Compaq SW TL881 DLT Mini-Lib/1 User manual

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Writer: Bob Young Project: Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure Comments:
Part Number: 127511-002 File Name: a-frnt.doc Last Saved On: 7/13/00 9:44 AM
TL881/TL891 Family MiniLibrary
System Drive
Upgrade Procedure
Second Edition (July 2000)
Part Number 127511-002
Compaq Computer Corporation

Compaq Confidential – Need to Know Required
Writer: Bob Young Project: Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure Comments:
Part Number: 127511-002 File Name: a-frnt.doc Last Saved On: 7/13/00 9:44 AM
Notice
© 2000 Compaq Computer Corporation.
Compaq, the Compaq logo, and StorageWorks Registered in U. S. Patent and Trademark Office.
All other product names mentioned herein may be trademarks or registered trademarks of their
respective companies.
Compaq shall not be liable for technical or editorial errors or omissions contained herein. The
information in this document is subject to change without notice.
The information in this publication is subject to change without notice and is provided “AS IS”
WITHOUT WARRANTY OF ANY KIND. THE ENTIRE RISK ARISING OUT OF THE USE OF
THIS INFORMATION REMAINS WITH RECIPIENT. IN NO EVENT SHALL COMPAQ BE
LIABLE FOR ANY DIRECT, CONSEQUENTIAL, INCIDENTAL, SPECIAL, PUNITIVE OR
OTHER DAMAGES WHATSOEVER (INCLUDING WITHOUT LIMITATION, DAMAGES FOR
LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION OR LOSS OF BUSINESS
INFORMATION), EVEN IF COMPAQ HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. THE FOREGOING SHALL APPLY REGARDLESS OF THE NEGLIGENCE OR
OTHER FAULT OF EITHER PARTY AND REGARDLESS OF WHETHER SUCH LIABILITY
SOUNDS IN CONTRACT, NEGLIGENCE, TORT, OR ANY OTHER THEORY OF LEGAL
LIABILITY, AND NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY
LIMITED REMEDY.
The limited warranties for Compaq products are exclusively set forth in the documentation
accompanying such products. Nothing herein should be construed as constituting a further or additional
warranty.
Printed in the U.S.A.
Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
Second Edition (July 2000)
Part Number 127511-002

Compaq Confidential – Need to Know Required
Writer: Bob Young Project: Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure Comments:
Part Number: 127511-002 File Name: a-frnt.doc Last Saved On: 7/13/00 9:44 AM
Contents
About This Guide
Text Conventions.........................................................................................................v
Symbols in Text..........................................................................................................vi
Symbols on Equipment...............................................................................................vi
Getting Help ..............................................................................................................vii
Compaq Technical Support ................................................................................vii
Compaq Website .............................................................................................. viii
Compaq Authorized Reseller............................................................................ viii
Adding a Second Drive
Introduction .................................................................................................................1
Parts Location ..............................................................................................................2
General Procedure .......................................................................................................3
Removing and Replacing the Skin Cover (Desktop Models Only) ......................4
Removing and Replacing the Cover Plate ............................................................5
Removing and Replacing the Drive Caddy Assembly .........................................6
Installing the Second Tape Drive .........................................................................9

iv Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
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List of Figures
Figure 1. Parts location .............................................................................................. 2
Figure 2. Removing the skin cover ............................................................................ 4
Figure 3. Removing the cover plate ........................................................................... 6
Figure 4. Drive caddy ................................................................................................ 7
List of Tables
Table 1 Parts Location ................................................................................................ 2

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About This Guide
This guide is designed to be used as step-by-step instructions for upgrading
and as a reference for 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 Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
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Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
WARNING: Text set off in this manner indicates that failure to follow directions
in the warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions
could result in damage to equipment or loss of information.
IMPORTANT: Text set off in this manner presents clarifying information or specific
instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or interesting points
of information.
Symbols on Equipment
These icons may be located on equipment in areas where hazardous conditions
may exist.
Any surface or area of the equipment marked with these symbols
indicates the presence of electrical shock hazards. Enclosed area
contains no operator serviceable parts.
WARNING: To reduce the risk of injury from electrical shock hazards,
do not open this enclosure.
Any RJ-45 receptacle marked with these symbols indicates a Network
Interface Connection.
WARNING: To reduce the risk of electrical shock, fire, or damage to
the equipment, do not plug telephone or telecommunications
connectors into this receptacle.

About This Guide vii
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Any surface or area of the equipment marked with these symbols
indicates the presence of a hot surface or hot 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 cool before touching.
Power Supplies or Systems marked with these symbols
indicate the equipment is supplied by multiple sources of
power.
WARNING: To reduce the risk of injury from electrical shock,
remove all power cords to completely disconnect power from
the system.
Any product or assembly marked with these symbols indicates that
the component exceeds the recommended weight for one individual
to handle safely.
WARNING: To reduce the risk of personal injury or damage to the
equipment, observe local occupational health and safety
requirements and guidelines for manual material handling.
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.

viii Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
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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
listed on the Compaq website. Access the Compaq website 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 at
http://www.compaq.com.
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.
1For continuous quality improvement, calls may be recorded or monitored.

