Solving Undetermined Problems - IBM x3655 - System - 7985 Service Manual

v Make sure that the device drivers on the client and server are using the same
If the Ethernet controller still cannot connect to the network but the hardware
appears to be working, the network administrator must investigate other possible
causes of the error.

Solving undetermined problems

If the diagnostic tests did not diagnose the failure or if the server is inoperative, use
the information in this section.
If you suspect that a software problem is causing failures (continuous or
intermittent), see "Software problems" on page 137.
Damaged data in CMOS memory or damaged BIOS code can cause undetermined
problems. To reset the CMOS data, use the password override jumper to override
the power-on password and clear the CMOS memory, see "System-board jumpers"
on page 13. If you suspect that the BIOS code is damaged, see "Recovering the
BIOS code" on page 156.
Check the LEDs on all the power supplies (see "Power-supply LEDs" on page 142).
If the LEDs indicate that 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
The following minimum configuration is required for the server to start:
v One microprocessor
v Two 512 MB DIMMs
v One power supply
v Power backplane
v Power cord
v ServeRAID SAS controller
4. Turn on the server. If the problem remains, suspect the following components in
If the problem is solved when you remove an adapter from the server but the
problem recurs when you reinstall the same adapter, suspect the adapter; if the
problem recurs when you replace the adapter with a different one, suspect the riser
card.
protocol.
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, and non-IBM devices.
v Each adapter.
v Hard disk drives.
v Memory modules. The minimum configuration requirement is 1 GB (two 512
MB DIMM, in DIMM slots 1 and 2).
v Service processor (Remote Supervisor Adapter II SlimLine).
the following order:
a. Power backplane
b. Memory card (DIMM)
c. System board
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Chapter 5. Diagnostics