Compaq Armada M700 Series Maintenance And Service Manual page 37

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.
Message
CMOS RAM test failed
DMA controller faulty
Faulty DMA page registers
Faulty refresh circuits
Interrupt controller failed
ROM checksum incorrect
RAM error at location xxxx
*Beep codes are defined in Table 2-3.
Beep Code Beep Sequence
0 S-S-S-P-S-S-L-P
1 S-S-S-P-S-L-S-P
2 S-S-S-P-S-L-L-P
3 S-S-S-P-L-S-S-P
4 S-S-S-P-L-S-L-P
5 S-S-S-P-L-L-S-P
6 S-S-S-P-L-L-L-P
7 S-S-L-P-S-S-S-P
8 S-S-L-P-S-S-L-P
NOTE: S = Short, L = Long, P = Pause
2-6 Troubleshooting
Table 2-2
Fatal Error Messages
Description
A walking bit test of CMOS RAM location 0E
(Hex) - 3F (Hex) failed.
A sequential read/write of the transfer count
and transfer address registers within the
primary and secondary DMA controllers
failed.
A walking bit read/write of the 16 DMA
controller page registers starting at location
80 Hex failed.
A continuous read/write test of port 61h
found that bit 4 (Refresh Detect) failed to
toggle within an allotted amount of time.
A sequential read/write of various Interrupt
Controller registers failed.
A checksum of the ROM BIOS does not
match the byte value at F000:FFFF.
RAM error occurred during memory test.
Table 2-3
Fatal Error Beep Codes
Description
The DMA page registers are
faulty.
The refresh circuitry is faulty.
The ROM checksum is incorrect.
The CMOS RAM test failed.
The DMA controller is faulty.
The interrupt controller failed.
The keyboard controller failed.
Graphics adapter is faulty.
Internal RAM is faulty.
Beep code
3
4
0
1
5
2
None
Recommended Action
Replace system board.
Replace memory board or
system board if memory on
system board is faulty.