IBM 7163, Problem Determination And Service Manual

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event but indicate that you will not take immediate action. The system-error LED or
information LED flashes while it is in Remind mode and stays in Remind mode until
one of the following conditions occurs:
v
All known errors or non-critical events are corrected.
v
The server is restarted.
v
A new error or non-critical event occurs, causing the system-error LED or
information LED to be lit again.
Light path diagnostics LEDs
The following table describes the LEDs on the light path diagnostics panel and
suggested actions to correct the detected problems.
v
Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, “Parts listing, System x3755 Type 8877 and 7163,” on page 25 to determine which
components are customer replaceable units (CRU) and which components are field replaceable units
(FRU).
v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Lit light path
diagnostics LED with
the system-error or
system-information
LED also lit
Description Action
All LEDs off (the
power LED is lit). No action necessary.
OVERSPEC There is insufficient power to power
the server.
1. Check that ac power is available to all power
supplies.
2. Reseat any failed power supplies.
3. Replace any failed power supplies.
4. Add an optional power supply if only one power
supply is installed.
5. Remove optional devices.
6. Use 220 V ac instead of 110 V ac.
PS 1 Power supply 1 has failed or has
been removed.
Note: In a redundant power
configuration, the dc power LED on
one power supply might be off.
1. Reinstall the removed power supply.
2. Reseat the failed power supply.
3. Replace the failed power supply.
4. Remove ac power before you restore dc power.
PS 2 Power supply 2 has failed or has
been removed.
Note: In a redundant power
configuration, the dc power LED on
one power supply might be off.
1. Reinstall the removed power supply.
2. Reseat the failed power supply.
3. Replace the failed power supply.
4. Remove ac power before you restore dc power.
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IBM System x3755 Type 8877 and 7163: Problem Determination and Service Guide