IBM IntelliStation A Pro 6217, Руководство по обслуживанию

Страница: 81 / 188

3. Remove adapters and disconnect the cables and power connectors to all
internal and external devices until the computer is at the minimum configuration
required to start the computer (see “Solving undetermined problems”).
4. Reconnect all ac power cords and turn on the computer. If the computer starts
successfully, replace adapters and devices one at a time until the problem is
isolated.
If the computer does not start from the minimal configuration, replace the
components in the minimal configuration one at a time until the problem is isolated.
Solving Ethernet controller problems
See the Ethernet controller documentation on the Device Drivers CD for information
about problems that might occur with the Ethernet controller.
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 39.
Notes:
1. Damaged data in CMOS memory 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 internal
connectors” on page 7.
2. Damaged BIOS code can cause undetermined problems.
If you suspect that the BIOS code is damaged, see “Updating (flash-updating)
the BIOS code on the computer” on page 56.
Check the LEDs on all the power supplies. If the LEDs indicate the power supplies
are working correctly, complete the following steps:
1. Turn off the computer.
2. Make sure that the computer is cabled correctly.
3. Remove or disconnect the following devices (one at a time) until you find the
failure (turn on the computer and reconfigure each time):
v
Any external devices
v
Surge suppressor device (on the computer)
v
Modem, printer, mouse, or non-IBM devices
v
Each adapter
v
Hard disk drives
v
Memory modules. The minimum configuration requirement is 1 GB (two 512
MB DIMMs).
The following minimum configuration is required for the computer to start:
a. Power supply
b. System board
c. One microprocessor
d. Memory (with a minimum of two 512 MB DIMM)
4. Turn on the computer. If the problem remains, suspect the following components
in the following order:
v
Power supply
v
System board
Chapter 2. Diagnostics
65