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2U Rackmount Component Replacement Guide, 81-81720-01, Rev A, December 2006, Made in USA.
Quantum Corporation provides this publication “as is” without warranty of any kind, either express or
implied, including but not limited to the implied warranties of merchantability or fitness for a particular
purpose. Quantum Corporation may revise this publication from time to time without notice.
COPYRIGHT ST ATEMENT
Copyright 2006 by Quantum Corporation. All rights reserved.
Your right to copy this manual is limited by copyright law. Making copies or adaptations without prior
written authorization of Quantum Corporation is prohibited by law and constitutes a punishable violation of
the law.
TRADEMARK STATEMENT
Quantum, the Quantum logo, DLT, DLTtape, and the DLTtape logo are registered trademarks of Quantum
Corporation in the U.S.A. and other countries. The DLT logo is a trademark of Quantum Corporation. LTO
and Ultrium are trademarks of HP, IBM and Quantum in the U.S.A. and other countries.
Other trademarks are the property of their respective companies.
2U Rackmount Component Replacement Guide iii
Contents
Preface ix
Chapter 1 General Procedures 1
Disconnecting and Connecting Power ........................................................... 2
Disconnecting Power ................................................................................. 2
Connecting Power ...................................................................................... 3
Sliding the 2U Rackmount Into and Out Of the Equipment Rack ............. 4
Sliding the 2U Rackmount Out of the Equipment Rack....................... 4
Sliding the 2U Rackmount Into the Equipment Rack ........................... 4
Removing and Replacing the 2U Rackmount Cover.................................... 5
Removing the Cover .................................................................................. 5
Replacing the Cover ................................................................................... 5
Chapter 2 Tape Drive 6
Removing a Tape Drive .................................................................................... 7
Installing a Tape Drive.................................................................................... 10
Contents
2U Rackmount Component Replacement Guide iv
Chapter 3 Fans 20
Determining Which Fans Have Failed.......................................................... 21
Removing a Failed Fan Module..................................................................... 22
Installing a Fan Module .................................................................................. 27
Chapter 4 Power Supply 31
Removing a Power Supply ............................................................................. 32
Installing a Power Supply............................................................................... 37
Chapter 5 Front Bezel 39
Removing the Front Bezel............................................................................... 40
Installing the Front Bezel ................................................................................ 42
Chapter 6 PCBA 43
Removing the PCBA........................................................................................ 44
Installing a PCBA ............................................................................................ 46
Chapter 7 SCSI Cable Assembly 47
Removing a SCSI Cable Assembly ................................................................ 48
Installing a SCSI Cable Assembly.................................................................. 52
Chapter 8 Rear-Panel CAT 6 Cable Connector Plate 55
Removing a CAT 6 Cable Connector Plate .................................................. 56
Installing a CAT 6 Cable Connector Plate.................................................... 58
Contents
2U Rackmount Component Replacement Guide v
Chapter 9 Ethernet Cable 61
Removing an Ethernet Cable.......................................................................... 62
Installing an Ethernet Cable ........................................................................... 65
Chapter 10 LED Cable Assembly 67
Removing the LED Cable Assembly............................................................. 68
Installing an LED Cable Assembly................................................................ 71
Appendix A SCSI ID and Connections 72
Setting the SCSI ID........................................................................................... 72
Making a Single SCSI Connection ................................................................. 73
Making SCSI Connections in a Daisy Chain................................................ 74
Appendix B Troubleshooting 76
2U Rackmount Component Replacement Guide vi
Figures
Figure 1 Power Button Location on Front Panel..................................... 2
Figure 2 Power Cable at Rear Panel.......................................................... 3
Figure 3 Thumbscrews that Secure the Unit Cover................................ 5
Figure 4 Tape Drives and Tape Drive Retaining Walls ......................... 7
Figure 5 Thumbscrews Securing the Tape Drive to the
2U Rackmount .............................................................................. 8
Figure 6 Tape Drive Cables: Top Picture Shows SCSI
Tape Drives; Bottom Picture Shows GigE Tape
Drives (SDLT 600A) ..................................................................... 9
Figure 7 General Thumbscrew Locations .............................................. 11
Figure 8 Specific Thumbscrew Locations Types................................... 12
Figure 9 DLT-S4 Cable Connections ....................................................... 13
Figure 10 SDLT 600 Cable Connections ................................................... 14
Figure 11 SDLT 600A Cable Connections ................................................ 15
Figure 12 LTO-3 Cable Connections ........................................................ 16
Figure 13 SDLT 320 Cable Connections ................................................... 17
Figure 14 Sliding the Tape Drive Into the 2U Rackmount .................... 18
Figure 15 Thumbscrews Securing Tape Drive to Unit ........................... 19
Figures
2U Rackmount Component Replacement Guide vii
Figure 16 Fan Modules and Adjacent Walls ............................................21
Figure 17 Fan Module Thumbscrew ......................................................... 23
Figure 18 Tape Drive Power Cable Assembly under Fan Module....... 24
Figure 19 Tape Drive Power Cable Assembly to Power
Supply Compartment ................................................................ 25
Figure 20 Disconnecting the Fan Module Cabling from the PCBA...... 26
Figure 21 Tape Drive Power Cable Assembly from Power Supply
Compartment.............................................................................. 28
Figure 22 Tape Drive Power Cable Assembly under Fan Module....... 29
Figure 23 Fan Module Thumbscrew ......................................................... 29
Figure 24 Power Supply and Adjacent Walls .......................................... 32
Figure 25 Tape Drive Power Cable Assembly under Fan Module....... 33
Figure 26 Tape Drive Power Cable Assembly to Power Supply
Compartment.............................................................................. 34
Figure 27 Power Supply Retaining Brackets and Ground Wire ........... 35
Figure 28 Power Supply Connector in PCBA..........................................36
Figure 29 Power Supply Above Unit ........................................................ 37
Figure 30 Bezel Location............................................................................. 40
Figure 31 Bezel Tabs, Direction of Motion ............................................... 41
Figure 32 PCBA and Fan Mounting Wall................................................. 44
Figure 33 PCBA with Cables Disconnected ............................................. 45
Figure 34 SCSI Cable Assembly................................................................. 48
Figure 35 Thumbscrews Securing Tape Drive to Unit ........................... 49
Figure 36 Fan Module Thumbscrew ......................................................... 50
Figure 37 Folded SCSI Cable...................................................................... 51
Figure 38 SCSI Connector Module ............................................................ 51
Figure 39 SCSI Cable Under Fan Mounting Flange............................... 53
Figure 40 Tape Drive Power and SCSI ID Cables Under Fan
Module......................................................................................... 53
Figure 41 Fan Module Thumbscrew ......................................................... 54
Figure 42 CAT 6 Cable Connector and Related Components ............... 56
Figures
2U Rackmount Component Replacement Guide viii
Figure 43 Disconnecting the Ethernet Cable Inside the
2U Rackmount ............................................................................ 57
Figure 44 CAT 6 Cable Connector Plate With Thumbscrews
on Outside of 2U Rackmount ................................................... 57
Figure 45 CAT 6 Cable Connector Plate on Outside of
2U Rackmount ............................................................................ 58
Figure 46 Connecting the Ethernet cable to the CAT 6 Cable
Connector Plate Inside the 2U Rackmount............................. 59
Figure 47 Ethernet Cable Connected to CAT 6 Cable
Connector Plate Outside the 2U Rackmount ......................... 60
Figure 48 Ethernet Cable and Related Components............................... 62
Figure 49 Thumbscrews Securing Tape Drive to Unit ........................... 63
Figure 50 Tape Drive Cable Connections................................................. 63
Figure 51 Fan Module Thumbscrew ......................................................... 64
Figure 52 Ethernet Cable in Ethernet Connector Assembly
on Inside of 2U Rackmount ...................................................... 65
Figure 53 Ethernet Cable Through Fan Mounting Wall; Fan
Module Thumbscrew................................................................. 66
Figure 54 LED Cable Assembly and PCBA.............................................. 68
Figure 55 LED Cable Assembly Connections to Mounting
Brackets........................................................................................ 69
Figure 56 Power Switch Mounting Bracket ............................................. 70
Figure 57 SCSI ID Switch on Back of Unit................................................ 73
Figure 58 Connecting SCSI as a Single Unit............................................. 74
Figure 59 Connecting SCSI in a Daisy Chain........................................... 75
2U Rackmount Component Replacement Guide ix
Preface
Purpose and Scope
This document describes how to remove and replace tape drives and
components in the 2U Rackmount.
