710CDT/720CDT
2-27
2.7
Keyboard Troubleshooting
To determine if the computer's keyboard is functioning properly, perform the following proce-
dures starting with Procedure 1. Continue with the other procedures as instructed.
Procedure 1:
Diagnostic Test Program Execution Check
Procedure 2:
Connector and Replacement Check
Procedure 1
Diagnostic Test Program Execution Check
Execute the Keyboard Test in the Diagnostic Program. Refer to
Chapter 3
,
Tests and Diagnos-
tics
, for more information on how to perform the test program.
If an error occurs, go to Procedure 2. If an error does not occur, the keyboard is functioning
properly.
Procedure 2
Connector and Replacement Check
The keyboard is connected to the IPS board by a flat cable, and the IPS board is connected to
the system board. This cable or connector may be disconnected or damaged. Disassemble the
computer as described in
Chapter 4
,
Replacement Procedures
, and perform the following
checks:
Check 1
Make sure the keyboard cable is not damaged and is connected to the IPS board.
PJ702
Keyboard
IPS board PJ700
PJ600 System board
PJ701
If this cable is damaged, replace the keyboard with a new one. If the cable is
disconnected, connect it firmly. Perform Procedure 1 again. If the keyboard is still
not functioning properly, perform Check 2.
Check 2
The IPS board may be damaged. Replace the IPS board with a new one. Refer to
Chapter 4
,
Replacement Procedures
for more information. If the keyboard is still
not functioning properly, perform Check 3.
Check 3
The keyboard controller on the system board may be damaged. Replace the system
board with a new one. Refer to
Chapter 4
,
Replacement Procedures
for more
information.
Содержание Tecra 710CDT
Страница 186: ...710CDT 720CDT B 1 Appendix B Board Layouts B 1 System Board Front View Figure B 1 System board layout front ...
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Страница 215: ...E 2 710CDT 720CDT E 3 German GR Keyboard Figure E 3 GR keyboard E 4 French FR Keyboard Figure E 4 FR keyboard ...
Страница 216: ...710CDT 720CDT E 3 E 5 Spanish SP Keyboard Figure E 5 SP keyboard E 6 Italian IT Keyboard Figure E 6 IT keyboard ...
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