Toshiba NB300 Maintenance Manual page 73

2 Troubleshooting Procedures
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.
NB300/305 Series Maintenance Manual
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