Exabyte EXB-8200 User manual

510003-001
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Copyright
Copyright 1990 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, 1745 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 and to make changes in
it from time to time without obligation of EXABYTE Corporation to notify any
person or organization of such revision or changes.
Trademark Notices
EXABYTE and EXATAPE are trademarks of EXABYTE Corporation. Loctite
isaregisteredtrademarkofLoctiteCorporation. TORX isaregisteredtrademark
of Camcar Division of Textron Inc.
ii 510003-001

Revision History
Revision No. Date Revision Information
000 January 1989 Preliminary version.
001 May 1990 Initial release.
May 1990 iii

iv 510003-001

Table of Contents
1GeneralInformation .................................. 1
1.1AboutThisManual ................................ 1
1.1.1IntendedAudience............................. 1
1.1.2RelatedPublications............................ 1
1.1.3Revisions.................................. 2
1.2StaticProtectionRequirements.......................... 2
1.3TestandRepairEnvironment........................... 3
1.4RequiredTestTapes................................ 4
1.5RequiredToolsandTestEquipment ....................... 5
1.5.1Tools.................................... 5
1.5.2TestEquipment .............................. 5
1.5.3Software.................................. 6
1.5.4Supplies .................................. 6
1.6EXB-8200UnitTest ............................... 6
1.6.1Preparation................................. 6
1.6.2TestingtheEXB-8200........................... 6
2AddingandRemovinganEXB-8200intheTestandRepairEnvironment..... 9
2.1AddinganEXB-8200totheTestEnvironment.................. 9
2.2RemovinganEXB-8200fromtheTestEnvironment...............13
3R-PackRemovalandReplacement ..........................15
3.1R-PackConfigurations ..............................15
3.2DIPMountedR-PackRemoval..........................15
3.3DIPMountedR-PackInstallation.........................15
3.4SIPMountedR-PackRemoval ..........................17
3.5SIPMountedR-PackInstallation.........................17
4TopCoverRemovalandReplacement.........................19
4.1TopCoverRemoval................................19
4.2TopCoverReplacement..............................21
5SVCardCoverRemovalandReplacement......................23
5.1SVCardCoverRemoval .............................23
5.2SVCardCoverReplacement...........................23
May 1990 v

6CardRetainerRemovalandReplacement ......................25
6.1Preparation ....................................25
6.2RemoveCardRetainers..............................25
6.3ReplaceCardRetainers..............................25
6.4ReassembletheEXB-8200 ............................25
7DeckHangerRemovalandReplacement .......................27
7.1Preparation ....................................27
7.2DeckHangerRemoval ..............................27
7.3DeckHangerReplacement ............................27
7.4ReassembletheEXB-8200 ............................28
8EdgeConnectorMountedCardRemovalandReplacement.............29
8.1MXCardCompatibility..............................29
8.2Preparation ....................................29
8.3ProperHandlingofPrintedCircuitCards.....................31
8.4EdgeConnectorMountedCardRemoval.....................31
8.5RWCardConnections ..............................33
8.6ReplaceEdgeConnectorMountedCards.....................33
8.7ReassembletheEXB-8200 ............................33
9SVCardRemovalandReplacement..........................35
9.1Preparation ....................................35
9.2ProperHandlingofPrintedCircuitCards.....................35
9.3RemoveMountingScrews ............................35
9.4DisconnectSVCardConnectors .........................37
9.5ReconnecttheSVCardConnections.......................40
9.6ReattachtheSVCardtotheMainHousing....................40
9.7ReassembletheEXB-8200 ............................41
10MXEPROMRemovalandReplacement ......................43
10.1Preparation....................................43
10.2IdentificationInformation............................43
10.3EPROMRemoval ................................45
10.4EPROMInstallation...............................47
10.5ReassembletheEXB-8200 ...........................49
11SVCardEPROMRemovalandReplacement....................51
11.1ProperHandlingofPrintedCircuitCards....................51
11.2PreparationforSVCard721103-Bxx......................51
vi 510003-001

