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Document:	BA42 Storage Expansion Box Maintenance Guide
Order Number:	EK-BA42A-MG
Revision:	003
Pages:	79
Original Filename:

OCR Text

Iy,

EK-BA42A-MG-003

BA42 Storc;ige
Expansion Box
Maintenance Guide

digital equipment ¢ orp.oration
maynard, massach iselis

First printing, December 1980
Revigion, April 1091

The information in this Jrcument is subject to change without notice and should
not be construed as a commiument by Digital Equipment Corporation. Digital
Equipment Corporation assumes no responsibility for any errors that may appear
in this document.

The software described in this document is furnished under a license and may be
used or copicd ~nly in accordance with the terms of such license.
Digital Equipment Corporation assumes no responsibility for the use or reliability
of its software on equipment that is not supplied by Digital or its affiliated
companies.

USA.

This equipment generates, uses, and may emit radio frequency energy. The
equipment has been type tested and found to comply with the limits for » Class
A computing device pursuant to Subpart J of Part 15 of FCC Rules, which
are designed to provide reasonable protection against such radio frequency
interference. Operation of this equinment in a residential area may cause
interference in which case the user at his own expense will be required to take
whatever 1measures may be required to correct the interference.

The following are trademarks of Digital Equipment Corporation:

CompacTape

MicroVMS

VA Xcluster

DECnet
DECstation
DECsystem

ULTRIX
ULTRIX-32
UNIBUS

VMS
VT

DEC

DECUS

MicroVAX

PDP

VAX

VAXBI

VAXstation

CHZORED

MS-DOS is a registered trademark of Microsoft Corporation. SCO is a trademark
of Santa Cruz Operations. UNIX is a trademark of Unix System Laboratories,

Inc.

N
DONOCOEN
0

o
o
—t
—r

To Remove and Insert a Bezel into the BA42 Storage
Expansion Box Cover ..............................
To remove a blank panel from the front bezel ...
To insert a bezel into & BA42 storage expansion
boxcover ..........
.. ... .
i
To Remove and Install the Drive Mounting Brackets . ..
To remove and install an RZ mounting bracket . .
To remove and install a half-height mounting
bracket ........ ... ... ...

N —

o
P

ao—d

71 7]

—

To install the BA42 storage expansion box

WWwN

BA42 Storage Expansion Box Maintenance Guide.........
A Look at the BA42 Storage Expansion Box and Its
Drives . ... e
External BA42 Storage Expansion Box Connectors and
Switches ....... ...
i e
Inside the BA42 Storage Expansion Box..............
To Remove a Drive from a BA42 Storage Expansion Box . ..
To Install a Drive in a BA42 Storage Expansion Box ... ...
To Choose Drive Locations and Cable Connections ... ..
ToSettheDrive SCSIID ..........................
To Turn the BA42 Storage Expansion Box On and Off . .
To Remove and Install the BA42 Storage Expansion Box
Cover. ...
e
e e
To remove the BA42 storage expansion box

—

Contents

To Detach and Connect Interna! SCSI Signal and Power
Cables . ..ot

To connect internal SCSI signal and power

cables ....... ... . ...

To detach internal SCSI signal and power

cables ...... ... .. ...

Expansion Box Chassis ............................
To remove a drive from the BA42 storage
expansion box chassis........................
To mount a drive onto the BA42 storage
...
expansion box chassis.....................

To Mount and Remove Drives on the BA42 Storage

To Remove and Connect the External SCSI Cables on
the BA42 Storage Expansion Box....................
To remove an external SCSI cable or SCSI chain
terminator from the BA42 storage expansion

To install an external SCSI cable or SCSI chain
terminator on the BA42 storage expansion box . .
To Check the Drive after Installation ................
To Troubleshoot Drives in the BA42 Storage Expansion
BOXK ..o

Troubleshooting When the Drives Have No Power ... ..
Troubleshooting When a Drive Does Not Appear in the
... ... ....
......
...
Configuration Display . . . ......
Power Supply Hardware ..............................
To Remove and Install a Power Supply ...............
..
To remove a power supply .................
To install a power supply .....................
RZ55, RZ56, and RZ57 Hard Disk Drives . ... ............
To Install an RZ55, RZ56, or RZ57 Hard Disk Drive. ...
TZK10 QIC TapeDrive ...........c.ociiiiiiiiiinn..

To Install a TZK10 QIC Tape Drive . .................

i
TZ30 Tape Drive . ............coi
To Install a TZ30 Tape Drive . ......................
... .o
.....
... ...
RX23 Floppy Disk Drive .....
To Install an RX23 Floppy Disk Drive................

To Remove and Install an RX23 Drive Controller . ... ..
To remove an RX23 floppy disk drive from an

.
... ... il
.....
..
RX23 controller . .....
To install an RX23 floppy disk drive onto an
... ut..
......
RX23 controller . ..........
... ... ...
.......
...
RX33 Floppy Disk Drive .......
To Install an RX33 Floppy Disk Drive................

22
23

To Remove and Install an RX33 Drive Controiler ......
To remove an RX33 floppy disk drive from an
RX33controller ............ccovviiiieinn
...
To install an RX33 drive onto an RX33

controller ...........
..
i
RRD42 Compact Disc Drive.........................
...
To Install an RRD42 Compact Disc Drive .............

A Equipment Specifications
B Field Replaceable Units

Removing and installing the BA42 storage expansion box

W N -

BA42 storage expansion box connectors and switches.......
Internal BA42 storage expansion box hardware............

Figures

Drive and cable positions in a BA42 storage expansion
BOX. ...
i e
e
e

@~ O

(8]

COVRY ..\ vvitineneeneennneeneeernnaneananasnannenenns

Removing a BA42 storage expansion box cover blank
4 £V

Removing and installing an RZ mounting bracket..........

Removing and installing a half-height mounting bracket . . ..

Loosening and tightening mounting screws on a half-height

bracket .........c..

Removing and connecting internal SCSI signal and power

P
& )

PP
S
S
R
S

ONOCOEOWN

—

cableconnectors ..............
...
it

Removing and mounting a drive in the drive location closest
tothepower supply ........coitiiieinneinnenennnennn
Removing and mounting a drive in the drive location farthest
fromthepowersupply ............
...
i,

Removing and connecting external SCSI cables............

Power supply ......iiiiiii
i i i it i

Removing and installing a powersupply..................

RZ55, RZ56, and RZ57 hard disk drive hardware ..........

Removing a SCSI switchcover ..........................
TZKI0QIC tapedrive .............c.cciiiiiieinnaann.

SCSI ID jumpers on the TZK10 QIC tape drive............

TZ30 tapedrive...............coiiiiiiiiiii
i
RX23 floppy disk drive . ................
... ... ...