Audience
This guide serves customers, engineers, and technicians who will be
replacing the above components.
Document Organization
This guide includes the following chapters:
• Chapter 1, General Procedures
describes general procedures you
need to follow to replace any components in the 2U Rackmount.
• Chapter 2, Tape Drive
describes how to replace a tape drive.
• Chapter 3, Fans
describes how to determine which fan module has
failed and how to replace a fan module.
• Chapter 4, Power Supply
describes how to replace the power supply.
• Chapter 5, Front Bezel
tells how the front bezel becomes damaged
and describes how to replace it.
• Chapter 6, PCBA
tells how to replace the PCBA.
• Chapter 7, SCSI Cable Assembly
describes how to replace a SCSI
cable assembly.
Preface
2U Rackmount Component Replacement Guide x
• Chapter 8, Rear-Panel CAT 6 Cable Connector Plate describes how to
replace the CAT 6 cable connector plate in units that use an
SDLT 600A tape drive.
• Chapter 9, Ethernet Cable
describes how to replace an Ethernet cable
in units that use an SDLT 600A tape drive.
• Chapter 10, LED Cable Assembly
describes how to replace an LED
cable assembly.
• Appendix A, SCSI ID and Connections
describes how to change the
SCSI ID on the 2U Rackmount and how to connect the tape drives as a
single device and as a daisy chain.
• Appendix B, Troubleshooting
describes how to troubleshoot basic
2U Rackmount issues.
Notational Conventions
This manual uses the following conventions:
This manual uses the following:
• Right side — Refers to the right side as you face the component being
described.
• Left side — Refers to the left side as you face the component being
described.
Note: Notes emphasize important information related to the main
topic.
Tech Tip: Tech Tips provide technical information which may be
helpful in performing the procedure.
Caution: Cautions indicate potential hazards to equipment and are
included to prevent damage to equipment.
Warning: Warnings indicate potential hazards to personal safety and
are included to prevent injury.
2U Rackmount Component Replacement Guide xi
Related Documents
Refer to the publications in this section for further information:
Refer to the appropriate product manuals for information about your
tape drive and cartridges.
SCSI-2 Specification
0
The SCSI-2 communications specification is the proposed American
National Standard for information systems, dated March 9, 1990. Copies
may be obtained from:
Global Engineering Documents
15 Inverness Way, East
Englewood, CO 80112
(800) 854-7179 or (303) 397-2740
Document No. Document Title Document Description
81-81235-xx 2U Rackmount Quick
Start Guide
Describes how to set up a
2U Rackmount in an
equipment rack, and how
to install tape drives into
the 2U Rackmount.
81-81209-xx 2U Rackmount Rail
Installation Guide
Describes how to install
rails onto the
2U Rackmount and how to
mount the rail slides in the
equipment cabinet.
81-81234-xx 2U Rackmount Read
This First Card
An important notice about
using the
Power button.
Preface
2U Rackmount Component Replacement Guide xii
Contacts
Quantum company contacts are listed below.
Quantum Corporate Headquarters
0
To order documentation on the 2U Rackmount or other products contact:
Quantum Corporation
P.O. Box 57100
Irvine, CA 92619-7100
(949) 856-7800
(800) 284-5101
Technical Publications
0
To comment on existing documentation send e-mail to:
doc-comments@quantum.com
Quantum Home Page 0
Visit the Quantum home page at:
http://www.quantum.com
Getting More Information or
Help
More information about this product is available on the Service and
Support website at
www.quantum.com/support. The Service and Support
Website contains a collection of information, including answers to
frequently asked questions (FAQs). You can also access software,
firmware, and drivers through this site.
For further assistance, or if training is desired, contact Quantum:
QuantumTechnical Assistance Center in the USA: 800-284-5101
For additional contact information: www.quantum.com/support
To open a Service Request: www.quantum.com/esupport
For the most updated information on Quantum Global Services, please
visit:
www.quantum.com/support.
2U Rackmount Component Replacement Guide 1
Chapter 1
1General Procedures
To perform any part replacement in the 2U Rackmount, you must know
how to perform the following procedures that are part of all other
procedures:
• Disconnecting and Connecting Power
• Sliding the 2U Rackmount Into and Out Of the Equipment Rack
• Sliding the 2U Rackmount Into and Out Of the Equipment Rack
This chapter describes how to perform these tasks.
Chapter 1 General Procedures
Disconnecting and Connecting Power
2U Rackmount Component Replacement Guide 2
Disconnecting and Connecting Power
2U Rackmount components may pose an electric shock hazard.
Disconnecting Power 1
To disconnect power to the 2U Rackmount, follow these steps:
1 Turn off power to the 2U Rackmount by pressing and holding the
power button on the front panel for three seconds (see figure 1
).
Figure 1 Power Button
Location on Front Panel
2 Disconnect the 2U Rackmount power cable at the rear panel (see
figure 2
).
Warning:
Electric Shock Hazard.
Voltage or current sufficient to cause shock, burn, or death
may be present. To reduce exposure to electric shock,
follow these precautions:
- Disconnect power from the 2U Rackmount before
performing any service.
- Do not disassemble the power supply.
- Replace the power supply unit as a whole.
Power LED
Power Button
Fan Failure LED
Chapter 1 General Procedures
Disconnecting and Connecting Power
2U Rackmount Component Replacement Guide 3
Figure 2 Power Cable at Rear
Panel
Connecting Power 1
At the end of any service procedure, you must re-connect power to the
2U Rackmount. Follow these steps:
1 Connect the 2U Rackmount power cable at the rear panel (see
figure 2
).
2 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second (see figure 1
).
The power LED, unit fans, and power supply fans turn on.
Note: An illuminated fan failure LED (the left LED on the front
panel) indicates a fan failure (see figure 1
). If you have a
fan failure, see chapter 3, Fans
.
Chapter 1 General Procedures
Sliding the 2U Rackmount Into and Out Of the Equipment Rack
2U Rackmount Component Replacement Guide 4
Sliding the 2U Rackmount Into and Out Of the Equipment
Rack
You cannot replace any part in the 2U Rackmount while it is still in the
equipment rack. To make the 2U Rackmount available, slide it out of the
equipment rack into the service position.
Sliding the 2U
Rackmount Out of the
Equipment Rack 1
To slide the 2U Rackmount out of the equipment rack:
1 Loosen the thumbscrews that secure the 2U Rackmount to the
equipment rack.
2 Gripping the 2U Rackmount handles, pull outward until the 2U
Rackmount stops. This is the service position. Make sure that the lock
in the slide engages.
When the 2U Rackmount stops sliding, it should be far enough from
the equipment rack to allow easy access to the 2U Rackmount rear
panel.
Sliding the 2U
Rackmount Into the
Equipment Rack 1
An extended unit poses a safety hazard. When you have completed
service on the 2U Rackmount, follow these steps to return it to the
equipment rack:
1 Press the lock in the slide to disengage it, and then push the
2U Rackmount toward the equipment rack until the 2U Rackmount
touches the equipment rack.