11.3EPROMRemovalforSVCard721103-Bxx ..................51
11.4PreparationforSVCard721102-Bxx......................53
11.5EPROMRemovalforSVCard721102-Bxx ..................53
11.6EPROMInstallation...............................53
11.7ReassembletheEXB-8200 ...........................55
12FaceplateRemovalandReplacement.........................57
12.1FaceplateRemoval................................57
12.2FaceplateReplacement..............................59
13DoorRemovalandReplacement ...........................61
13.1Preparation....................................61
13.2DoorRemoval..................................61
13.3DoorReplacement................................63
14DeckAssemblyRemovalandReplacement .....................65
14.1Preparation....................................65
14.2DeckRemoval..................................65
14.3DeckReplacement................................67
14.4ReassembletheEXB-8200 ...........................67
15MainHousingRemovalandReplacement......................69
15.1Preparation....................................69
15.2MainHousingRemoval .............................69
15.3MainHousingReplacement...........................70
15.4ReassembletheEXB-8200 ...........................70
16CleaningProcedure ..................................71
16.1AcceptedProceduresandProducts .......................71
16.2CleaningIntervals ................................71
16.3MinimumFirmwareLevelRequired ......................71
16.4CleaningActionPerformedbyCartridge ....................72
16.5UsageandReusage ...............................72
16.6CleaningInstructions ..............................72
17TapeRemovalProcedure...............................73
17.1Preparation....................................73
17.2Definitions....................................73
17.3RequiredTools..................................75
17.4DisconnecttheEXB-8200............................75
May 1990 vii

17.5PreparationoftheEXB-8200 ..........................75
17.6CartridgePreparation ..............................75
17.7EraseHeadBracketRemoval ..........................77
17.8TapeGuideRemoval ..............................77
17.9TapeRemoval..................................79
17.10RemoveFaceplateandOpenDoor.......................81
17.11WindLooseTapeandEjectDataCartridge ..................81
17.12ReassembletheEXB-8200...........................82
18HeadSyncAdjustmentProcedure ..........................83
18.1Requirements ..................................83
18.1.1Tools ...................................83
18.1.2TestEquipment..............................83
18.1.3SoftwareandUser’sManuals ......................85
18.2Preparation....................................85
18.3ScopeSettings..................................87
18.4 Check the Head Sync Timing ..........................87
18.5AdjusttheHeadSyncTiming..........................91
18.6VerifytheAdjustment..............................92
18.7ReassembletheEXB-8200 ...........................92
viii 510003-001

Figures
Figure2-1ConnectorandSwitchLocationsfortheDBCard............... 8
Figure2-2LocationofDIPSwitchesandRemoteConnectoronDSCard ........ 8
Figure2-3SCSIIDDIPSwitchSettingsfortheDBandDSCards............10
Figure2-4SCSIIDJumperConnectionsfortheDRCard.................10
Figure2-5SCSIIDJumperConnectionsfortheDSCard.................10
Figure2-6LocationoftheUnloadButton.........................12
Figure3-1LocationofDIPR-PacksonRearofEXB-8200................14
Figure3-2LocationofSIPR-PacksonRearofEXB-8200 ................16
Figure4-1LocationofScrewsinTopCover........................18
Figure4-2LocationofScrewsinTopCover(sameasFigure4-1)............20
Figure5-1LocationofScrewsintheSVCardCover ...................22
Figure6-1LocationofCardRetainers(deckhangernotshown).............24
Figure7-1LocationofDeckHanger............................26
Figure8-1LocationofEdgeConnectorMountedCards..................30
Figure8-2LocationofRWCardWireHarnessConnections ...............32
Figure9-1LocationofSVCardMountingScrews ....................34
Figure9-2LocationofSVCardConnectors........................36
Figure9-3ConnectorKeySockets.............................38
Figure10-1LocationofEdgeConnectorMountedCards.................42
Figure10-2LocationofEPROMforMX,MS,orMVCards...............44
Figure10-3LocationofEPROMforMXandMSCards .................44
Figure 10-4 Location of EPROM for MX, MS, or MV Cards (same as Figure 10-2) . . . 46
Figure10-5LocationofEPROMforMXandMSCards(sameasFigure10-3).....46
Figure10-6LocationofEdgeConnectorMountedCards.................48
Figure11-1LocationofSVCardEPROMforSVCard721103-Bxx...........50
Figure11-2LocationofSVCardEPROMforSVCard721102-Bxx...........52
Figure 11-3 Location of SV Card EPROM for SV Card 721102-Bxx
(sameasFigure11-2)....................................54
Figure12-1LocationofDoorReleaseLever .......................56
Figure12-2LocationofFaceplateMountingScrews ...................56
Figure12-3LocationofFaceplateMountingScrews(sameasFigure12-2).......58
Figure13-1LocationofDoorReleaseLever .......................60
Figure13-2DoorandDoorRetainerSeparation......................60
May 1990 ix

