Toshiba Satellite M640 Maintenance Manual page 85

2Troubleshooting Procedures
following procedures. Figure 2-24 outlines the process. Start with Procedure 1 and continue
with the other procedures as instructed.
Procedure 1: Diagnostic test
Procedure 2: Replacement check
Procedure 1 Diagnostic test
Run the functioning Program on Windows model, which will display the 3D test result.
If tests and diagnostics result abnormal go to Procedure 2. If an error is not located, the 3D
functioning is properly.
Procedure 2 Replacement check
Disassemble the computer following the steps described in Chapter 4, Replacement
Procedures, and perform the following checks.
Check 1 Make sure that 3D sensor test operation is correct, go to Check 2.
Check 2 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4.
Satellite/Satellite Pro M600/M640/M645/M647 Series/Dynabook TX/AX Series Maintenance Manual 53