T r o u b l e s h o o t i n g
LS700 HANDBOOK 6/3
Boot failure message
Explanation
Fixed disk read failure
The hard disk may be defective. Press F1 to retry. Make
sure the drive is correctly specified in the BIOS setup
utility. If the problem persists, insert a system diskette,
press F1, backup the data held on the defective hard
disk and try reformatting it.
No boot device available This may indicate a fault in the diskette or hard disk
drive, or perhaps a damaged system diskette. Make sure
that the Startup Device options are correctly specified
with the BIOS Setup utility. If the problem persists
contact your supplier or authorised maintainer.
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
80h Code
Description
1
B4h
One short beep before boot
1-2
98h
Search for option ROMs
1-2-2-3
16h
BIOS ROM checksum
1-3-1-1
20h
Test DRAM refresh
1-3-1-3
22h
Test keyboard controller
1-3-4-1
2Ch
RAM failure on address line
xxxx
1-3-4-3
2Eh
RAM failure on data bits
xxxx
of low byte of
memory bus
1-4-1-1
30h
RAM failure on data bits
xxxx
of high byte of
memory bus
2-1-2-3
46h
Check ROM copyright notice
2-2-3-1
58h
Test for unexpected interrupts
