Compaq SW TL881 DLT Mini-Lib/1 User manual

TL881 MiniLibrary Drive Upgrade
Procedure
First Edition (May 1999)
Part Number ER-TL881-DA. A01/138248-001
Compaq Computer Corporation

Notice
The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR
USE OF THIS MATERIAL. THIS INFORMATION IS PROVIDED “AS IS” AND COMPAQ
COMPUTER CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR
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MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE AND AGAINST
INFRINGEMENT.
This publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.
© 1999 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
The software described in this guide is furnished under a license agreement or nondisclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement.
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Pentium is a registered trademark and Xeon is a trademark of Intel Corporation.
Other product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
TL881 MiniLibrary Drive Upgrade Procedure
First Edition (May 1999)
Part Number ER-TL881-DA. A01/138248-001

Contents
About This Guide
Text Conventions....................................................................................................v
Symbols in Text.....................................................................................................vi
Symbols on Equipment..........................................................................................vi
Rack Stability.......................................................................................................vii
Getting Help.........................................................................................................vii
Compaq Technical Support ............................................................................vii
Compaq Website...........................................................................................viii
Compaq Authorized Reseller...........................................................................ix
Adding a Second Tape Drive
Parts Location.........................................................................................................1
Overall Procedure...................................................................................................2
Removing and Replacing the Skin Cover (Desktop Models Only).....................3
Removing and Replacing the Cover Plate.........................................................4
Removing and Replacing the Drive Caddy Assembly .......................................5
Installing the Second Tape Drive......................................................................7
Index

iv TL881 MiniLibrary Drive Upgrade Procedure
List of Figures
Figure 1. Parts Location.........................................................................................1
Figure 2. Removing the Skin Cover........................................................................3
Figure 3. Removing the Cover Plate.......................................................................5
Figure 4. Drive Caddy Assembly Parts...................................................................6
List of Tables
Table 1 Parts Location ............................................................................................2

About This Guide
This guide is designed to be used as step-by-step instructions for installation
and as a reference for operation, troubleshooting, and future upgrades.
Text Conventions
This document uses the following conventions to distinguish elements of text:
Keys Keys appear in boldface. A plus sign (+) between
two keys indicates that they should be pressed
simultaneously.
USER INPUT User input appears in a different typeface and in
uppercase.
FILENAMES File names appear in uppercase italics.
Menu Options,
Command Names,
Dialog Box Names
These elements appear in initial capital letters.
COMMANDS,
DIRECTORY NAMES,
and DRIVE NAMES
These elements appear in uppercase.
Type When you are instructed to type information, type
the information without pressing the Enter key.
Enter When you are instructed to enter information, type
the information and then press the Enter key.

vi TL881 MiniLibrary Drive Upgrade Procedure
Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
WARNING: Text set off in thismanner indicatesthat failure to followdirections
in the warning could result in bodilyharmor loss of life.
CAUTION: Text set offin this manner indicates that failure to follow directions
could result indamage toequipment or loss of information.
IMPORTANT: Text set off in this mannerpresents clarifying information or specific
instructions.
NOTE: Text set off in thismanner presents commentary, sidelights,or interestingpoints
of information.
Symbols on Equipment
These icons may be located on equipment in areas where hazardous conditions
may exist.
Any surface or areaof the equipment marked with these symbols
indicates the presence of electrical shockhazards. Enclosed area
contains no operator serviceable parts.
WARNING: To reduce the risk of injury from electrical shockhazards,
do not open this enclosure.
Any RJ-45 receptacle markedwiththese symbols indicatesa Network
Interface Connection.
WARNING: To reduce the risk of electrical shock, fire, ordamage to
the equipment, do notplug telephone or telecommunications
connectors into this receptacle.
Any surface or areaof the equipment marked with these symbols
indicates the presence of a hot surface orhot component. If this
surface is contacted, the potential for injury exists.
WARNING: To reduce the risk of injury from a hot component,allow
the surface to coolbefore touching.

About This Guide vii
Power Supplies or Systems marked with these symbols
indicate theequipment issupplied bymultiple sources of
power.
WARNING: To reduce the risk of injury from electrical shock,
remove all power cords to completely disconnect power from
the system.
Rack Stability
WARNING: To reduce the risk of personal injury or damage to the equipment,
be sure that:
■The leveling jacks are extended to the floor.
■The full weightof the rackrestson the leveling jacks.
■The stabilizing feet are attached to the rackif itis a single rack
installations.
■The racksare coupled together in multiple rack installations.
■A rack may become unstable if more than one component is extended for
any reason.Extend onlyone componentat a time.
Getting Help
If you have a problem and have exhausted the information in this guide, you
can get further information and other help in the following locations.
Compaq Technical Support
You are entitled to free hardware technical telephone support for your product
for as long you own the product. A technical support specialist will help you
diagnose the problem or guide you to the next step in the warranty process.
In North America, call the Compaq Technical Phone Support Center at
1-800-OK-COMPAQ1. This service is available 24 hours a day, 7 days a week.
Outside North America, call the nearest Compaq Technical Support Phone
Center. Telephone numbers for world wide Technical Support Centers are
1For continuous quality improvement, calls may be recorded or monitored.

