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 x3500 Type 7977,” on page 41 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-error log message Action
Loader Watchdog Triggered
1. Reconfigure the loader watchdog timer to have a higher value
(twice the normal operating-system boot time).
2. Install the Remote Supervisor Adapter II SlimLine device driver
for the operating system.
3. Disable the loader watchdog.
4. Check the integrity of the installed operating system.
5. Reinstall the operating system with the applicable device
drivers.
Machine check asserted
1. Reseat the DIMM.
2. Replace the DIMM.
Machine check asserted for Card or Link -
SPINT
1. Reseat the DIMM.
2. Replace the DIMM.
Memory Card x inserted Information only; if the message remains:
1. Make sure that the DIMM lever is securely latched.
2. Reseat the DIMM.
Memory Card x removed Information only; if the message remains:
1. Make sure that the DIMM lever is securely latched.
2. Reseat the DIMM.
Multiple fan failures Replace any missing or failed fans or power supplies.
OS Watchdog Triggered
1. Reconfigure the operating-system watchdog timer to have a
higher value.
2. Reinstall the Remote Supervisor Adapter II SlimLine device
driver for the operating system.
3. Disable the operating-system watchdog.
4. Check the integrity of the installed operating system.
5. Reinstall the operating system with applicable device drivers.
PCI-X Card Power Good Fault
1. Reseat the Remote Supervisor Adapter II SlimLine, if one is
present.
2. Replace the system board.
3. (Trained service technician only) Replace the PCI-X board.
POST Watchdog Triggered
1. Reconfigure the POST watchdog timer to have a higher value
(consistent with the time it takes to complete POST).
2. Disable the POST watchdog.
Power Good Fault detected by DIMM %d.
1. Reseat the DIMMs.
2. Replace the DIMMs.
3. (Trained service technician only) Replace the power backplane.
4. (Trained service technician only) Replace the system board.
156 IBM System x3500 Type 7977: Problem Determination and Service Guide
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