Symptom / Error FRU / Action in Sequence
Serial or parallel port device
problems. 1. Run serial or parallel
port wrap test. (See
the device manual for
the test.)
2. Device
3. Systemboard
4. Devicecable
Power-Related Symptoms
Symptom / Error FRU / Action in Sequence
Power shuts down during
operation. 1. Go to “Power
Systems Checkout”
on page 29.
2. Batterypack
3. Remove the battery
pack and let it cool for
2 hours.
4. DC/DCcard
5. Systemboard
6. Check the power
outlet.
The system does not power
off.
(See “Power Shutdown
Switch” on page 22.)
1. Press the power
shutdown switch.
2. DC/DCcard
3. Systemboard
Other Symptoms
Note: If you cannot find a symptom or an error in this list
and the problem remains, see “Undetermined
Problems” on page 48.
Symptom / Error FRU / Action in Sequence
Errors occur only when the
port replicator is used. See “Port Replicator
Checkout” on page 33.
PC Card slot pin is
damaged. PC Card slots assembly.
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 be
considered only when a recurring problem exists.
When analyzing the intermittent problem, do the following:
1. Run the advanced diagnostic test for the system
board in loop mode at least 10 times.
2. If no error is detected, do not replace any FRUs.
IBM ThinkPad 380XD, 385XD (2635) 47