Figure13-3RelationshipamongtheDoor,DoorRetainer,andDoorBracket.......62
Figure14-1LocationofDeckMountingScrews......................64
Figure14-2LocationofDeckMountingScrews(sameasFigure14-1)..........66
Figure15-1MainHousingRemoval............................68
Figure17-1DataCartridgewithDoorTapedOpen ....................74
Figure17-2EXB-8200withTapeLoaded.........................76
Figure17-3EXB-8200withTapeLoaded ........................78
Figure17-4EXB-8200withTapeLoaded(sameasFigure17-3).............80
Figure 18-1 Oscilloscope Connections for the Head Sync Timing Procedure .......84
Figure18-2Waveforms ..................................86
Figure18-3Waveforms(sameasFigure18-2) ......................88
Figure18-4Waveforms(sameasFigure18-2) ......................90
Tables
Table2-1PinAssignmentsontheRemoteConnector...................11
Table10-1MV/MX/MSPCBPartNumbers........................45
x510003-001

1 General Information
The EXB-8200 8mm Cartridge Tape Subsystem Maintenance Manual de-
scribes how to repair or test an EXABYTE™ EXB-8200 8mm Cartridge Tape
Subsystem (EXB-8200).
1.1 About This Manual
This manual contains 18 sections. Section 1 provides general information that
you need to know before you begin testing or repairing the EXB-8200, includ-
ing information about the following:
Static protection requirements
The test and repair environment
Required test tapes
Required tools and test equipment
Related publications
Performing an EXB-8200 unit test.
Sections 2 through 18 of this manual describe how to repair, maintain, and
test the EXB-8200. Each section describes the preparation needed for each
task and then provides step-by-step instructions for completing the task.
The instructions in each section of this manual are organized so that all fig-
ures appear on a left-hand page and the associated descriptions appear on the
adjacent right-hand page. If the description associated with a figure continues
beyondasinglepage,thefigureisrepeated.
1.1.1 Intended Audience
This manual is provided to assist EXABYTE Self Maintenance Contract Cus-
tomers in the repair and testing of the EXB-8200.
1.1.2 Related Publications
The following manuals and user’s guides are referred to in this manual.
These manuals and guide books are necessary to understand and accomplish
some of the tasks referred to in this manual.
EXB-8200 8mm Cartridge Tape Subsystem User’s Manual, 510006
EXB-8200 8mm Cartridge Tape Subsystem Product Specification, 510005
EXB-8200 8mm Cartridge Tape Subsystem Compatibility Manual, 510002
May 1990 1
1General Information

Monitor User’s Guide for the EXB-8200 8mm Cartridge Tape Subsystem,
510009
EXPERT User’s Guide for the EXB-8200 8mm Cartridge Tape Subsystem,
510010.
The following books are also useful in understanding the EXB-8200, and it is
recommended that they be kept with this manual:
EXB-8200 8mm Cartridge Tape Subsystem Theory of Operations, 510007
EXB-8200 8mm Cartridge Tape Subsystem Illustrated Parts Catalog,
510000.
1.1.3 Revisions
This document may be revised in whole or in part at any time. If only a sin-
gle section is revised or added, only those pages will be distributed to the reg-
istered holders of this manual.
1.2 Static Protection Requirements
The test and repair environment for the EXB-8200 must be free of conditions
that could cause electrostatic discharge (ESD). To ensure that the testing envi-
ronment is as free from ESD as possible, follow these procedures when test-
ing and repairing the EXB-8200:
Place a static protection mat on the work surface used for testing and re-
pairing the EXB-8200. Use a 1-megohm resistor to ground the static pro-
tection mat.
Ensure that the power supply connected to the EXB-8200 is properly
grounded.
Ensure that the personal computer used for EXPERT and Monitor soft-
ware and for the SCSI bus is properly grounded.
Wear a static protection wrist band whenever you handle the EXB-8200
or EXB-8200 cards that have been removed from their antistatic bags.
Connect this wrist band to the static protection mat or to other suitable
ESD grounding.
Keep all cards in antistatic bags when not in use.
2510003-001
1General Information

