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Document:	MicroVAX 3100 Models 30/40/80 Supplement
Order Number:	XX-EAAEE-6A
Revision:
Pages:	44
Original Filename:	https://manx-docs.org/collections/antonio/dec/MDS-2000-01/cd1/VAX/M3148SIA.PDF

OCR Text

MicroVAX 3100 Models 30/40/80
Supplement
Order Number: EK–M3148–SI. A01

March 1995
This manual contains supplemental information to be used in conjunction
with existing customer documentation for MicroVAX 3100 Model 30, 40, and
80 systems, and is not intended to be used as a stand-alone document.

Digital Equipment Corporation
Maynard, Massachusetts

March, 1995
Digital Equipment Corporation makes no representations that the use of its products in the
manner described in this publication will not infringe on existing or future patent rights, nor do
the descriptions contained in this publication imply the granting of licenses to make, use, or sell
equipment or software in accordance with the description.
Possession, use, or copying of the software described in this publication is authorized only
pursuant to a valid written license from Digital or an authorized sublicensor.
© Digital Equipment Corporation 1995.
The postpaid Reader’s Comments form at the end of this document requests your critical
evaluation to assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation: CompacTape, DEC, Digital,
MicroVAX, VAX, VAX DOCUMENT, and the Digital logo.
All other trademarks and registered trademarks are the property of their respective holders.
FCC NOTICE: The equipment described in this document generates, uses, and may emit radio
frequency energy. The equipment has been type tested and found to comply with the limits for
a Class A computing device pursuant to Part 15 of FCC Rules, which are designed to provide
reasonable protection against such radio frequency interference when operated in a commercial
environment. Operation of this equipment in a residential area may cause interference, in which
case the user at his own expense may be required to take measures to correct the interference.
S2836

This document was prepared using VAX DOCUMENT Version 2.1.

Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vii

1 MicroVAX 3100 Platform Options
1.1
1.2

How to Use this Supplement . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mass Storage Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1
1–1

2 FRU Removal and Replacement
2.1
2.1.1
2.1.2

Enclosure Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location of Field Replacable Units (FRUs) . . . . . . . . . . . . . .
Removing the Enclosure Cover . . . . . . . . . . . . . . . . . . . . . . .

2–1
2–1
2–2

3 Removing and Replacing FRUs
3.1
3.1.1
3.1.2
3.1.3
3.2
3.2.1
3.2.2
3.2.3
3.3
3.3.1
3.3.2
3.3.3
3.4
3.4.1
3.4.2
3.4.3
3.5
3.5.1

Removing and Replacing an RRD42 CD–ROM . . . . . . . . . . . . . . .
Setting the SCSI ID Information . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Mounting Bracket . . . . . . . . . .
Installing the Replacement Drive . . . . . . . . . . . . . . . . . . . . . .
Removing and replacing an RRD43 CD–ROM . . . . . . . . . . . . . . .
Setting the SCSI ID Information . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the RRD43 Mounting Bracket . . . .
Installing the Replacement Drive . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing an RZ24L Disk Drive . . . . . . . . . . . . . .
Setting the SCSI ID Information . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Mounting Bracket . . . . . . . . . .
Installing the Replacemnet Drive . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing an RZ25L Disk Drive . . . . . . . . . . . . . .
Setting the SCSI ID Information . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Mounting Bracket . . . . . . . . . .
Installing the Replacement Drive . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing an RZ25M Disk Drive . . . . . . . . . . . . .
Setting the SCSI ID Information . . . . . . . . . . . . . . . . . . . . . .

3–1
3–2
3–3
3–4
3–5
3–6
3–6
3–7
3–9
3–10
3–10
3–10
3–12
3–14
3–14
3–14
3–16
3–17

iii

3.5.2
3.5.3
3.6
3.6.1
3.6.2
3.6.3
3.7
3.7.1
3.7.2
3.7.3
3.8
3.8.1
3.8.2
3.8.3

Removing and Replacing the Mounting Bracket . . . . . . . . . .
Installing the Replacement Drive . . . . . . . . . . . . . . . . . . . . . .
Removing an RZ26, RZ26L, or RZ28 Disk Drive . . . . . . . . . . . . .
Setting the SCSI ID Information . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Mounting Bracket . . . . . . . . . .
Installing the Replacement Drive . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing a TLZ06 or TLZ07 Tape Drive . . . . . . .
Setting the SCSI ID Information . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Mounting Bracket . . . . . . . . . .
Installing the Replacement Drive . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing a TZK10 or TZK11 Tape Drive . . . . . . .
Setting the SCSI ID Information . . . . . . . . . . . . . . . . . . . . . .
Removing and Replacing the Mounting Bracket . . . . . . . . . .
Installing the Replacement Drive . . . . . . . . . . . . . . . . . . . . . .

