T r o u b l e s h o o t i n g
6/2 LS/VS 550 OWNER’S HANDBOOK
5. If the replacement fuse does not blow, reconnect one peripheral
at a time and switch it on. Repeat this step for each peripheral in
turn.
Power-on self-test (POST)
Whenever the computer is turned on, the power-on self-test
(POST) routine tests various hardware components, including
memory, and compares the actual configuration of the computer
with that recorded in configuration (CMOS) memory. During this
time, BIOS sign-on and POST messages are displayed.
A configuration discrepancy could arise if you have just installed or
removed a hardware option (for example, if you have added or
replaced a SIMM). In this case you may be diverted directly into the
BIOS Setup utility.
If POST detects a hardware fault, one or more POST error codes
and messages are displayed. A full list of these is given at the end of
Appendix B,
System BIOS and Setup.
You may also be prompted
to Press the F1 key to continue or Press any key when ready.
The computer may be able to continue despite the error indication
(for example, if a memory chip fails POST, the computer can
continue with less memory).
♦
Your first action should be to turn off the computer, wait at
least 30 seconds, and then turn it on again to see if the error is
transitory or persistent. Persistent POST errors may indicate a
fault in the system.
♦
Check that all external cables are securely connected.
♦
Try running the BIOS Setup utility to reconfigure the system.
♦
Open up the system unit and check that all internal signal and
power cables are securely connected.
If the problem persists, call your supplier or authorised maintainer.
Beep Codes
The computer uses special audio beep codes to signal certain
hardware faults. If you hear a beep code which is not accompanied
