATIONS OPTION - This selection contains the internal and external diagnostic tests that come with
the extended communic;'ltions option. A loopback plug (part number 12.·15330.-04) is required

the external

diagnostic test.

15. GRAPHICS OPTION - This selection contains the color/graphics diagnostic that comes with the color/graphics option.
l!i WINCHESTER OPTION - This sel~ction contains the hard disk diagnostic (also on the Rainbow Hard Disk Utility
Program diskette) that comes with· the Winchester (hard disk) option.

Install New Diognostic 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

numbers Bt·T309A•BV or BL~T309B·BV).
Diagnostic Diskeffe Test Messages
Table A~2 lists the diagnostic diskette test rnessages, the po~sibie source or the problem. anri the \:arrective action.

101

Troubleshooting
iable A~:.t Diagnostic Test Messages
Messages

Possible source/
Corrective Action

Diagnostic Executive :Messages

SYSTEM ERROR: COMPUTER CANNOT FIND SUFFICIENT
MEMORY

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

SYSTEM ERROR: DlSK READ OR WRITE FAILED

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

RESTART SYSTEM

system module.

SYSTEM ERROR: COMPUTER CANNOT READ TEST FILE
FROM THE DlSK

Diagnostic diskette. Try another
diskerte.

SYSTEM ERROR: COMPFTER CANNOT READ MESSAGE
FILE FROM THE DiSK

Diagnostic diskette. Try another
diskette.

SYSTEM ERROR: COMPUTER NOT RUNNING
CORRECTLY

Replace system module.

Try another diagw;stic diskette.

Memory <Set-Up) Test Messages

FAILURE: MAIN BOARD: SET-UP .MEMORY DOES NOT
STORE DA TA CORRECTLY

102

.Make sure memory board is mstalled
correctly.

Troubleshooting
Tobie A~2. Diagnostic Test Messages (Cont)
Messages

Pos:Hbie Source/
corrective Acfion

FAILURE: MAIN BOARD: MEMORY STORES DATA

System mndul.e. Reph1c<': system

INCORRECTtY

IDl'ldule.

FAILURE: MAIN BOARD: CANNOT COPY SET-UP
;\fEMORY

Sy.5tem module. Repface system
module.

FAfl.URE: OPTION .MEMORY BOARD: MEMORY
STORES DATA INCORRECTLY

Optional memory board component.

If your memory board c,l!tne with a
Memory Test Procedur~. refer to that
procedure; otherwise, replace the

memory board.
Memory (8088) Test Messages

FAILURE: MAIN BOA.RD: INVALID SET~UP DATA FOR
OPTIONAL MEMORY

System module. Replace system
modn1e.

ERROR: OPTION MEMORY BOARD PRESENT: SET-UP
SHOWS rT lS NOT PRESENT

Memory sire is incon-er:t.

Make sure memory bo&::-d is
insta.Ued fi.rm(v in .!ts cotmecrors.
Check memory

ERROR: OPTION MEMORY BOARD NOT PRESENT:
SET-UP SHOWS rf PRESENT

Memt)ry size ls i11cor:ren.

Make sure memory board is
installed firmly in its connectors.

Check memory sfae.

103

Troubfeshoo1ing
Tobie A·2. Diagnostic Test Messages (Cont)

Messages

Possible Source/
Corrective Ac11on

Memory (8088) Test Messages

SYSTEM ERROR; COMPUTER CANNOT FIND SlJFFlCIENT
MEMORY

System moduie. Replace system
moduie.

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

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

FAILL
OPTION MEMORY BOARD: OPTION MEMORY
SIGNAL 1S INCORRECT

Replace memory board.

FAHJ.TRE: OPTION MEMORY BOARD: MEMORY SIZING

Memory board component. If your
memorv board came v.ith a Memorv
Test P~ocedure, refer to that procedure:
otherwise, replace fae memory board.

JN CORRECT

MEMORY TEST TERMINATED
TEST CANNOT CONTU,iUE ~PLEASE RESTART SYSTEM

104

Diagnostic diskette.

Troubleshooting

Possible Source /

Corrective Action

Messages
Memory (.8088/ZSO) Test Messages

FAILURE: MAIN SOARD: MEMORY STORES DATA
INCORRECTLY

System module, Replace
module.

SYSTEM ERROR: SYSTEM CANNOT FIND SUFFICIENT
MEMORY

System module. Ke1:na:{:e
rrmrltde.

SYSTEM ERROR: TEST PROGRAM.DOES NOT

Diagnostic diskette.

