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4-2
9030
1
40 Troubleshooting
Indication
S
~ IQg~1
o
POWER ON
D
o
RUN
DBD
Note: No LEOs on.
PROCESSOR
Note:
D
D
Note:
Anyone
of the 12
PROCESSOR
LEOs may
be on.
Anyone or
more of the
71/0 LEOs
may be on.
D
Procedure
Check/Replace:
1. Ac power cord
2. Service panel cable
3.
Power supply cable
4. Power supply assembly
5. Ac module
Closerrighten:
1. I/O door
2. Processor stack door
Check/Replace:
1. Ambient air temperature
2. Clogged filter/airflow blockage
3.
Fans
4. Power supply assembly
Check/Replace:
1. Power supply assembly
2. I/O cards
3. Stack boards
4. System control module
5.
Motherboard/IO backplane
Check/Replace:
System control module
Check/Replace:
Stack boards
Check/Replace:
1.110 card
2. Peripheral device
3. Interface cable
Fault Indicators (Sheet 1 of 3)
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