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Note: See Chapter 7, "Parts listing, Types 8861, 8862," on page 139 to determine which components are
replaceable by the customer and which components must be replaced by an IBM field service technician.
Light path LED
CPU (failed microprocessor)
Note: Verify correct installation
sequence; see "Installing a
microprocessor" on page 44.
PCI (fault on PCI)
MEM (memory failure)
DASD (fault in hard disk drive or
SCSI backplane)
Note: If RAID system, refer to
Hardware Maintenance Manual for
the specific RAID adapter.
NR (nonredundancy lost)
Note: "Information" LED may also
be lit.
NMI (nonmaskable interrupt)
Note: PCI or MEM LEDs may also
be lit.
SP (service processor fault)
EXP (device in remote expansion
enclosure has failed)
Notes:
1. If the amber status LED is on
indicating a problem with a
device in the remote expansion
enclosure, replace the device.
2. Check server error log for
indications of a failure in a
device installed in the remote
expansion enclosure or in the
expansion enclosure itself. If
the log indicates a problem in
the expansion enclosure, see
the problem-solving information
in the expansion enclosure
documentation.
94
IBM xSeries 365 Types 8861, 8862: Hardware Maintenance Manual and Troubleshooting Guide
FRU/action
1. Check event log to determine location of failing LED (microprocessor).
2. Find failing microprocessor by checking LEDs on microprocessor tray
assembly.
Note: If LED is not visible with microprocessor tray assembly installed,
remove assembly and light the failing microprocessor's LED by pressing the
light path diagnostics button (see "Installing a microprocessor" on page 44).
3. Microprocessor 1-4.
4. Microprocessor tray assembly.
1. Check System Error log.
2. Failing adapter.
3. I/O board.
1. Check event log to determine location of failing LED (DIMM).
2. DIMM.
3. Memory cassette.
1. Failing drive (reseat/replace).
2. Be sure the fans are operating correctly and the air flow is good.
3. SCSI backplane.
1. If PS x LED is lit on light path diagnostics panel, follow instructions
for that LED.
2. Failing power supply.
1. See System-Error log.
2. If a PCI LED is on, follow the instructions for that LED.
3. If MEM LED is on, follow the instructions for that LED.
4. Restart the server.
1. See System-Error log.
2. Remote Supervisor Adapter II (reseat/replace).
3. I/O board.
1. Check System-Error log (if log indicates a temperature problem and fans
are working correctly, check for air flow blockage).
2. Check light path on remote expansion enclosure.
3. Replace indicated device.
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