FUNCTION CORRECTLY
Diskette System Error Messages
FAILURE: MAIN BOARD: ILLEGAL lNTERRUPT TO Z80

Repeat test: if error persists,
replace system module.

ZBo DIAGNOSTIC FILE NOT FOUND
FAlLURE: MAIN BOARD: Z80 RESPONSE FAILURE
SYSTEM ERROR:
DIAGNOSTICS

MEMORY FOR

Repeat test; if me:1".sag.,,; ""'""'"''"
replace system mo<mle.

-:est: if rne8i..~ge; ,,.,,.~'"""
replace :;ystem moduie.

105

iroubleshooiing
Tobie A·2. Dh:::gnosnc Test Mes:soges (Cont)
Possible source/

Messoges

Corrective Aef!on

Diskette System Error Messages

FAILURE: RX50 CONTROLLER BOARD:
FORCED LOST.DAT•.\ (read)
FORCED LOST DA TA lwdte)

FORCED RECORD NOT FOUND {read)
FORCED RECORD NOT FOUND (write)
FORCED SEEK
HEAD LOAD TIMING
INTERNAL REGISTER

LOOP BACK READ
MOTOR SHUT OFF
NO TRACK GREATER THAN 43

RESTORE
SEEK FAILURE (with no verify)

WRITE SECTOR

106

Bad connection between
system module and RXSO
controller board; remove and
reseat controller board.
Run test again; ff message
persists. replace contrnller board.

Troubleshooting
Table A~2. Diagnostic Test Messages {Cont)

Messages

Possible Source/
Corrective Action

Diskette System Error Messages

FAILURE: RX&O CONTROLLER BOARD:
WRITE SECTOR

Could ·be a had diskette; try
another diskette and run test
again, lf message persists, remove

and reseat R.1:50 controller
board: .if ertor still persists,
replace RX50 controller board.
FAILURE: DRIVE X (where X =A. B, C, or D) DISKETTE WRITE PROTECTED
DRIVE NOT READY

Write•prote£:t tab is on. diskette.
Diskette is not inserted properly or

is upside·down; diskette drive door
is open.

INDEX PULSE

Diskette may be upside-do'\lr1l or
fa not spinning.

READ SECTOR

May occur after a write sector
faiiure. Could be a bad diskerte;
try another diskette.

SEEK (with verify)

Couid be a bad diskette;
try another diskette.

WRITE SECTOR

Could be a bad diskette; rerun
test using another diskette.

107

Troubleshooflng
Table A·2. Diagnostic Test Messages (Cont)

Possible Source/
Correenve Action

Messages

Diskette System Error Messages

NOTE
The following diskette drive error messages may occur from poor connection between
the RXSO controller board and the rliskerte drive. Reseat cables and rerun tests. 1f any
()f these errors persist, remove and replace the diskette dnve,

FAILURE: DRIVE X (where X ""'A,
MOTOR SPEED

or D) -

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

MULTI-TRACK TIMING

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

RESTORE

No track 0 signal coming from
drive; insert and remove protec~ive
card; try again; replace diskette drive,

STEP

Head chd not move in correct :nnount
ot' tune; insert and remove protective
card; try again; replace diskette drive.
Head did not move toward spindle
correctly; repiace diskette drive.

STEP-OUT

108

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

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

Possible Source/

Messages

Conectiv• Action

SYSTEM ERROR; CANNOT LOAD Z80 TEST PROGRA.i\1
FROM DISKETTE

Diagnostic diskette.

SYSTEM ERROR: TEST DOES NOT
FUNCTION CORRECTLY

Diagnostic diskette or

system module.

FAILURE: MA!N .BOARD: zso·FAILED TO START
M.EMORY TEST

System module. Replace system

FAILURE: !vtAIN BOARD: Z.SO FAILED TO COMPLETE

System module. Replace system

MEMORY TEST

FAILURE: MAIN BOARD: ZSO PRIVATE MEMORY DOES
NOT STORE DATA CORRECTLY
FAILURE: MAIN BOARD: Z80 CA}i'NOT COPY DATA TO
SHARED (280/8088) ME.MORY

FAILURE: MAIN BOARD: Z80 CANNOT RESTORE DATA
TO ZSO PRIVATE MEMORY
- TEST CANNOT CONTINUE, PL.EASE REST ART
SYSTEM -

FAlLURE: MAlN BOARD: Z80 DlD NOT EXECUTE THE
TEST CORRECTLY

module.
rooduie,

System module. Replace .syste1n
module.
System module. Replace
moduJe.
Start diagnostic diskette :;;~am:
rer4..'1
if problem ;;ers2sts,

module.
Diagnostic

system modole.

