IBM 7015-R50 Installation and maintenance instructions

7015 Models R30, R40, and R50
CPU Enclosure
Installation and Service Guide

i
Third Edition (April 1997)
This edition notice applies to the 7015 Model R30, R40, and R50 CPU Enclosure Installation and Service
Guide .
The following paragraph does not apply to the United Kingdom or any country where such
provisions are inconsistent with local law: THIS PUBLICATION IS PRINTED “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. Some
states do not allow disclaimer of express or implied warranties in certain transactions; therefore, this
statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made
to the information herein; these changes will be incorporated in new editions of the publication. The
manufacturer may make improvements and/or changes in the product(s) and/or program(s) described in this
publication at any time, without notice.
It is possible that this publication may contain reference to, or information about, products (machines and
programs), programming, or services that are not announced in your country. Such references or
information must not be construed to mean that such products, programming, or services will be offered in
your country. Any reference to a licensed program in this publication is not intended to state or imply that
you can use only the licensed program indicated. You can use any functionally equivalent program instead.
AIX is a registered trademark of International Business Machines.
Medeco is a trademark of the Medeco Company.
Micro Channel is a trademark of International Business Machines.
SystemGuard is a trademark of International Business Machines.
Velcro is a trademark of Velcro Industries.
Copyright International Business Machines Corporation, 1994, 1997. All rights reserved.
Note to US Government Users – Documentation and programs related to restricted rights – Use,
duplication, or disclosure is subject to the restrictions set forth in the GSA ADP Schedule Contract.

