HP LH 6000 manual Post Routines

Chapter 4 Diagnostics

>002^ POWER Unit

>001 System Boot

Each line includes a brief summary of a log entry, including the log entry number. An "^" on a log entry means the problem is current.

3.To read the complete log for an event, use the arrow keys to select the entry and press Enter. An example of a complete log, providing details about two events, 001 and 008, appears below.

>001 System Boot Entry #001

07 /22 /99

10 :27 :15 System Boot Event

>008^ POWER Unit Entry #008 Critical Pending 07 /22 /99 10 :27 :15 Proc. 2 FRB3 Failure

4.Use the arrow keys to scroll through the entire log.

5.To return to the Event Log menu, press Escape.

6.Press Escape again to return to the Main Menu.

POST Routines

The following Power On Self-Tests (POSTs) are performed during system startup:

Test	Description
Processor Test	Tests the processor's registers. Test failure causes an error message to be
	displayed and the boot process to abort.
System (BIOS) ROM	BIOS ROM chip calculates an eight-bit checksum. Test failure causes an error
Test	code to be displayed and the boot process to abort.
Memory Subsystem	Tests the physical configuration of the memory subsystem. The test checks for
Test	valid memory module combinations. Test failure causes an error code to be
	displayed.
RAM Refresh Timer	Tests the RAM refresh timer circuitry. Test failure causes an error message to be
Test	displayed and the boot process to abort.
Interrupt RAM Test	This test checks the first 64 K of system RAM used to store data corresponding to
	various system interrupt vector addresses. Test failures cause an error message
	to be displayed and the boot process to abort.
CMOS RAM Test	Checks the CMOS RAM for start-up power loss, verifies these CMOS RAM
	checksum(s): ISA, HP, and CMOS RAM checksum. Test failure causes error
	codes to be displayed.

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