Exabyte EXB-8205 User manual

510702-000
(;%0;538#)#(;%0;838#;PP#
7DSH#'ULYHV
0DLQWHQDQFH

EXB-8205
EXB-8505
8mm Cartridge Tape Subsystems
Maintenance

Copyright
Copyright 1992 by EXABYTE Corporation. All rights
reserved. This item and the information contained herein are
the property of EXABYTE Corporation. No part of this
document may be reproduced, transmitted, transcribed,
stored in a retrieval system, or translated into any language
or computer language in any form or by any means,
electronic, mechanical, magnetic, optical, chemical, manual,
or otherwise, without the express written permission of
EXABYTE Corporation, 1685 38th Street, Boulder, Colorado
80301.
Disclaimer
EXABYTE Corporation makes no representation or
warranties with respect to the contents of this document and
specifically disclaims any implied warranties of
merchantability or fitness for any particular purpose.
Further, EXABYTE Corporation reserves the right to revise
this publication without obligation to notify any person or
organization of such revision or changes.
Trademark Notices
EXABYTE is a registered trademark and EXATAPE is a
trademark of EXABYTE Corporation.
Revision History
Revision Date
000 October 1992
EXABYTE Corporation
1685 38th Street
Boulder, Colorado 80301
[phone]
510702-000
ii 510702

Product Warranty Caution
The EXB-8205 and EXB-8505 8mm Cartridge Tape
Subsystems (CTSs) are warranted to be free from defects in
materials, parts, and workmanship and will conform to the
current product specifications upon delivery. For the
specific details of your warranty, refer to your sales
contract or contact the company from which the EXB-8205
or EXB-8505 was purchased.
The warranty for the EXB-8205 and EXB-8505 shall not apply
to failures caused by:
■Physical abuse or use not consistent with the operating
instructions or product specifications provided by
EXABYTE’s personnel or agent for the applicable
equipment.
■Modifications by other than EXABYTE’s personnel or
agent in any way other than those approved by
EXABYTE, provided the warranty shall not be voided
by the repair or replacement of parts or the attachment
of items in the manner described in maintenance or
installation instructions provided by EXABYTE.
■Repair by other than EXABYTE’s personnel or agent in a
manner contrary to the maintenance instructions
provided by EXABYTE.
■Removal of the EXABYTE serial number tag.
■Physical abuse due to improper packaging of returns.
CAUTION
Returning the EXB-8205 or EXB-8505 in unauthorized
packaging may damage the unit and void the warranty.
If you are returning the EXB-8205 or EXB-8505 for repair,
package it in its original packaging (or in replacement
packaging obtained from your vendor). Refer to the
packing instructions in the EXB-8205 8mm Cartridge Tape
Subsystem User’s Manual or the EXB-8505 8mm Cartridge
Tape Subsystem User’s Manual.
If problems with the EXB-8205 or EXB-8505 occur, contact
your maintenance organization; do not void the product
warranty by allowing untrained or unauthorized personnel
to attempt repairs.
October 1992 iii

Notes:
iv 510702

Contents
About This Manual ix
1 Before You Begin 1-1
TroubleshootingtheCTS................................1-2
Static protection requirements for the troubleshooting environment . . . 1-2
Toolsrequiredfortroubleshooting.......................1-2
Troubleshootingguidelines...........................1-3
Troubleshootingtable ..............................1-4
PerformingMaintenanceProcedures........................1-11
Static protection requirements for the maintenance environment . . . . 1-12
Toolsrequiredformaintenance........................1-13
Maintenanceguidelines ............................1-14
PreparingtheCTSforOperationAfterMaintenance...............1-15
2 Cleaning the CTS 2-1
DeterminingWhentheCTSNeedsCleaning ....................2-2
Time-to-cleanLEDindication..........................2-2
REQUESTSENSE(03h)command.......................2-2
Usingthe8mmCleaningCartridge..........................2-3
3 Loading New Microcode from Tape 3-1
CreatingaMicrocodeUpdateTape..........................3-2
Stepsformakingamicrocodeupdatetape ..................3-2
Timerequiredtomakeamicrocodeupdatetape...............3-5
UsingaMicrocodeUpdateTape ...........................3-6
Stepsthatoccurduringthemicrocodeupdateprocess ...........3-6
Timerequiredtoloadcodefromtape .....................3-9
4 Removing a Cartridge from the CTS 4-1
ProcedureforRemovingaCartridge.........................4-2
Dothisfirst ....................................4-2
Removingtapefromthetapepath.......................4-3
Removingthecartridge .............................4-5
PreparingtheCTSforoperation ........................4-6
October 1992 v

