IBM 2274 - Manual (Page 73)

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.