3–17
3–17
3–19
3–19
3–20
3–21
3–23
3–25
3–25
3–25
3–27
3–27
3–28
3–29

RRD42 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RRD42 SCSI ID Jumper Locations and Mounting
Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the RRD42 CD–ROM Drive . . . . . . . . . . . . . . . . . .
RRD43 CD–ROM Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RRD43 CD–ROM Drive Mounting Bracket and SCSI ID
Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the RRD43 CD–ROM Drive . . . . . . . . . . . . . . . . . .
RZ24L Disk Drive Connectors, SCSI ID Jumpers, and
Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing an RZ24L Disk Drive . . . . . . . . . . . . . . . . . . . . . .
RZ25L Disk Drive Connectors, SCSI ID Jumpers, and
Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing an RZ25L-EK Disk Drive . . . . . . . . . . . . . . . . . . .
RZ25M Disk Drive Connectors, SCSI ID Jumpers, and
Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing an RZ25M Disk Drive . . . . . . . . . . . . . . . . . . . . . .
Disconnecting the Cables from a Sample RZ26, RZ26L, or
RZ28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sample RZ26, RZ26L, RZ28 Disk Drive SCSI ID Jumper
Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sample RZ26, RZ26L, RZ28 Disk Drive Mounting Bracket
(Bottom View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–2

Figures
3–1
3–2
3–3
3–4
3–5
3–6
3–7
3–8
3–9
3–10
3–11
3–12
3–13
3–14
3–15

3–3
3–4
3–5
3–6
3–8
3–9
3–11
3–13
3–15
3–16
3–18
3–19
3–20
3–21

3–16
3–17
3–18
3–19
3–20

Installing a Sample RZ26, RZ26L, or RZ28 Disk Drive . . . . .
TLZ06/07 Tape Drive Connectors, SCSI ID Jumpers and
Switches, and Mounting Bracket . . . . . . . . . . . . . . . . . . . . . .
TZK10/11 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TZK10/11 Tape Drive SCSI ID Jumper Locations . . . . . . . . .
TZK10/11 Dress Bezel Insert and Mounting Bracket . . . . . . .

3–24
3–27
3–28
3–29

MicroVAX 3100 Platform Mass Storage Devices . . . . . . . . . . .

1–2

3–22

Tables
1–1

Preface

About This Manual
This manual describes new options and features for MicroVAX 3100 Model 30,
40, and 80 systems as supplemental information to the following manuals:
MicroVAX 3100 Platform BA42A Enclosure Maintenance, EK–A0510–MG
MicroVAX 3100 Platform BA42B Enclosure Maintenance, EK–A0511–MG
Guide to the MicroVAX 3100 Platform Maintenance Information Kit,
EK–A0512–MG
MicroVAX 3100 Platform KA45 CPU System Maintenance, EK–A0513–MG
MicroVAX 3100 Platform KA47 CPU System Maintenance, EK–A0514–MG
MicroVAX 3100 Platform Options, EK–A0519–MG
Use this supplement with previous documentation to service the following new
Field Replaceable Units (FRUs), that are supported by the MicroVAX 3100
platform:
RRD42 CD–ROM drive
RRD43 CD–ROM drive
RZ24L disk drive
RZ25L disk drive
RZ25M disk drive
RZ26 disk drive
RZ26L disk drive
RZ28 disk drive
TLZ06 tape drive
TLZ07 tape drive
TZK11 tape drive
Detailed information and specifications on each of these options has been
provided in MicroVAX 3100 Platform Options Supplement, EK–A0519-UD.

vii

Caution
Static electricity can damage integrated circuits. Always use the
antistatic wrist strap and antistatic pad found in the static-protective
field service kit (29-26246-00) when working with the internal parts of
a computer.
Handle options with care. Dropping or bumping an option can damage
it. Carry or hold the option by its frame or bracket.

viii

1
MicroVAX 3100 Platform Options
1.1 How to Use this Supplement
Use this manual to supplement information in:
MicroVAX 3100 Platform BA42A Enclosure Maintenance, EK–A0510–MG
MicroVAX 3100 Platform BA42B Enclosure Maintenance, EK–A0511–MG
Guide to the MicroVAX 3100 Platform Maintenance Information Kit,
EK–A0512–MG
MicroVAX 3100 Platform KA45 CPU System Maintenance, EK–A0513–MG
MicroVAX 3100 Platform KA47 CPU System Maintenance, EK–A0514–MG
MicroVAX 3100 Platform Options, EK–A0519-MG

1.2 Mass Storage Options
Table 1–1 lists the mass storage devices that the BA42A and BA42B enclosures can
contain.

MicroVAX 3100 Platform Options 1–1

MicroVAX 3100 Platform Options
1.2 Mass Storage Options
Table 1–1 MicroVAX 3100 Platform Mass Storage Devices
Option Name

Description

Size
(in.)