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Part Number: 127511-002 File Name: b-ch1 Adding a Second Drive.doc Last Saved On: 7/12/00 7:16 PM
Adding a Second Drive
Introduction
This guide explains how to add a second tape drive to the Compaq
StorageWorks TL881/TL891 Family MiniLibrary SystemTM.
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.

2Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
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Part Number: 127511-002 File Name: b-ch1 Adding a Second Drive.doc Last Saved On: 7/12/00 7:16 PM
Parts Location
Figure 1 shows the location of most of the field-replaceable parts.
1
14
2
3
4
56
7
8
9
10
11
12
13
SHR-1719
Figure 1. Parts location
Table 1
Parts Location
Figure Legend Description
1Magazine door
2Door opener/magazine lock
3Shuttle cable
4Shuttle
5Shuttle motor
6Drive caddy assembly
7Fan
8Power supply
9Controller PWB
continued

Adding a Second Drive 3
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Table 1
Parts Location continued
Figure Legend Description
:AC power switch
;Control panel
<Unlock/Open button and locked
indicator
=Magazine security lock
>Leadscrew
General Procedure
NOTE: If the Base Module is part of an expanded TL881/TL891 Family MiniLibrary
System, refer to the Compaq StorageWorks TL881/TL890/TL891 Family MiniLibrary
System Maintenance and Service Guide for information on removing the Base Module
from the MiniLibrary system.
To add a second drive to the Base Module:
1. Remove the skin cover, if present.
2. Remove the cover plate.
3. Remove the drive caddy assembly.
4. Install the new drive.
5. Replace the drive caddy assembly.
6. Replace the cover plate.
7. Replace the skin cover.

4Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
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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).
Figure 2. Removing the skin cover
Removing
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 at the lower edge of each side and then lift it straight up.
There are two notches on each side of the cover to help clear the
mounting brackets.
SHR-1720

Adding a Second Drive 5
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Replacing
To replace the skin cover on the Base Module:
1. Slide the skin cover over the module until it touches the front panel.
2. Insert the four screws (2 each side) through the skin cover into the Base
Module. Do not tighten the screws yet.
3. Position the front edge of the skin cover so that it is flush against the
back of the front panel.
4. Tighten the four screws (2 each side) into the Base Module.
Removing and Replacing the Cover Plate
Removing
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.

6Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
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Replacing
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).”
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.
SHR-1721

Adding a Second Drive 7
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Removing
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 ( 1Figure 4) from the controller
SCSI extension cable.
1
5
5
4
7
4
7
2
6
3
Figure 4. Drive caddy
SHR-1722

8Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
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Writer: Bob Young Project: Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure Comments:
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3. Disconnect the drive power Y cable 2from the power supply
connector.
4. Disconnect the drive 1 RS-422 cable 3from the controller PWB end.
5. Remove two M4 x 8 mm flat-head screws 4from along the upper edge
of the drive caddy assembly.
6. Remove two M4 extension screws 5from the top of the drive caddy
assembly.
CAUTION: Be careful not to break the door levers when you lift the drive caddy
assembly out 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.
7. Grasp the handle on top and lift the drive caddy assembly out of the
Base Module carefully. Make sure you tilt the rear end of the caddy as it
is being removed so the door levers don’t bump against the chassis
crossbrace.
CAUTION: Do not place the drive caddy assembly with the levers facing down.
Place the drive caddy so that the levers are facing up or on their sides.
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
To replace the drive caddy assembly in the Base Module:
CAUTION: To prevent breaking of the door levers, steady the assembly as you
lower it by the handle so it cannot rock forward as it approaches the 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, tilt the front end down at
a slight angle, and then lower it into position in the Base Module. Orient
it as shown in Figure 4.
2. Replace the two M4 extension screws 5at the top of the assembly.
3. Coat the threads of the two M4 x 8 mm flat-head Phillips screws 4with
Loctite 222, and replace them on the upper edge of the drive caddy
assembly.

Adding a Second Drive 9
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4. Connect the drive 0 and drive 1 RS-422 cables 3to the controller PWB.
5. Connect the drive power cable 2to the power supply connector.
6. Connect the SCSI cable connectors 1to the controller SCSI extension
cable.
7. Replace the cover plate as described in “Removing and Replacing the
Cover Plate.”
Installing the Second Tape Drive
To install the second tape drive:
1. Remove the four 6-32 sems pan-head Phillips screws 7that 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 that is located toward the front on the top
of the drive. Lift the cable clear of the cable clamps and set it aside.
4. Install the door lever on the flattened shaft at the bottom of the drive.
5. Slide the drive 6into the drive caddy assembly. Position the drive so
the threaded holes in the top and bottom of the drive are aligned with the
screw 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.

10 Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
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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.”