Lenovo ThinkPad 380ED HMM ThinkPad 380XD,385XD (May 1998) - Page 55

Power-Related Symptoms, Other Symptoms, Intermittent Problems, at least 10 times

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Symptom / Error Serial or parallel port device problems. FRU / Action in Sequence 1. Run serial or parallel port wrap test. (See the device manual for the test.) 2. Device 3. System board 4. Device cable Power-Related Symptoms Symptom / Error FRU / Action in Sequence Power shuts down during operation. 1. Go to "Power Systems Checkout" on page 29. 2. Battery pack 3. Remove the battery pack and let it cool for 2 hours. 4. DC/DC card 5. System board 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/DC card 3. System board Other Symptoms Symptom / Error Errors occur only when the port replicator is used. PC Card slot pin is damaged. FRU / Action in Sequence See "Port Replicator Checkout" on page 33. PC Card slots assembly. Note: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems" on page 48. 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

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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.
System board
4.
Device cable
Power-Related Symptoms
Symptom / Error
FRU / Action in Sequence
Power shuts down during
operation.
1.
Go to “Power
Systems Checkout”
on page
29.
2.
Battery pack
3.
Remove the battery
pack and let it cool for
2 hours.
4.
DC/DC card
5.
System board
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/DC card
3.
System board
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