5 Replacing FRUs 5-1
ReplacingtheFrontBezel .............................. 5-2
Dothisfirst.................................... 5-2
Procedureforremovingthefrontbezel ................... 5-2
Procedureforreplacingthefrontbezel.................... 5-3
PreparingtheCTSforoperation........................ 5-4
ReplacingtheFrontPanel .............................. 5-5
Dothisfirst.................................... 5-5
Procedureforremovingthefrontpanel ................... 5-5
Procedureforreplacingthefrontpanel ................... 5-6
PreparingtheCTSforoperation........................ 5-8
ReplacingtheRearPanel............................... 5-9
Dothisfirst.................................... 5-9
Procedureforremovingtherearpanel.................... 5-9
Procedureforreplacingtherearpanel....................5-10
PreparingtheCTSforoperation........................5-11
ReplacingtheTopPanel ...............................5-12
Dothisfirst....................................5-12
Procedureforremovingthetoppanel ....................5-12
Procedureforreplacingthetoppanel ....................5-13
PreparingtheCTSforoperation........................5-14
ReplacingtheBottomPanel .............................5-15
Dothisfirst....................................5-15
Procedureforremovingthebottompanel..................5-15
Procedureforreplacingthebottompanel ..................5-16
PreparingtheCTSforoperation........................5-17
ReplacingtheLeftPanel ...............................5-18
Dothisfirst....................................5-18
Procedureforremovingtheleftpanel ....................5-18
Procedureforreplacingtheleftpanel ....................5-19
PreparingtheCTSforoperation........................5-20
ReplacingtheRightPanel ..............................5-21
Dothisfirst....................................5-21
Procedureforremovingtherightpanel ...................5-21
Procedureforreplacingtherightpanel....................5-22
PreparingtheCTSforoperation........................5-23
ReplacingtheVUA/SUACard ...........................5-24
Dothisfirst....................................5-24
ProcedureforremovingtheVUA/SUAcard ................5-24
ProcedureforreplacingtheVUA/SUAcard ................5-26
PreparingtheCTSforoperation........................5-27
vi 510702

ReplacingtheSLDCard ...............................5-28
Dothisfirst ...................................5-28
ProcedureforremovingtheSLDcard....................5-28
ProcedureforreplacingtheSLDcard ....................5-30
PreparingtheCTSforoperation .......................5-33
ReplacingtheVUA–SLDFlexCable........................5-34
Dothisfirst ...................................5-34
ProcedureforremovingtheVUA–SLDflexcable .............5-34
ProcedureforreplacingtheVUA–SLDflexcable..............5-35
PreparingtheCTSforoperation .......................5-36
ReplacingtheDeckSubassembly..........................5-37
Dothisfirst ...................................5-37
Procedureforreplacingthedecksubassembly...............5-38
PreparingtheCTSforoperation .......................5-43
ReplacingtheDoorandRetainer..........................5-44
Dothisfirst ...................................5-44
Procedureforremovingthedoorandretainer ...............5-44
Procedureforreplacingthedoorandretainer ...............5-46
PreparingtheCTSforoperation .......................5-48
Index I-1
October 1992 vii

viii 510702

About This Manual
This manual provides instructions for performing maintenance on the
EXABYTE®EXB-8205 and EXB-8505 8mm Cartridge Tape Subsystems
(CTS). It explains how to clean the tape path, load microcode, remove
a data cartridge from a nonfunctioning CTS, and replace field
replaceable units (FRUs).
Intended audience
This manual assists EXABYTE self-maintenance contract customers in
the troubleshooting and maintenance of the CTS.
CAUTION
To perform the procedures in this manual, you must be a
qualified service technician whose organization has a
self-maintenance agreement with EXABYTE Corporation. If
these steps are performed by an unqualified individual, the
product warranty will be voided.
Contents of this manual
This manual contains the following information:
Chapter 1 contains information about preparing for CTS
maintenance, including required tools and equipment for
troubleshooting and maintenance as well as approaches to
maintenance.
Chapter 2 contains instructions for cleaning the CTS’s tape path
using an EXABYTE or EXABYTE-approved 8mm cleaning
cartridge.
Chapter 3 provides instructions for loading firmware to the CTS.
Chapter 4 contains instructions for removing a data cartridge from
a nonfunctioning CTS.
October 1992 ix