Removing and installing an RX23 drive controller .........
RX33 floppy disk drive hardware ........................
Removing and installing an RX33 drive controller .........
RRD42 compact discdrive...............covvenivenennn..
Mode select and SCSI ID jumpers on an RRD42 compact disc
Arive ..o
e e

23
24

PONDWN
—
]

Tables
RZ55, RZ56, and RZ57 SCSI ID Switch Settings . ..........
TZK10 SCSI ID Jumper Settings . .......................
TZ30 SCSI ID Switch Settings ..........................
RX23 SCSI ID Switch Settings . .........................
RX33 SCSI ID Switch Settings .. ........................

A5
A6

RRD42 SCSI ID Jumpser Settings. .......................
BA42 Storage Expansion Box Description.................
BA42 Storage Expansion Box Operating Conditions .. ......
BA42 Storage Expansion Box Nonoperating Conditions .. ...
RZ55 SCSI Hard Disk Drive Description ...............
..
RZ55 SCSI Hard Disk Drive Operating Conditions . ........
RZ55 SCSI Hard Disk Drive Nonoperating Conditions. ... ..

RZ56 SCSI Hard Disk Drive Description .................

RZ56 SCSI Hard Disk Drive Operating Conditions ... ......

A-10

RZ56 SCSI Hard Disk Drive Nonoperating Conditions . .. ...
RZ57 SCSI Hard Disk Drive Description .................

A-11

RZ57 SCSI Hard Disk Drive Operating Conditions . ........

A-12

RZ57 SCSI Hard Disk Drive Nonoperating Conditions ... . ...

A-13

TZ30 Tape Drive Description. . ..........................

A-14

TZ30 Tape Drive Operating Conditions . ..................

A-15

TZ30 Tape Drive Nonoperating Conditions ................

A-16

RX23 Floppy Disk Drive Descripuion . ....................

A-17

RX23 Floppy Disk Drive Operating Conditions ............

A-18

RX23 Floppy Disk Drive Nonoperating Conditior.s .........
RX33 Floppy Disk Drive Description .....................

A2
A3

A-19

A-20
A-21

RX33 Fleppy Disk Drive Operating Conditions ............

A-22

TZK10 QIC Tape Drive Description . .....................

RX33 Floppy Disk Drive Nonoperating Conditions .........

47
49
51

A-23

A-24

A-25
A-26
A-27
B-1

TZK10 QIC Tape Drive Operating Conditions .............
TZK10 QIC Tape Drive Nonoperating Conditions ..........
RRDA42 Compact Dise Drive Description . .................
RRD42 Compact Disc Drive Operating Conditions .........
RRD42 Compact Disc Drive Nonoperating Conditions ... ...
BA42 Storage Expansion 3ox Field Replaceable Units . . . . ..

A-14
A-15
A-16
A-16
A-16
B-1

vil

’ BAA42 Storage Expansion Box Maintenance Guide
This maintenance guide for the BA42 storage expansion box
and the drives the box supports describes

BA42 storage expansion box hardware

How to remove and install drives used in the BA42 storage
expansion box

The BA42 storage expansion box power supply

Hardware and specific installation requirements for these
drives:
RZ55, RZ56, and RZ57 hard disk drives
TZK10 1/4 inch cartridge (QIC) tape drive
TZ30 1/2 inch cartridge tape drive

RX23 3-1/Z inch floppy disk drive
RX33 5-1/4 inch floppy disk drive

RRD42 5-1/4 inch compact disc drive
Since the BA42 storage expansion box uses drive configuration
part numbers beginning with SZ12, the box is also often
referred to as the SZ12 storage expansion box.

A Look at ihe BA42 Storage Expansion Box cnd lis Drives
The BA42 storage expansion box houses one or two drives that
connect to form part of a SCSI bus.
Externci BA42 Storage Expansion Box Connectors and
Switches

Figure 1 shows the outside of the BA42 storage expansion box
and it3 connectors and switches.

=«

The power connector connects the BA42 storage expansion

The on/off switch turns the BA42 storage expansion box

The SCSI connectors link the drives inside the BA42
storage expansion box to a SCSI bus.

The SCS! ID switches set the SCSI IDs for any RZ55,
KZ56, or RZ57 drives inside the BA42 storage =xpansion
box. Other drives use SCSI ID switches or jumpers that are

box to an external power source.
power on and off.

on the individual drive.

The power supply LED glows green whenever the power

A bezel in the front of the BA42 storage expansion box
adapts the cover for the drive installed nearest the bezel.
- Drives with removable media require a bezel with
an opening that allows cartridges to be inserted and
removed. The bezel shown in Figure 1 is a bezel for a

supply is operating properly.

floppy disk drive.

Hard disk drives use a bezel that has no opening.

_Pperating LED

\ Floppy drive beze!
Front view

SCSIID
switches

scst
connectors

Power

On/oft
switch

connector

Back view
WSEBAMO1

Figure 1.

BA42 storage expansion box connectors and switches

inside the BA42 Storage Expansion Box
The BA42 storage expansion box contains a power supply; space
for two drives; and internal power, SCSI signal, and SCSI ID
cables. Figure 2 shows the inside of a BA42 storage expansion
box.

The internal SCSI signal cable connects drives inside the
BA42 storage expansion box to a SCSI bus. The SCSI
signal cable has one connector for each drive in the box.
Brackets with screws attach the ends of the SCSI signal
cable to the back of the box.

The internal power cable has two drive connecters and
connects to the 5-pin power supply cable. An inline load
resistor, which is part of the power supply cable, is located
under the power supply.

The SCSI ID cable connects RZ55, RZ56, and RZ57 drives
to the SCSI ID switches on the back of the BA42 storage
expansion box. Drives other than the RZ55, RZ56, and
RZ57 have SCSI ID switches or jumpers on the individual
drive and do not connect to the SCSI ID cable.
Power supply

SCSi signal cable

SCSI ID switch cable

Power cable
WSEBAI22

Figure 2.

Internal BA42 storage expansion box hardware

To Remove G Drive from a BA42 Storage Expansion Box
The following steps are the general procedure for removing
a drive from a BA42 storage expansion box. For a detailed
explanation of any of these steps, refer to the section later
in this guide that discusses the step about which you want
information.

Caution: Always follow ant.static procedures when handling drives
and other static-sensitive items.
|B

Turn off the expansion box.

Remove the box cover.

Remove the drive and mounting bracket from the expansion
kox chassis.
Disconnect the internal power and SCSI cables connected
to the drive. Also disconnect the SCSI ID cable if it is
attached to the drive.

Remove the mounting bracket from the drive.
Replace the expansion box cover.

To Install a Drive in o BA42 Storage Expansion Box
The following steps are the general procedure for installing
a drive in a BA42 storage expansion box. For a detailed
explanation of any of these steps, refer to the section later
in this guide that discusses the step about which you want
information.

Caution: Always follow antistatic procedures when handling drives

and other static-sensitive items.

Before you install the drive, determine where in the box the
drive belongs and which internal cable connectors to use for

a drive at that location.

~ 3.

Set the drive SCSI ID. Refer to the section later in this
guide that discusses the drive you are installing to find

Where the drive SCSI switches or jumpers are located

The SCSI ID settings for the drive you are installing

Turn off the expansior box.

