AT&T 3B2 Series User manual

© 1989 AT&T
All Rights Reserved
Printed in USA
Notice
The information in this document is subject to change without notice. AT&T assumes no
responsibility for any errors that may appear
in this document
Trademarks
CENTRONICS is a registered trademark of CENTRONICS Data Computer Corporation.
Datakit
is a registered trademark of AT&T.
Freon
is a registered trademark of El. DuPont DeNemours & Company.
Fujitsu
is a registered trademark of Fujitsu ltd.
Hitachi is a registered trademark of Hitachi ltd.
Keystone is a registered trademark of Control Data Corporation.
Micropolis
is a registered trademark of Micropolis Corporation.
Seagate
is a registered trademark of Seagate Technology.
Silent Knight
is a registered trademark of Silent Knight Security Systems.
UNIX
is a registered trademark of AT&T.
WE
is a registered trademark of AT&T.
WREN is a registered trademark of Control Data Corporation.
Published by AT&T.
Ordering Information
For ordering information on this document or related !earning support materials, see "Related
Learning Support Materials, in Chapter
1, "Introduction." The ordering number for this
document
is 305-395.

Contents
Introduction
About This Document 1-1
Purpose 1-1
Intended Audiences 1-1
Prerequisite Skills and Knowledge 1-1
How to Use This Document 1-3
Conventions Used in This Document 1-5
Related Leaming Support Materials 1-8
Related Documents 1-8
Related Training 1-10
How to Order Documents 1-11 1-11
How to Receive Training Information
Additional Support and Information
How to Make Comments About This Document
1-11
1-12
382 Model Overview
Introduction 2-1
Version 2
Hardware 2-2
Version 3 Hardware 2-9
Software 2-20
UNIX Releases 2-20
Compatibility Issues 2-22
UNIX System V Release 1
.0 2-22
UNIX
on Version 3 Models 2-22
Minimum UNIX Release for SCSI 2-22
3.1.1
and 120 MB Tape Drive 2-22
3.1.1
and Embedded Controller Disks 2-23
iii

3B2 Computer Maintenance Utilities 2-23
idtools 2-23
72 MB Hard Disk 2-24
Version 3 System Boards and Backplanes 2-24
382 Peripheral Overview
Introduction 3-1
Expansion Module (XM) (non-SCSI) 3-2
Expansion Module (XM) Cabling 3-3
Tape Module (TM) (non-SCSI) 3-4
TM Cabling 3-4
SCSI Bus Peripherals 3-6
Naming Conventions 3-6
Bus Addressing 3- 7
SCSI Bus
Terminators 3-7
SCSI Hardware Components 3-8
3B2 Computer Peripheral Power Control Unit 3-27
Support Of 3B4000 SCSI Peripherals 3-29
SCSI Software Utilities 3-29
Power 3-31
Soft Power 3-31
Versa Modula Europa (VME) 3-32
Start-up and Initial Testing
Introduction 4-1
System Console Set-up 4-2
Power-Up and Functionality Check 4-3
Utility Floppy Write Check 4-8
System Troubleshooting
Introduction 5-1
System Information 5-2
Firmware Mode and Firmware Vintage 5-2
Software Version 5-4
iv

Disk Partition Information 5-4
Trouble Analysis 5-5
Troubleshooting Charts 5-5
System Will Not Power-up 5-17
LED Announced Sanity Failures 5-17
Error Messages 5-18
Hard Disk Problems (Models 300/310 Only) 5-19
Software Troubleshooting 5-21
File System Checks 5-21
Restoring Core UNIX System 5-22
Crash Dumps 5-23
Restoration of Firmware Passwords 5-25
General Troubleshooting Techniques 5-26
Troubleshooting Techniques for Peripherals 5-28
Terminals and Modems 5-28
Printers 5-28
382 Subassemblies
Introduction 6-1
Version 2 6-2
Removing the Cover 6-2
Power Supply 6-3
Floppy Disk 6- 7
Cartridge Tape Drive (23 MB) 6-7
Cartridge Tape Drive (60 MB) 6-8
Hard Disk 6-8
II 0 Backplane 6-14
Memory Boards 6-18
System Board 6-19
Battery 6-26
Version 3 6-27
System Board 6-28
SCSI Host Adapter Board Removal 6-30
I/0 Feature Cards 6-31
Memory Boards 6-32
Microbus (uBus) Boards 6-33
Buffered Microbus (BuBus) Boards 6-34
Processor Bus (PBus) Boards 6-35
Removing the Cover 6-36
v