Capacity

RRD421

CD–ROM drive

5.25

600 MB CD–ROM

CD–ROM drive

5.25

600 MB CD–ROM

Disk drive

3.5

120 MB

RRD43
RZ23L
RZ24

Disk drive

3.5

200 MB

Disk drive

3.5

245 MB

RZ25

Disk drive

3.5

400 MB

RZ25L1

Disk drive

3.5

535 MB

Disk drive

3.5

545 MB

Disk drive

3.5

1.05 GB

Disk drive

3.5

1.05 GB

Disk drive

3.5

2.10 GB

TLZ06

4mm DAT

5.25

Range of cartridges

TLZ07

4mm DAT

5.25

Range of cartridges

Tape drive

5.25

95 MB cartridge

TZK10

Tape drive

5.25

Range of cartridges

TZK11

Tape drive

5.25

Range of cartridges

RX26

Diskette drive

3.5

Range of diskettes

RZ24L

RZ25M
RZ26

RZ26L

RZ281

TZ30

1 New option—not in previous documentation
2 MicroVAX 3100 Model 40, 85, 95 systems only.

All options available on the MicroVAX 3100 Platform have been documented in
detail in either the original options book or the latest supplement as follows:
•

For detailed information on the previous options, see the original options
book, MicroVAX 3100 Platform Options, EK–A0519-MG.

•

For detailed information on the new options, see MicroVAX 3100 Platform
Options Supplement, EK–A0519-UD.

1–2 MicroVAX 3100 Platform Options

2
FRU Removal and Replacement
2.1 Enclosure Description
MicroVAX 3100 Model 40 and 80 systems are housed in the BA42B enclosure,
which has both a lower and an upper drive-mounting shelf.
The MicroVAX 3100 Model 30 system is in the BA42A enclosure, which has a
lower drive-mounting shelf only, identical to the lower drive-mounting shelf in
the BA42B enclosure.

2.1.1 Location of Field Replacable Units (FRUs)
New options in the RZ-series can be installed in the BA42A or BA42B
enclosures in the same drive-mounting positions as earlier RZ-series drives.
The new removable media options can be installed in the same drive-mounting
positions as the older removable media options.
RZ-series and removable media drive-mounting positions for the MicroVAX
3100 Model 30 system (in the BA42A enclosure) are shown in MicroVAX 3100
Platform BA42A Enclosure Maintenance, EK–A0510–MG.
RZ-series and removeable media drive-mounting positions for MicroVAX 3100
Model 40 and 80 systems (in the BA42B enclosure) are shown in MicroVAX
3100 Platform BA42B Enclosure Maintenance, EK–A0511–MG.

FRU Removal and Replacement 2–1

FRU Removal and Replacement
2.1 Enclosure Description

2.1.2 Removing the Enclosure Cover
The enclosure cover is removed as shown in MicroVAX 3100 Platform BA42A
Enclosure Maintenance, EK–A0510–MG for the MicroVAX 3100 Model 30
system (in the BA42A enclosure).
MicroVAX 3100 Platform BA42B Enclosure Maintenance, EK–A0511–MG,
shows the removal of the enclosure cover from MicroVAX 3100 Model 40 and
80 systems (in the BA42B enclosure) .
MicroVAX 3100 Model 40 and 80 systems in the BA42B enclosure have an
upper drive-mounting shelf which must be removed to reach the lower drivemounting shelf. See MicroVAX 3100 Platform BA42B Enclosure Maintenance,
EK–A0511–MG to remove the upper shelf.

2–2 FRU Removal and Replacement

3
Removing and Replacing FRUs
3.1 Removing and Replacing an RRD42 CD–ROM
Use the following steps to remove an RRD42 CD–ROM drive.
1. Disconnect the power cable from the power connector on the back of the
drive (see Figure 3–1).
2. Note the pull-tab number on the SCSI cable connector that corresponds to
the storage slot where the drive is installed.
3. Disconnect the SCSI cable from the back of the drive (see Figure 3–1).

Removing and Replacing FRUs 3–1

Removing and Replacing FRUs
3.1 Removing and Replacing an RRD42 CD–ROM
Figure 3–1 RRD42 Cables

RE_EN06378A_91

4. Loosen the captive screw on the mounting bracket that secures the drive in
place, and remove the drive. Figure 3–3 shows a drive in the left storage
slot of the lower drive-mounting shelf.

3.1.1 Setting the SCSI ID Information
Note the position of the three SCSI ID jumpers and the parity jumper on the
drive you are removing (see Figure 3–2). Set the SCSI ID and parity jumpers
on the new drive to the same positions.

