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Symptom-to-FRU error messages
Symptom or error FRU or action, in
sequence
No beep during POST, but
system runs correctly.
1. Turn the volume up
and check the
speaker.
2. Speaker.
3. Sub card.
4. System board.
Audio-related symptoms
Symptom or error FRU or action, in
sequence
In OS/2, DOS, or Windows
multimedia programs, no
sound comes from the
computer. (Only system
beeps are heard at
power-on.)
Check that the device
driver is installed
correctly.
CD-ROM-related symptoms
Symptom or error FRU or action, in
sequence
You hear a noise from the
CD-ROM drive when the
CD-ROM is spinning.
1. CD-ROM drive.
2. System board.
The CD-ROM tray does not
open even if you press the
CD-ROM eject button.
Insert a pin into the
CD-ROM emergency eject
hole, and eject the CD-ROM
tray.
24 ThinkPad 600X Hardware Maintenance Manual