1.3 Test and Repair Environment
The environment for testing or repairing the EXB-8200 consists of the follow-
ing:
A work area set up with static protection as described in Section 1.2 of
this manual.
A power supply that conforms to the requirements of the EXB-8200 8mm
Cartridge Tape Subsystem Product Specification for each EXB-8200 un-
der test.
An IBM or compatible personal computer system with a color monitor
and serial port.
An Adaptec SDS-1 family or SDS-3 family SCSI controller or an Ad-
vanced Storage Concepts ASC-88 SCSI controller installed in the com-
puter system.
A SCSI bus cable properly connected to the Adaptec or ASC-88 controller
and properly terminated.
An EXABYTE Monitor cable (727005) connected to the serial communi-
cations port on the computer system.
EXABYTE Monitor software (version 9.12 or later) loaded on the com-
puter system.
EXABYTEEXPERTsoftware(version6.30orlater)loadedonthecom-
puter system.
Any other equipment that may be required or specified in testing specifica-
tions and procedures published by EXABYTE.
Note: There are no exceptions to the environmental requirements unless spe-
cifically agreed to in writing by the customer and EXABYTE. Such
an agreement will become part of this manual as an addendum to this
section.
May 1990 3
1General Information

1.4 Required Test Tapes
This section describes the tapes that are required to test the EXB-8200 and the
methods to be followed in creating them. Label these tapes appropriately for
easy identification.
Test tape
Read Interchange test tape
Write Interchange test tape
EXABYTE Head Sync Tapes (180223), where applicable.
Test Tape
The test tape is used for all testing with EXPERT test software. It should be
an EXATAPE™ 112m tape.
Read Interchange Test Tape
The tape used for the Read Interchange test should be an EXATAPE 15m
tape. This tape is written by the EXPERT Inter_chg test on a known good
drive.
Write Interchange Test Tape
The tape used for the Write Interchange test should be an EXATAPE 15m
tape. This tape is written by the EXPERT Inter_chg test on the drive being
tested. It is read by a known good drive to verify interchangeability.
EXABYTE Head Sync Tapes
At least two head sync tapes are required to adjust the head sync any time an
SV card or deck is replaced.
4510003-001
1General Information

1.5 Required Tools and Test Equipment
This section describes the tools and test equipment required to test and repair
the EXB-8200.
1.5.1 Tools
The following tools are necessary to work on the EXB-8200:
T8 - TORX® screwdriver
T10 - TORX screwdriver
Torque measuring screwdriver (1.0 to 5.0 inch-pounds)
Tweezers
EPROM chip puller
Small straight blade screwdriver - # 0
Small cross blade (Phillips) screwdriver - # 1
SCSI bus cable
Monitor cable (727005)
EPROM chip installation tool
Needle nose pliers
Nonconductive tool, such as a molded potentiometer adjustment tool.
1.5.2 Test Equipment
The following test equipment is necessary to work on EXABYTE products:
Two channel oscilloscope (50 MHz with time delay capability) with a
hood.
Regulated +5/+12 VDC power supply.
IBM or compatible personal computer system with a color monitor and se-
rial port.
Adaptec SDS-1 family or SDS-3 family SCSI controller or an Advanced
Storage Concepts ASC-88 SCSI controller installed in the computer sys-
tem.
May 1990 5
1General Information