109

Troubleshooting
Tobie A~2. Diagnostic Test Messages {Cont)

Possible source/
Corrective Action

Messages

System Interaction Error MeBSages

FAtLURE: MAIN BOARD: COMM CHAN'NEL (A) ERROR

Retry test Ii error persists,
replace system module.

DISKETTE WRITE ERROR

I/0 ERROR
PRINTER KEYBOARD PORT ERROR
SYSTEM ERROR
FAILURE: DRIVE B: WRITE ERROR

ZSO DIAGNOSTIC FILE NOT FOUND
FAILURE: DISKETTE WRITE-PROTECTED

Try another diskette.

another diagnostic diskette.
Remove write-protect tab.

Video Controller Test Error Messages

FAILURE: MAIN BOARD: VIDEO ERROR
VERTICAL RETRACE RATE

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

FAILURE: lVtAIN BOARD: VIDEO ERROR
A LOOPBACK CHECK rs INCORRECT

The infonnation ~nt to the video
output is being altered. Replace
the system module.

Troubteshootlng
Tobie A~2. Diagnostic Test Messages (Cont)

Pos.slble source/
Messoges

Corrective Action

Keyboard. Test Error Message
SYSTE.~ ERROR: KEY PROCESSING

Replace systent mooule

Winchester (Hard Disk) Diagnostic Error Messages
The hard disk option is not co1mected.

The hard disk option is missing or i$ not seated
key for more irur.1r·
mation, then che.:k inside the system unit.

correctly. Press the

The hard diskcont:roller board i:lr the cables

may be loose. Check connections.

FAILURE: HARD DISK CONTROLLER:

Check for loose cables that connect

{followed by:)
DRIVE NOT SELECTED

from the drive to the controller board.

DRIVE NOT READY

FAlLURE: HARD DtSK CONT.ROLLER:
R/W ERROR IN HEAD SELECT REGISTER

The hard disk controller board is not
seated firmly on the syJ.~tem module.

FAILURE: HARD DISK CONTROLLER:
IMPROPER STATUS. COM.MA.l\fD COMPLETION

Small connector on hard disk drive
cable or 4~wire .::able is not
connected to disk drive,

111

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

Messoges
Winchester (Hard Disk) Diagnostic Error Message

FAILURE: HARD DISK CONTROLLER:
(followed by:)

A SEEK COMMAND DID NOT RESULT
THE CORRECT NUMBER OF STEP PULSES
CONTROLLER STEPPING TOO FAST
HEAD NOT POSITlONED OVER EXPECTED TRACK
NO INTERRUPT ON COMMAND COMPLETION
R!W ER,,~OR DETECTED IN REGISTER

R/W ERROR rN
3tIFF·ER

SEEK ATTEMPTED IN WRONG DIRECTION
STATUS
PROPERLY SET AFTER
ISSUING A COMMAND

TRKOO NOT CLEARED AFTER A SEEK

Reseat the hard disk ::ontroUer
board and run the hard disk
diagnostic again. ff error persists,
replace the hard disk controller
board.

Troubleshooting
fable A~2. Diagnostic Test Messages (Cont)
Possible source/
Correclive Action

Winchester <Hard Disk) Diagnostic Error Message

FAlLURE: HARD DISK CONTROLLER:

Reseat the hard disk controller

(followed by:)

board and run the hard
dlagnosHc again. U error persists,

UNABLE TO CLEAR ERROR FLAG
l'NABLE TO FORCE ABORT ERROR

replace the hard disk ctmtrr)ller
ward.

UNABLE TO FORCE LD. NOT FOUND
UNABLE TO RESET L.~DEX L>\ TCH
UNEXPECTED RD51 INTERRUPT

WRITE FAULT
FAILURE: DRIVE: DRIVE NOT READY

Cable to hard disk dri'Ve or c<.mtroiler board is
loose or not fu.Uy lteated. Check cable. The 4·
wire power cable to hard
is ;:or con··
ne<::~ed, Check cable.

113

TroubteshooUng
Tobie A~2. Diagnostic Tesi Messages (Cont)
Possible source/
Corrective Action

Messages

Winchester (Hard Disk) Diagnostic Error Message

FAil.URE: DRIVE:
(followed by:)

DRIVE ROTATIONAL SPEED TOO SLOW/FAST
HARD READ FAILURE, BAD SURFACE
SEEK COMPLETE NOT DETECTED AFTER

Replace hard disk drive with a kno\lr11

good drive and rerun the test. If
error persists, replace the drive
cable.

