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2.7 Keyboard Troubleshooting
2 Troubleshooting Procedures
Satellite A50/TECRA A2 Maintenance Manual (960-478)
2-39
2.7 Keyboard Troubleshooting
To determine if the computer’s keyboard is functioning properly, perform the following
procedures. Start with Procedure 1 and continue with the other procedures as instructed.
Procedure 1: Diagnostic Test Program Execution Check
Procedure 2: Connector Check and Replacement Check
Procedure 1
Diagnostic Test Program Execution Check
Execute the Keyboard Test in the Diagnostic Program. Refer to Chapter 3,
Tests and
Diagnostics
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 Check and Replacement Check
The keyboard or system board may be disconnected or damaged. Disassemble the
computer following the steps described in Chapter 4,
Replacement Procedures
and
perform the following checks:
Check 1
Make sure the keyboard cable is firmly connected to the system board.
If the connection is loose, reconnect firmly and repeat Procedure 1. If there is
still an error, go to Check 2.
Check 2
The keyboard may be damaged. Replace it with a new one following the
instructions in Chapter 4,
Replacement Procedures
. If the problem still exists,
perform Check 3.
Check 3
The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4,
Replacement Procedures
.
Summary of Contents for Tecra A2 Series
Page 10: ...x Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 11: ...Chapter 1 Hardware Overview ...
Page 49: ...Chapter 2 Troubleshooting Procedures ...
Page 50: ...2 Troubleshooting Procedures 2 ii Satellite A50 TECRA A2 Maintenance Manual 960 478 2 ...
Page 54: ...2 Troubleshooting Procedures 2 vi Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 105: ...Chapter 3 Tests and Diagnostics ...
Page 106: ...3 Tests and Diagnostics 3 ii Satellite A50 TECRA A2 Maintenance Manual 960 478 3 ...
Page 197: ...Chapter 4 Replacement Procedures ...
Page 198: ...4 Replacement Procedures 4 ii Satellite A50 TECRA A2 Maintenance Manual 960 478 4 ...
Page 204: ...4 Replacement Procedures 4 viii Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 271: ...Appendices ...
Page 272: ...Appendices App ii Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 290: ...Appendices Apx B Board Layout B 6 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 332: ...Appendices Apx E Key Layout E 2 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 334: ...Appendices Apx F Wiring Diagrams F 2 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 336: ...Appendices Apx G BIOS KBC EC Update G 2 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 338: ...Appendices Apx H Reliability H 2 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...