Chapter 5 provides step-by-step instructions for removing and
replacing CTS field replaceable units (FRUs) and for preparing
the CTS for operation after you replace each FRU.
A glossary, index, and reader’s comment form are included at the
back of this manual.
How to use this manual
Before performing any of the maintenance procedures in this manual,
read Chapter 1. This chapter describes troubleshooting procedures
that help you determine the maintenance procedures to perform; lists
the required tools and equipment for troubleshooting and
maintenance; and lists the guidelines for protecting the CTS against
electrostatic discharge when performing any of the procedures in this
manual.
If you need to perform routine maintenance, such as cleaning the tape
path or upgrading microcode, refer to Chapter 2 or Chapter 3 as
appropriate. If you have determined that you need to replace a FRU,
and you have received the new FRU from EXABYTE, refer to the
section in Chapter 5 that describes how to replace the FRU and how
to prepare the CTS for operation after you have replaced a FRU.
CAUTION
If a cartridge is stuck in a nonfunctional CTS, make sure you
remove the cartridge before performing any other maintenance
procedures. Refer to Chapter 4 for instructions.
x510702

Conventions used in this manual
This manual uses special conventions to highlight action items, notes,
important information, cautions, and warnings. The following shows
the format and definitions of this text. Take special note of boxed text.
Failure to follow cautions can result in equipment damage or personal
injury!
➥Text that is preceded by an arrow indicates an important action
that you should perform before continuing.
Text in courier typeface indicates messages that appear on your computer
screen when you are using CTS Monitor.
Note: Read notes for hints or suggestions about the topic or
procedure being discussed.
Important
Read the information in Important boxes to learn convenient
methods of following the procedure discussed in the text.
Important messages help you to successfully complete or
avoid additional steps in a procedure.
CAUTION
Read the information in Caution boxes to avoid damaging
equipment. Caution messages help you to successfully
complete a procedure and avoid a potentially damaging
event.
Format and definitions of messages used in this manual
October 1992 xi

Related publications
The following publications will help you understand some of the
tasks referred to in this manual.
EXB-8205 8mm Cartridge Tape Subsystem User’s Manual, 510701
EXB-8205 8mm Cartridge Tape Subsystem Product Specification,
510703
EXB-8505 8mm Cartridge Tape Subsystem User’s Manual, 510503
EXB-8505 8mm Cartridge Tape Subsystem Product Specification,
510504
EXPERT User’s Guide for the 8mm Cartridge Tape Subsystem, 510010
EXABYTE Monitor User’s Guide for the 8mm Cartridge Tape
Subsystem, 510206
xii 510702

1
Before You Begin
This chapter contains the following information:
Troubleshooting the CTS
•Static protection requirements for the troubleshooting
environment
•Tools and equipment required for troubleshooting
•Troubleshooting guidelines
Maintaining the CTS
•Static protection requirements for the maintenance
environment
•Tools and equipment required for maintenance
•Maintenance guidelines
October 1992 1-1

Troubleshooting the CTS
To determine which maintenance procedures you need to perform on
your CTS, follow the steps in this section.
Static protection requirements for the troubleshooting
environment
ThetroubleshootingenvironmentfortheCTSmustbefreeof
conditions that could cause electrostatic discharge (ESD). To ensure
that the environment is as free from ESD as possible, follow these
static protection guidelines when performing troubleshooting
procedures on the CTS:
Ensure that the power supply connected to the CTS is properly
grounded.
Ensure that the personal computer used for EXPERT and Monitor
software and for the SCSI bus is properly grounded.
CAUTION
Failure to use these static protection methods may cause
severe damage to the CTS.
Tools required for troubleshooting
When performing troubleshooting procedures on the CTS, you need
the following equipment:
EXABYTE EXPERT software (version 6.70 or later), EXPERT
User’s Guide for the 8mm Cartridge Tape Subsystem, and equipment
required to run EXPERT. EXPERT tests are designed to evaluate
the performance of the CTS during specific types of operations.
CTS Monitor software (version 12.54 or later), CTS Monitor User’s
Guide for the 8mm Cartridge Tape Subsystem, and equipment
required to run Monitor. CTS Monitor allows you to test CTS
firmware and drivers, perform diagnostic dumps, analyze CTS
performance, issue servo commands, and upgrade firmware.
1-2510702
1Before You Begin

For each CTS you want to test, one blank 15m EXATAPE data
cartridge.
To order these tools for troubleshooting, contact your vendor.
Troubleshooting guidelines
When a problem arises with the CTS, test the CTS before performing
any maintenance procedures to determine the problem and possible
solutions. Follow these troubleshooting guidelines:
1. Make sure the troubleshooting environment meets the static
protection requirements listed on page 1-2. Failure to use these
static protection methods may cause severe damage to the CTS.
2. Use a known good power supply for each CTS under test to
verify operation and to eliminate any outside influences on the
test. Verify that all power to the test area is clean and free of
feedback or inductive spikes. Also verify that the power supply
connector is making good contact.
Power problems will typically cause a high percentage of
rewrites or error correction code (ECC)—or extreme difficulty
getting known good CTSs to pass the tests consistently.
3. Run EXPERT software tests to help you determine specific
problems with the CTS. Refer to the EXPERT User’s Guide for
instructions.
To ensure accuracy and consistency when testing a string of
CTSs, start all CTSs at the same time and run them without
interruption to completion.
October 1992 1-3
1Before You Begin

4. Try the test cartridges in two or three different CTSs to ensure
that any failures reported by EXPERT are CTS-related rather
than tape-related. If a media error occurs, repeat the test with a
known good cartridge to verify that the failure is CTS-related.
5. After running EXPERT tests, refer to Table 1-1 in the next section
to determine the maintenance procedures to perform.
Troubleshooting table
Table 1-1 contains information about CTS errors that you may
encounter while running EXPERT tests. It includes a description of
each error and the action to take for each error. Use Table 1-1 to
determine the maintenance procedures you need to perform on your
CTS, and then refer to the indicated chapter or page for instructions.
Note: For each error listed in Table 1-1, perform the steps in the Do
this... column one at a time. Proceed to the next step in this
column only if the previous step does not correct the problem.
Error
code Description of error Do this... Refer to...
E000 High rewrites. The test exceeded the soft error
rate limit for rewrites.
1. Clean the CTS. Chapter 2
2. Use a new data cartridge.
not applicable
3. Replace VUA-SLD flex cable. page 5-34
4. Make sure that the SLD and
VUA/SUA cards are firmly
seated in their connectors.
page 5-30 and
page 5-26
5. Replace the VUA/SUA card. page 5-24
6. Replace the SLD card. page 5-28
7. Replace the deck subassembly. page 5-37
Table 1-1 Error descriptions and corrective actions
1-4510702
1Before You Begin

Error
code Description of error Do this... Refer to...
E001
High ECC. The test
exceeded the soft error
rate limit for ECC (error
correction code).
1. Clean the CTS. Chapter 2
2. Use a new data cartridge.
not applicable
3. Replace VUA-SLD flex cable. page 5-34
4. Make sure that the SLD and
VUA/SUA cards are firmly
seated in their connectors.
page 5-30 and
page 5-26
5. Replace the VUA/SUA card. page 5-24
6. Replace the SLD card. page 5-28
7. Replace the deck subassembly. page 5-37
E002
High tracking. The test
exceeded the soft error
rate limit for tracking
retries.
1. Clean the CTS. Chapter 2
2. Use a new data cartridge.
not applicable
3. Replace VUA-SLD flex cable. page 5-34
4. Make sure that the SLD and
VUA/SUA cards are firmly
seated in their connectors.
page 5-30 and
page 5-26
5. Replace the VUA/SUA card. page 5-24
6. Replace the SLD card. page 5-28
7. Replace the deck subassembly. page 5-37
E003 High rereads. The test exceeded the soft error
rate limit for rereads.
1. Clean the CTS. Chapter 2
2. Use a new data cartridge. not applicable
3. Replace VUA-SLD flex cable. page 5-34
4. Make sure that the SLD and
VUA/SUA cards are firmly
seated in their connectors.
page 5-30 and
page 5-26
5. Replace the VUA/SUA card. page 5-24
6. Replace the SLD card. page 5-28
7. Replace the deck subassembly. page 5-37
E012 Duplicate SCSI ID. Two or more CTSs are addressed
tothesameSCSIID.
1. Make sure that you have
assigned a unique SCSI address
to each device on your SCSI bus.
not applicable
2. Replace the SLD card. page 5-28
E013 I/O timeout. The CTS
never reached the ready
state for the test. Replace the SLD card. page 5-28
October 1992 1-5
1Before You Begin

