IBM 8649 - Eserver xSeries 225, Maintenance And Troubleshooting Manual

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Note: See “System replaceable units” on page 122 to determine which components should be replaced by a field
service technician.
Symptom to FRU list
Symptom FRU/action
Tape drive test failed. Tape drive
BIOS timer test failed. System board
IRQ controller test tailed. System board
DMA channels test failed. System board
RAM refresh test failed. System board
Real-time clock test failed. System board
System board LED test failed. System board
Cache test failed. Microprocessor
Keyboard test failed.
1. Keyboard
2. System board
Speaker test failed. System board
Mouse test failed.
1. Mouse
2. System board
Hot-swap power-supply LED errors
Use the information in this section to solve power-supply problems.
Note: The minimum configuration required for the dc good light to be lit is:
v
Power supply
v
Power cage assembly, if installed.
v
System board (set switch 7 of SW1 to bypass the power switch; see
“System-board internal connectors” on page 91.
Note: See “System replaceable units” on page 122 to determine which components should be replaced by a field
service technician.
AC good LED DC good LED Description FRU/action
Off Off No power to system or ac
problem.
1. Check ac power to the system.
2. Power supply.
Chapter 6. Symptom-to-FRU index
109