Preface iii
Table of Contents
Communications Statements vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Notices xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About This Book xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1. Reference Information 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU Enclosure Locations 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front View with Bezel 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front View without Bezel 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front View without Front Access Plate 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator Panel 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Connector Locations with Rear Access Plate Removed 1-4. . . . . . . . . . . . . . . .
Serial Ports 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU Module (Top View with Top Cover Removed) 1-5. . . . . . . . . . . . . . . . . . . . . . . . .
I/O Module (Top View with Rear Access Plate Removed) 1-6. . . . . . . . . . . . . . . . . . .
Media Module 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply or Cooling Unit 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Planar Connector Locations (Top View) 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Planars (Top View) 1-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7015 Model R00 Rack with Power Distribution Bus (PDB) 1-12. . . . . . . . . . . . . . . . . .
Data Flow 1-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Flow 1-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Rail Installation 1-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 1-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External AC Power Cables 1-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Inspection Guide 1-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2 Using SystemGuard 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Power 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Components 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Bring-Up MicroProcessor Overview 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Operator Panel 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Consoles 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Physical and Electronic Key 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Phases 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stand-By Phase 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Init Phase 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Phase 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boot Phase 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Run-Time Phase 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Parameters and Flags 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Working with SystemGuard 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Menus 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iv Service Guide
Maintenance Menu 2-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Configuration 2-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display BUMP Error Log 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enable Service Console 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disable Service Console 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-Off 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Boot 2-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off-Line Tests 2-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Set Parameters 2-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Set National Language 2-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Some Common SystemGuard Tasks 2-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Customizing SystemGuard For Your Needs 2-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reloading the Flash EEPROM 2-60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3. Maintenance Analysis Procedures (MAPs) 3-1520-1. . . . . . . . . . . . . . . . . . . . .
MAP 1520: 7015 CPU Enclosure – Power MAP 3-1520-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAP 1540: 7015 CPU Enclosure – Minimum Configuration 3-1540-1. . . . . . . . . . . . . . . . . . . .
Chapter 4. Removal and Replacement Procedures 4-1. . . . . . . . . . . . . . . . . . . . . . . .
Power-Off Procedure with a Power Distribution Bus 4-2. . . . . . . . . . . . . . . . . . . . . . . . . .
Power-On Procedure with a Power Distribution Bus 4-4. . . . . . . . . . . . . . . . . . . . . . . . . .
Power-Off Procedure with a Power Distribution Unit 4-5. . . . . . . . . . . . . . . . . . . . . . . . . .
Power-On Procedure with a Power Distribution Unit 4-7. . . . . . . . . . . . . . . . . . . . . . . . . .
Power-Off Procedure with a Power Distribution Panel 4-9. . . . . . . . . . . . . . . . . . . . . . . . .
Power-On Procedure with Power Distribution Panel 4-11. . . . . . . . . . . . . . . . . . . . . . . . . .
Handling Static-Sensitive Devices 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Bezel and Front Access Plate 4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disk Drive 4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CD-ROM Drive or Optional Media Device 4-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator Panel 4-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lithium Battery 4-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5-Inch Diskette Drive 4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator Panel Bezel 4-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Media Module 4-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Media Module Fans 4-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Media Module Cables and Docking Connector Cards 4-32. . . . . . . . . . . . . . . . . . . . . . . . .
CPU Module 4-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interlock Cable 4-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Card, CPU Card, or I/O Card 4-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Modules 4-49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU Module Fans 4-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Planar 4-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lateral Planar 1 Card 4-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU Module Flex Cables 4-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Access Plate 4-60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply or Cooling Unit for Systems 4-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Fan or Cooling Unit Fan 4-64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Interface Board (SIB) 4-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Module 4-67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lateral Planar 2 Card 4-71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface v
Adapter Cable 4-73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adapter 4-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Module Flex Cables 4-76. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Planar Power Cables 4-77. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O Planars 4-78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Distribution Cables 4-79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 5. CPU Enclosure Installation Procedure 5–1. . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 6. Parts Information 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Acronyms for FRU Parts 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detail 1. Front Bezel, Front Access Plate, and CPU Enclosure 6-2. . . . . . . . . . . . . . . . .
Detail 2. Disk Drives, Media Devices, and Operator Panel 6-4. . . . . . . . . . . . . . . . . . . . .
Detail 3. Media Module 6-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detail 4. CPU Module (1 of 3) 6-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detail 5. CPU Module (2 of 3) 6-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detail 6. CPU Module (3 of 3) 6-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detail 7. I/O Module 6-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detail 8. Rails for CPU Enclosure Installation 6-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Cables 6-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A. SystemGuard Test Groups A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Test Groups Table A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SystemGuard Test Group Descriptions A-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BUMP Quick I/O Tests Group A-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
JTAG Test Group A-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Direct I/O Test Group A-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU Test Group A-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DCB and Memory Test Group A-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interrupt Tests Group A-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU MultiProcessor Test Group A-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B. Modifying SystemGuard Parameters B-1. . . . . . . . . . . . . . . . . . . . . . . . .
Default Parameter Values B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Flags and Parameters Under AIX Service Aids B-3. . . . . . . . . . . . . . . . . . . . .
Modifying the Remote Authorization Flag B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modifying the Dial-Out Authorization Flag B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modifying Dial-In Phone Numbers B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modifying Dial-Out Phone Numbers B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modifying the Electronic Mode Switch from Service Line Flag B-6. . . . . . . . . . . . . . . . . .
Reloading the Flash EEPROM B-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix C. SystemGuard Remote Operation Configuration C-1. . . . . . . . . . . . . . .
Terminal Configuration C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flags and Parameters Settings C-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Modem Configuration Files C-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initializing a Modem C-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing Dial-Out C-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vi Service Guide
Appendix D. Off Line Diagnostic Error Codes D-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Logging D-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix E. System Power States E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power States E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary: Special Terms Used in SystemGuard X-1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Index X-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Preface vii
Communications Statements
The following statement applies to this product. The statement for other products intended
for use with this product appears in their accompanying manuals.
Federal Communications Commission (FCC) Statement
Note: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his
own expense.
Properly shielded and grounded cables and connectors must be used in order to meet FCC
emission limits. Neither the provider nor the manufacturer are responsible for any radio or
television interference caused by using other than recommended cables and connectors or
by unauthorized changes or modifications to this equipment. Unauthorized changes or
modifications could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired
operation.
United Kingdom Telecommunications Safety Requirements
This equipment is manufactured to the International Safety Standard EN60950 and as such
is approved in the UK under the General Approval Number NS/G/1234/J/100003 for indirect
connection to the public telecommunication network.
The network adapter interfaces housed within this equipment are approved separately, each
one having its own independent approval number. These interface adapters, supplied by the
manufacturer, do not use or contain excessive voltages. An excessive voltage is one which
exceeds 70.7 V peak ac or 120 V dc. They interface with this equipment using Safe Extra
Low Voltages only. In order to maintain the separate (independent) approval of the
manufacturer’s adapters, it is essential that other optional cards, not supplied by the
manufacturer, do not use main voltages or any other excessive voltages. Seek advice from a
competent engineer before installing other adapters not supplied by the manufacturer.
European Union (EU) Statement
This product is in conformity with the protection requirements of EU Council Directive
89/336/EEC on the approximation of the laws of the Member States relating to
electromagnetic compatibility.
Neither the provider nor the manufacturer can accept responsibility for any failure to satisfy
the protection requirements resulting from a non-recommended modification of the product,
including the fitting of option cards not supplied by the manufacturer.
This product has been tested and found to comply with the limits for Class A Information
Technology Equipment according to CISPR 22 / European Standard EN 55022. The limits