Remove the expansion box cover.

5. If you are installing a removable media drive and the

expansion box cover has a solid front bezel, remove the
solid bezel and insert an open bezel.

Attach the mounting bracket that the drive requires. For
directions, refer to the section later in this booklet that
discusses the drive that you are installing.

Identify the SCSI and power connectors on the drive. To
find where the drive connectors are located, refer to the
section later in this booklet that discusses the drive you are
installing.

Connect the internal SCSI and power cables.

Mount the drive, in its bracket, at the location you selected.

10. Make sure that the internal power cable is connected to the
power supply.

11. Replace the expansion box cover.

12. Connect the external SCSI cables to the expansion box, if
the cables are disconnected.

13. Check whether the new drive appears in the configuration
display and operates properly.
To Choose Drive Locations and Cable Conneclions
Figure 3 is an overhead view of the BA42 storage expansion box
chassis.

Install RZ55, RZ56, or RZ57 drives in either drive location.

Install drives with removable media in the drive location
farthest from the power supply. If you install a drive that
uses reraovable media, make sure the expansion box cover
has an open bezel.
Connect the drive to the appropriate cable connectors for
the avive location in which you install the drive.

Pawer connector or
the drive nearest
the power supply

SCSI connector for
the drive nearest
the power supply

SCSi D
connector for
a hard disk

drive nearest
the power supply

Power supply
3

SCSI connector for

)

Power connector for
the drive farthest
from the power supply

the drive farthest
1

-4

from the power

\\\\
\\‘\ ‘\f

SCSI 1D connector

N\\‘\

for a hard disk

—ndrive farthest

from the power

suppiy
o

[}

;

T—

ooy

WSEBAM20

’

Figure 3.

Drive aid cable positions in a BA42 storage expansion box

To Set the Drive SCSI ID

Display the system configuration: to find a SCSI ID that ne
other SCSI device is using. For directions on how to display
the system configuration tabie, refer to the documentation
for the system you are using.

Use the switches or jurupers on the drive to set the
SCSI ID. For directions, refer to the section later in this
guide that discusses the drive for which you want to set the
SCSI ID.

To Turn the BA42 Storage Expansion Box On and Off

Use the on/off switch to turn the BA42 storage expansion box
on and off.

Press down the 1 on the on/off switch to turn on the

Press down the 0 on the on/off switch to turn off the

expansion box.

To Remove and Install the BA42 Storage Expansion Box Cover
Figure 4 shows how to remove and install the BA42 storage
expansion box cover.

BA42 expansion
box cover

BA42 expansion

box chassis

Captive screws

WSEBAM1S

Figure 4.

Removing and instaliing the BA42 storage sxpansion box
cover

To remove the BA42 storage axpansion box cover
1.

Loosen the two screws on the back of the system unit.

face the front of the expansion box and grip the sides of
the box with both hands.

Slide the cover toward you until the cover comes loose from
the guides. Use care not to catch or remove any spring
fingers.

To install the BA42 storage expansion box cover

Place the expansion box cover over the chassis. Leave at
least 2 inches between the cover and the back of the box.
2.

Slide the cover toward the back panel to engage the guides.
Use care not to catch or remove any spring fingers.
Tighten the two screws on the back of expansion box.

To Remove and Insert a Bezel info the BA42 Storage
Exponsion Box Cover
Figure 5 shows how to remove the blank panel from the BA42
storage expansion box cover.
BA42 expansion box

Use a small standard screwdrnver

to pry the panel loose. Then hff
the panel away from the box.

WSEBAM23

Figure 5.

Removing a BA42 storage expansion box cover blank pane!

To remove a blank ponel from the front bezel

Insert a small standard screwdriver under the edge of the

panel.
2.

Use the screwdriver to lift up the panel until it comes loose

Lift the panel away from the cover.

from the cover.

To insert @ bezel into a BA42 storage expansion box cover
1.

Hold the top of the new bezel against the top of the opening
in the front of the expansion box cover.

Pivot the bezel down until the posts inside the bezel enter

the holes in the expansion box cover.

Press the bottom of the bezel against the expansion box
cover until the posts inside the bezel snap into place.

To Remove and Install the Drive Mounting Brackets
Drives in the BA42 storage expansion box require an RZ
bracket or half-ieight bracket to mount the drive onto the
expansion box chassis. To find which mounting brackets a
specific drive requires, refer to the section later in this guide
that describes the drive you want to mount.
To remove and inglall an RZ mounting bracket

Figure 6 shows how to remove and install an RZ mounting
bracket.
To remove an RZ mounting bracket,

Remove the four Phillips-head screws that hold the drive in
the mounting bracket.

Hold the bracket in one hand and pull the drive up and out
of the bracket.

To install an RZ mounting bracket,
1.

Align the drive over the RZ mounting bracket. Make sure
that the captive screw on the bracket is on your right as

you face the back of the drive.

Slide the drive into the mounting bracket.

Insert the four Phillips-head screws that attach the bracket
to the drive.

Phillips-head

‘ stcrews 2)

W,
Captive
/ screw
Philiips-head

screws (2)

Back view
WSEBAMO4

Removing and instaliing an RZ mounting bracket

To remove and install o haif-height mounting oracket

Figure 7 shows how to remove and install a half-height
mounting bracket.
Figure 8 shows how to loosen and tighten the screws that hold
a drive to a half-height mounting bracket.
The half-height brackets for some drives contain the drive
controller. Refer to the section that discusses the drive you
are installing for a complete description of the brackets that a
specific drive requires.
To remove a half-height bracket from a drive,
1.

Loosen the four mounting screws that hold the drive to the
half-height mounting bracket.

With the front of the drive facing you, hold the half-height
bracket in one hand. Then slide the drive to the left until it
stops.

Lift the drive up and away from the bracket.

To install a half-height bracket ont¢ a drive,
1.

Loosely install the four standoffs and threaded mounting
screws into the bottom of the half-height drive.

Align the four mounting screw heads over the large opening
in the keyhole-shaped slots c¢n the top of the bracket.

Pass the four screw heads through the keyhole-shaped
slots. The standoffs should remain on top of the half-height

bracket.

With the front of the drive facing you, slide the drive to the
right until it stops.

Tighten the four threaded screws that hold the drive to the
half-height mounting bracket.

Drive

Mounting screws

ar:d standofis

mounting

bracket

Front view

SCSI connector pins

Mounting screws
and standoffs

Back view
WSEBAM13

Figure 7.

Removing and installing a half-height mounting bracket

Drive assembly

Standoffs (4)

Half-height /
mounting bracket

TOp view

Drive assembly

Medium Phillips-head
screwdrniver

Standofts (4)

& N7

Bottom view
WSEBAM14

Figure 8.

Loosening and fightening mounting screws on a half-height

bracket

Yo Detach and Connect internal SCSI Signal and Power
Cables
Figure 9 shows how to remove and connect internal SCSI signal
and power cables.

