iii
Contents
Preface
...........................................................................
ix
Chapter 1
System Overview
1.1
System Enclosure .....................................................................................1-2
1.2
Operator Control Panel and Drives ...........................................................1-4
1.3
System Consoles ......................................................................................1-6
1.4
System Architecture .................................................................................1-8
1.5
CPU Types............................................................................................. 1-10
1.6
Memory ................................................................................................. 1-12
1.7
Memory Addressing and Data Location .................................................. 1-14
1.8
System Board .........................................................................................1-16
1.8.1
Cross-Bar Switch and System Components ...................................... 1-18
1.8.2
I/O Subsystem ................................................................................. 1-20
1.8.3
System Board Switchpacks ..............................................................1-22
1.9
Server Feature Module ........................................................................... 1-24
1.9.1
Power Control Logic ....................................................................... 1-26
1.10
Power Circuit and Cover Interlock .......................................................... 1-28
1.11
Power Supply ......................................................................................... 1-30
1.12
Power Up/Down Sequence ..................................................................... 1-32
1.13
TIG Bus ................................................................................................. 1-34
1.14
Maintenance Bus (I
2
C Bus)..................................................................... 1-36
1.15
StorageWorks Drives.............................................................................. 1-38
Chapter 2
Troubleshooting
2.1
Troubleshooting During Power-Up ...........................................................2-2
2.2
Control Panel Display and Troubleshooting ..............................................2-4
2.3
Power-Up Display and Troubleshooting....................................................2-6
2.4
Running Diagnostics — Test Command ...................................................2-8
2.5
Testing an Entire System ..........................................................................2-9
2.6
Other Useful Console Commands ...........................................................2-11
2.7
Troubleshooting with LEDs.................................................................... 2-12
2.8
Compaq Analyze .................................................................................... 2-14
2.8.1
Compaq Analyze Graphics Interface (GUI)...................................... 2-14
2.8.2
Description of the Error ................................................................... 2-16
2.9
Releasing Secure Mode ..........................................................................2-20