3–2 Removing and Replacing FRUs

Removing and Replacing FRUs
3.1 Removing and Replacing an RRD42 CD–ROM
Figure 3–2 RRD42 SCSI ID Jumper Locations and Mounting Bracket

Power
Connector
SCSI
Cable
Connector
SCSI ID
Jumper Wires

SCSI ID

Parity

Note: The SCSI ID shown is 4.
MLO-011307

3.1.2 Removing and Replacing the Mounting Bracket
1. Note how the mounting bracket is attached to the drive, in partucular
which set of bracket screw holes is used, and which side the captive screw
is on (see Figure 3–2). Viewing the front of the drive, the captive screw
is on the left-hand side of the drive for mounting in the right-hand drive
mounting position, and on the right to mount it in the left-hand position.
2. Remove the mounting bracket from the old drive and attach it to the new
drive in the same position.

Removing and Replacing FRUs 3–3

Removing and Replacing FRUs
3.1 Removing and Replacing an RRD42 CD–ROM

3.1.3 Installing the Replacement Drive
Use the following steps to install the replacement drive.
1. Connect the power cable to the power connector on the back of the drive
(see Figure 3–1).
2. Connect the SCSI cable to the back of the drive (see Figure 3–1).
3. Align the tabs on the mounting bracket with the cutouts in the drivemounting shelf (see Figure 3–3).
4. Tilt the drive slightly to slide the tabs in the drive-mounting shelf cutouts.
5. Lower the drive into position and tighten the captive screw on the
mounting bracket to secure the drive in place.
6. Replace the upper drive-mounting shelf (BA42B only) and the enclosure
cover.
Figure 3–3 Installing the RRD42 CD–ROM Drive

RRD42 Option
Captive Screw
MLO-011316

3–4 Removing and Replacing FRUs

Removing and Replacing FRUs
3.2 Removing and replacing an RRD43 CD–ROM

3.2 Removing and replacing an RRD43 CD–ROM
Use the following steps to remove an RRD43 CD–ROM drive.
1. Disconnect the power cable from the power connector on the back of the
drive (see Figure 3–4).
2. Note the pull-tab number on the SCSI cable connector that corresponds to
the storage slot where the drive is installed.
3. Disconnect the SCSI cable from the back of the drive (see Figure 3–4).
Figure 3–4 RRD43 CD–ROM Cables

MLO-012259

4. Loosen the captive screw on the mounting bracket that secures the drive in
place, and remove the drive. Figure 3–6 shows a drive in the left storage
slot of the lower drive-mounting shelf.

Removing and Replacing FRUs 3–5

Removing and Replacing FRUs
3.2 Removing and replacing an RRD43 CD–ROM

3.2.1 Setting the SCSI ID Information
Note the position of the three SCSI ID jumpers and the parity jumper on the drive you
are removing (see Figure 3–5). Set the SCSI ID and parity jumpers on the new drive to
the same positions.
Figure 3–5 RRD43 CD–ROM Drive Mounting Bracket and SCSI ID Jumper
Locations

Power
Connector
SCSI ID
Jumper Wires

SCSI
Cable
Connector

SCSI ID

4 Parity

Note: The SCSI ID Shown is 1
MLO-012257

3.2.2 Removing and Replacing the RRD43 Mounting Bracket
1. Note how the mounting bracket is attached to the drive, in particular
which mounting bracket screw holes are used, and which side the captive
screw is on (see Figure 3–5). Viewing the front of the drive, the captive
screw is on the left-hand side of the drive for mounting in the right-hand

3–6 Removing and Replacing FRUs

Removing and Replacing FRUs
3.2 Removing and replacing an RRD43 CD–ROM
drive mounting position, and on the right to mount it in the left-hand
position.
2. Remove the mounting bracket from the old drive and attach it to the new
drive in the same position.

3.2.3 Installing the Replacement Drive
Use the following steps to install the replacement drive.
1. Connect the power cable to the power connector on the back of the drive
(see Figure 3–4).
2. Connect the SCSI cable to the back of the drive (see Figure 3–4).
3. Align the tabs on the mounting bracket with the cutouts in the drivemounting shelf (see Figure 3–6).
4. Tilt the drive slightly to slide the tabs in the drive-mounting shelf cutouts.
5. Lower the drive into position and tighten the captive screw on the
mounting bracket to secure the drive in place.
6. Replace the upper drive-mounting shelf (BA42B only) and the enclosure
cover.

Removing and Replacing FRUs 3–7

Removing and Replacing FRUs
3.2 Removing and replacing an RRD43 CD–ROM
Figure 3–6 Installing the RRD43 CD–ROM Drive

RRD43
Captive Screw
MLO-012260

3–8 Removing and Replacing FRUs

Removing and Replacing FRUs
3.3 Removing and Replacing an RZ24L Disk Drive

3.3 Removing and Replacing an RZ24L Disk Drive
Use the following steps to remove an RZ24L disk drive.
1. Disconnect the power cable from the power connector on the back of the
drive (see Figure 3–7).
2. Note the pull-tab number on the SCSI cable connector that corresponds to
the storage slot where the drive is installed.
3. Disconnect the SCSI cable from the back of the drive (see Figure 3–7).
Figure 3–7 RZ24L Disk Drive Connectors, SCSI ID Jumpers, and Mounting
Bracket
Grommets

Mounting
Bracket

A2 A1
Power
Connector

SCSI
Connector
MLO-011305

4. Depress the spring clip that secures the drive in place and remove the
drive. Figure 3–8 shows a drive in the left and right storage slots of the
lower drive-mounting shelf, and how a drive is attached to the upper shelf
of a BA42B enclosure.

