Peripheral device–related symptoms, Infrared–related symptoms, Other symptoms – IBM THINKPAD 760C/CD (9546) User Manual

Page 127: Intermittent problems

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Peripheral Device–Related Symptoms

Symptom / Error

FRU / Action in Sequence

External display does
not work correctly.

1. See “External Display

Self-Test” in “Common
Devices Checkout” section.

Printer problems.

1. Run Printer Self-test.
2. Parallel Port Device

3. Cable
4. System Board

Serial or parallel port
device problems.

1. Device
2. Device Cable
3. System Board

Infrared–Related Symptoms

Symptom / Error

FRU / Action in Sequence

Unable to
communicate using
the Infrared (IR) Port.

1. Make sure the setup for the

IR is correct.

2. Make sure there are no

fluorescent lights near the
computer.
The computer may receive
optical interference from the
fluorescent light.

3. Reseat the IR unit.
4. Run the advanced diagnostic

test. If an error occurs and a
FRU code is displayed,
replace the parts shown by
the FRU code.

Other Symptoms

Note

If you cannot find a symptom or error in this list and
the problem remains, see “Undetermined Problems”
on page 116.

Symptom / Error

FRU / Action in Sequence

Errors occur only
when Port Replicator
is used.

See “Port Replicator Checkout”
in the “Common Devices
Checkout” section.

PCMCIA slot pin is
damaged.

PCMCIA 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 only be
considered when a recurring problem exists.

When analyzing the intermittent problem, do the following:

ThinkPad 365X, 365XD (2625)

115

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