Error
code Description of error Do this... Refer to...
E014
SCSI reset failure. The
CTS never reset when
you issued the reset
command.
1. Make sure that you have
assigned a unique SCSI address
to each device on your SCSI bus.
not applicable
2. Replace the SLD card. page 5-28
3. Replace the VUA/SUA card.
E015
Adaptec board fail. A
SCSI command failed
while attempting to
execute.
1. Make sure that you have
assigned a unique SCSI address
to each device on your SCSI bus.
not applicable
2. Replace the SLD card. page 5-28
E016 SCSI inbound parity error. SCSI communication was
interrupted.
1. Make sure that you have
assigned a unique SCSI address
to each device on your SCSI bus.
not applicable
2. Replace the SLD card. page 5-28
E017
Buffer miscompare. Data
in the buffer did not match
theexpecteddatatothe
host (initiator).
Replace the SLD card. page 5-28
E027
Byte 2 filemark error (see
the Extended Sense Bytes
of the REQUEST SENSE
command in the user’s
manual for your CTS).
1. Replace the SLD card. page 5-28
2. Replace the VUA/SUA card. page 5-24
3. Replace deck subassembly. page 5-37
E032 Not ready. The CTS cannot be accessed
through the SCSI bus.
1. Make sure that you have
assigned a unique SCSI address
to each device on your SCSI bus.
not applicable
2. Replace the SLD card. page 5-28
E033
Medium error. One block
of data was
unsuccessfully written on
tape 10 times or 40 blocks
inarowwere
unsuccessfully written.
1. Clean the CTS. Chapter 2
2. Use a new data cartridge.
not applicable
3. Replace the VUA-SLD flex cable. page 5-34
4. Make sure that the SLD and
VUA/SUA cards are firmly
seated in their connectors.
page 5-30 and
page 5-26
5. Replace the VUA/SUA card. page 5-24
6. Replace the SLD card. page 5-28
7. Replace the deck subassembly. page 5-37
E034
Hardware error. The CTS
detected an
unrecoverable error during
command execution or
during a power-on
self-test.
Replace the deck subassembly. page 5-37
1-6510702
1Before You Begin

Error
code Description of error Do this... Refer to...
E035
Illegal request. A SCSI
command was issued that
was logically or
structurally incorrect.
1. Make sure your EXPERT setup is
correct.
EXPERT User’s
Guide
2. Replace the SLD card. page 5-28
3. Replace the deck subassembly. page 5-37
E036
Unit attention. Either the
data cartridge was
changed or a reset
performed on the CTS
since the last command or
power-up.
1. Make sure that you have
assigned a unique SCSI address
to each device on your SCSI bus.
not applicable
2. Replace the SLD card. page 5-28
3. Replace the deck subassembly. page 5-37
E037
Data protect failure. A
write command was
attempted with the write
protect tab in the on
position.
If you want to write data to that
cartridge, put the write protect tab
in the off position.
not applicable
E051 Selection time out.
1. Make sure that you have
assigned a unique SCSI address
to each device on your SCSI bus.
not applicable
2. Replace the SLD card. page 5-28
E05C SCSI error.
1. Make sure that you have
assigned a unique SCSI address
to each device on your SCSI bus.
not applicable
2. Replace the SLD card. page 5-28
E201 Format error. The data
formatter detected an
error.
1. Replace the SLD card. page 5-28
2. Replace the deck subassembly. page 5-37
E202 Servo system error. The
servo system detected a
hardware error.
1. Replace deck subassembly. page 5-37
2. Replace the SLD card. page 5-28
E208 Formatter underrun. The
data formatter detected a
data flow underrun. Replace SLD card. page 5-28
E910
Medium error. One block
of data was
unsuccessfully written on
tape 10 times or 40 blocks
inarowwere
unsuccessfully written.
1. Clean the CTS. Chapter 2
2. Use a new data cartridge.
not applicable
3. Replace the VUA-SLD flex cable. page 5-34
4. Make sure that the SLD and
VUA/SUA cards are firmly
seated in their connectors.
page 5-30 and
page 5-26
5. Replace VUA card. page 5-24
6. Replace the deck subassembly. page 5-37
October 1992 1-7
1Before You Begin