Acer Aspire L100 Service Manual page 74

Error Symptom
Execute "Load BIOS Default Settings" in BIOS Setup to confirm ports presence before diagnosing any
parallel/serial ports problems.
Serial or parallel port loop-back test
failed.
Printing failed.
Printer problems.
Some or all keys on keyboard do not
work.
Pressing power switch does not turn off
system. (Only unplugging the power
cord from electrical outlet can turn off the
system.)
Pressing power switch does not turn on
the system.
Executing software shutdown from
Windows98 Start menu does not turn off
the system. (Only pressing power switch
can turn off the system).
No system power, or power supply fan is
not running.
Any other problems.
70
Parallel/Serial Ports
1. Make sure that the LPT# or COM# you test is the same
as the setting in BIOS Setup.
2. Loop-back.
3. Main board.
1. Ensure the printer driver is properly installed. Refer to the
printer service manual.
2. Printer.
3. Printer cable.
4. Main board.
1. Refer to the service manual for the printer.
Keyboard
1. Keyboard
Power Supply
1. Ensure the Soft-off by PWR-BTTN. in BIOS Setup
of Power Management is not set to Instant-off.
2. Power switch cable assembly
1. Ensure the power override switch (situated at the back of
the machine, just above the connector for the power
cable) is not set to OFF.
2. Power switch cable assembly.
1. Load default settings.
2. Reload software from Recovery CD.
1. Power Supply
2. Main board
Other Problems
1. Undetermined Problems
Action/FRU
Chapter 4