viii TL881 MiniLibrary Drive Upgrade Procedure
listed on the Compaq website. Access the Compaq website by logging on to
the Internet at http://www.compaq.com.
Be sure to have the following information available before you call Compaq:
■Technical support registration number (if applicable)
■Product serial number (s)
■Product model name(s) and numbers(s)
■Applicable error messages
■Add-on boards or hardware
■Third-party hardware or software
■Operating system type and revision level
■Detailed, specific questions
Compaq Website
The Compaq website has information on this product as well as the latest
drivers and Flash ROM images. You can access the Compaq website by
logging on to the Internet at http://www.compaq.com.

About This Guide ix
Compaq Authorized Reseller
For the name of your nearest Compaq Authorized Reseller:
■In the United States, call 1-800-345-1518.
■In Canada, call 1-800-263-5868.
■Elsewhere, see the Compaq website for locations and telephone
numbers.

Adding a Second Tape Drive
IMPORTANT: All screws that do not use lock washers, captive washers or lock nuts
must have Loctite 222 applied when parts are reassembled in the field. If you ignore this
step, you might cause premature failure of the mechanism.
Parts Location
Figure 1 shows the location of most of the field replaceable parts. Table 1
describes the parts.
1
14
2
3456
7
8
9
1011
12
13
SHR-1201
Figure 1. Parts Location

2TL881 MiniLibrary Drive Upgrade Procedure
Table 1
Parts Location
Number Part
(1) Magazine door
(2) Door opener/Magazine lock
(3) Shuttle cable
(4) Shuttle
(5) Shuttle motor
(6) Drive caddy assembly
(7) Fan
(8) Power supply
(9) Controller PWB
(10) AC power switch
(11) Control panel
(12) Unlock/open switch
(13) Magazine security lock
(14) Leadscrew
Overall Procedure
NOTE: If the base module is part of an expanded TL881 MiniLibrary subsystem, refer to
the
TL881 Mini Library Service Manual for information on removing the base module
from the subsystem.
To add a second drive to the base module you must do the following steps.
1. Remove the skin cover, if present, using the procedure in this
document.
2. Remove the cover plate using the procedure in this document.
3. Remove the drive caddy assembly using the procedure in this
document.

Adding a Second Tape Drive 3
4. Install the new drive using the procedure described in this document.
5. Replace the drive caddy assembly.
6. Replace the cover plate.
7. Replace the skin cover.
Removing and Replacing the Skin Cover (Desktop
Models Only)
The skin cover is held in place by two screws on each side of the base
module (Figure 2).
SHR-1433
Figure 2. Removing the Skin Cover
Removing
Do these steps to remove the skin cover from the base module.
1. Remove the two screws on each side of the base module.
2. Grasp the cover by the sides at the bottom edge and pull outwards
slightly while lifting the cover straight up and off the chassis.
Replacing
Do these steps to replace the skin cover on the base module.

4TL881 MiniLibrary Drive Upgrade Procedure
1. Position the skin cover over the base module with the two angled
surfaces facing toward the front.
2. Slide the skin cover over the module until it touches the front panel.
3. Insert the two screws on each side through the skin cover into the base
module; insert and start all four screws before you tighten any of them.
Removing and Replacing the Cover Plate
Removing
Do these steps to remove the cover plate from the base module.
1. If the base module is a desktop model, remove the skin cover as
described in Removing and Replacing the Skin Cover (Desktop Models
Only).
2. Disconnect the power and interface cables at the rear of the module.
3. Unscrew the captive screw in the center of the cover plate (Figure 3).
4. Slide the cover plate one-half inch toward the rear of the module.
5. Lift the cover plate off the base module.
Replacing
Do these steps to replace the cover plate on the base module.
1. Place the cover plate on the base module so that it overhangs one-half
inch at the rear of the module (Figure 3).
2. Slide the cover plate toward the front of the base module until the
cover plate touches the front panel.
3. Tighten the captive screw in the center of the cover plate.
4. Connect the power and interface cables at the rear of the module.
5. If the base module is a desktop model, replace the skin cover as
described in Removing and Replacing the Skin Cover (Desktop Models
Only).

Adding a Second Tape Drive 5
SHR-1203 66
Figure 3. Removing the Cover Plate
Removing and Replacing the Drive Caddy Assembly
The drive caddy assembly is an enclosure that holds one or two DLT drives
and the interconnecting cables. The assembly includes the SCSI interface
connectors and cables for the base module, the power cables for the drives,
and communication cables from the drives to the controller PWB.
Removing
Do these steps to remove the drive caddy assembly from the base module.
1. Remove the cover plate as described in Removing and Replacing the
Cover Plate.
2. Disconnect the SCSI cable connectors (1) ( Figure 4) from the
controller SCSI extension cable.