SCS! signal cable
connector

SCSl connector

onnector key

Power cord

Power connector

WSEBAM24

Figure 9.

Removing and connecting internal SCSI signal and power
cable connectors

’

To connect internal SCSI signal and power cables

Connect the following cables when you connect a drive:
e

Connect the internal SCSI signal and power cables to the

drive.

Connect the internal nower cable to the power supply cable.

If you are connecting an RZ55, RZ56, or RZ57 drive, connect
the SCSI ID cable.

To connect the internal power cable to the drive, zlign the
beveled sides of both power connectors. Then press the two
connectors all the way together.
To connect an internal SCSI signal cable, align the keyed
sides of the connectors. Then push the connectors all the way
together.
To detach internal SCSI signal and power cables

To detach internal power cables, pull the power connectors in
opposite directions.

To detach an internal SCSI signal cable connector, pull the
cable straight out of the connector on the drive.
If the SCSI signal cable connector is held by latches, first
push the connector latches in opposite directions away from
the connector. Then pull the connector up and away from the
system module.

To Mount and Remove Drives on the BA42 Storage Expansion
Box Chassls
Figures 10 and 11 show how to remove and mount drives in
both locations on the BA42 storage expansion box chassis.

Captive

WSEaAM12

Figure 10.

Removing and mounting o drive in the drive location closest
to the power supply

Captive screw

Drive mounted
on bracket

/" b
L

WSEBAM1
TM

Figure 11.

Removing and mounting a drive in the drive location farthest
from the power supply

To remove a drive from the BA42 storage expansion box chassis

Loosen the captive screw that holds the drive to the
expansion box chassis.

Tilt up the side of the drive that has the captive screw.
Pull up on the drive mounting bracket so that the bracket
tabs come out of the mounting rail on the expansion box
chassis.

Lift the drive away from the chassis.

Yo mount a drive ontfo the BA42 sforage expansion box chassis

Refer again to Figures 10 and 11 and do the following:
1.

Slide the tabs on the drive mounting bracket into the slots
on the mounting rails.

Tilt the drive down onto the expansion box chassis.

Tighten the captive screw that holds the drive to the
chassis.

To Remove and Connect the Fxternal SCSI Cables on the
BA42 Storage Expansion Box
Connect the external SCSI cables to link the drives to a SCS:
bus. You can install SCSI cakbles on either SCSI connector.
However, if the expansion box you are connecting is on the end
of a chain of drives, you must insert a SCSI-chain terminator
on the SCSI connector that has no cable connected to it.
Figure 12 shows how to remove and connect the external SCSI
cables on the BA42 storage expansion box.
Yo remove an external SCSI cable or SCSI chain terminator from the Bad2

storage expansion box

Push back the latches that hold the SCSI cable or
terminator to che connector.

Grip the cable connector and pull the external SCSI cable
or terminator off the SCSI connector on the back of the
expansion box.

Yo install an external SCSI cable or SCSI chain terminator on ihe BA42
storage expansion hox

Push back the latches on the sides of the SCSI connector on
the expansion box.

Align the cable connector or terminator with the SCSI
conn:ector on the expansion box.

Firmly press the cable connector onto the SCSI connector
on the expansion box.

Press the latches onto the SCSI connector or terminator
until the latches lock into place.

Wire brackets

Wire brackeis

Box-to-box

Terminator

cable connector

WSEEAI05

Figure 12.

Removing and conneciing extemal SCS! cuhln

To Check the Drive ofter instaliation
After you install a drive, make sure that the new drive operates
properly. To check the new drive,
i

Replace the expansion box cover.

Turn on the expansion box. Then turn on the system unit.

Check the power-up self-test results. Correct any problems
that the power-up self-test reports.
Display the system configuration table and check whether
the new drive appears in the configuration display. Refer
to the documentation for the system you are using for
directions on how to display the system configuration.
Make sure the number of drives listed equals the number
of drives on the SCSI bus. If the configuration display does
not show all the drives that are on the SCSI bus, do the
foilowing:
e

Make sure that the drive is connected properly.

Make sure that each drive has a different SCSI ID
and that no drive has the same SCSI ID as the SCSI
controller.

Run the read and write test for the specific drive you
installed. Correct any problems that the read and write
test reports. If the read and write test reports an error,
refer to the service guide for the drive you are testing for
troubleshooting directions.

7O Troubleshoot Drives in the BA42 Storage Expansion Box
Troubleshooting When the Drives Have No Power
If the drives have no power,
1.

Check the power supply LED. If the LED dces niot glow
green, make sure the power is on and the power cord is
connected to the back of the expansion box and to a power
outlet.

If the problem persists, remove the expansion box cover
and check the internal power supply cords. Make sure that
the internal power supply cord is connected to the internal
power cable.

If the problem persists, replace the power supply. Refer to
“To Remove and Install a Power Supply” later in this guide
for directions.
Troubleshooting When a Drive Does Not Appear in the
Configuration Display
If a drive does not appear in the configuration display,
|A

Make sure the power and SCSI cables are attached to the .
drive.

if the problem persists, make sure that all drives have
different SCSI IDs.

If the drive still does not appear in the configuration
display, refer to the service guide for the problem drive.

Power Supply Hardware

The power supply provides separate 5 volt and 12 volt DC

power input to each drive installed in the BA42 storage
expansion box. Figure 13 shows the BA42 storage expansion
box power supply.

Power connector
internal power

supply cord

Front view

Power cord

Back view
WSEBAM21

Figute 13. Power supply

To Remove and Install @ Power Supply
Figure 14 shows how to remove and install a power supply.
Capiive screws (2)

Screws (2)

BA42 chassis

WSEBAM22
Figure 14.

Removing and instailling o power supply

MOVe

T POWSE

Turn off the expansion box.
A

Remove the expansion box cover.

Disconnect the internal power supply cable.

Disconnect the expansion box power cord.

Loosen the two TORX screws on the side of the power
supply nearest the outside of the chassis.

Loosen the two captive screws that hold the power supply
to the expansion box chassis.
Raise the power supply end that is farthest from the power
supply on/off switch and then pull the power supply out of
the chassis.
Yo install o power supply

Slide the power supply toward the back of the expansion
box.
Slide the two TORX screws on the side of the power supply
into cheir slots in the expansion box chassis. Then tighten
the screws.

Tighten the two captive screws that hold the power supply
to the chassis.
Connect the power supply power cable to the internal power
cable.

Connect the power cord.

RZ55, RZ256, and RZ57 Hard Disk Drives
The BA42 storage expansion box supports three types of hard
disk drives:

The RZ55, which is a 332-Mbyte hard disk .rive

The RZ56, which is a 665-Mbyte hard disk drive

The RZ57, which is a 1.0-Gbyte hard disk drive

The RZ55, RZ56, and RZ57 hard disk drives look similar. A
label on the side of the drive states whether the drive is an
RZ55, RZ56, or RZ57 hard disk drive.
Figure 15 shows the drive housing, controls, and indicators for
an RZ55, RZ56, or RZ57 hard disk drive. Figure 15 also shows
the label that identifies the drive as an RZ55, RZ56, or RZ57
hard disk drive.

