Undetermined Problems - IBM 8862 - Eserver xSeries 365 Maintenance And Troubleshooting Manual

Undetermined problems

Use the information in this section if the diagnostic tests did not diagnose the failure
or if the server is inoperative.
Notes:
1. If you suspect a software mismatch is causing failures (solid or intermittent), be
2. Damaged data in CMOS memory can cause undetermined problems.
3. Damaged data in BIOS code can cause undetermined problems. See
Check the LEDs on all the power supplies (see "Power LED errors" on page 130). If
the LEDs indicate the power supplies are working correctly, complete the following
steps:
1. Turn off the server.
2. Make sure that the server is cabled correctly.
3. Remove or disconnect the following devices (one at a time) until you find the
Note: Minimum operating requirements are:
4. Turn on the server. If the problem remains, suspect the following FRUs in the
Notes:
1.
2.
136
IBM xSeries 365 Types 8861, 8862: Hardware Maintenance Manual and Troubleshooting Guide
sure to see "Error symptoms" on page 121.
"Recovering BIOS code" on page 24.
failure (turn on the server and reconfigure it each time).
v Any external devices
v Surge-suppressor device (on the server)
v Modem, printer, mouse, or non-IBM devices
v Each adapter
v Hard disk drives
v Memory modules (minimum requirement = 1 GB (2 x 512 MB DIMMs))
v Service processor
v 1 microprocessor
v 2 x 512 MB DIMMs in memory board
v 1 power supply
v Power backplane
v I/O board
following order:
a. Microprocessor-tray assembly
b. I/O board
c. Memory board
d. Power backplane
If the problem is solved when you remove an adapter from the server and
replacing that adapter does not correct the problem, suspect the I/O board.
If you suspect a networking problem and the server passes all the system
tests, suspect a network cabling problem external to the server.