WRJTEFAULT
TRACK

NOT DETECTED AFTER

RESTORE OR SEEK TO TRACK O
TRACK 00 NOT FOUND

ABORTED COMMA~'!\fD
FAILCRE: CONTROLLER OR DRIVE?:
DATA ERROR BAD WRITE OR READ

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

FAILURE: CONTROLLER OR DRIVE?

the hard disk controller board
and make sure it is firmly seated in
its connectors. Ji error persists,
'""'"' '1""'"'"' the following components

(followe<l bf:)

CRC ERROR
address mark} NOT FOUND

HARD SCAN FAILURE

HARD WRrTE FAILURE

m rile following sequence:

•
•
•

Hard disk drive cable
Hard disk dnve
Hard disk controller board

Troubleshooting
Tobie A~2. Di.agnostic Test Messages (Cont)

Messages

Posslbie ·Source/
corrective Action

Winchester <Hard Disk:} Diagnostic Error Message

FAILURE: CONTROLLER OR DRI\•~E?:
{followed by:)
LD. NOT FOUND

SLOWtFAS1' STEPPING RATE
UNABLE TO SET INDEX LATCH
FAILURE: MEDIA: BAD SECTOR DETECTED
ON CYLINDER 0

Press the Help key and follow t."ie
instructions on the screen,
Re~initialize the hard disk using the
hard disk utility program. Rerun the
diagnostic. Ii failure persists,
replace the disk drive.

FAILURE: CONTROLLER 01~ DRIVE?:

~ress t~e Help key and follow "the
mstructmns on the scre;,en. Reptace

(followed by:)

DIAGNOSTIC CYLINDER HAS INCORRECT DATA

the parts in tJ1e

HARO READ FAlLURE

•
•
•

order:

Hard disk drive cable
Hard disk ddve
Hard disk contro!Ier board

Troubteshooting
Tobie A·2. Diagnostic Test Messages (Cont)
Possible Source/
Corrective Action

Messages

Extended Communications Otltion -· Internal Diagnostic Error Messages
FAILURE: COMM OPTION BOARD
(followed bv:J

COMn,f OPTION NOT INSTALLED

•

communications option board
(COMM option) has been installed.

MPSC DATA BUS WRITING ZEROS

D.MA TERMINAL

CHANNEL 0

Verify that the extended

•

COMM option by
removing and installing it.

•

Rerun Ext. Comm tesL

•

If error persists. replace
COMM option module.

•

Make ;;ure nothmg is <lttached
to COM1v1 connecr.ors. Remove

anything attached and rerun test.

Ext Comm A BUFFER COMP.:\R.E ERROR

Ext. Comm B BUFFER COMPARE ERROR

•

If errnr persists, reseat
COMM 1)ptif.>n by removing and
reinstalling it.

•

Renm test. If error

SYNC DETECT fat. Comm A
SYNC DETECT Ext Comm B

persists, replace COMM option.

Troubieshoo'fing
Tobie A-2. Oiognostic Test Messages (Cont}
Messoges

Possible Source/
Corrective Actlon

Extended Communications Option- External Diagnostic Error M~ages

BAUD RATE GENERATOR
• There is a hardware fault in

COM1\i1AND STATUS REGISTER READ

the COMM optkm. Reseat
option by removing and
reinstalling it.

COMMAL"iD STATUS REGISTER RESET
DMA DIAGNOSTIC INTERRUPT

•

Rerun test_

DMA REGISTER DATA TEST

•

lf error persists, replace COMM
option.

MPSC DATA BUS

FAILURE: COMM. OPTION BOARD:
(followed by:)

•

CARRIER SENSE

Check that 1oqpback plug is
attached oniy to EXT COMM

B connector.

CLOCK SUBSTITUTION

•

II not, attach plug and rer...i:n test.

COMM SIGNAL "DTR" TO "DSR"

•

!'.f error persists, r~aeat COMM option
and rerun test,

COMM SIGNAL "RTS" TO "CTS" & "BRLSD/CO"
COMM SIGNAL "SPSL" TO "RI"

• If error pet&ists, repfaee COMM option.

117

Troubleshooting
Tobie A~2. Diagnostic Test Messages (Cont)
Possible Source/
Corrective Action

Messages

Extended Communications Option - External Diagnostic Error 'Messages
FAILURE: COMM OPTJON BOARD:

•

Check that. loopback plug i::;
attached oniv tn EXT COfvIM
B connector:

•

If not, attach plug and rerun test

•

If error persists, reseat COMM option
;mrl rerun test.

