Tier 2 CRU information ......................76
DIMM air duct ........................76
Light path diagnostics panel ...................77
Control panel assembly.....................78
ServeRAID-8k adapter .....................79
ServeRAID-MR10is VAULT SAS/SATA Controller ...........81
Removing and replacing FRUs ...................86
Power-supply cage ......................86
2.5-inch SAS backplane ....................87
SAS backplane ........................89
System board and microprocessor.................90
Chapter 5. Diagnostics .....................95
Diagnostic tools ........................95
POST ............................95
POST beep codes ......................95
Error logs .........................100
POST error codes ......................102
Checkout procedure ......................115
About the checkout procedure ..................115
Performing the checkout procedure ................115
Checkpoint codes (trained service technicians only) ...........116
Troubleshooting tables and procedures ...............116
DVD drive problems .....................117
General problems ......................118
Fan problems ........................118
Hard disk drive problems ....................119
Intermittent problems .....................120
Keyboard, mouse, or pointing-device problems............120
Memory problems ......................122
Microprocessor problems....................123
Monitor problems ......................123
Optional-device problems ...................126
Power problems .......................127
Serial port problems .....................128
ServerGuide problems.....................129
Software problems ......................129
Server boot failure problem ...................130
Universal Serial Bus (USB) port problems .............131
Video problems .......................131
Light path diagnostics ......................131
Remind button .......................133
Light path diagnostics LEDs ..................133
Power-supply LEDs.......................137
Diagnostic programs, messages, and error codes ...........138
Running the diagnostic programs.................138
Diagnostic text messages ...................140
Viewing the test log......................140
Diagnostic error codes ....................140
Recovering from a BIOS update failure ...............149
System-error log messages ....................151
Solving power problems .....................160
Solving Ethernet controller problems ................160
Solving undetermined problems ..................161
Problem determination tips ....................162
iv IBM System x3500 Type 7977: Problem Determination and Service Guide