6TL881 MiniLibrary Drive Upgrade Procedure
1
5
5
4
7
4
7
2
6
3
SHR-1204
Figure 4. Drive Caddy Assembly Parts
3. Disconnect the drive power “Y” cable (2) from the power supply
connector.
4. Disconnect the drive 1 RS-422 cable (3) at the controller PWB end.
5. Remove two M4 x 8mm flat-head screws (4) along the upper edge of
the drive caddy assembly.
6. Remove two M4 extension screws (5) at the top of the drive caddy
assembly.
CAUTION: If you’re not careful, you might break the door levers when you lift
the drive caddy assemblyout of the base module in the next step. To prevent
this, steady the caddy so it cannot rock forward as it clears the platform when
you’re lifting it up, and do not allow the door levers to touch the strut across
the top of the base module.

Adding a Second Tape Drive 7
7. Grasp the handle on top and lift the drive caddy assembly out of the
base module carefully; be careful the door levers don’t bump against
the chassis crossbrace.
8. Set the drive caddy assembly on the work surface and install the
second tape drive as described in Installing the Second Tape Drive.
Replacing
Do these steps to replace the drive caddy assembly in the base module.
CAUTION: If you’re not careful, you might break the door levers when you set
the drive caddyassembly down in the base module.To prevent this, steady the
assembly asyou lower it by the handle so it cannot rock forward asit
approachesthe platform,and do not allow the door levers to touch the strut
across the top of the chassis.
1. Grasp the drive caddy assembly by the handle and lower it into
position in the base module; orient it as shown in Figure 4, and be
careful the door levers don’t bump against the chassis crossbrace.
2. Replace the two M4 extension screws (5) at the top of the assembly
3. Coat the threads of the two M4 x 8mm flat-head Phillips screws (4)
with Loctite 222, and replace them on the upper edge of the drive
caddy assembly.
4. Connect the drive 1 and drive 2 RS-422 cables (3) to the controller
PWB.
5. Connect the drive power cable (2) to the power supply connector.
6. Connect the SCSI cable connectors (1) to the controller SCSI extension
cable.
7. Replace the cover plate as described in Removing and Replacing the
Cover Plate.

8TL881 MiniLibrary Drive Upgrade Procedure
Installing the Second Tape Drive
Do the following steps to install the second tape drive.
1. Remove the four 6-32 sems pan-head Phillips screws (7) that hold the
blank panel in place in the drive caddy assembly; there are two on the
top of the assembly (Figure 4) and two on the bottom of the assembly.
2. Slide the blank panel out of the drive caddy assembly.
3. Disconnect the RS-422 cable toward the front on the top of the drive,
and lift the cable clear of the cable clamps; set it aside.
4. Install the door lever on the flatted shaft at the bottom of the drive.
5. Slide the drive (6) into the drive caddy assembly; position the drive so
the threaded holes in the top and bottom of the drive are aligned with
the screws holes.
6. Install the four 6-32 sems pan-head Phillips screws that were removed
in Step 1.
7. Connect the unused connector on the power Y-cable to the drive just
installed.
8. Connect the unused connector on the SCSI cable to the drive just
installed.
9. Install the RS-422 cable supplied with the kit, sliding it under the
clamps so that the connector is adjacent to the connector on top of the
new drive.
10. Install the RS-422 cable removed in Step 3 over the top of the new RS-
422 cable so that the connector is adjacent to the connector on top of
the original drive.
11. Connect the RS-422 cables to the connectors on the top of the drives,
through the holes in the top of the drive caddy assembly.
12. Replace the drive caddy assembly as described in Removing and
Replacing the Drive Caddy Assembly.

Index
B
base module 2
C
CAUTION
door levers 6
Compaq authorized reseller viii
cover plate 2, 4
D
drive 1 RS-422 cable 6
drive caddy assembly 2, 5
drive power "Y" cable 6
F
Field replaceable parts 1
G
getting help vii
H
helpadditional sources vii
Compaq website viii
Compq authorized resellers,
telephone numbers viii
technical support telephone
numbers vii
http://www.compaq.com viii
I
icons
symbols on equipment vi
L
Loctite 222 1
O
Overall Procedure 2
P
power and interface cables 4
R
RJ-45 receptacle vi

2 TL881 MiniLibrary Drive Upgrade Procedure
S
SCSI cable connectors 5
second tape drive 7
skin cover 2
symbols in text vi
symbols on equipment vi
T
Table 1 Parts Location 2
technical support viii
telephone numbers viii
text conventions v
W
warnings
electrical shock vii
rack stability vii
www.compaq.com. viii