Compaq V300 - Manual (Page 43)

Troubleshooting 2-7
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: David Calvert Saved by: The Integrity Group Saved date: 10/26/00 11:45 AM
Part Number: 128679-006 File name: Ch02
Fatal errors emit a beep and may display a FATAL message. Fatal errors
indicate severe problems, such as a hardware failure. Fatal errors do not
allow the system to resume. Some of the Fatal error beep codes are listed
at the end of this section.
Table 2-2
Fatal Error Messages
Message Description Beep code
CMOS RAM test failed A walking bit test of
CMOS RAM location 0E
(Hex) - 3F (Hex) failed. 3
DMA controller faulty A sequential read/write
of the transfer count and
transfer address
registers within the
primary and secondary
DMA controllers failed. 4
Faulty DMA page
registers A walking bit read/write
of the 16 DMA controller
page registers starting at
location 80 Hex failed. 0
Faulty refresh circuits A continuous read/write
test of port 61h found
that bit 4 (Refresh
Detect) failed to toggle
within an allotted amount
of time. 1
Interrupt controller failed A sequential read/write
of various Interrupt
Controller registers
failed. 5
ROM checksum
incorrect A checksum of the ROM
BIOS does not match
the byte value at
F000:FFFF. 2
RAM error at location
xxxx RAM error occurred
during memory test. None
*Beep codes are defined in Table 2-3.