Cabling the System Rack and I/O Rack ...............31
Connecting JTAG and Operator Panel Cables ............32
Connecting RIO and SPCN Cables ................32
Models S80 and S85 Power Overview ................38
System Rack Power .....................38
I/O Rack Power ......................38
Models S80 and S85 Cabling ...................40
I/O Drawer Cabling .....................41
SCSI IDs and Bay Locations ..................42
Location Codes .......................44
Physical Location Codes ...................44
Location Code Format ....................44
AIX Location Codes .....................45
AIX and Physical Location Code Reference Tables ............48
System Rack .......................48
I/O Drawer 0 Locations ....................53
I/O Drawer 1 Locations ....................57
I/O Drawer 2 Locations ....................60
I/O Drawer 3 Locations ....................63
SCSI Device Locations ....................66
Specifications ........................67
Models S80 and S85 System Rack ................67
NoiseEmissionNotes....................71
External AC Power Cables ....................71
Service Inspection Guide ....................72
Chapter 2. Introduction to Diagnostics ...............73
Maintenance Analysis Procedures (MAPs)...............73
Error Codes .........................74
Displaying and Using SRCs ..................74
IPL Checkpoints and Error Codes .................75
FRUIsolation........................75
Electronic Service Agent ....................76
Using the Service Processor and Electronic Service Agent ........76
Chapter 3. Maintenance Analysis Procedures (MAPs) ..........79
EntryMAP.........................79
QuickEntryMAP.......................80
Quick Entry MAP Table of Contents ................80
MAP 1020: Problem Determination .................84
Purpose of This MAP.....................84
Step 1020-1........................85
Step 1020-2........................86
Step 1020-3........................87
Step 1020-4........................87
MAP 1520: Power .......................88
Cannot Power On System Rack (No Error Code) ...........90
Cannot Power On I/O Rack (No Error Code) .............95
I/O Rack Becomes Powered On, But A Rack-Mounted Unit Does Not Become
Powered On .......................97
iv Service Guide
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