IBM RS/6000 SP, Maintenance Information

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MAP 0280: 604 or 604e High Node Minimum Configuration
056 (continued)
– This problem can be caused by:
Ÿ A SCSI device pulling the bus down or opening the PTC on the SCSI adapter.
Ÿ A defective SCSI adapter
Ÿ A defective terminator
Ÿ
A defective system interface board (SIB)
Ÿ
A defective cable
The most likely problem is the SCSI adapter or a device pulling the bus down
– Set the circuit breakers to the Off (‘0’) position.
– Remove all SCSI Adapters except the one you are trying to boot from.
– Set the circuit breakers to the On (‘1’) position.
– If the Maintenance Menu is displayed, select System Boot, 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 DIAGNOSTIC OPERATING INSTRUCTIONS screen is displayed.
– If the system stops with a ‘c31’ in the operator panel display, follow the instructions on the display to
select your console.
Is a flashing or solid ‘269’ displayed in the operator panel display?
Yes No
057
If the DIAGNOSTIC OPERATING INSTRUCTIONS screen is displayed, the system is working cor-
rectly. It means that one of the SCSI adapters you removed was defective.
– Reinstall the SCSI adapters one by one until you find the defective one.
– Go to “MAP 0570: End of Call” on page 1-357.
– If you have a different symptom, go to Step 001 on page 1-146 and follow the instructions for the
new symptom.
058
– Go to Step 039 on page 1-154.
059
A message should be displayed with the flashing ‘269’.
– Find the message in the following table and do the listed action.
060
– In the following order, exchange the FRUs that have not been exchanged:
1. SCSI adapter
2. I/O Planar
(Step 060 continues)
Message Displayed Action
269 - NO BOOTABLE Go to Step 060.
269 - NO DEVICE Go to Step 039 on page 1-154.
269 - NO DEV TYPE Go to Step 063 on page 1-159.
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RS/6000 SP MAPs