T r o u b l e s h o o t i n g
LS700 HANDBOOK 6/3
Beep Codes
The computer uses special audio beep codes to signal certain
hardware faults.
One long beep followed by several short beeps indicates a
video problem. There may be no display on the screen.
Beeps Error Message
Description
1
Refresh Failure
The memory refresh circuitry on the
motherboard is faulty.
2
Parity Error
A parity error occurred in system memory.
3
First Bank Memory
Failure
Memory failure in the first bank of memory.
4
Timer Not Operational
Memory failure in the first bank of memory or
Timer 1 on the motherboard is not
functioning.
5
Processor Error
The processor generated an error.
6
Keyboard Controller
Failure
The keyboard controller may be bad. The
BIOS cannot switch to protected mode.
7
Processor Exception
Interrupt Error
The processor generated an exception
interrupt.
8
Display Memory
Read/Write Error
The system video adapter is either missing or
its memory is faulty. This is not a fatal error.
9
ROM Checksum Error
ROM checksum value does not match the
value encoded in the BIOS.
10
CMOS Shutdown
Register Read/Write
Error
The shutdown register for CMOS RAM
failed.
Troubleshooting checklist
If you encounter a problem with the computer the following
sections suggest checks to make before you alert your dealer,
authorised maintainer or support organisation. The checks
listed cover the causes of common problems.