2 Engage and tighten the thumbscrews that secure the 2U Rackmount
to the equipment rack.
Caution: To avoid damaging the front bezel, do not grasp the front
bezel when moving the 2U Rackmount; instead, use the
handles on either side of the unit to move it.
Chapter 1 General Procedures
Removing and Replacing the 2U Rackmount Cover
2U Rackmount Component Replacement Guide 5
Removing and Replacing the 2U Rackmount Cover
Before you can access any 2U Rackmount components, you must remove
the 2U Rackmount cover. Before you complete any service procedure,
you must replace the 2U Rackmount cover.
Removing the Cover 1
To remove the cover:
1 Loosen the two captive thumbscrews that secure the top cover (see
figure 3
).
Figure 3 Thumbscrews that
Secure the Unit Cover
2 Slide the cover forward, then upward, to remove it. Set the cover
aside for re-use.
Replacing the Cover 1
To replace the cover:
1 Slide the top cover into place.
2 Tighten the top cover thumbscrews to secure the 2U Rackmount
cover (see figure 3
).
2U Rackmount Component Replacement Guide 6
Chapter 2
2Tape Drive
You may want to upgrade one or both tape drives in the 2U Rackmount,
or you may need to replace a tape drive in the unit. This chapter describes
how to perform the following tasks:
• Removing a Tape Drive
• Installing a Tape Drive
Figure 4 shows the tape drive locations in the 2U Rackmount. It also
shows the location of other 2U Rackmount components mentioned in the
procedure.
Chapter 2 Tape Drive
Removing a Tape Drive
2U Rackmount Component Replacement Guide 7
Figure 4 Tape Drives and T ape
Drive Retaining Walls
Removing a Tape Drive
To remove a tape drive from the 2U Rackmount:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2.
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
Tape Drives
Tape Drive Retaining Walls
Chapter 2 Tape Drive
Removing a Tape Drive
2U Rackmount Component Replacement Guide 8
5 Remove the two thumbscrews securing the tape drive to the tape
drive retaining wall (see figure 4
). Set the two thumbscrews aside for
re-use when installing a replacement tape drive.
Figure 5 Thumbscrews
Securing the Tape Drive to
the 2U Rackmount
6 Pull the tape drive forward slightly, and then lift the tape drive out of
the 2U Rackmount. Place the tape drive on the top of the 2U
Rackmount.
7 Disconnect the all the cables from the rear panel of the tape drive.
Figure 6
shows examples; your tape drive may have these cables in
slightly different locations. See the following figures for specific cable
locations for each drive type:
•DLT-S4, see figure 9
• SDLT 600, see figure 10
• SDLT 600A, see figure 11
• LTO-3, see figure 12
• SDLT 320, see figure 13
Thumbscrews
Chapter 2 Tape Drive
Removing a Tape Drive
2U Rackmount Component Replacement Guide 9
Figure 6 Tape Drive Cables:
Top Picture Shows SCSI Tape
Drives; Bottom Picture Shows
GigE Tape Drives (SDLT 600A)
8 Remove the two thumbscrews from the side of the tape drive that
was closest to the outside of the 2U Rackmount (see figure 7
and
figure 8
). Set the two thumbscrews aside for re-use when installing a
replacement tape drive.
Note: These two thumbscrews are used as standoffs. They do
not attach the drive to the chassis.
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 10
Installing a Tape Drive
To install a tape drive into the 2U Rackmount:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2.
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
5 Install two thumbscrews into the side of the tape drive that will be
located next to the outer wall of the 2U Rackmount (see figure 7
and
figure 8
). Hand-tighten the thumbscrews.
Caution: To ensure proper tape drive operation, make sure its SCSI
ID is unique (see Setting the SCSI ID
on page 72).
Note: Extra thumbscrews are stored inside the 2U Rackmount
(see figure 7
for location). Use the type appropriate for
your unit: SDLT 320 tape drives use 6-32 (silver)
thumbscrews; all other tape drives use M3 (black)
thumbscrews.
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 11
Figure 7 General Thumbscrew
Locations
Extra thumbscrews
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 12
Figure 8 Specific Thumbscrew
Locations Types
6 Place the tape drive on the top of the 2U Rackmount unit. Connect
the tape drive power and interface cables to the tape drive rear panel.
Follow the specific instructions for making these connections for each
drive type as illustrated in the following figures:
•DLT-S4, see figure 9
• SDLT 600, see figure 10
• SDLT 600A, see figure 11
• LTO-3, see figure 12
• SDLT 320, see figure 13
LTO-3 (M3)
SDLT 320 (6-32)
SDLT 600/600A (M3)
DLT-S4 (M3)
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 13
Figure 9 DLT-S4 Cable
Connections
DL T-S4:
Remove all jumpers from the SCSI ID pins on the back of the
tape drive. Place the TERMPWR jumper on the two left-most SCSI ID
pins. Place the SCSI ID Enable jumper on the two pins just to the right
of the TERMPWR jumper. Attach the unlabeled 8-pin SCSI ID cable
with six multi-colored wires to the eight right-most pins on the tape
drive. Ensure that the brown wire is connected to the upper right pin.
TERMPWR
Jumper
SCSI ID Enable
Jumper
Brown wire
location
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 14
Figure 10 SDLT 600 Cable
Connections
SDLT 600:
Remove all jumpers from the SCSI ID pins on the back of
the tape drive. Place a jumper on the two left-most SCSI ID pins.
Attach the unlabeled 8-pin SCSI ID cable with six multi-colored wires
to the eight right-most pins on the tape drive. Ensure that the brown
wire is connected to the upper right pin.
Jumper
Brown wire
location
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 15
Figure 11 SDLT 600A Cable
Connections
SDLT 600A:
Connect the Ethernet cable into the Gigabit Ethernet
(GigE) connector on the back of the tape drive.
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 16
Figure 12 LTO-3 Cable
Connections
LTO-3: Remove all jumpers from the SCSI ID pins on the back of the
tape drive. Connect the SCSI ID cable labeled “LTO1/LTO2-L/
LTO3” so that the brown wire is connected to the upper left pin.
Brown wire
location
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 17
Figure 13 SDLT 320 Cable
Connections
SDLT 320: Remove all jumpers from the SCSI ID pins on the back of
the tape drive. Place a jumper on the two left-most SCSI ID pins.
Attach the unlabeled 8-pin SCSI ID cable with six multi-colored wires
to the eight right-most pins on the tape drive. Ensure that the brown
wire is connected to the upper right pin.
Brown wire
location
Jumper
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 18
7 Lower the tape drive into the slot in the 2U Rackmount, sliding the
thumbscrews into the openings in the outer wall of the 2U
Rackmount (see figure 14
). Slide the tape drive all the way into the 2U
Rackmount until it stops.
Figure 14 Sliding the Tape
Drive Into the 2U Rackmount
Chapter 2 Tape Drive
Installing a Tape Drive
2U Rackmount Component Replacement Guide 19
8 Secure the tape drive to the 2U Rackmount by installing two
thumbscrews through the bottom set of mounting holes in the inner
wall of the 2U Rackmount and into the tape drive (see figure 15
). Use
the correct thumbscrew type (indicated in figure 8
). Hand-tighten the
thumbscrews.
Figure 15 Thumbscrews
Securing Tape Drive to Unit
9 Replace the 2U Rackmount cover (see Replacing the Cover on
page 5).