•

lf error persists, replace COMM option.

(followed by:)

COMM SIGNAL "SRTS''

"SI"

COUNT DONE

DMA TERMINAL COUNT CHA.'l!JNEL O
D~!A TERMINAL COUNT CHANNEL 2

Ext. Comm A BUFFER COMPARE ERROR

Ext. Comm.B

COMPARE ERROR

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

Troubleshooting
Table A~2. Oiognostic Test Messages (Cont)

PossJbte Source/
Messages

Conective Action

Color/Graphics Option Err'°r Messages

FAILURE: GRAPHICS OPTION:
(followed by:)
GRAPHICS .BOARD NOT PRESENT

Option is not detected u1 the system.
•

Verify that coiorfgraphics board
has been installed..

•

Reseat color/graphics board
removing and mstitliing it.

•

Rerun test. If error
persists. re.place color/graphics
board and retu11 test-

• If error persists, the problem may
be in the "'y.stem module.

CHARACTER Bt'.F'FER

•

CLOCK TI1\fft~(;
CONTROLLER INVALID SYNCHRONlZATlON

•

CONTROLLER OR ADDRESSING

•

CONTROLLER OR DATA BUS

Reseat .:oior/graphics

board by removing
rernstalling it, re.running test.
If error persists, replace ·

color/graphics board.
Rerun test. If error pers1sts,
the problem may be in the
system module.

119

Troubleshooting
Table A-2. Dlognostle Test Messages (Cont)
Massages

Possible Source/
Corrective Action

Cc>lor/Graphics Option Error Messages

FAILURE: GRAPHICS OPTION:
(followed

CONTROLLER RETUR.i"!S INVALID STATUS

•

Reseat coiot/graµluts
board by removing it,
reinstalling it, rerunning test.

DA TA BUS OR MEMORY
ERRATIC INTERRUPT

• . If error persists. replace
color/graphics board.

FOREGROUND/BACKGROUND
REGISTER OR PLANE SELECT

•

GRAPHICS MASK

MEMORY DATA
MEMORY REFRESH

PATTERN REGISTER OR
PATTERN MlJLTIPLIER
PROGRAMMABLE LOGIC ARRAY
SCROLL MAP OR DATA BUS
TEXT MASK

1~ ....:...
""'ti
l,.;

Rerun test. U error persists,
problem may be in the
system module.

Rainbovv Corn·o
1

Table B~l 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· l; Rainbow Computer Ports List

Port

System module, PClOO·A*
System module, PClOO·B
R.XSO controller modttle
Hard disk controller board
64K byte memory board (PC100-A)t
192K byte memory board rpcrnO-A)t

128K byte memory board (PClOO·B)

O&gitof
Port Number
7fH9974~oo

70-19974-02
5•t-l5482

54·1601.9
PClX,~-AA

PC1XX-AB

PClX..X-AC
PClXX"AD

256K byte memory board {PC100-B)
64K byte memory component kn (9 chips)
256K hyte memory wrnponem kit (9 chips}

PC1X,'\-AY
PClX.\-AZ

Color/graphics option board

54··15688

•Part is for the Rainbow PCWO·A 1t1<::idei only
rThis memory board can be u.<>ed on either the Rainbow PCHm-A OR PClOO·B mod•:!s.

12i

Rainbow Computer Ports
Table B· L Rainbow Computer Parts List (Cont)
Digit al
Port Number

Port
Ext{~nded commun!cations option hoard

ROM 0 PCl 00-B
ROM 1 CLUSTER 1

54-15703
23·022E5-00
23-020£5·00

French, English) PClOO-B

ROM l CLUSTER 2
(Dutch, French, English) PClOO-B

23-015£5·00

1CLUSTER3
!Finnish, Swedish, English} PC'J. 00-B
ROM 1 CLUSTER 4
(Danish, Norwegian, English) PC100-B
ROM 1 CLUSTER 5
'-'•·"~"''.°""' Italian, English) PC100-B
Canadian (French) language ROM*
British (UK> languagi: ROM*

23·016ES·OO

· language ROM*
ltJ!Hm language RO!\P
Swiss (French) language ROM*
S\i..~is3 z-Ger;nanJ
R.CJM*
Belgian/French ianguage ROM*
Spanish language ROM"'
Dutch
ROM*
CS.A. ianguage RO:M*