Removing and Replacing FRUs 3–9

Removing and Replacing FRUs
3.3 Removing and Replacing an RZ24L Disk Drive

3.3.1 Setting the SCSI ID Information
Note the position of the three SCSI ID jumpers on the drive you are removing
(see Figure 3–7). Set the SCSI ID jumpers on the new drive to the same
position.

3.3.2 Removing and Replacing the Mounting Bracket
1. Note how the mounting bracket is attached to the drive (see Figure 3–7).
2. Remove the mounting bracket from the old drive and attach it to the new
drive in the same position.

3.3.3 Installing the Replacemnet Drive
Use the following steps to install the replacement drive.
1. Connect the power cable to the power connector on the back of the drive
(see Figure 3–7).
2. Connect the SCSI cable to the back of the drive (see Figure 3–7).
3. Position the grommets attached to the mounting bracket in the cutouts of
the drive-mounting shelf (see Figure 3–8).
4. Slide the drive away from the spring clip until the grommets are secure in
the cutouts and the spring clip locks the disk drive into position.
5. Replace the upper drive-mounting shelf (if removed) and the enclosure
cover.

3–10 Removing and Replacing FRUs

Removing and Replacing FRUs
3.3 Removing and Replacing an RZ24L Disk Drive
Figure 3–8 Installing an RZ24L Disk Drive

Lock-out Screw

Spring Clip
Lock-out Screw

Spring Clip
MLO-011304

Note
The left-hand illustration in Figure 3–8 shows how a sample drive
is secured in any position on the top drive-mounting shelf of a
MicroVAX 3100 Model 40 or 80 system (BA42B enclosure only).
The MicroVAX 3100 Model 30 system (BA42A enclosure) and
MicroVAX 3100 model 40 and 80 systems have the same lower shelf.
The left-hand illustration in Figure 3–8 shows how a sample drive is
secured in the left-hand storage slot on the lower shelf. The right-hand
illustration shows how the drive is mounted in the right-hand position
on the lower shelf only.
The lock-out screw is only used on empty slots, and will not be present
where you have removed a drive.

Removing and Replacing FRUs 3–11

Removing and Replacing FRUs
3.4 Removing and Replacing an RZ25L Disk Drive

3.4 Removing and Replacing an RZ25L Disk Drive
Use the following steps to remove an RZ25L disk drive.
1. Disconnect the power cable from the power connector on the back of the
drive (see Figure 3–9).
2. Note the pull-tab number on the SCSI cable connector that corresponds to
the storage slot where the drive is installed.
3. Disconnect the SCSI cable from the back of the drive (see Figure 3–9).

3–12 Removing and Replacing FRUs

Removing and Replacing FRUs
3.4 Removing and Replacing an RZ25L Disk Drive
Figure 3–9 RZ25L Disk Drive Connectors, SCSI ID Jumpers, and Mounting
Bracket

Grommets

Mounting
Bracket

A0 A1

A2 A1
Power
Connector

SCSI
Connector

MLO-012054

4. Depress the spring clip that secures the drive in place and remove the
drive. Figure 3–10 shows a drive in the left and right storage slots of the
lower drive-mounting shelf, and how a drive is attached to the upper shelf
of a BA42B enclosure.

Removing and Replacing FRUs 3–13

Removing and Replacing FRUs
3.4 Removing and Replacing an RZ25L Disk Drive

3.4.1 Setting the SCSI ID Information
The RZ25L disk drive has two sets of jumpers for setting the SCSI ID. Only
one set can be used. Note the position of both sets of SCSI ID jumpers on the
drive you are removing (see Figure 3–9). Set the SCSI ID jumpers on the new
drive to the same positions.

3.4.2 Removing and Replacing the Mounting Bracket
1. Note how the mounting bracket is attached to the drive you are removing
(see Figure 3–9).
2. Remove the mounting bracket from the old drive and attach it to the new
drive in the same position.

3.4.3 Installing the Replacement Drive
Use the following steps to install the replacement drive.
1. Connect the power cable to the power connector on the back of the drive
(see Figure 3–9).
2. Connect the SCSI cable to the back of the drive (see Figure 3–9).
3. Position the grommets attached to the mounting bracket in the cutouts of
the drive-mounting shelf (see Figure 3–10).
4. Slide the drive away from the spring clip until the grommets are secure in
the cutouts and the spring clip locks the disk drive into position.
5. Replace the upper drive-mounting shelf (if removed), and the enclosure
cover.

