Compaq 113803-001 Power-On Self-Test Post, Post Error Messages, Error Code, Recommended Action

3-4Diagnostic Tools

Power-On Self-Test (POST)

POST is a series of diagnostic tests that run automatically on Compaq computers when the system is turned on. POST checks the following assemblies to ensure that the computer system is functioning properly:

■Processors

■Keyboard

■Power supply

■System board

■Memory

■Memory expansion boards

■Controllers

■Diskette drives

■Hard drives

POST Error Messages

If POST finds an error in the system, an error condition is indicated by an audible and/or visual message. If an error code displays on the screen during POST or after resetting the system, follow the instructions in Table 3-1. The error messages and codes listed in Table 3-1 include all codes generated by Compaq products. Your system generates only those codes that are applicable to your configuration and options.

In each case, the Recommended Action column lists the steps necessary to correct the problem. After completing each step, run the Diagnostics program to verify whether the error condition has been corrected. If the error code reappears, perform the next step, then run the Diagnostics program again. Follow this procedure until Diagnostics no longer detects an error condition.

		Table 3-1
		POST Error Messages
	Audible Beeps
Error Code	L=Long S=Short	Probable Source of Problem
A Critical Error	None	A catastrophic system error,
occurred prior to		which caused the server to
this power-up		crash, has been logged.
101-ROM Error	1L,1S	System ROM checksum.
101-I/O ROM Error	None	Options ROM checksum.
102-System Board	None	DMA, timers, and so on.
Failure
104-ASR-2 Timer	None	System board failure.
Failure

Recommended Action

Run Diagnostics. Replace failed assembly as indicated.

Run Diagnostics. Replace failed assembly as indicated.

Run Diagnostics. Replace failed assembly as indicated.

Replace the system board. Run the Compaq System Configuration Utility.

Run Diagnostics. Replace failed assembly as indicated.

Continued