Drive 1D label

Mounting bracket
sc.rew holes

Drive SCSI ID
connector

Internal SCSI

cable connector

Mounting bracket
2o

screw holes

Orive SCSI
connector

Drive power
connector

Back view
WSEBAMO3

Figure 15.

RZSS5, RZ56, and RZ57 hard disk drive hardware

To install an RZ55, RZ56, or RZ57 Hard Disk Drive
Install RZ55, RZ56, and RZ57 drives in either drive
location.

Use an RZ mounting bracket to mount an RZ55, RZ56, or
RZ57 drive onto the expansion box chassis.
Insert a solid bezel in the expansion box cover if an RZ
drive is in the drive location farthest from the power
supply.

Use the SCSI switches on the back of the expansion box to
set the drive SCSI ID.
—

The switches on the right set the SCSI ID for the drive
nearest the power supply.

The switches on the left set the SCSI ID for the drive
farthest from the power supply.

Connect the SCSI ID cable to the RZ drive.
Table 1 lists the RZ drive switch settings for each SCSI ID.
Figure 16 shows how to remove the SCSI switch cover to
find the SCSI switches.
Table 1.

RZSS, RZ56, and RZ57 SCS! ID Switch Seftings

SCSI ID

Swiich 1

Switch 2

Switch 3

Down

Press the bottom of
cover. Then lift the
Lover away from the box.

SCSI switch cover

WSEBAM25

Figure 16.

Removing a SCS! swilch: cover

TZK10 @IC Tape Drive
The TZK10 QIC (quarter-inch cartridge) tape drive is a 320/525
Mbyte, 1/4-inch tape drive. Figure 17 shows the TZK10 QIC
tape drive hardware, connectors, and controls.

Drive SCSI
connector

SCSID

Drive power

Jjumpers

connector

Back view
WSEBAMO6

Figure 17.

TZK10 QIC tape drive

Yo Install a TZK10 IC Tape Drive
e

Install the TZK10 tape drive in the location farthest from
the power supply.

Use a half-height mounting bracket to mount a TZK10 tape
drive.

Use the SCSI ID jumpers to set the TZK10 drive SCSI ID.
The jumpers are located in the raiddle connector on the
back of the drive.

Counting from the left side of the connector, the location
of jumpers on the seventh, eighth, and ninth sets of pins
determines the SCSI ID number. The seventh set is reserved
for ID 2, the eighth set for ID 1, and the ninth set for ID 0.
The set of pins to the left of the SCSI ID pins is for disable
auto density select. This jumper should always be set to the in
positien.

The set of pins to the right of the SCSI ID pins is for
termination power. This jumper should always be set to the
in position.

Table 2 shows the SCSI ID jumper settings for the TZK10 tape
drive.
Figure 18 shows the SCSI ID jumpers set to SCSI ID
number 5.
Tabie 2.

TZK10 SCS! ID Jumper Settings

SCs! 1D

Out

Cut

Out

Oui

Out

Use these three sets of pins
to set the SCSI ID number
(jumpers shown here are
set to SCS! ID number
5, In Out In)

WSEBAI65

Figure 18.

SCSI ID jumpers on the TZK10 @IC tope drive

1230 Tape Drive

The TZ30 is a 95-Mbyte half-height tape drive. Figure 19 shows
the TZ30 tape drive hardware, controls, and indicators.

- J
Nhh o

e ——

TZ30 SCSi

connector

T230 power

switches
GSI I

/ connector

Back view
WSEBAMOS

Figure 19.

TZ30 fupe diive

To Install ¢ 7230 Tape Drive
s

Install the drive in the location farthest from the power
supply.

Use a half-height mounting bracket to mount the TZ30
drive onto the chassis as shown in Figure 7.

Connect the internal SCSI signal and power cables to the
connectors on the back of the TZ30 drive.

Use the SCSI ID switches to set the SCSI ID for the drive.

Figure 19 shows where to find the SCSI ID switches on t: =
TZ30 tape drive.

Table 3 lists the SCSI ID switch settings for the drive.
Table 3.

TZ30 SCS! ID Switch Seftings

§CSI ID

Switch 1

Switch 2

Switch 3

Switch 4

Dawn

Down

Dowr:

Down

Always set the leftmost switch on the TZ30 drive to the up
position. This setting enables the drive par ly.

RX23 Floppy Disk Drive

The RX23 is a 1.44-Mbyte 3-1/2 inch floppy disk drive with a
detachable drive that mounts on top of the RX23 controller.
Drive-to-controller signal and power cables connect the drive
and controller.

To assemble an RX23 floppy disk drive and controller, refer to
“To Remove and Install an RX23 Drive Controller” later in this
guide for directions.
Figure 20 shows the RX23 floppy disk drive hardware, controls,
and indicators.

RX23 drive

SCSI D switches

Eject button
RX23 controiler

Mounting screws (4)

Front view

RX23 drive

power connector

RX23 drive
RX23 drive-to-

controller cable

RX23 corrolier

RX23 power .

/Connecior

Movunting screws (I)/

internal SCSI cable

Back view
WSEBAMO9

Figure 20.

disk drive
RX23 floppy

To Instail an RX23 Fioppy Dick Drive

Install the drive in the location farthest from the power
supply.

Use a half-height mounting bracket to mount the drive and
controller assembly onto the chassis as shown in Figure 8.

Make sure that the drive-to-controller power and signal
cables are connected.

Use the SCSI ID switches to set the SCSI ID for the drive.

Figure 20 shows where to find the SCSI ID switches on the
RX23 floppy disk drive.

Table 4 lists the SCSI ID switch settings for the drive.
Table 4.

RX23 SCSI ID Switch Seitings

sCsi b

Switch 1

Switch 2

Swilch 3

Down

To Remove and Install an RX23 Drive Controller

Figure 21 shows how to remove and install an RX23 drive
controller.

RX23 drive

RX23 controller

Phillips-head
sGiaws (2)

Front view

RX23 drive

power connector

RX23 drive-to-

controller cable
RX23 controller

Phillips-head

screws (2)

]

Back view

RX23 power

connector

internal SCSI cable
WSEBAMZ6

Figure 21.

Removing and installing on RX23 drive controlier

To remove an RX23 floppy disk drive irom an RX23 confrolle:

Disconnect the drive-to-cortreller power cable from the
drive.
2.

Disconnect the drive-to-controller signal cable from the
drive.

Remove the four Phillips-head screws that hold the drive to
the controiler.

Pull the drive out of the bracket on the controller.

Yo install an RX23 floppy disk drive onto an RX23 controller

Align the drive over the bracket on the controller, with the
front of the drive and the front of the controller facing the
same direction.

Slide the drive into the bracket.
I

Connect the drive-to-controller power cable to the drive.

Inaert and tighten the four Phillips-head screws.

Connect the drive-to-controller signal cable to the drive.