10 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
11 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
12 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
13 Turn on any peripheral devices you turned off earlier.
14 Turn on the host computer.
Thumbscrews
2U Rackmount Component Replacement Guide 20
Chapter 3
3Fans
This chapter describes how to perform the folliwing tasks:
• Determining Which Fans Have Failed
• Removing a Failed Fan Module
• Installing a Fan Module
Figure 16
shows the fan module locations in the unit. It also shows the
location of other unit components mentioned in the procedure.
Chapter 3 Fans
Determining Which Fans Have Failed
2U Rackmount Component Replacement Guide 21
Figure 16 Fan Modules and
Adjacent Walls
Determining Which Fans Have Failed
The fans in the 2U Rackmount unit are actually two-fan modules. When
the fan failure LED on the front panel turns on, one or both of the fan
modules in the 2U Rackmount has failed. However, the LED does not
indicate which fan module has failed, or if both fan modules have failed.
To determine which fan module has failed, follow these steps:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2
Tape Drives
Fan Mounting Wall
Fan Modules
Power Supply
Compartment Walls
Chapter 3 Fans
Removing a Failed Fan Module
2U Rackmount Component Replacement Guide 22
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount top cover (see Removing the Cover
on
page 5).
5 Reconnect the 2U Rackmount power cable at the rear panel.
6 Turn on power to the 2U Rackmount.
7 Place your hand immediately behind each fan module.
If there is no air flow, the fan module has failed and should be
replaced.
Removing a Failed Fan Module
To remove a fan module from the 2U Rackmount unit, follow these steps:
1 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2
2 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
3 Remove the 2U Rackmount top cover (see Removing the Cover
on
page 5).
Chapter 3 Fans
Removing a Failed Fan Module
2U Rackmount Component Replacement Guide 23
4 Remove the thumbscrew securing the fan module to the unit (see
figure 17
). Set the thumbscrew aside for re-use.
Figure 17 Fan Module
Thumbscrew
5 Disconnect the tape drive power cable assembly from the rear panel
of the tape drive that sits in front of the failed fan module.
Note: If you have an SDLT 600A, the SCSI cable shown in many
of the following pictures will not be present. Instead, there
will be an Ethernet cable.
Above: SCSI drives.
Left: Ethernet drives.
Chapter 3 Fans
Removing a Failed Fan Module
2U Rackmount Component Replacement Guide 24
6 Move the tape drive power cable assembly out of the way as follows:
a Gently lift the fan module upward just a little.
b While holding the fan module up, pull the tape drive power cable
assembly through a slot in the fan mounting wall and under the
fan module (see figure 18
).
Figure 18 Tape Drive Power
Cable Assembly under Fan
Module
c Allow the fan module to return to its original position.
d Pull the tape drive power cable assembly through the opening in
the power supply compartment wall (the opening is near the fan
mounting wall) (see figure 19
).
Note: Be sure to align the power cable connector so that it
passes through the slot easily.
Caution: The fan mounting flange is sharp. To avoid
personal injury or damaging the power cable
assembly or connector, apply only light pressure
when pulling the cable through the fan mounting
wall.
Chapter 3 Fans
Removing a Failed Fan Module
2U Rackmount Component Replacement Guide 25
Figure 19 Tape Drive Power
Cable Assembly to Power
Supply Compartment
e Lay the tape drive power cable assembly on top of the power
supply.
7 Disconnect the fan module cabling from the PCBA (see figure 20
).
8 Pull the fan module cabling (front to back) through the fan mounting
wall and through the power supply retaining wall (see figure 20
). Lay
the cable in the open area behind the fan module.
Chapter 3 Fans
Removing a Failed Fan Module
2U Rackmount Component Replacement Guide 26
Figure 20 Disconnecting the
Fan Module Cabling from the
PCBA
9 Lift the fan module vertically out of the 2U Rackmount.
Chapter 3 Fans
Installing a Fan Module
2U Rackmount Component Replacement Guide 27
Installing a Fan Module
To install a fan module in the 2U Rackmount unit, follow these steps:
1 Lower the fan module vertically into the 2U Rackmount.
2 Push the fan module cabling through the power supply retaining
wall and (back to front) through the fan mounting wall.
3 Connect the fan module cabling to the connectors on the PCBA.
Tech Tip: Before pushing the fan module cabling through the
fan mounting wall, bend the cable about 90°, 4 to 5 cm
(1.5 to 2 inches) above the fan module connectors, and
then align the connectors in the fan mounting wall
opening.
Note: There are six connectors on the PCBA — choose any two
on each side per fan module.
Chapter 3 Fans
Installing a Fan Module
2U Rackmount Component Replacement Guide 28
4 Move the tape drive power cable assembly from the power supply
compartment to the tape drive rear panel as follows:
a Gently pull the tape drive power cable assembly through the
opening in the power supply compartment wall (see figure 21
).
Figure 21 Tape Drive Power
Cable Assembly from Power
Supply Compartment
b Gently lift the fan module upward just a little.
c While holding the fan module up, pull the tape drive power cable
assembly under the fan module and through the slot in the fan
mounting wall (see figure 22
).
Note: Be sure to align the power cable connector so that it
passes through the slot easily.
Chapter 3 Fans
Installing a Fan Module
2U Rackmount Component Replacement Guide 29
Figure 22 Tape Drive Power
Cable Assembly under Fan
Module
5 Seat the fan module in the unit, and then install the thumbscrew
securing the fan module to the unit.
Figure 23 Fan Module
Thumbscrew
Chapter 3 Fans
Installing a Fan Module
2U Rackmount Component Replacement Guide 30
6 Connect the tape drive power cable assembly to the rear panel of the
tape drive.
7 Replace the 2U Rackmount cover (see Replacing the Cover
on
page 5).
8 Slide the unit back into the equipment rack and secure it to the rack
(see Sliding the 2U Rackmount Into the Equipment Rack
on page 4).
9 Connect the unit power cable at the rear panel (see Connecting Power
on page 3).
10 Turn on power to the unit by pressing and holding the power button
on the front panel for one second.
11 Turn on any peripheral devices you turned off earlier.
12 Turn on the host computer.
2U Rackmount Component Replacement Guide 31
Chapter 4
4Power Supply
The 2U Rackmount unit contains a single power supply that connects to
both tape drives in the unit, supplying them with power. If the unit
power supply fails, neither tape drive operates. You must replace the
power supply. This chapter describes how to perform these tasks:
• Removing a Power Supply
• Installing a Power Supply
Figure 24 shows the power supply location in the unit. It also shows the
location of other unit components mentioned in the procedure.
Warning:
Electric Shock Hazard.
Voltage or current sufficient to cause shock, burn, or death
may be present on the power supply. To reduce exposure
to electric shock:
- Disconnect power from the 2U Rackmount before
performing any service.
- Do not disassemble the power supply.
- Replace the power supply unit as a whole.
Chapter 4 Power Supply
Removing a Power Supply
2U Rackmount Component Replacement Guide 32
Figure 24 Power Supply and
Adjacent Walls
Removing a Power Supply
To remove a power supply from the 2U Rackmount:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2.
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
5 Remove the thumbscrew securing the fan module to the unit. Set the
thumbscrew aside for re-use.
Power supply
Power Supply Compartment
Walls
Fan Mounting Wall
PCBA
Rear retaining bracket
Ground wire
Front retaining bracket
Chapter 4 Power Supply
Removing a Power Supply
2U Rackmount Component Replacement Guide 33
6 Disconnect the tape drive power cable assembly from the rear panel
of all tape drives installed in the 2U Rackmount as follows:
a Gently lift the fan module upward just a little.
b While holding the fan module up, pull the tape drive power cable
assembly through a slot in the fan mounting wall and under the
fan module (see figure 25
).
Figure 25 Tape Drive Power
Cable Assembly under Fan
Module
c Allow the fan module to return to its original position.
d Pull the tape drive power cable assembly through the opening in
the power supply compartment wall (the opening is near the fan
mounting wall (see figure 26
).
