HP LH 6000 manual Beep Codes

Chapter 4Diagnostics

Test	Description
Cache Memory Test	Tests the processor's on-chip (internal) cache RAM. Test failure causes an error
	message to be displayed and the boot process to abort.
Keyboard/Mouse	Checks for proper operation of the Keyboard/Mouse Controller. Test failure
Controller Test	causes an error code to be displayed.
Timer 0/Timer 2 Test	Tests Timer 0 and Timer 2. Test failure causes an error code to be displayed.
DMA Sub-system Test Checks the DMA controller registers. Test failure causes an error code to be
	displayed.
Interrupt Controller	Tests the interrupt masks, the master controller interrupt path (by forcing an
Test	IRQ0), and the industry-standard slave controller (by forcing an IRQ8). Test failure
	at any point causes an error code to be displayed.
RAM Address Line	Verifies the address independence of real-mode RAM (that address lines are not
Independence Test	stuck together). Test failure causes an error code to be displayed.
Real-Mode Memory	Read/write test on system real-mode RAM. The test checks each block of system
Test (First 640 K)	RAM to determine how much is present and displays the current base value upon
	successful completion of the test. Test failure of a 64 K block of memory causes
	an error code to be displayed and the remainder of the memory test to be
	skipped.
Shadow RAM Test	Tests Shadow RAM in 64-Kbyte segments, except for the segments beginning at
	A000h, B000h, and F000h. If they are not being used, segments C000h, D000h,
	and E000h are tested. Test failure causes an error code to be displayed.
Real-Time Clock Test	Checks the real-time clock registers and performs a test that ensures the clock is
	running. Test failure causes an error code to be displayed.
Keyboard Test	Invokes built-in keyboard self-test of keyboard's microprocessor and tests for
	stuck keyboard keys. Test failure causes an error code to be displayed.
Mouse Test	Invokes built-in mouse self-test of mouse's microprocessor and tests for stuck
	mouse buttons. Test failure causes an error code to be displayed.
Flexible Disk	Tests for proper operation of the flexible disk controller. Test aborts after the first
Controller Subsystem	error is found and will not test any further. Test failure causes an error code to be
Test	displayed.
Internal Numeric	Checks for proper operation of the numeric coprocessor part of the processor.
Coprocessor Test	Test failure causes an error message to be displayed and the boot process to
	abort.
Serial Port Test	Tests the embedded serial port registers. Test failure causes an error code to be
	displayed.
Parallel Port Test	Tests the one embedded parallel port, if it is enabled. Test failure causes an error
	code and an error message to be displayed.
Hard Disk Subsystem	Tests for proper operation of the hard disk controller and performs a read-verify of
Test	a sector on the disk. Test aborts after the first error is found and will not test any
	further. Test failure causes an error code to be displayed.
System Configuration	Checks for configuration errors and checksums accessory ROMs. Test failure
Tests	causes an error code to be displayed.

Beep Codes

If the POST routines cannot display messages when an error occurs before the video display is initialized, the server emits a series of beeps. This means that if on boot you get a blank screen, but hear beeps, you should refer to the table below to interpret the beeps.

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