3–14 Removing and Replacing FRUs

Removing and Replacing FRUs
3.4 Removing and Replacing an RZ25L Disk Drive
Figure 3–10 Installing an RZ25L-EK Disk Drive

Lock-out Screw

Spring Clip
Lock-out Screw

Spring Clip
MLO-011304

Note
The left-hand illustration in Figure 3–10 shows how a sample
drive is secured in any position on the top drive-mounting shelf of
a MicroVAX 3100 Model 40 or 80 system (BA42B enclosure only).
The MicroVAX 3100 Model 30 system (BA42A enclosure) and
MicroVAX 3100 model 40 and 80 systems have the same lower shelf.
The left-hand illustration in Figure 3–10 shows how a sample drive is
secured in the left-hand storage slot on the lower shelf. The right-hand
illustration shows how the drive is mounted in the right-hand position
on the lower shelf only.
The lock-out screw is only used on empty slots, and will not be present
where you have removed a drive.

Removing and Replacing FRUs 3–15

Removing and Replacing FRUs
3.5 Removing and Replacing an RZ25M Disk Drive

3.5 Removing and Replacing an RZ25M Disk Drive
Use the following steps to remove an RZ25M disk drive.
1. Disconnect the power cable from the power connector on the back of the
drive (see Figure 3–11).
2. Note the pull-tab number on the SCSI cable connector that corresponds to
the storage slot where the drive is installed.
3. Disconnect the SCSI cable from the back of the drive (see Figure 3–11).
Figure 3–11 RZ25M Disk Drive Connectors, SCSI ID Jumpers, and Mounting
Bracket
6

4
2

SCSI
Connector
Power
Connector

Mounting
Bracket

Grommets

MLO-013146

4. Depress the spring clip that secures the drive in place and remove the
drive. Figure 3–12 shows a drive in the left and right storage slots of the
lower drive-mounting shelf, and how a drive is attached to the upper shelf
of a BA42B enclosure.

3–16 Removing and Replacing FRUs

Removing and Replacing FRUs
3.5 Removing and Replacing an RZ25M Disk Drive

3.5.1 Setting the SCSI ID Information
Note the position of the three SCSI ID jumpers on the drive you are removing
(see Figure 3–11). Set the jumpers on the new drive to the same position.

3.5.2 Removing and Replacing the Mounting Bracket
1. Note how the mounting bracket is attached to the drive you are removing
(see Figure 3–11).
2. Remove the mounting bracket from the old drive and attach it to the new
drive in the same position.

3.5.3 Installing the Replacement Drive
Use the following steps to install the replacement drive.
1. Connect the power cable to the power connector on the back of the drive
(see Figure 3–11).
2. Connect the SCSI cable to the back of the drive (see Figure 3–11).
3. Position the grommets attached to the mounting bracket in the cutouts of
the drive-mounting shelf (see Figure 3–12).
4. Slide the drive away from the spring clip until the grommets are secure in
the cutouts and the spring clip locks the disk drive into position.
5. Replace the upper drive-mounting shelf (if removed) and the enclosure
cover.

Removing and Replacing FRUs 3–17

Removing and Replacing FRUs
3.5 Removing and Replacing an RZ25M Disk Drive
Figure 3–12 Installing an RZ25M Disk Drive

Lock-out Screw

Spring Clip
Lock-out Screw

Spring Clip
MLO-011304

Note
The RZ25M disk drive is only available for the MicroVAX 3100
Model 40 system (BA42A enclosure). The left-hand illustration in
Figure 3–12 shows how a sample drive is secured on the upper
drive-mounting shelf or the left-hand storage slot on the lower shelf.
The right-hand illustration shows how the drive is mounted in the
right-hand position on the lower shelf only.
The lock-out screw is only used on empty slots, and will not be present
where you have removed a drive.

3–18 Removing and Replacing FRUs

Removing and Replacing FRUs
3.6 Removing an RZ26, RZ26L, or RZ28 Disk Drive

3.6 Removing an RZ26, RZ26L, or RZ28 Disk Drive
Use the following steps to remove an RZ26, RZ26L, or RZ28 disk drive.
1. Disconnect the power cable from the power connector on the back of the
drive (see Figure 3–13).
2. Note the pull-tab number on the SCSI cable connector that corresponds to
the storage slot where the drive is installed.
3. Disconnect the SCSI cable from the back of the drive (see Figure 3–13).
Figure 3–13 Disconnecting the Cables from a Sample RZ26, RZ26L, or RZ28

Power
Connector

SCSI
Connector

MLO-011311

4. Depress the spring clip that secures the drive in place and remove the
drive. Figure 3–16 shows a drive in the left and right storage slots of the
lower drive-mounting shelf, and how a drive is attached to the upper shelf
of a BA42B enclosure.