Note: Be sure to align the power cable connector so that it
passes through the slot easily.
Caution: The fan mounting flange is sharp. To avoid
personal injury or damaging the power cable
assembly or connector, apply only light pressure
when pulling the cable through the fan mounting
wall.
Chapter 4 Power Supply
Removing a Power Supply
2U Rackmount Component Replacement Guide 34
Figure 26 Tape Drive Power
Cable Assembly to Power
Supply Compartment
e Lay the tape drive power cable assembly on top of the power
supply.
Chapter 4 Power Supply
Removing a Power Supply
2U Rackmount Component Replacement Guide 35
7 Remove the thumbscrews from the two power supply retaining
brackets, and then remove the retaining brackets. Lay the ground
wire toward the rear of the unit (see figure 27
). Set the thumbscrews
and retaining brackets aside for re-use.
Figure 27 Power Supply
Retaining Brackets and Ground
Wire
Ground wire
Rear retaining bracket
Front retaining bracket
Chapter 4 Power Supply
Removing a Power Supply
2U Rackmount Component Replacement Guide 36
8 Depress the latch on the power supply connector and disconnect the
power supply connector from the PCBA (see figure 28
). You may
need to wiggle the connector slightly from side to side to loosen it.
Figure 28 Power Supply
Connector in PCBA
9 Push the power supply slightly forward, and then lift it upward.
10 Pull the PCBA power cable assembly through the fan mounting wall
from the PCBA, and then remove the power supply from the unit.
Caution: Do not pull on the wires when removing the cable.
Note: Be sure to align the power cable connector so that it passes
through the slot easily.
Caution: The fan mounting flange is sharp. To avoid personal
injury or damaging the power cable assembly or
connector, apply only light pressure when pulling the
cable through the fan mounting wall.
Power Supply
Connector
PCBA
Latch
Chapter 4 Power Supply
Installing a Power Supply
2U Rackmount Component Replacement Guide 37
Installing a Power Supply
To install a power supply in the 2U Rackmount unit:
1 Holding the power supply above the power supply compartment,
pull the PCBA power cable assembly through the fan mounting wall
from the power supply to the PCBA (see figure 29
).
Figure 29 Power Supply Above
Unit
2 Lower the power supply into its compartment, and then push the
power supply toward the rear of the unit until it clicks into place.
3 Install the power supply retaining brackets, securing each retaining
bracket with a thumbscrew. Be sure to attach the ground wire to the
front retaining bracket (see figure 27
).
4 Connect the PCBA power cable assembly to the PCBA.
5 Thread the tape drive power cable assemblies under the fan modules
to the tape drives as follows:
a Pull the tape drive power cable assembly through the opening in
the power supply compartment wall.
b Gently lift the fan module upward just a little.
Chapter 4 Power Supply
Installing a Power Supply
2U Rackmount Component Replacement Guide 38
c While holding the fan module up, pull the tape drive power cable
assembly under the fan module and through the slot in the fan
mounting wall.
6 Seat the fan module in the unit, and then install the thumbscrew
securing the fan module to the unit.
7 Connect the tape drive power cable assembly to the rear panel of the
tape drive.
8 Replace the 2U Rackmount cover (see Replacing the Cover
on
page 5).
9 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
10 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
11 Turn on power to the unit by pressing and holding the power button
on the front panel for one second.
12 Turn on any peripheral devices you turned off earlier.
13 Turn on the host computer.
Note: Be sure to align the power cable connector so that it
passes through the slot easily.
Caution: The fan mounting flange is sharp. To avoid
personal injury or damaging the power cable
assembly or connector, apply only light pressure
when pulling the cable through the fan mounting
wall.
2U Rackmount Component Replacement Guide 39
Chapter 5
5Front Bezel
The front bezel is a flat panel that resides in the front center of the
2U Rackmount. It has openings for the power button, the power indicator
LED, and the fan failure LED.
This chapter describes how to replace the front bezel by performing the
following tasks:
• Removing the Front Bezel
• Installing the Front Bezel
Figure 30 shows the bezel location.
Caution: To avoid damaging the front bezel, do not grasp the front
bezel when moving the 2U Rackmount; instead, use the
handles on either side of the unit to move it.
Chapter 5 Front Bezel
Removing the Front Bezel
2U Rackmount Component Replacement Guide 40
Figure 30 Bezel Location
Removing the Front Bezel
To remove the front bezel:
1 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2.
2 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
3 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
Front Bezel
Chapter 5 Front Bezel
Removing the Front Bezel
2U Rackmount Component Replacement Guide 41
4 Release the top edge of the bezel from the chassis as follows:
a With one hand grip the front bezel top and bottom edges.
b With the other hand, release the two top tabs that hold the bezel
to the chassis by applying light pressure toward the center of the
bezel (see figure 31
).
Figure 31 Bezel Tabs,
Direction of Motion
c While applying pressure to the tabs pull gently on the bezel top
edge to move it away from the chassis.
5 Release the bottom edge of the bezel by repeating step 4
for the
bottom tabs and edge.
Bezel Tabs
Chapter 5 Front Bezel
Installing the Front Bezel
2U Rackmount Component Replacement Guide 42
Installing the Front Bezel
To install the front bezel:
1 Position the bezel so that the LED light pipes, power button, and tabs
align with the openings in the chassis.
2 Push the bezel into the chassis until it clicks in place.
3 Replace the 2U Rackmount cover (see Replacing the Cover
on
page 5).
4 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
5 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
6 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
2U Rackmount Component Replacement Guide 43
Chapter 6
6PCBA
The PCBA is a printed circuit board that resides in the compartment
between the two tape drives. This chapter describes how to perform the
following tasks:
• Removing the PCBA
• Installing a PCBA
Figure 32 shows the location of the PCBA in the unit. It also shows the
location of other unit components mentioned in the procedure.
Chapter 6 PCBA
Removing the PCBA
2U Rackmount Component Replacement Guide 44
Figure 32 PCBA and Fan
Mounting Wall
Removing the PCBA
To remove the PCBA, follow these steps:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2.
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
5 Depress the latch on the power supply connector and disconnect the
power supply connector from the PCBA (see figure 33
). You may
need to wiggle the connector slightly from side to side to loosen it.
PCBA
Fan Mounting Wall
Chapter 6 PCBA
Removing the PCBA
2U Rackmount Component Replacement Guide 45
6 Disconnect the four fan module cable connectors (two per side).
7 Disconnect the LED cable assembly.
Figure 33 PCBA with Cables
Disconnected
8 Remove the two thumbscrews that secure the PCBA to the
2U Rackmount. Set the thumbscrews aside for re-use.
9 Lift the PCBA out of the unit.
Caution: Do not pull on the wires when removing the cables in
steps 5
through 6.
LED cable
assembly
PCBA
Thumbscrews
Power
supply
connector
Fan module
cable
connectors
Chapter 6 PCBA
Installing a PCBA
2U Rackmount Component Replacement Guide 46
Installing a PCBA
To install a PCBA (see figure 33 for component locations):
1 Connect the following cables to the PCBA:
•LED power cable
• Four fan module cable connectors (two per side).
2 Seat the PCBA in the 2U Rackmount, and then install the two
thumbscrews to secure the PCBA to the 2U Rackmount.
3 Connect the PCBA power cable assembly.
4 Replace the 2U Rackmount cover (see Replacing the Cover
on
page 5).
5 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
6 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
7 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
8 Turn on any peripheral devices you turned off earlier.
9 Turn on the host computer.
Caution: The PCBA is an ESD-sensitive device. Take proper ESD
precautions when handling the PCBA.