1.5.3 Software
The following software is recommended to test the EXB-8200:
EXPERT Version 6.30 or later.
Runtime For Adaptec SDS-1 family SCSI controllers. The
Runtime executable file is provided by Adaptec
when the controller is purchased. Adaptec SDS-3
family and ASC-88 SCSI controllers do not need
any special software.
Monitor Version 9.12 or later.
1.5.4 Supplies
The following supplies are necessary for testing, repairing, and maintaining
the EXB-8200:
Test tapes (see Section 1.4 for descriptions)
EXABYTE 8mm Tape Subsystem Cleaning Cartridge (727113)
Threebond screwlocking agent (item number 1401B)
Loctite® X-NMS Cleanup Solvent (item number 76820).
1.6 EXB-8200 Unit Test
This section describes how to test an EXB-8200 to determine functionality
and to evaluate its performance when troubleshooting.
1.6.1 Preparation
Read Sections 1 and 2 of this manual and the EXPERT User’s Guide for the
EXB-8200 8mm Cartridge Tape Subsystem before testing any EXB-8200.
1.6.2 Testing the EXB-8200
All the tests listed in the EXPERT User’s Guide are useful for evaluating per-
formance of the EXB-8200. Each test was written to evaluate performance of
the EXB-8200 while doing specific types of operations. See the EXPERT
User’s Guide for details.
Each EXB-8200 under test should use a known good power supply 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 any type of feedback or inductive
6510003-001
1General Information

spikes. Power problems will typically cause a high percentage of ECC or ex-
treme difficulty getting known good EXB-8200s to pass the tests consistently.
Test tapes should be closely monitored to ensure that any failures reported by
EXPERT are EXB-8200 related rather than tape related. In the event of a me-
dia error, rerun the test with a known good tape to verify the failure.
To ensure accuracy and consistency when testing a string of EXB-8200s, start
all EXB-8200s at the same time and run them without interruption to comple-
tion. Doing this reduces the likelihood of operator error and computer soft-
ware hangs. Many hours of testing can be negated by a simple operator error.
May 1990 7
1General Information

Figure 2-1
Connector and Switch Locations for the DB Card
(single-ended SCSI)
Figure 2-2
Location of DIP Switches and Remote Connector on DS Card
(implemented for embed 3)
8510003-001

2 Adding and Removing an EXB-8200 in the Test and Re-
pair Environment
This section describes how to add an EXB-8200 to or remove it from the test
and repair environment described in Section 1.3. Follow this procedure to pre-
vent possible problems for the other devices being tested on the SCSI bus.
2.1 Adding an EXB-8200 to the Test Environment
When there is an available address on the SCSI bus and tests are being per-
formed on other EXB-8200s attached to the bus, follow these steps to add a
new EXB-8200 to the bus.
IMPORTANT
These steps assume that each EXB-8200 has its own power supply. If
more than one EXB-8200 share the same power supply, adding an
EXB-8200 to the power supply’s load may momentarily drop the
5volt power level below 4.7 volts, which will reset the SCSI bus. Us-
ing individual, switched power supplies for each EXB-8200 under test
helps eliminate possible interference.
1. Stop SCSI bus activity by pressing the function key corresponding to the
SCSI ID for the available position in the EXPERT display. Refer to the
EXPERT User’s Guide for instructions.
2. If you are using a single-ended SCSI configuration, remove the resistor
terminator packs (R-packs) from the EXB-8200. See Section 3.
3. If you have a DB or DS card, locate the SCSI ID DIP switches on the
back of the EXB-8200 as shown in Figure 2-1. Depending on the ver-
sion of the DB or DS card you have, the back of the EXB-8200 may look
slightly different; however, the SCSI ID switches are in the same loca-
tion. Note that some DS cards include both DIP switches and a remote
connector as shown in Figure 2-2. If you have one of these cards, you
can use the DIP switches, a remote switch, or jumpers to set the SCSI ID.
If you have a DR card, locate the remote connector in the upper left-hand
corner on the back of the EXB-8200. You can use either a remote switch
or jumpers (shunts) to set the SCSI ID.
May 1990 9
2Adding and Removing an EXB-8200 in the Test and Repair Environment

Figure 2-5
SCSI ID DIP Switch Settings for the DB and DS Cards
Figure 2-3
SCSI ID Jumper Connections for the DR Card
Figure 2-4
SCSI ID Jumper Connections for the DS Card
(implemented for embed 3)
10 510003-001
2Adding and Removing an EXB-8200 in the Test and Repair Environment