3.6.1 Setting the SCSI ID Information
Note the position of the three SCSI ID jumpers on the drive you are removing
(see Figure 3–14). Set the SCSI ID jumpers on the new drive to the same
position.

Removing and Replacing FRUs 3–19

Removing and Replacing FRUs
3.6 Removing an RZ26, RZ26L, or RZ28 Disk Drive
Figure 3–14 Sample RZ26, RZ26L, RZ28 Disk Drive SCSI ID Jumper
Locations

Busy LED
Pin 5 3 1
19

20
Fault LED

MLO-010179

3.6.2 Removing and Replacing the Mounting Bracket
1. Note how the mounting bracket is attached to the drive you are removing
(see Figure 3–15).
2. Remove the mounting bracket from the old drive and attach it to the new
drive in the same position.

3–20 Removing and Replacing FRUs

Removing and Replacing FRUs
3.6 Removing an RZ26, RZ26L, or RZ28 Disk Drive
Figure 3–15 Sample RZ26, RZ26L, RZ28 Disk Drive Mounting Bracket
(Bottom View)
Grommets

Mounting
Bracket

MLO-011302

3.6.3 Installing the Replacement Drive
Use the following steps to install the replacement drive.
1. Connect the power cable to the power connector on the back of the drive
(see Figure 3–13).
2. Connect the SCSI cable to the back of the drive (see Figure 3–13).

Removing and Replacing FRUs 3–21

Removing and Replacing FRUs
3.6 Removing an RZ26, RZ26L, or RZ28 Disk Drive
3. Position the grommets attached to the mounting bracket in the cutouts of
the drive-mounting shelf (see Figure 3–16).
4. Slide the drive away from the spring clip until the grommets are secure in
the cutouts and the spring clip locks the disk drive into position.
5. Replace the upper drive-mounting shelf (if removed), and the enclosure
cover.
Figure 3–16 Installing a Sample RZ26, RZ26L, or RZ28 Disk Drive

Lock-out Screw

Spring Clip
Lock-out Screw

Spring Clip
MLO-011304

Note
The left-hand illustration in Figure 3–16 shows how a sample
drive is secured in any position on the top drive-mounting shelf of
a MicroVAX 3100 Model 40 or 80 system (BA42B enclosure only).
The MicroVAX 3100 Model 30 system (BA42A enclosure) and
MicroVAX 3100 model 40 and 80 systems have the same lower shelf.
The left-hand illustration in Figure 3–16 shows how a sample drive is
secured in the left-hand storage slot on the lower shelf. The right-hand
illustration shows how the drive is mounted in the right-hand position
on the lower shelf only.
The lock-out screw is only used on empty slots, and will not be present
where you have removed a drive.

3–22 Removing and Replacing FRUs

Removing and Replacing FRUs
3.7 Removing and Replacing a TLZ06 or TLZ07 Tape Drive

3.7 Removing and Replacing a TLZ06 or TLZ07 Tape Drive
Use the following steps to remove a TLZ06 or TLZ07 disk drive.
1. Disconnect the power cable from the power connector on the back of the
drive (see Figure 3–17).
2. Note the pull-tab number on the SCSI cable connector that corresponds to
the storage slot where the drive is installed.
3. Disconnect the SCSI cable from the back of the drive (see Figure 3–17).

Removing and Replacing FRUs 3–23

Removing and Replacing FRUs
3.7 Removing and Replacing a TLZ06 or TLZ07 Tape Drive
Figure 3–17 TLZ06/07 Tape Drive Connectors, SCSI ID Jumpers and
Switches, and Mounting Bracket

Term Power

SCSI
Connector

SCSI Jumpers

32 1

O
F
F

Power
Connector

SCSI ID and
Option Switch
(Refer to Text
for Switch
Settings)
Terminator Resistor
Pack Sockets
(Place Pin 1 Here)

MLO-011308

4. Loosen the captive screw on the mounting bracket that secures the drive in
place (see Figure 3–17).

3–24 Removing and Replacing FRUs

Removing and Replacing FRUs
3.7 Removing and Replacing a TLZ06 or TLZ07 Tape Drive

3.7.1 Setting the SCSI ID Information
Note
The SCSI ID of TLZ06/TLZ07 tape drives can be set either by jumpers
or switches, but only one method or the other can be used. The jumper
pins are logically ORed with the SCSI ID switches; setting a switch is
equivalent to installing a jumper.

The default switch settings for the SCSI ID and option switches on the
TLZ06/07 tape drive are all off except for switches S4, S5, S6, and S8, which
are on.
Note the position of the three SCSI ID jumpers or switches on the drive you
are removing (see Figure 3–17). Set the SCSI ID jumpers or switches on the
new drive to the same position.