Note: It is easier to connect these cables before attaching the
PCBA to the unit.
2U Rackmount Component Replacement Guide 47
Chapter 7
7SCSI Cable Assembly
The SCSI cable assembly includes the SCSI cable and connector, the SCSI
ID cable and connectors, and the SCSI connector module at the rear of the
unit.
This chapter describes how to perform the following tasks:
• Removing a SCSI Cable Assembly
• Installing a SCSI Cable Assembly
Figure 34 shows the location of the SCSI cable assembly in the unit. It also
shows other unit components affected by this procedure.
Chapter 7 SCSI Cable Assembly
Removing a SCSI Cable Assembly
2U Rackmount Component Replacement Guide 48
Figure 34 SCSI Cable
Assembly
Removing a SCSI Cable Assembly
To remove a SCSI cable assembly from the 2U Rackmount:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2.
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
SCSI Cables
SCSI Connector
Modules
SCSI ID Cables
Chapter 7 SCSI Cable Assembly
Removing a SCSI Cable Assembly
2U Rackmount Component Replacement Guide 49
5 Remove the tape drive as follows:
a Remove the two thumbscrews securing the tape drive to the tape
drive retaining wall (see figure 35
). Set the thumbscrews aside for
re-use when installing a replacement tape drive.
Figure 35 Thumbscrews
Securing Tape Drive to Unit
b Pull the tape drive forward slightly, and then lift the tape drive
out of the unit. Lay the tape drive on the top of the unit.
c Disconnect the SCSI cable and the SCSI ID cable from the rear
panel of the tape drive. For specific pictures of cable locations, see
the following:
•DLT-S4, see figure 9
on page 13
• SDLT 600, see figure 10
on page 14
• SDLT 600A, see figure 11
on page 15
• LTO-3, see figure 12
on page 16
• SDLT 320, see figure 13
on page 17
6 Remove the thumbscrew securing the fan module to the unit (see
figure 36
). Set the thumbscrew aside for re-use.
Thumbscrews
Chapter 7 SCSI Cable Assembly
Removing a SCSI Cable Assembly
2U Rackmount Component Replacement Guide 50
Figure 36 Fan Module
Thumbscrew
7 Gently lift the fan module upward just a little.
8 Pull the SCSI cable and the SCSI ID cable, and the tape drive power
cable assembly through the fan mounting wall opening.
Tech Tip: The SCSI cable connector is too wide to fit directly
through the opening in the fan mounting wall. Fold
the SCSI cable so that the connector is 90° to the cable
(see figure 37
). Carefully slide the SCSI cable and
connector so that the connector fits sideways through
the opening.
Caution: The fan mounting flange is sharp. To avoid personal
injury or damaging the power cable assembly or
connector, apply only light pressure when pulling the
cable through the fan mounting wall.
Chapter 7 SCSI Cable Assembly
Removing a SCSI Cable Assembly
2U Rackmount Component Replacement Guide 51
Figure 37 Folded SCSI Cable
9 Remove the two thumbscrews that secure the SCSI connector module
to the rear of the unit (see figure 38
). Set the thumbscrews aside for
re-use.
Figure 38 SCSI Connector
Module
10 Remove the SCSI cable assembly from the unit.
Thumbscrews
Chapter 7 SCSI Cable Assembly
Installing a SCSI Cable Assembly
2U Rackmount Component Replacement Guide 52
Installing a SCSI Cable Assembly
To install a SCSI cable assembly in the 2U Rackmount unit:
1 Make sure the 2U Rackmount, the host computer, all peripheral
devices are turned off.
2 Position the SCSI connector module at the rear of the unit, and then
install two thumbscrews to secure the module to the unit (see
figure 38
).
3 Gently lift the fan module upward just a little.
4 Pull the SCSI cable through the fan mounting wall opening (see
figure 39
).
Tech Tip: The SCSI cable connector is too wide to fit directly
through the opening in the fan mounting wall. Fold
the SCSI cable so that the connector is 90° to the cable
(see figure 37
). Carefully slide the SCSI cable and
connector so that the connector fits sideways through
the opening.
Caution: The fan mounting flange is sharp. To avoid personal
injury or damaging the power cable assembly or
connector, apply only light pressure when pulling the
cable through the fan mounting wall.
Chapter 7 SCSI Cable Assembly
Installing a SCSI Cable Assembly
2U Rackmount Component Replacement Guide 53
Figure 39 SCSI Cable Under
Fan Mounting Flange
5 Pull the SCSI ID cable through the fan mounting wall (see figure 40).
Figure 40 Tape Drive Power
and SCSI ID Cables Under Fan
Module
6 Seat the fan module in the unit, and then install the thumbscrew
securing the fan module to the unit (see figure 41
).
Chapter 7 SCSI Cable Assembly
Installing a SCSI Cable Assembly
2U Rackmount Component Replacement Guide 54
Figure 41 Fan Module
Thumbscrew
7 Install the tape drive per instructions in Installing a Tape Drive on
page 10.
8 Replace the 2U Rackmount cover (see Replacing the Cover
on
page 5).
9 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
10 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
11 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
12 Turn on any peripheral devices you turned off earlier.
13 Turn on the host computer.
2U Rackmount Component Replacement Guide 55
Chapter 8
8Rear-Panel CAT 6
Cable Connector Plate
The rear-panel CAT 6 cable connector plate is located on the back wall of
the 2U Rackmount. There is one CAT 6 cable connector plate for each
SDLT 600A tape drive installed. The CAT 6 cable connector plate contains
two Gigabit Ethernet (GigE) connectors, one on the inside and one on the
outside. The GigE connector on the inside connects to the Ethernet cable
attached to the tape drive. The GigE connector on the outside connects
the tape drive to the host or router.
This chapter describes how to perform the following tasks:
• Removing a CAT 6 Cable Connector Plate
• Installing a CAT 6 Cable Connector Plate
This chapter assumes that you are replacing only the CAT 6 cable
connector plate. If you are also installing an Ethernet cable or a tape
drive, see chapter 2,
Tape Drive and chapter 9, Ethernet Cable for further
instructions.
Figure 42
shows the location of the SCSI cable assembly in the unit. It also
shows other unit components affected by this procedure.
Chapter 8 Rear-Panel CAT 6 Cable Connector Plate
Removing a CAT 6 Cable Connector Plate
2U Rackmount Component Replacement Guide 56
Figure 42 CAT 6 Cable
Connector and Related
Components
Removing a CAT 6 Cable Connector Plate
To remove an Ethernet cable assembly from the 2U Rackmount:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2).
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
5 Disconnect the Ethernet cable from the GigE connector of the CAT 6
cable connector on the inside of the 2U Rackmount (see figure 43
).
Ethernet cable
CAT 6 cable connector
plate
Tape drive
GigE connector
Chapter 8 Rear-Panel CAT 6 Cable Connector Plate
Removing a CAT 6 Cable Connector Plate
2U Rackmount Component Replacement Guide 57
Figure 43 Disconnecting the
Ethernet Cable Inside the
2U Rackmount
6 Disconnect the Ethernet cable from the GigE connector of the CAT 6
cable connector plate on the outside of the 2U Rackmount (see
figure 44
).
7 Remove the two thumbscrews that secure the CAT 6 cable connector
plate to the 2U Rackmount (see figure 44
). Set the thumbscrews aside
for re-use.
Figure 44 CAT 6 Cable
Connector Plate With
Thumbscrews on Outside of
2U Rackmount
8 Remove the CAT 6 cable connector plate from the unit.
GigE
connector
Ethernet
cable
Chapter 8 Rear-Panel CAT 6 Cable Connector Plate
Installing a CAT 6 Cable Connector Plate
2U Rackmount Component Replacement Guide 58
Installing a CAT 6 Cable Connector Plate
To install a CAT 6 connector plate in the 2U Rackmount:
1 Make sure the 2U Rackmount, the host computer, and all peripheral
devices are turned off.