Belgian/Flemish language ROM*

Damsh language ROM*
Finnish language ROM*

23-0 l 7E5-00

BG.R873A-BV
BG-RS76A-BV
BG-RS78A-BV
BG-R874A-SV
BG-R376A-BV
BG·R375A-BV
BG-R877 A-BV
BG-R377 A-BV
BG-R881A-BV

7(,..2027 4-15
BG-R378A-BV
BG·R875A-BV
BG·R872A··BV

Rainbow Computer Ports
Table a~ 1. Rainbow Computer Ports List (Cont)

Patt

Ol9Uol
Port Number

Norwegian. language ROM*

BG-R879A-BV

Swedish language ROM*

BG~R880A·BV

Power supply - PC10<k:\*
Power supply - PClOO-Bt
COMM connector loopback plug* - PClOO-A

H7842·A

EXT COMM B loopback plug/COMM connector -· PCIOO·B
PRINTER connector !oopback plug
RX.50 diskettes (pack of ten)

RX50 dual--disk.ette
Keyboard, American (English)
Keyboard, British <English;
Keyboard. Be!gian/F rend1

Keyboard, Be!gianlFlemish
Keyboard, Carmdian (French)
Keyboard, Danish
Keyboard, Finnish
Keyboard,

H784Z~D

12· 15336"01
12-15336-0·i
29-24631-00

RX50K-10
RX50-AA
LK201·A.<\
LK201-AE

LK201AP
LK201-AB
LK201-AC

LK201-AD
LK201-AG

Keyboard. Dutch

LK201"AH

Keyboard, Italian
Keyboard, Norv:egian
Keyboard. Spanish

LK20l·AS

Keyboard, Swedish
Keyboard, Swiss (French)

LK201-AM
LK20l-AK

*P~rt Js for the Rainbow PC100---A n~odt>,J Jnly.

rThis can be used on either the Ral!toow PC WO-A OR .i'C10D-f:I models.

123

Rainbow Computer Parts
Tobie B~ 1. Rainbow Computer Parts list (Cont)

Part

Digital
Part Numbet

Keyboard, Swiss (German}
Keyc-ap removal too!

LK201·AL

Video monitor assembly (white phosphori
Color monitor

VR20l·A

Cable, color monitor
Cable, hard disk drive
Cable, monitor, 1.8 m (6 fl)
Cable. power suppiy to system module, 10.1 cm (4 in)
Cable, RX50 shielded, 20.3 cm {8 in)
Cable, R.XSO shiekted, 36.8 cm (14.5 in)
Cable, COMM printer, 3 m n O

74-27314~01

VR241·A
BCC17
17-00427-01

17·00283-00
17-00318-02

17-00317-03
17~00317-04

.BCC04-10

Cable, modem

BCC15

Fan bracket assembly, PC100-A"'
Fan bracket assembly, PC100-B
Line
Australia

70-20816-01

Line
Line cord, Canada (French)
) .
,.,me
Denmark
f
.t...me
Fin.land
France
Line
,Line cord, Germany
~

Line cord, Holland
Line cord, Italy
Line cord, Japan

124

70-19572-00
' 17-00198·00
17 -00199-00

17-00083-09
1'7-00310-Q l
17-00199-00
17 ~0019~H)O
17 ·OOl 99-00
17·0019g...{)0
l 7-00199-00
17-0008::.H)9

Rainbow Computer Parts
Table &- l. Rainbow Com.puter Ports Ust (Cont)

Port

Oigltol
Port Number

Line cord, Norway

11~oo199--0o

Line cord, Spain

17 ~00199-00
11...00199--00
11-00:210-00

Line cord. Sweden
Une cord. Switzerland Wrench)
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, PC l 00
Rainbow 100 medallion"'
Rainbow script medallion
Video alignment template
P;admging container for RD51

17-00210..00
17-00209--00
17-00083·09
17·00294-00
74·28702-01
74·28702·02
l~H9857-~H
74-29164~01

74-27174-01
74-27250..03
74~27250..06

29--2·!37.1·00
':)9.-90045-01

125

Rainbow Computer Parts
How to Get Replacement Parts
Digital Equipment Corporation has a central service point m your area r.o help you
minimum of trouble.

your system running with a

you phone:

Determine the failing part.

Make a note of all error indJCations you were able to observe.

using the instmctions in this book.
'Write down the serial number of your Rainbow computer. The :serial number is on the

of the system unit.

CaH the Digiral Cu:stomer Help Line number listed below to determine the location of the Digital ServiCenter
nearest you.