RX33 Floppy Disk Drive
The RX33 is a 1.2-Mbyte 5-1/4 inch floppy disk drive with
a detachable controfler. The drive mounts directly onto the

controller, which is contained in a half-height bracket. Drive-tocontroller signal and power cables connect the RX33 floppy disk
drive drive and controller.
To connect an RX33 floppy disk drive and controller, refer to
“To Remove and Install an RX33 Drive Controller” later in this
guide for directions.
Figure 22 shows the RX33 floppy disk drive hardware, controls,
and indicators.

SCSI 1D switches

RX33 drive

Locking lever

RX33 controlier

Captive screw

Front view

/ RX33 drive

RX33 drive-tocontroller cable
RX33 power

/ connector

RX33 controiler

RX33 SCS1 Connect

SCSI cable

Back view
WSEBAM10

Figure 22.

RX33 flioppy disk drive hardware

Yo install an RX33 Floppy Disk Drive
e

Install the drive in the location farthest from the power
.
supply.

Make sure that the drive is mounted on its controller.

Mount the drive and controller assembly directly onto the
BA42 storage expansion box chassis. The controller housing
serves as a half-height mounting bracket.

Make sure that the drive-to-controller signal and power
cables are connected.

Use the SCSI ID switches on the controller to set the SCSI
ID for the drive.

Figure 22 shows where to find the SCSI ID switches on the
RX33 floppy disk drive.

Table 5 lists the SCSI ID switch settings for the drive.
Table 5.

RX33 SCSI ID Switch Seftings

SCsi ID

Swiich 1

Switch 2

Switch 3

Down

To Remove and install an RX33 Drive Controller
Figure 23 shows how to remove and install an R¥.33 drive
controlier.
RX33 drive

Front view

RX33 drive

RX33 drive-tocontroller cable

RX23 power
connector

RX33 controller

Back view
WSEBAM27

Figure 23.

Removing and installing an RX33 drive controlier

Yo remove an RX33 floppy disk drive from an BX33 confroller
L.

Disconnect the drive-to-controller power cable from the
drive.

Disconnect the drive-to-controller signal cable from the
drive.
Loosen the four mounting screws that hold the drive to the
controller.

With the front of the drive facing you, hold the controller in
one hand. Then siide the drive to your left until it stops.

Lift the drive up and away from the controller.

To install an RX33 drive onfo an RX33 coniroller
|B

Loosely install the four washers and threaded mounting
screws into the bottom of the drive.
Align the drive over the controller, with the front of the
drive and the front of the controller facing the same
direction.
Align the four mounting screw heads over the large opening
in the keyhole-shaped slots on the top of the controller.

Pass the four screw heads through the keyhole-shaped
slots. The standoffs should remain on top of the half-height
bracket.
With the front of the drive facing you, slide the drive to
your right until it stops.
Tighten the four threaded screws that hold the drive to the
controller.

Connect the drive-to-controller power cable to the drive.
Connect the drive-to-controller signal cable to the drive.

RRD42 Compact Disc Drive
The RRD42 compact disc drive is a halt-height, 5-1/4 inch,

600-megabyte compact disc drive. Figure 24 shows the RRD42
compact disc drive hardware, connectors, and controls.

Headphone jack

Headphone
level control

Front view

Power
connector

SCSI signal
conmector

SCSI iD
jumpers

Back view
WSEBAI78

Figure 24.

RRD42 compact disc drive

Yo install an RRD4Z2 Compaoct Diec Drive
e

Install the RRD42 compact disc drive in the location
farthest from the power supply.

Use a half-height mounting bracket to mount an RRD42
compact disc drive.

Use the SCSI ID jumpers to set the RRD42 drive SCSI ID.
The jumpers are located on the back of the drive.

The jumper on the mode select set of pins determines the mode
of operation for the drive. If your operating system is VMS or
ULTRIX, the jumper should be in. If your operating system is
MS-DOS or SCO UNIX, the jumper should be cut. The drive is
shipped with the mode jumper in.

The next three sets of pins are used to determine the SCSI ID
number for the drive.
Table 6 shows the SCSI ID jumper settings for the drive.
Figure 25 shows the mode select jumper in and the SCSI ID
jumpers set to SCSI ID number 4.
Table 6.

RRD42 SCSI ID Jumper Seftings

SCSi D

iDo

iD2

Out

Cut

Gut

Out

SCS! ID jumpers set to
ID rnumber 4 (Out Out In)

Mode select jumper

’)_

; Sy

—
3

|
:

WSEBAIGE

Figure 25.

Mode seiect and SCSI ID jumpers on an RRD42 compact

disc drive

"'"’l‘v’r‘d\

l"-"'!""“'

.2 0. 4

0.0

-4

Equipment Specifications

This appendix lists the physical specifications, operating
conditions, and nonoperating conditions for the following
components:

BA 12 expansion box

RZ55 hard disk drive

RZ56 hard disk drive

RZ57 hard disk drive

TZ30 tape drive

RX23 floppy disk drive

RX33 floppy disk drive

TZK10 QIC tape drive

RRD42 compact disc drive

Equipment Specifications

A-1

Table A-1.

BAA42 Storage Expansion Box Description

Weight

17.24 kg (38.00 lb) maximum

Height

10.16 cm (4.00 in)

Width

43.02 cm (18.12 in)

Depth

40,64 cm (16.00 in)

Input voltage

Automatically adjusting ac input
120-240 Vac

Frequency range

47 t0 63 Hz

Power

90 watts maximum

Tabie A-2.

BAA42 Storage Expansion Box Operating Conditions

Temperature range!

10°C to 40°C (50°F to 104°F)

Temperature change rate

11°C (20°F) per hour maximum

Relative humidity

20% to 80% noncondensing

Maximum wet-bulb temperature

28°C (82°F)

Minimum dew-point temperatura

2°C (36°F)

Altitude

2400 m (8000 ft) maximum

1Reduce maximum temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 ft) increase in .

altitude.

Table A-3.

BAA42 Storage Expansion Box Nonoperating Conditions

Temperature range

5°C to 50°C

Relative humidity

10% to 95% noncondensing

Maximum wet-bulb temperature

46°C (115°F) packaged

Altitude

4900 m (15,000 ft) maximum

A-2

Equipment Specifications

(41°F to 122°F)

Table A-4.

RZ55 SCSI Heret Disk Diive Descriphion

Internal drive

-~ Weight

3.81 kg (8.40 Ib)

— Height

8.26 cm (3.25 in)

- Width

14.61 cm (5.75 in)

- Depth

20.83 cm (8.20 in)

Capacity

- Bytes per drive

332.3 MB

— Blocks per drive

649,040

~ Block size

512 bytes

Data transfer rate

— Bus asynchronous mode

1.5 MB per second

— Bus synchronous mode

4 MB per second

- To and from media

1.25 MB per second

Seek time

4 ms track-to-track

Average latency

8.3 ms

Interface

SCSI

16 ms average
35 ms maximum

Equipment Specifications A-3

Table A-5.