Battery 6-37
Thermal Sensor 6-37
Fans 6-40
Power Supply 6-40
SCSI Subsystem - Hard Disks and Cartridge Tape 6-43
Backplane 6-49
Floppy Disk Drive 6-49
3B2/ 500 Subassemblies 6-50
Introduction 6-50
Backplane 6-51
Power Supply 6-52
Miscellaneous Notes 6-53
382 Peripheral Subassemblies
Introduction 7-1
Expansion Module (XM) (non-SCSI) 7-2
Cartridge Tape Drive (23 MB) 7-3
Hard Disk 7-5
Floppy Disk 7-6
Tape Module (TM) (non-SCSI) 7-8
SCSI Subassemblies 7 -9
Disk Controller Module (DCM) 7-9
Disk Module (OM) 7-12
Tape Module (TM) 7-16
Expansion Module (XM) 7-18
9-Track Tape Drives 7-22
Peripheral Power Control Unit (PPCU) 7-40
1/0 Feature Cards
Introduction 8-1
Installation of Feature Cards 8-1
Initialization of Feature Cards 8-1
Troubleshooting Feature Cards 8-4
Feature Cards 8-5
Expanded Ports Card 8-5
Enhanced Ports Card 8-12
Software 8-15
vi

Network Interface Card 8-17
Remote Management Package/ Alarm Interface
Circuit
8-19
Network Access Unit 8-24
Cartridge Tape Controller Card 8-26
Intelligent Serial Controller Card 8-27
Expansion Disk Controller Card 8-35
General Purpose Synchronous Controller (GPSC)
Card 8-36
SCSI Host Adapter Card 8-38
Datakit Card 8-45
Preventive Maintenance
Introduction 9-1
Air Filter Maintenance (600/700/1000) 9-2
Cartridge Tape Maintenance 9-3
23 MB Tape Drives (Non-SCSI) 9-3
SCSI Cartridge Tape Maintenance 9-7
9-Track Tape Drive Maintenance 9-11
Desktop Autoloading, Dual Density 9-Track Tape
Drive 9-11
Keystone II (KS22762) and Keystone III (KS23113)
Preventive Maintenance
9-12
Appendix A: Handling Circuit Boards
Introduction A-1
Static Electricity Cautions A-2
Storage and Packing Guidelines A-3
General Handling Guidelines A-4
Appendix B: Using the Diagnostic Monitor
Introduction B-1
Entering the Diagnostic Monitor B-2
Diagnostic Monitor Commands 8-4
vii

Requesting System Board Diagnostics B-7
Feature Card Diagnostics B-8
Diagnostic Error Messages B-9
Appendix C: Using 382 Computer Maintenance
Utilities
Introduction C-1
3B2 Computer Maintenance Utilities Usage C-3
Fill Equipped Device Table (filledt) C-5
Diagnostic Monitor (dgmon) C-6
Integral Disk Tools (idtools) C-7
Floppy Diskette Formatter C-9
Hard Disk Formatter C-12
Hard Disk Verify C-19
Disk-to-Disk High-Speed Copy C-21
Disk-to-Disk Copy by Sector C-25
Disk-to-Memory Copy C-28
Defect Table Builder C-31
Writing Sanity Track C-42
Change Boot Defaults C-43
Appendix D: Repair Equipment and Spare Parts
Introduction D-1
Spare Parts D-2
Appendix E: Peripheral Configuration Diagrams
Introduction E-1
Diagrams E-4
Glossary
Introduction Gl-1
Terms Gl-2
viii

Index
ix

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