2 Position the CAT 6 cable connector plate at the rear of the
2U Rackmount. Install two thumbscrews to secure it in place (see
figure 45
).
Figure 45 CAT 6 Cable
Connector Plate on Outside of
2U Rackmount
Chapter 8 Rear-Panel CAT 6 Cable Connector Plate
Installing a CAT 6 Cable Connector Plate
2U Rackmount Component Replacement Guide 59
3 Connect the Ethernet cable on the inside of the 2U Rackmount (which
is connected to the tape drive) to the GigE connector on the CAT 6
cable connector plate (see figure 46
).
Figure 46 Connecting the
Ethernet cable to the CAT 6
Cable Connector Plate Inside
the 2U Rackmount
4 Connect one end of an Ethernet cable to the CAT 6 cable connector
plate on the outside of the 2U Rackmount (see figure 47
). Connect the
other end of the Ethernet cable to the host computer or router.
GigE connector
Chapter 8 Rear-Panel CAT 6 Cable Connector Plate
Installing a CAT 6 Cable Connector Plate
2U Rackmount Component Replacement Guide 60
Figure 47 Ethernet Cable
Connected to CAT 6 Cable
Connector Plate Outside the
2U Rackmount
5 Replace the 2U Rackmount cover (see Replacing the Cover on
page 5).
6 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
7 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
8 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
9 Turn on any peripheral devices you turned off earlier.
10 Turn on the host computer.
2U Rackmount Component Replacement Guide 61
Chapter 9
9Ethernet Cable
The Ethernet cable connects the tape drive to the CAT 6 Cable connector
plate located on the back panel of the 2U Rackmount.
This chapter describes how to perform the following tasks:
• Removing an Ethernet Cable
• Installing an Ethernet Cable
This chapter assumes that you are replacing only the Ethernet cable. If
you are also installing a CAT 6 cable connector plate or a tape drive, see
chapter 2, Tape Drive
and chapter 8, Rear-Panel CAT 6 Cable Connector
Plate for further instructions.
Figure 48
shows the location of the Ethernet cable in the unit. It also
shows other unit components affected by this procedure.
Chapter 9 Ethernet Cable
Removing an Ethernet Cable
2U Rackmount Component Replacement Guide 62
Figure 48 Ethernet Cable and
Related Components
Removing an Ethernet Cable
To remove an Ethernet cable from the 2U Rackmount:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2).
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
Ethernet cable
CAT 6 cable connector
plate
GigE connector
Tape drive
Chapter 9 Ethernet Cable
Removing an Ethernet Cable
2U Rackmount Component Replacement Guide 63
5 At this point, you may be able to reach in and disconnect the Ethernet
cable from the rear panel of the tape drive (see figure 50
). If you can
do this, skip the rest of this step and proceed to step 6
. If you do not
have enough room to reach in, then you must first remove the tape
drive, as follows:
a Remove the two thumbscrews securing the tape drive to the tape
drive retaining wall (see figure 49
). Set the thumbscrews aside for
re-use when installing a replacement tape drive.
Figure 49 Thumbscrews
Securing Tape Drive to Unit
b Pull the tape drive forward slightly, and then lift the tape drive
out of the unit. Lay the tape drive on the top of the unit.
c Disconnect the Ethernet cable from the rear panel of the tape
drive (see figure 50
).
Figure 50 Tape Drive Cable
Connections
Thumbscrews
Chapter 9 Ethernet Cable
Removing an Ethernet Cable
2U Rackmount Component Replacement Guide 64
6 Remove the thumbscrew securing the fan module to the unit (see
figure 51
). Set the thumbscrew aside for re-use.
Figure 51 Fan Module
Thumbscrew
7 Gently lift the fan module upward just a little.
8 Pull the Ethernet cable through the fan mounting wall opening.
9 Disconnect the Ethernet cable from the CAT 6 cable connector plate
on the inside of the 2U Rackmount (see figure 52
) and remove the
Ethernet cable.
Caution: The fan mounting flange is sharp. To avoid personal
injury or damaging the power cable assembly or
connector, apply only light pressure when pulling the
cable through the fan mounting wall.
Chapter 9 Ethernet Cable
Installing an Ethernet Cable
2U Rackmount Component Replacement Guide 65
Figure 52 Ethernet Cable in
Ethernet Connector Assembly
on Inside of 2U Rackmount
Installing an Ethernet Cable
To install an Ethernet cable assembly in the 2U Rackmount unit:
1 Make sure the 2U Rackmount, the host computer, and all peripheral
devices are turned off.
2 Gently lift the fan module upward just a little.
3 Push the Ethernet cable through the fan mounting wall opening into
the tape drive compartment (see figure 53
).
4 Connect the Ethernet cable to the rear panel of the tape drive.
5 If you removed the tape drive earlier, re-install the tape drive and
thumbscrews into the 2U Rackmount.
6 Seat the fan module, and then reinstall the thumbscrew securing the
fan module to the unit (see figure 53
).
Caution: The fan mounting flange is sharp. To avoid personal
injury or damaging the power cable assembly or
connector, apply only light pressure when pulling the
cable through the fan mounting wall.
Chapter 9 Ethernet Cable
Installing an Ethernet Cable
2U Rackmount Component Replacement Guide 66
Figure 53 Ethernet Cable
Through Fan Mounting Wall;
Fan Module Thumbscrew
7 Install the tape drive per instructions in Installing a Tape Drive on
page 10.
8 Replace the 2U Rackmount cover (see Replacing the Cover
on
page 5).
9 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
10 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
11 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
12 Turn on any peripheral devices you turned off earlier.
13 Turn on the host computer.
2U Rackmount Component Replacement Guide 67
Chapter 10
10LED Cable Assembly
The LED cable assembly includes the following components:
• LED cable
• LED cable assembly connector (connects to the PCBA)
•Two LEDs
•Power switch
• Power switch cable
This chapter describes how to replace the LED cable assembly in the
2U Rackmount unit by performing the following tasks:
• Removing the LED Cable Assembly
• Installing an LED Cable Assembly
Figure 54 shows the location of the LED cable assembly and PCBA in the
unit.
Chapter 10 LED Cable Assembly
Removing the LED Cable Assembly
2U Rackmount Component Replacement Guide 68
Figure 54 LED Cable
Assembly and PCBA
Removing the LED Cable Assembly
To remove the LED cable assembly:
1 Turn off the host computer and all peripheral devices.
2 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2.
3 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
4 Remove the 2U Rackmount cover (see Removing the Cover
on
page 5).
5 Disconnect the LED cable assembly from the PCBA (see
figure 55
).
6 Remove the power LED and the fan failure LED as follows (see
figure 55
):
PCBA
LED Cable Assembly
Chapter 10 LED Cable Assembly
Removing the LED Cable Assembly
2U Rackmount Component Replacement Guide 69
a Grasp the collar that secures the LED to its mounting bracket.
b Wiggle the collar slightly and pull it toward the PCBA to release
it from the mounting. It helps to slide your fingernail in between
the collar and the sheet metal to help loosen it.
c Slide the released collar along the LED cable toward the PCBA
connector to keep it from falling off the cable when you remove
the LED from its mounting. Save the collars for re-use when
installing a new cable.
d Pull gently on the LED wires to remove the LED from the
mounting.