3.7.2 Removing and Replacing the Mounting Bracket
1. Note how the mounting bracket is attached to the drive, in particular
which mounting bracket screw holes are used, and which side the captive
screw is on (see Figure 3–17). Viewing the front of the drive, the captive
screw is on the left-hand side of the drive for mounting in the right-hand
drive mounting position, and on the right to mount it in the left-hand
position.
2. Remove the mounting bracket from the old drive and attach it to the new
drive in the same position.

3.7.3 Installing the Replacement Drive
Use the following steps to install the replacement drive.
1. Connect the power cable to the power connector on the back of the drive
(see Figure 3–17).
2. Connect the SCSI cable to the back of the drive (see Figure 3–17).
3. Align the tabs on the mounting bracket with the cutouts in the drivemounting shelf. See Figure 3–6 for an example of how a similar storage
device and mounting bracket are installed.

Removing and Replacing FRUs 3–25

Removing and Replacing FRUs
3.7 Removing and Replacing a TLZ06 or TLZ07 Tape Drive
4. Tilt the drive slightly to slide the tabs in the drive-mounting shelf cutouts.
5. Lower the drive into position and tighten the captive screw on the
mounting bracket to secure the drive in place.
6. Replace the upper drive-mounting shelf (BAB42 only) and the enclosure
cover.

3–26 Removing and Replacing FRUs

Removing and Replacing FRUs
3.8 Removing and Replacing a TZK10 or TZK11 Tape Drive

3.8 Removing and Replacing a TZK10 or TZK11 Tape Drive
Use the following steps to remove a TZK10 or TZK11 tape drive.
1. Disconnect the power cable from the power connector on the back of the
drive (see Figure 3–18).
2. Note the pull-tab number on the SCSI cable connector that corresponds to
the storage slot where the drive is installed.
3. Disconnect the SCSI cable from the back of the drive (see Figure 3–18).
Figure 3–18 TZK10/11 Cables

SCSI
Connector

Power
Connector
MLO-011310

4. Loosen the captive screw on the mounting bracket that secures the drive in
place and remove the drive. Figure 3–20 shows the installation of a drive
in the right storage slot of the lower drive-mounting shelf.

3.8.1 Setting the SCSI ID Information
Note the position of all jumpers on the drive being removed, and set the
jumpers on the new drive to the same position (see Figure 3–19).
The jumper wire on the left-hand side of the SCSI ID select jumpers is installed
by default.
In the TZK10 drive, the jumper to the left of the SCSI ID select pins enables
parity.
In the TZK11 drive, the jumper to the left of the SCSI ID select pins is a
Vendor/Product ID Select (VSEL) switch. This jumper should be installed in a
TZK11 that resides in a MicroVAX 3100 system.

Removing and Replacing FRUs 3–27

Removing and Replacing FRUs
3.8 Removing and Replacing a TZK10 or TZK11 Tape Drive
Figure 3–19 TZK10/11 Tape Drive SCSI ID Jumper Locations

SCSI
ID Select
Parity or
VSEL

TERMPWR
2 1 0

Note: Parity (TZK10)
VSEL (TZK11)
MLO-011309

3.8.2 Removing and Replacing the Mounting Bracket
1. If you have a MicroVAX 3100 Model 30 system, the TZK10/TZK11 drive
has a dress bezel (see Figure 3–20). Detach the bezel from the drive you
are removing, and install it on the new drive.
2. Note how the mounting bracket is attached to the old drive, in particular
which mounting bracket screw holes are used, and which side the captive
screw is on (see Figure 3–20).
3. Remove the mounting bracket from the old drive and attach it to the new
drive in the same position.

3–28 Removing and Replacing FRUs

Removing and Replacing FRUs
3.8 Removing and Replacing a TZK10 or TZK11 Tape Drive
Figure 3–20 TZK10/11 Dress Bezel Insert and Mounting Bracket

Mounting Bracket
Dress Bezel
(Model 30 only)
MLO-011303

3.8.3 Installing the Replacement Drive
Use the following steps to install the replacement drive.
1. Connect the power cable to the power connector on the back of the drive
(see Figure 3–18).
2. Connect the SCSI cable to the back of the drive (see Figure 3–18).
3. Align the tabs on the mounting bracket with the cutouts in the drivemounting shelf. See Figure 3–6 for an example of how a similar storage
device and mounting bracket are installed.
4. Tilt the drive slightly to slide the tabs in the drive-mounting shelf cutouts.
5. Lower the drive into position and tighten the captive screw on the
mounting bracket to secure the drive in place.
6. Replace the upper drive-mounting shelf (if removed) and the enclosure
cover.

Removing and Replacing FRUs 3–29

Reader’s Comments

MicroVAX Models 30/40/80 Supplement
EK–M3148–SI. A01

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