viii Service Guide
for Class A equipment were derived for commercial and industrial environments to provide
reasonable protection against interference with licensed communication equipment.
Attention: This is a Class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate measures.
International Electrotechnical Commission (IEC) Statement
This product has been designed and built to comply with IEC Standard 950.
Avis de conformité aux normes du ministère des Communications du
Canada Cet appareil numérique de la classe A respecte toutes les exigences du Réglement sur le
matériel brouilleur du Canada.
Canadian Department of Communications Compliance Statement
This Class A digital apparatus meets the requirements of the Canadian
Interference-Causing Equipment Regulations.
VCCI Statement
The following is a summary of the VCCI Japanese statement in the box above.
This equipment is in the Class 1 category (information equipment to be used in
commercialand/orindustrialareas)andconformstothestandardssetbytheVol-
untaryControl Council ForInterferencebyDataProcessingEquipmentand Elec-
tronic Office Machines aimed at preventing radio interference in commercial and/
or industrial areas.
Consequently,whenusedinaresidentialareaorinanadjacentareathereto,radio
interference may be caused to radios and TV receivers, etc.
Read the instructions for correct handling. VCCI–1.

Preface ix
Radio Protection for Germany
Dieses Gerät ist berechtigt in Übereinstimmung mit dem deutschen EMVG vom 9.Nov.92
das EG-Konformitätszeichen zu führen.
Der Aussteller der Konformitätserklärung ist die IBM Germany.
Dieses Gerät erfüllt die Bedingungen der EN 55022 Klasse A. Für diese Klasse von Geräten
gilt folgende Bestimmung nach dem EMVG:
Geräte dürfen an Orten, für die sie nicht ausreichend entstört sind, nur mit besonderer
Genehmigung des Bundesministers für Post und Telekommunikation oder des Bundesamtes
für Post und Telekommunikation betrieben werden. Die Genehmigung wird erteilt, wenn
keine elektromagnetischen Störungen zu erwarten sind.
(Auszug aus dem EMVG vom 9.Nov.92, Para.3, Abs.4)
Hinweis:
Dieses Genehmigungsverfahren ist von der Deutschen Bundespost noch nicht veröffentlicht
worden.

xService Guide

Preface xi
Safety Notices
Note: For a translation of danger and caution notices, see the System Unit Safety
Information manual, form number SA23-2652.
Definitions of Safety Notices
A danger notice indicates the presence of a hazard that has the potential of causing death
or serious personal injury. Danger notices appear on the following pages:
3-1520-1
4-3
4-4
4-6
4-7
4-10
4-12
4-73
5–2
A
caution notice indicates the presence of a hazard that has the potential of causing
moderate or minor personal injury. Caution notices appear on the following pages:
3-1520-1
4-4
4-7
4-10
4-12
4-18
4-21
5–1
5–2
An
attention notice indicates an action that could cause damage to a program, device,
system, or data.
Safety Notice for Servicing
For safety checks when servicing, refer to Chapter 4, “Removal and Replacement
Procedures.”

xii Service Guide
Laser Safety Information
The optical drive in this system unit is a laser product. The optical drive has a label that
identifies its classification. The label, located on the drive, is shown below.
CLASS 1 LASER PRODUCT
LASER KLASSE 1
LUOKAN 1 LASERLAITE
APPAREIL A LASER DE CLASSE 1
TO IEC 825:1984 CENELEC EN 60 825:1991
The optical drive in this system unit is certified in the U.S. to conform to the requirements of
the Department of Health and Human Services 21 Code of Federal Regulations (DHHS 21
CFR) Subchapter J for Class 1 laser products. Elsewhere, the drive is certified to conform to
the requirements of the International Electrotechnical Commission (IEC) 825 (1st edition
1984) and CENELEC EN 60 825:1991 for Class 1 laser products.
CAUTION:
A class 3 laser is contained in the device. Do not attempt to operate the drive while it
is disassembled. Do not attempt to open the covers of the drive as it is not
serviceable and is to be replaced as a unit.
Class 1 laser products are not considered to be hazardous. The optical drive contains
internally a Class 3B gallium-arsenide laser that is nominally 30 milliwatts at 830
nanometers. The design incorporates a combination of enclosures, electronics, and
redundant interlocks such that there is no exposure to laser radiation above a Class 1 level
during normal operation, user maintenance, or servicing conditions.

