IBM @Server pSeries 630 6C4, Service Manual

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Symptom Action
The system stops and all of the POST indicators are
displayed on the system console. The term
POST
indicators refers to the device mnemonics (the words
memory , keyboard , network , scsi , and speaker ) that
appear on the system console during the power-on
self-test (POST).
Go to “Boot Problems/Concerns” on page 204.
The system stops and the message STARTING
SOFTWARE PLEASE WAIT... is displayed on the
firmware console. Go to Chapter 4, “Checkpoints”, on page 159.
Symptom: The system does not respond to the password being entered or the system login prompt is displayed
when booting in service mode.
Action:
1. If the password is being entered from the hardware management console (HMC), go to the IBM Hardware
Management Console for pSeries Maintenance Guide .
2. If the password is being entered from a keyboard attached to the system, then the keyboard or its controller may
be faulty. In this case, replace these parts in the following order:
a. Keyboard
b. CEC backplane, location U0.1-P1. (See notes on page 61).
3. If the password is being entered from an ASCII terminal, then use the problem determination procedures for the
ASCII terminal. Make sure the ASCII terminal is connected to S1.
If the problem persists, replace the CEC backplane, location U0.1-P1. (See notes on page 61).
If the problem is fixed, go to
″
MAP 0410: Repair Checkout
″
, in the RS/6000
Eserver
pSeries Diagnostic Information
for Multiple Bus Systems .
If the problem is still not corrected, go to “MAP 1548: Processor Subsystem Problem Isolation” on page 139.
Symptom: No codes are displayed on the operator panel within a few seconds of turning on the system. The
operator panel is blank before the system is powered on.
Action: Reseat the operator panel cable. If the problem is not resolved, replace in the following order:
1. Operator panel assembly, location U0.1-L1. Swap the VPD module from the old operator panel to the new
operator panel.
2. CEC backplane, location U0.1-P1. (See notes on page 61).
If the problem is fixed, go to
″
MAP 0410: Repair Checkout
″
, in the RS/6000
Eserver
pSeries Diagnostic Information
for Multiple Bus Systems .
If the problem is still not corrected, go to “MAP 1548: Processor Subsystem Problem Isolation” on page 139.
Symptom: The SMS configuration list or boot sequence selection menu shows more SCSI devices attached to a
controller/adapter than are actually attached.
Action: A device may be set to use the same SCSI bus ID as the control adapter. Note the ID being used by the
controller/adapter (this can be checked and/or changed through an SMS utility), and verify that no device attached to
the controller is set to use that ID.
If settings do not appear to be in conflict:
1. Go to “MAP 1542: I/O Problem Isolation” on page 127.
2. Replace the SCSI cable.
3. Replace the device.
4. Replace the SCSI adapter
Note: In a
″
twin-tailed
″
configuration where there is more than one initiator device (normally another system)
attached to the SCSI bus, it may be necessary to use SMS utilities to change the ID of the SCSI controller or
adapter.
Chapter 3. Maintenance Analysis Procedures (MAPs)
67