RZSS SCSI Hard Disk Drive Operating Conditions

Temperature range!

10°C to 55°C (50°F to 131°F)

Temperature change rate

11°C (20°F) per hour, maximum

Relative humidity

20% to 80% noncondensing

Maximum wet-bulb temperature

25.6°C (78°F)

Minimum dew-point temperature

2°C (36°F)

Altitude

~-300 to 4600 m ( - 1000 ft to 15,000 &)

1Reduce maximum temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 ft) increase in

altitude.

Table A-6.

RZS55 SCSI Hard Disk Drive Nonoperating Conditions

Temperature range

—-40°C to 66°C ( -40°F to 151°F)

Temperature change rate

20°C (36°F) per hour, maximum

Relative humidity

20% to 95% packaged

Maximum wet-bulb temperature

46°C (115°F) packaged

Altitude

-300 to 12,200 m « - 1000 ft to 40,000 ft)

- A~4

Equipment Specificaiions

Table A-7. RZ56 SCSI Hard Disk Drive Description
Internal drive
-Weight

3.81 kg (8.40 Ib)

—Height

8.26 cm (3.25 in)

~Width

14.61 cm (5.75 in)

-Depth

20.32 cm (8.00 in)

Capacity

-~ Bytes per drive

655.17 MB

— Blocks per drive

1,299,174

— Block size

512 bytes

Data transfer rate

— Bus asynchronous mode

1.6 MB per second

~ Bus synchronous mode

4.0 MB per second

- To and from media

1.875 MB per second

Seek time

4 ms track-to-track
16 ms average
35 ms maximum

Average latency

8.3 ms

Interface

SCSI

Table A-8.

RZ56 SCS! Hard Disk Drive Opercling Conditions

Temperature range!

10°C to 55°C (50°F to 131°F)

Temperature change rate

11°C (20°F) per hour, maximum

Relative humidity

8% to 80% noncondensing

Maximum wet-bulb temperature

25.6°C (78°F)

Minimum dew-point temperature

2°C (36°F)

Altitude

-300 to 4600 m ( —1000 to 15,000 ft)

1Reduce maximum temperature by 1.8°C for each 1.000 meter (1.0°F for each 1,000 ft) increase ii

altitude.

Equipment Specifications A-G

Table A-9.

/256 SCSI Hard Disk Drive Nonoperating
Conditions

Temperature range

—-40°C to 66°C ( —-40°F to 151°F)

Temperature change rate

20°C (36°F) per hour, maximum

Relative humidity

8% to 95% packaged

Maximum wet-bulb temperature

46°C (115°F) packaged

Altitude

-300 to 12,200 m ( - 1000 to 40,000 ft)

fabie A-10.

RZ57 SCS! Hord Disk Drive Description

Internal drive
- Weight

3.81 kg (8.40 Ib)

- Height

8.26 cm (3.25 in)

- Width

14.61 cm (5.75 in)

- Depth

20.32 cm (8.00 in)

Capacity

—~ Bytes per drive

1.0 gigabytes

— Blocks per drive

1,954,050

— Block size

512 bytes

Data transfer rate
~ Bus asynchronous mode

1.6 MB per second

~ Bus synchronous mode

4.0 MB per second

- To and from media

2.5 MB per second

Seek time

4 ms irack-to-track
14.5 ms average

33 ms maximum

Average latency

8.3 ms

Interface

SCSI

Table A-11.

RZ57 SCSI Hard Disk Drive Operating Conditions

Temperature range!

10°C to 55°C (50°F to 131°F)

Temperature change rate

11°C (20°F) per hour, maximum

Relative humidity

8% to 80%, noncondensing

Maximum wet-bulb temperature

26°C (78°F)

Minimum dew-point temperature

2°C (36°F)

Altitude

—~300 to 4600 m ( -1000 to 15,000 ft)

1Reduce maximum temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 f) increase ir

altitude.

Equipmeni Soecifications

A-7

Table A-12.

RZS7 SCSI Hard Disk Drive Nonoperating Conditions

Temperature range

—40°C to 66°C ( —40°F to 151°F)

Temperature change rate

20°C (36°F) per hour, maximum

Relative humidity

8% to 95%, packaged

Maximum wet-bulb temperature

46°C (115°F), packaged

Altitude

-300 to 12,200 m { —1000 to 40,000 ft)

A-§

Equipment Soacificotions

Toble A-13.

TZ30 Tope Drive Description

Internal drive

- Weight

1.50 kg (3.31 1b)

— Height

4.14 cm (1.63 in)

- Width

14.48 cm (5.70 in)

— Depth

21.59 cm (8.50 in)

Bit density

2624 bits per cm (6667 bits per in)

Cartridge capacity

95 Mbytes, formatted (approximate)

Media

12.77 mm (0.5 in) unformatted magnetic tape

Mode of operation

Streaming

Number of tracks

Tape speed

190 cm per second (75 in per second)

Track format

Multiple track serpentine recording

Data transfer rate

62.5 Kbytes per second

Table A-14.

1230 Tape Diive Operating Conditions

Temperature range!

10°C to 40°C (50°F to 104°F)

Temperature change rate

11°C (20°F) per hour, maximum

Relative humidity

20% vo 80% noncondensing

Maximum wet-buib temperature

25°C (77°F)

Minimum dew-point temperature

2-C (36°F)

Altitude

2400 m (2000 ft) maximum

1Reduce maximum temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 (L inci zase ba

altitude.

Taksie A-15.

TZ30 Tape Drive Nonoperating Conditions

Temperature range

—40°C to 66°C ( —40°F to 151°F)

Tem.perature change rate

20°C (36°F) per hour, maximum

Relative humidity

10% to 95%

Maximum wet-bulb temperature

2°C (36°F)

Altitude

9100 m (30,000 ft) maximum

Eauipment Specifications

A<D

Toble A-16.

RX23 Floppy Disk Drive Description

Internal drive
~ Weight

0.48 kg (1.06 Ib)

- Height

3.00 cm (1.18 in)

-~ Width

10.18 cm (4.00 in)

- Depth

15.01 ¢m (5.91 in)

Number of tracks

Number of heads

Step rate

3 ms per track

Diskette size

8.9 cmn (3.5 in)

Recording surfaces per diskette

Sectors per track

9 double density
18 high density

Capacity
- Bytes per drive

737 KB double density
1,474 KB high density

— Blocks per Crive

1,440 double density
2,880 high density

— Block size

512 bytes

Data transfer rate
— To and from media

250 Kbits per second double density
500 Kbits per second high density

Operating power

3.0 watts

Standby power

0.3 watts

- A~10 Equipment Specifications

Table A-17.

RX23 Floppy Disk Drive Operating Conditions

Temperature range!

5°C to 50°C (40°F to 122°F)

Temperature change rate

11°C (20°F) per hour, maximum

Relative humidity

8% to 80%, noncondensing

Maximum wet-bulb temperature

29°C (80°F)

Minimum dew-point temperature

2°C (36°F,

Altitude

—300 to 3060 m ( —1,000 ft to 10,000 ft)

1Reduce maximum temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 ft) increase in

altitude.

