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2 Troubleshooting 2.4 System Board
Procedure 2 Test Program Check
The maintenance test program contains several programs for diagnosing the system board
and CPU. Execute the following test programs using the procedures described in Chapter 3.
1. System test
2. Memory test
3. Keyboard test
4. Display test
5. Hard Disk test
6. Mouse test
7. SD Card/Memory stick test
8. ODD test
9. Sound test
10. LAN test
If an error is detected during these tests, go to Procedure 3.
Procedure 3 Replacement Check
The system board, memory, or CPU may be defective. Disassemble the computer following
the steps described in Chapter 4 and replace the system board, memory module or CPU with
a new one.
2-10 Satellite M40/M45 TECRA A4 dynabook Vx/4 Maintenance Manual