Austria
Australia
Sydney
All other areas

(222)-57 76 41 extension 444

(02) ,j. 12-5555

iielgium
Canada
Denmark

(008) 226377
{02) 24 26 790
(800) 267-5251
{04) 30 10 05

France

(l) 687 31 52

fa nan

(1820) Jl .100
(02) 617 53 81 or617 53 82
(03) 989-716]

Spain

0) 725497
(l) 73 :34 307

42 ;33 :32

·N,'irw;:iy

c:
,;v,eaen
>

Switzerland
tTrnr.ed Kingdorn

2<~56422

{08) 98 88 35
101) 810 51 21
(0256) 59 200
t800J DEC-8000
(089) 95 91 66 44

Rainbow Computer Ports
Digital Services
Digital Equipment Corporation provides a wide range of maintenance and customer service~ for your Rainbow

computer.
On·Slte Service

Trained service ;specialists perform fast low-cost maintenance at your site. On-site service i;:i "'""r'·"'"""'''' under a
service agreement or per call.

There are 160 Digital ServiCenters '-VOrldw1de. nffering fast, dependable service. Carry-m Si:tvice is pro1rided tmder
a service agreement or per can. Call the appropriate service number from the list above for the location of the
ServiCenter nearest you.

OECmoller

If you have troubleshooting expertise, but need assistance for component repair, D.ECmailer

a low-cost
solution. It provides a repair service for modules and subassf~mblies with five-day turnaround at a Customer

Return Center.
Spore Ports
Digital Equipment Corporation's Customer Spares organization pwvides support in the following areas.

•
•

Maintenance test e:quipment
Do.::umemation

•

Emergency spare parts

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

A
Adding new diagnostk to diskette, 80, 101

Blank screen, 87
Brightness too low, 74

Cables. i24, 125

c:arry·m service, 127 "'~

theCK c::ornPUter ~est, 1 1 78, 99
Check diskette dnves,
, 99
Check voltage setting, 58
Circuit breaker, 83, 87

Color/graphics b<)ard replacement, 25
Color/graphics option diagnostic error messages, 119
Comm ioopl:mck plug, !04, 117, 123
Comm/printer external ioopback test, 100
Comm/printer/keyboard port test. mo

Communications option
messages, 116-118

removal and replacement,
test, 80, 101
Connecting the computer. 73

DECmailet, 127
Dia~ostic diskette
- re::>t messages, 102-·120
tests. 17, 99

"'€fS!CU
101
Diagonal tines •)n screen, 74
Disk wstem test, 100
Diskette dnvt>

AtB insrnlfauon. 42

C/D instailatmn, 44
labels. 84
removal, 34
Diskette system error messages, 105-108

129

Index
D1splay individual test menu, 77, 79, 99

Hard disk
controller b\>ard replacement, 24
diagnostic error messages, 111- l l 5
drive replacement, 48

E
messages {see also, Messages)
color/graphics option diagnostic, 119
·.vu,....-~.,,..,.·. diskette. 99
;:lvstem, 105-108
exten~ed ~qMM ?Ption di~gr~ostic. 116-118
hard dlSk Ula1<%DOStiC, 111-· l b
',Vinchester diagnostic. 111-· 115

communications option
error messages, 11 fi .. i18
replacement, 23

Help line number, 126

Individual test

Ins tail new
test, 80. 101
Installation
diskette drive A!B, 42
diskette drive CID, 44
fan and switch assembly, 7 J
drive, 48
new diagnostic on diskette, 80, 101
power suppiy. 58

Fan ;wd switch assembly
67
replacement. 71
Fan turmng too
88
Filler i:mneL 49
Floor stand

svstem unit in floor stand, 82
Winchester, 48
·

Kt•vboard
lnstallt:ttu:)n~ 5
options,_ 1;3
rernov:1t. 2
test.
100. lll

i11:~talfat1on, 82

removal nt systern nnit

H
parts, 1

120

L
location on PC100-A, ~!6
iocalion on PC100·B, 27
part numbers, 122, 123
replacement on PClOO·A, 28

repl<icemem on PClOO-B, 29

130

Index
Light display, 8Y, 96-98

Loopback plugs. 100, 101, lZ:J

Main board removal. .16
Main board replacement, 30

Main Diagnostic Menu, 77
M11in SysH!m .Menu, 76
Medallion, 84

Memorv (8088} test, 79, 9!~. 103
Memor-Y (8088/ZSO) test. 79, 99,
Memory (Z80) test,
100, 109

Memory board replacement, 22
Messages
1 • Mam Board, 88

2 ·Main Board, 88

3 - Drive A for B), 88
4 - Drive A for Bl, 89
5 · Drive A (or B), 89
t) - Drive A for 13), 88
7 - Drive A (or BJ, 89
8A (or BJ, 89

9 - Sv0tem Lm1d fneompiete. 90
O - Main Board, 90
11 - System Load lncomp!ere, 9U
1.