Table A-18.

RX23 Floppy Disk Drive Nonoperating Conditions

Temperature

~40°C to 66°C ( —40°F to 151°F)

Temperature change rate

20°C (36°F) per hour, maximum

Relative humidity

5% to 95%, packaged

Maximum wet-bulb temperature

46°C (115°F), packaged

Altitude

-300 to 12,300 m ( —-1,000 ft to 40,07 ft)

Equipment Specifications

A-11

Table A-19.

RX33 Floppy Disk Drive Description

Internal drive

— Weight

1.10 kg (2.43 1b)

- Height

4.32 cm (1.70 in)

- Width

14.61 c¢m (5.75 in)

~ Depth

20.32 cm (8.00 in)

Number of tracks

Nu: Der of heads

Track density

96 tracks per inch

Step rate

3 ms per track

Diskette size

13.13 cm (5.25 in)

Recording surfaces per diskette

Sectors per track

10 normal density
15 high densi'y

Capacity
~ Bytes per drive

409 KB normal density

1200 KB high density

— Blocks per drive

800 normal density

2400 high density
-~ Block size

512 bytes

Data transfer rate
- To and from media

250 Kbits per second normal density

500 Kbits per second high density
Operating power

4.1 watts

Standby power

1.5 watts

A-12

Equipment Specifications

Table A-20.

RX33 Floppy Disk Drive Operating Conditions

Temperature range!

10°C to 46°C (50°F to 115°F)

Temperature change rate

11°C (20°F) per hour, maximum

Relative humidity

20% to 80% noncondensing

Maximum wet-bulb temperature

45°C (113°F)

Minimum dew-point temperature

2°C (36°F)

Altitude

2400 m (8000 ft) maximum

1Reduce maximum temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 ft) increase in

altitude.

Table A-21.

RX33 Floppy Disk Drive Nonoperating Conditions

Temperature

—34°C to 60°C ( —30°F) to 140°F)

Temperature change rate

20°C (36°F) per hour, maximum

Relative humidity

5% to 90~

Maximum wet-bulb temperature

45°C (113°F) packaged

Altitude

9100 m (30,000 ft) maximum

Equipment Specifications

A-13

Table A-22.

TZK10 @IC Tape Drive Description

Internal drive

- Weight

1.09 kg (2.40 1b)

~ Height

4.39 cm (1,73 in)

- Width

14.61 em (5.75 in)

- Depth

20.83 cm (8.20 in)

Cartridge capacity

320 MB (approximate) with DC6320
525 MB (approximate) with DC6525

Data density

16,000 bits per in

Drive interface

SCSI-2

Media

DC6320, DC6525, or Digital-approved

equivalent

Mode of operation

Streaming

Number of tracks

Power consumption, normal

20 watts

Power consumption, peak

33 watts

Transfer rate

200 KB per second at average streaming mode
1.5 MB per second at SCSI maximum

Tape speed

305 ¢cm (120 in) per second

Track format

Multiple track serpentine recording

“able A-23.

TZK10 QIC Tape Drive Operating Conditicins

Tempers ture range!

5°C to 40°C (50°F to 104°F)

Tempera.ure change rate

11°C (20°F) per hour, maximum

Relative humidity

2% to 80% noncondensing

Maximum wet-bulb temperature

28°C (82°F)

Minimum dew-point temperature

2°C (36°F)

Altitude

3900 m (13,000 ft) maximum

'Reduce maximum temperature by 1.8°C for each 1,000 me: er (1.0°F for each 1,000 ft) increase in

altitude.

A~14 Eominment Snacificotions

Table A-24.

TZK10 &iC Tape Drive Nonoperating Conditions

Temperature range

-30°C to 60°( —22°F to 151°F)

Temperature change rate

20°C (36°F) per hour, maximum

Relative humidity

10% to 95%

Maximum wet-bulb temperature

46°C (115°F)

Altitude

12,200 m {40,000 ft) maximum

Equipment Specifications

A-15

Table A-25.

RRD42 Compact Disc Drive Description

Internal drive
- Weight

1.3 kg (2.8 1b)

- Height

4.15 cm (1.63 in)

- Width

14.6G cm (5.75 in)

— Depth

20.81 ¢cm (8.2 in)

Capacity

600 MB

Seek time

450 ms average (iypic "

Burst transfer rate

1.5 MB per second

Sustained transfer rate

150 KB per second

Heat dissipation

14 watts (typical)

Initialization startup time

2.0 seconds maximum

700 ms maximum (tv al)

Interface
Table A-26.

- SCsI
RRD42 Compact Disc Drive Operating Conditions

Temperature range!

5°C to 50°C (41°F to 122°F)

Relative humidity

10% to 90% noncondensing

Maxim»m wet-bulb temperature

28°C (82°F)

Minimum dew-point temperature

2°C (36°F)

Altitude

-300 to 4600 m ( —1000 to 15,000 ft)

Ineduce maximnm temperature by 1.8°C for each 1,000 meter (1.0°F for each 1,000 ft) increase in

altitude.

Table A-27.

RRD42 Cornpact Disc Drive Nonoperating Conditions

Temperature range

—-30 °C to 55°C ( —22°F to 131°F)

Relative humidity

10to 90% packaged, noncondensing

Maximum wet-bulb temperature

46°C (115°F) packaged, noncondensing

Altitude

-300 to 12,200 m ( —1000 to 40,000 ft)

A-16 Equipment Specifications

Field Replaceable Units

Table B-1.

BAA42 Storage Expansion Box Field Replaceable Units

FRU

Part Number

SCSI/FDI adapter module

54-19288-01

Power supply

H7821-00

Power supply cable with load resistor

17-02447-01

Power cord (USA)

17-00606-10

68 - 50 externai SCSI cable

17-02443-01

50 - 50 external SCSI cable

17-02446-01

SCSI ID select switch module

54-19325-02

SCSI ID select cable

17-02445-01

Internal SCSI data cable

17-02444-01

Full-height drive mounting bracket

74-39202-01

Half-height drive mounting bracket

74-41843-01

RZ55 hard disk drive

70-26717-01

RZ55 PCB

29-27347-01

RZ56 HDA

29-27890-01

RZ56 PCB

29-27889-01

RZ57 HDA

70-28158-01

RZ57 PCB

29-28159-01

TZ30 1/2 inch cartridge tape drive

TZ30-AX
(continued on next page)

Field Replaceable Units

B-1

Table B-1 (Coni.).

BA42 Storage Expansion Box Fleld Repiaceabie Units

FRU

Port Number

TZK10 quarter inch cassette (QIC) tape

TZK10-AA

RX23 3-1/2 inch floppy disk drive
RX33 5-1/4 inch floppy disk drive

RX23-AA

SCSVFDI module

54-19288-01

RRD42 5-1/4 inch compact disc drive

RRD42-AA

drive

B-2

Field Replaceable Units

RX33-A