Figure 55 LED Cable
Assembly Connections to
Mounting Brackets
LED cable
assembly
Power switch and
power switch
mounting bracket
Fan failure LED
Surface-mounted
cable clamp
Power LED
PCBA
Chapter 10 LED Cable Assembly
Removing the LED Cable Assembly
2U Rackmount Component Replacement Guide 70
7 Remove the power switch as follows (see figure 55 and figure 56):
A plastic bracket mounts the power switch to the unit. The bracket
has two tabs that hold the switch in place. The tabs push outward
from the bracket to release the switch. See figure 56
.
Figure 56 Power Switch
Mounting Bracket
a While pulling gently on the power switch wire, use a flat
screwdriver blade to release the tab nearest the wire.
b Pull gently on the wire to pull one side of the power switch out of
the bracket.
c While continuing to pull gently on the power switch wire, use a
flat screwdriver blade to release the other tab.
d When you have released the second tab, gently pull the switch
out of the bracket.
8 Flip open the top of the surface-mounted cable clamp that secures the
cable wires to the floor of the 2U Rackmount and remove the LED
cable assembly from the unit.
Caution: The tabs on the power switch mounting bracket are
fragile. To avoid breaking the tabs when releasing the
power switch, use gentle pressure to press them to the
release position.
Note: The switch moves very little until you release it
completely. At this point, move the switch only
enough to prevent the tab from returning to its locked
position.
Tabs, and Direction of Motion
Chapter 10 LED Cable Assembly
Installing an LED Cable Assembly
2U Rackmount Component Replacement Guide 71
Installing an LED Cable Assembly
To install an LED cable assembly in the 2U Rackmount unit:
1 Position the power switch at the mounting bracket so that the switch
wires are at the lower right corner as viewed from the back of the
unit.
2 Gently push the switch into the bracket until the switch snaps into
place.
3 Install the power and fan failure LEDs as follows:
a Gently push the LED into the socket in the mounting.
b Position the collar on the LED and socket.
c Gently push the collar onto the bracket.
4 Connect the LED cable assembly to the PCBA.
5 Secure the LED cable assembly wires in the surface-mounted cable
clamp and snap the clamp shut.
6 Replace the 2U Rackmount cover (see Replacing the Cover
on
page 5).
7 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
8 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
9 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
10 Turn on any peripheral devices you turned off earlier.
11 Turn on the host computer.
Note: Install the LED attached to green and white wires (the
power LED) into the mounting nearest the power switch.
2U Rackmount Component Replacement Guide 72
Appendix A
ASCSI ID and Connections
This section describes how to perform the following SCSI tasks:
• Setting the SCSI ID
• Making a Single SCSI Connection
• Making SCSI Connections in a Daisy Chain
Setting the SCSI ID
Each device connected to a SCSI bus must have a unique SCSI ID number.
For a unit with one tape drive installed, the factory preset SCSI ID is 5.
For a unit with two tape drives installed, the factory preset SCSI ID for
one tape drive is 5, and the SCSI ID for the other tape drive is 6.
You can change the SCSI ID using the push-button switch on the back of
the unit (see figure 57
). Use the point of a pencil or pen to press the
buttons above or below the number display to increase or decrease the ID
number.
Note: Do not use a SCSI ID of 7. This setting is typically reserved for
the SCSI controller.
Appendix A SCSI ID and Connections
Making a Single SCSI Connection
2U Rackmount Component Replacement Guide 73
Figure 57 SCSI ID Switch on
Back of Unit
Making a Single SCSI Connection
If you are using only one tape drive in the unit, follow these steps:
1 Ensure that all SCSI devices have unique SCSI IDs.
2 Turn off the host computer and all peripheral devices.
3 Turn off and disconnect power to the 2U Rackmount (see
Disconnecting Power
on page 2.
4 Slide the 2U Rackmount out of the equipment rack and into the
service position (see Sliding the 2U Rackmount Out of the Equipment
Rack on page 4).
5 Connect a terminator to the upper SCSI connector on the back of the
unit (see figure 58
).
Note: You must terminate the SCSI bus. The SCSI controller
terminates one end, while a terminator on the unit
terminates the other end.
SCSI ID
Switch
Appendix A SCSI ID and Connections
Making SCSI Connections in a Daisy Chain
2U Rackmount Component Replacement Guide 74
Figure 58 Connecting SCSI as
a Single Unit
6 Connect one end of the SCSI cable to the lower connector on the back
of the unit.
7 Connect the other end of the SCSI cable to the SCSI connector on the
host computer.
8 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
9 Turn on any peripheral devices you turned off earlier.
10 Turn on the host computer.
Making SCSI Connections in a Daisy Chain
If you are using two tape drives in the unit, you can connect each one
separately or you can link the two SCSI connectors on the unit in a daisy
chain. If you use a daisy chain, follow these steps:
1 Ensure that all SCSI devices have unique SCSI IDs.
2 Turn off the host computer and all peripheral devices.
3 Connect the SCSI cable from the host computer to the lower SCSI
connector on the back of the unit (see figure 59
).
SCSI
Terminator
SCSI Cable
Appendix A SCSI ID and Connections
Making SCSI Connections in a Daisy Chain
2U Rackmount Component Replacement Guide 75
Figure 59 Connecting SCSI in
a Daisy Chain
4 Continue the SCSI chain using the upper SCSI connector.
5 If the tape drive is the last device in the chain, connect a terminator to
the upper SCSI connector.
6 Slide the 2U Rackmount back into the equipment rack and secure it to
the rack (see Sliding the 2U Rackmount Into the Equipment Rack
on
page 4).
7 Connect the 2U Rackmount power cable at the rear panel (see
Connecting Power
on page 3).
8 Turn on power to the 2U Rackmount by pressing and holding the
power button on the front panel for one second.
9 Turn on any peripheral devices you turned off earlier.
10 Turn on the host computer.
Note: You must terminate the SCSI bus. The SCSI controller
terminates one end, while a terminator on the last device
in the chain terminates the other end.
2U Rackmount Component Replacement Guide 76
Appendix B
BTroubleshooting
This troubleshooting section does not provide every possible failure
scenario; it only provides the most probable scenarios. Likewise, this
section does not present every possible solution for a given failure. If you
encounter a failure and the solutions in this section do not fix the failure,
contact technical support.
The following table lists failure symptoms, possible causes, and possible
actions you can take to determine the exact problem and fix it.
Symptom Possible Causes Action
Tape drive does not turn
on when unit is on.
• Tape drive power cable
assembly not
connected to tape drive
rear panel
Reconnect the tape drive power
cable assembly to the rear of the tape
drive.
• Tape drive failure Refer to the product manual for the
tape drive for troubleshooting and
service procedures.
Appendix B Troubleshooting
2U Rackmount Component Replacement Guide 77
Fan failure LED turns on Fan module failure (one
or both)
• Determine which fan module has
failed (see Determining Which
Fans Have Failed on page 21).
• Replace the fan module (see
Removing a Failed Fan Module
on page 22 and Installing a Fan
Module on page 27).
Power LED does not turn
on when you press the
Power button
• No power at electric
outlet
Check the power outlet to ensure
that power is present.
• Unit power cord
disconnected at rear
panel
Ensure that you have connected the
unit power cable at the unit’s rear
panel.
• Power LED burned out Check for signs that the unit has
turned on:
•Tape drive LEDs turn on
• Fans turn on – listen for fan
sounds
If unit is on, and Power LED is not
on, replace the LED cable assembly.
• Power supply failure • Check power supply operation by
placing your hand immediately
behind the power supply fans.
If you feel no air flow, the power
supply has failed.
• Replace the power supply (see
Power Supply
on page 31).
• Connector for PCBA
power cable not seated
correctly
Reconnect the connector for the
PCBA power cable to the PCBA.
• LED cable assembly
disconnected
Reconnect the LED cable assembly
to the PCBA.
Symptom Possible Causes Action
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