12 - Drive A (or B), 90

1:3 • Kevboard, 91
!4 - Main Board, 91
16 • interrupts Off, 92
17 • Main Board, 92
lS · Main Board, 92
19 - Main Board, 92
20 - Main Board. 92
21 - Drive Not Readv. 92
22 - Remove Card r;r Diskette. 9:3

23 - Non·Svstem
24 ·New ,r;1emorv Size,

93
93

25 - Set-Up Defaults St<;red. 94
26 · Main Board. 94
27 • Memorv Board, 94
28 - RX50 Controller BQard, 94
29 · Main Board, 94
30 · Main Board, 95

31 · Main Board, 9f:l

:3~J - Main Board, 95

·iU • Main &Jard. 95
50 - Main Board. 95
60 - Main Board. 95
Boot Load. 90 .
Drive A, index. 88
Drive A. motor, 39
Drive A, not ready, 90
Drive A. read, 88
Drive A, rest1xe, 89
Drive A, seek, 89
Drive A, step. 89

Drive nm
Interrupts Off,
Kevboard, 91

"'Iiin .Boa-rd~ cu1nnL porL 95
Main Board,. contention, 95

Main Ikiard, k1::ybQard ~'irt. 95
Mam B{;ard, nvm
91
Main &1ard. printer p1.J.ri, 95
.\-fain Board, ram 0 · 64K. 93
Main Board, ram arbitrathm, 94
Main Board, rom ere. rnm fl, 95
Main &)ard, rnm ere, rom 1. 95
Main Board, rom ere, rnrn 2, 95
Main Board, unsoiicited interrupt, 92
!I.fain Board, imsolidted interni?t.

'92

Index
Main Board, video, 88
Main Board, video ram,

Removal
color/graphics board,
cover, 17
diagonal lines from screen, 7 4
disketti~ drives, 34

Main Board, video. vfr, 90
Main Board, Z80 crc, 92
Main Board, Z80 response, 94
New Memory Size, 75, 93

ext.ended commnmcations board, 23

Non-Svstem Diskette, 93
Ram option, 94

Remove card or dlskette, 93
RX50 Controller Board, 94
Set-Up Defaults Stored, 94
'"°"'"''"~ Load, 90
Messages on diagnostic diskette, 102~120
Monitor installation, 10
Monitor removal, 8

On-site St~rvice, 127
Ordering replacement parts, 126

fan and switch assembly, 67
hard disk controller board.
hard disk drive cable, 39, 40
hard disk drive, 34, 38

language ROM, 26
memorv board, 22
power supply, 51

R,'(50 controller board, 21
svstem unit from floor stand. 12
Winchester, 34, :i8
RX50 controller board replacement, 21

S test, 75, 76

p
Part number:<L 121~125
Power .mpniv
instalhition. 58
51
\:oitage setting, 58
Primer corJidence te:'it, 79, 100
Printer connector loopback plug, 100, 123
vn' ..""'''"w card (for diskette drive), 1:3

Screen blank, 87

Screen with diagonal lines, 74
Spare parts, 121-127
System interaction test, 79, 100
Svstem module removal. 16
System module replacement, 30

T
Te:,;t computer, 76-79, 99

Test dnves A and B. 77. 7a, 99

Rainbow hard disk utility program, 101

132

Troubleshooting, 87 ·

Index

Using the diagnostic diskette. 77-80

Video alignment pattern, 79, 100
Video controiler test, 79, 99
Voltage setting, 58 ·

Winchester
controller replacement, 24
diagnostic error messages, 102-120
installation, 48

-0ptfon test, 80, 101
removal, 35, 38

Writ~rotect tab, 81

133

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RE.L\DER'S COMMENTS
Rainbow,,. User's Service Guide
This User's Service Guide is intended for customers
of Digital Equipment Corporation who do their cwm
maintenance, Your comments and suggestions wiil
help us in our continuing efforts to improve the
quality and usefulness of our documents.
How would you rate this Guide in the following
categories?
Very

Accuracy

Excellent Good Good Fair Poor
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What errors haved you found.? ~-----~·--~-..

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mamaama

111111
BUSINESS REPLY MAIL

DIGITAL EOIHPMHff CORPORATION
Educahonal ~.)arvices/Ouamy Assurance
12 Crosby Onv-d BUO/EOB
BedfOfd, MA 01 '130

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