IBM 7985, Problem Determination And Service Manual

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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 4, “Parts listing, System x3655, Type 7985 and 7943,” on page 93 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.
System event/error log message Action
Front panel NMI
1. If the MEM LED on the light path diagnostics panel is lit,
complete the following steps:
a. Check the other system logs for related entries and actions.
b. Reinstall the server device drivers.
c. Reinstall the operating system.
2. If the error LED for PCI slot 1 or PCI slot 2 on the riser card is
lit, complete the following steps:
a. Remove the adapter from the PCI slot that has the lit error
LED.
b. (Trained service technician only) If the error continues,
replace the system board.
3. If the error LED for PCI slot 3 or PCI slot 4 on the system
board is lit, complete the following steps:
a. Remove the adapter from the PCI slot that has the lit error
LED.
b. (Trained service technician only) if the error continues,
replace the system board.
4. Remove all PCI adapters from the server. (Trained service
technician only) if the error continues, replace the system
board.
Software NMI Information only.
System resetting due to unrecoverable error
1. Check the operator information panel and light path diagnostics
LEDs.
2. Test the system with the minimum supported configuration
before replacing parts.
3. (Trained service technician only) Replace the system board.
CPU n over temperature
n = the microprocessor number
1. Make sure that the fans are operating, that there are no
obstructions to the airflow, that the air baffles are in place and
correctly installed, and that the server cover is installed and
completely closed.
2. Make sure that the heat sink for microprocessor n is installed
correctly.
3. (Trained service technician only) Replace microprocessor n .
CPU removal detected Information only. Take action as appropriate.
CPU n non-critical over temperature warning
n = the microprocessor number
1. Make sure that the fans are operating, that there are no
obstructions to the airflow, that the air baffles are in place and
correctly installed, and that the server cover is installed and
completely closed.
2. Make sure that the heat sink for microprocessor n is installed
correctly.
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IBM System x3655 Type 7985 and 7943: Problem Determination and Service Guide