IBM 310ED - Manual (Page 46)

Symptom/Error FRU/Action in Sequence
System hangs
intermittently. 1. Hard disk/diskette/CD-ROM drive
connector
2. Fan (go to “Running Fan
Diagnostics Program” on
page 29).
3. System board
In DOS or
Windows,
multimedia
programs, no
sound comes
from the
computer. (Only
system beeps
are heard at
power-on) 1. Go to “Audio Board Checkout” on
page 6.
2. Audio connector board
3. Chassis (speaker on chassis)
4. System board
Peripheral-Device-Related Symptoms
Symptom/Error FRU/Action in Sequence
External display
does not work
correctly. 1. Use BOTH display mode, press
Fn+F3.
2. System board
Printer problems. 1. Run printer self-test.
2. Printer driver
3. Printer cable
4. Ensure the “On Board
Communication Ports” in the
System Security of BIOS Utility is
correct.
5. System Board
Serial or parallel
port device
problems. 1. Device driver
2. Device cable
3. Device
4. Ensure the “On Board
Communication Ports” in the
System Security of BIOS Utility is
correct.
5. System board
Intermittent Problems
Intermittent system hang problems can be caused by a
variety of reasons that have nothing to do with a hardware
defect, such as cosmic radiation, electrostatic discharge, or
software errors. FRU replacement should only be
considered when a recurring problem exists.
When analyzing the intermittent problem, do the following:
1. Run the diagnostic test for system board at least 10
times.
2. If no error is detected, do not replace any FRUs.
3. If any error is detected, replace the FRU. Rerun the
test to verify that there are no more errors.
22 IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM