IBM 2274 Personal Computer User Manual


 
Check Procedures 39
If you are unable to correct the problem using these
two index tables, go to Undetermined Problems on
page 74.
NOTE:
1. If an error message and incorrect audio response
occur, diagnose the error message first.
2. If you cannot run the diagnostics program tests but
did receive a POST error code and message, use
Table 2-1 POST Error Codes and Messages List
on page 40 to diagnose system problems.
3. If you cannot run the diagnostics program tests but
did receive a POST error beeps, use See Table 2-
2 BIOS Error Beeps List on page 44 to diagnose
system problems.
4. If you did not receive any error message, look for a
description of your error symptoms in Table 2-3
Error Symptoms List on page 45.
IMPORTANT: Check all power supply voltages,
switch, and jumper settings before you replace
the system board. Also check the power supply
voltages if you have a system no-power
condition.
5. If you are unable to correct the problem by using
the BIOS Error Codes, Messages, And Beeps
List table and Error Symptoms List table, go to
Undetermined Problems on page 74.