IBM RS/6000 SP, Maintenance Information

Page: 171 / 388

MAP 0280: 604 or 604e High Node Minimum Configuration
018 (continued)
– Go to “MAP 0570: End of Call” on page 1-357.
019
– Set the circuit breakers to the Off (‘0’) position.
– Record the slot numbers of the adapters. Label and record the location of any cables attached to the
adapters.
– Go to Step 020.
020
– EITHER leave in the SCSI adapter and remove all DASD except the boot disk OR leave in the
Ethernet adapter for a net boot diag and remove the SCSI adapter. (See the media drawer diagram in
"Removing the 604 or 604e High Node DASD" in
IBM RS/6000 SP: Maintenance Information, Volume 3,
Locations and Service Procedures.)
– Set the circuit breakers to the On (‘1’) position.
– If the Maintenance Menu is displayed, select System Boot, then Boot From List.
– Wait for one of the following conditions to occur:
Ÿ The system stops with a flashing or solid ‘269’ displayed in the operator panel display.
Ÿ The system stops with ‘c31’ displayed in the operator panel display.
Ÿ
The same three digit number is displayed in the operator panel display for longer than three minutes
except for the number ‘165’ which may display for up to ten minutes with no activity on the BUMP
console.
Ÿ The number ‘888’ or ‘---’ is in the operator panel display.
Is ‘Diagnostic Operating Screen’ or ‘c31’ displayed in the operator panel display?
Yes No
021
One of the FRUs remaining in the CPU Enclosure is defective.
– In the following order, exchange the FRUs that have not been exchanged:
1. SCSI adapter
2. Hdisk0
3. SCSI cable
4. Disk 1, Disk 4 receiver card
5. Disk 2, Disk 3 receiver card
6. Inter-receiver cable
7. I/O card (IOD)
8. I/O planars
9. CPU module flex cables
10. I/O module flex cables
11. System planar (SP)
12. System interface board (SIB)
13. Power distribution cable cluster
14. CPU cards (CPU) (one at a time)
15. Memory cards (MC) (one at a time)
16. Power supply (PS)
– Repeat Step 019 until the defective FRU is identified or all the FRUs have been exchanged.
(Step 021 continues)
Chapter 1. Maintenance Analysis Procedures (MAPs)
1-151