TP 765D/L - Undetermined Problems

4.230 bytes

Service Hints & Tips

Document ID: GKEY-3JRJZK

TP 765D/L - Undetermined Problems

Applicable to: World-Wide

Undetermined Problems

You are here because the diagnostic tests did not identify which adapter or device failed, installed devices are incorrect,a short circuit is suspected, or the system is inoperative.
Follow these procedures to isolate the failing FRU (do not replace nondefective FRUs).

Verify all attached devices are supported by the computer.
Verify the power supply being used at the time of the failure is operating correctly. (See -- Power Systems Checkout --.)

1.

Power off the computer.

2.

Check the cables, wires, and connectors for short circuits and open circuits. Visually check them for damage.
If any problems are found, replace the FRU.

3.

Remove or disconnect all of the following devices:

a.

Non-IBM devices

b.

Devices attached to the expansion bus connector

c.

Printer, mouse, and other external devices

d.

Battery pack

e.

Hard disk drive

f.

Diskette drive or CD-ROM drive

g.

DIMM

h.

PC Cards

4.

Power on the computer.

5.

Determine if the problem has changed.

6.

f the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.

7.

If the problem remains, replace the following FRUs one at a time. Do not replace a nondefective FRU.
ñ DC/DC card
ñ Video card
ñ Keyboard card
ñ LCD assembly
ñ System board
ñ DSP card or audio (ESS) card
ñ CPU card

Search Keywords

Hint Category

Hardware Maintenance Information

Date Created

07-07-97

Last Updated

19-08-98

Revision Date

18-08-99

Brand

IBM ThinkPad

Product Family

ThinkPad 765L, ThinkPad 765D

Machine Type

9546, 9547

Model

Various

TypeModel

Retain Tip (if applicable)

Reverse Doclinks
and Admin Purposes

1.	Power off the computer.
2.	Check the cables, wires, and connectors for short circuits and open circuits. Visually check them for damage. If any problems are found, replace the FRU.
3.	Remove or disconnect all of the following devices:
a.	Non-IBM devices
b.	Devices attached to the expansion bus connector
c.	Printer, mouse, and other external devices
d.	Battery pack
e.	Hard disk drive
f.	Diskette drive or CD-ROM drive
g.	DIMM
h.	PC Cards
4.	Power on the computer.
5.	Determine if the problem has changed.
6.	f the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7.	If the problem remains, replace the following FRUs one at a time. Do not replace a nondefective FRU. ñ DC/DC card ñ Video card ñ Keyboard card ñ LCD assembly ñ System board ñ DSP card or audio (ESS) card ñ CPU card

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	07-07-97
	Last Updated	19-08-98
	Revision Date	18-08-99
	Brand	IBM ThinkPad
	Product Family	ThinkPad 765L, ThinkPad 765D
	Machine Type	9546, 9547
	Model	Various
	TypeModel
	Retain Tip (if applicable)
	Reverse Doclinks and Admin Purposes