Preface xiii
About This Book
This book provides maintenance information that is specific to the 7015 Models R30, R40,
and R50 CPU Enclosures. It also contains maintenance analysis procedures (MAPs) that
are not common to other systems.
MAPs that are common to all systems are contained in the Diagnostic Information For Micro
Channel Bus Systems.
This book is used by the service technician to repair system failures. It is assumed in this
book that the service technician has had training on the 7015 systems.
ISO 9000 ISO 9000 registered quality systems were used in the development and manufacturing of
this product.
Related Publications
The Diagnostic Information For Micro Channel Bus Systems , order number SA23-2765,
contains reference information about adapters and devices, checkout procedures for
problem determination, system verification, using the diagnostics, and cabling for the system
units. This manual also contains the removal-and-replacement procedures for the logic
boards on the disk drives and cabling information that can be used to isolate problems with
customer cabling.
The 7015 Model R00 Rack Installation and Service Guide , order number SA23-2744,
contains information about installing the rack, servicing the power components within the
rack, and switching the CPU drawer on and off.
The 7015 Model R30, R40, and R50 CPU Enclosure Operator Guide , order number
SA23-2742, contains information about the controls and features of the system unit.
The
System Unit Safety Information manual, order number SA23-2652, contains translations
of danger and caution notices.
The 7135 RAIDiant Array: Operator Guide , order number GA33-3251, provides information
about operator controls and features on the SCSI disk unit.
The 7135 RAIDiant Array: Installation and Service Guide , order number SY33-0181,
contains information on the SCSI disk unit.

xiv Service Guide

Reference Information 1-1
Chapter 1. Reference Information
This chapter contains information about part locations; connector locations; slot locations on
the system planar, I/O planars; data and power flow; and CPU enclosure specifications.
Description
7015 CPU Enclosures equipped with a typical configuration contain the following:
•System planar containing memory cards, CPU cards, and an I/O card
•Two I/O planars containing 16 Micro Channel adapter slots
•System interface board containing a parallel port, three serial ports, and two RS485 ports,
and one battery backup unit port
•Power supply
•Cooling unit or optional second power supply
•Operator panel with 1.44MB 3.5-inch diskette drive
•CD-ROM drive
•Media position for optional media devices: 5.0GB 8-mm tape drive, 4.0GB 4 mm tape
drive, or 1/4-inch tape drive
•A SCSI Disk drive with a position for an optional second disk drive.
Other configurations of the CPU enclosure contain additional devices or adapters.

1-2 Service Guide
CPU Enclosure Locations
Front View with Bezel
Bezel Door
Front View without Bezel
CD-ROM Drive
Optional
Media
Position
Operator
Panel 3.5-Inch Diskette
Drive
Front Access
Plate

Reference Information 1-3
Front View without Front Access Plate
Memory Card Slots (4)CPU Card Slots (4)
I/O Card Slot
CD-ROM Drive Operator
Panel 3.5-Inch
Diskette
Drive
Disk Drive
(R50 can
have two)
Lateral
Planar 1
Card
Optional
Media
Position
CPU
Module
Media
Module
Note: The R50 CPU enclosure frame includes card guides not shown in the figure above.
Operator Panel
3.5-Inch
Diskette Drive
Operator Panel Display
Diskette
Eject
Button
Power
Button
Key Mode Switch
Power On
Light 3.5-Inch Diskette Drive
In-Use Light
Reset/Scroll
Button
Normal
Secure
Service

1-4 Service Guide
Rear Connector Locations with Rear Access Plate Removed
Power Supply
Cooling Unit or 2nd
Power Supply Fans
Power
Supply
Fans
Parallel
Port
Serial
Port 1
Serial
Port 2
Adapter LocationsAdapter Locations
Serial
Port 3
RS485 (Out)
Battery
Backup Unit
Connector
RS485 (In)
0/1
1/1
0/2
0/3
0/4
0/5
0/6
0/7
0/81/2
1/3
1/4
1/5
1/6
1/7
1/8
Cooling Unit or
2nd Power Supply Power
Light
Power
Light
Fan 4 Fan 3 Fan 2 Fan 1
Note: Fans 3 and 4 above are in reversed positions if a cooling unit is installed instead of
an optional power supply.
Serial Ports
Serial Ports 1 and 2 are reserved for maintenance purposes. Serial Port 3 is used to
manage an optional external uninterruptible power supply (UPS). Serial Ports 1, 2 and 3 can
also be used as async terminal lines.

Reference Information 1-5
CPU Module (Top View with Top Cover Removed)
CPU Module Fans
Memory Card
Slots (4)
CPU Card
Slots (4)
I/O Card
Lateral Planar 1
Card
System Planar
Docking
Screw
R30 and R40
Fan 10
Fan 08
Fan 09
Memory Card
Slots (4)
CPU Card
Slots (4)
I/O Card
Lateral Planar 1
Card
System Planar
Docking
Screw
R50 CPU Module Fans
Fan 10
Fan 08
Fan 09

1-6 Service Guide
I/O Module (Top View with Rear Access Plate Removed)
Power
Supply
Fans
Adapter
Locations
Parallel Port
Serial Port 1
Serial Port 2
Serial Port 3
Rear of CPU Enclosure
Power
Supply
RS485
Connectors
(Out)
Battery
Backup Unit
Connector
Power Supply
Power Light
Power
Supply
Power
Light
RS485
Connectors
(In)
Cooling Unit or
2nd Power Supply
Cooling Unit
or 2nd Power
Supply Fans