Procedure 2 Replacement Check - Toshiba Satellite L640 Maintenance Manual

Chapter 2 Troubleshooting Procedures
Procedure 2 Replacement Check
 If External microphone/Headphone does not work properly, perform check 1.
 If internal microphone /Speaker do not work properly, perform check 2.
 If HP o
ut does not work properly, perform c
 If Volume control does not work properly, perform check 4.
Check 1 External microphone/Headphone may be faulty. Replace it with a new one
following the steps in Chapter 4. If the problem still occurs, perform Check 5.
Check 2 Internal microphone /Speaker may be faulty. Replace it with a new one following
the steps in Chapter 4. If the problem still occurs, perform Check 5.
Check 3 HP out may be faulty. Replace it with a new one following the steps in Chapter 4.
If the problem still occurs, perform Check 5.
Check 4 Volume control may be faulty. Replace it with a new one following the steps in
Chapter 4.
Check 5 Flat cables between LCD and system board may be faulty. Replace it with new
cable following the instructions in Chapter 4.
Satellite L600/L640/L645, Satellite Pro L600/Pro L640/Pro L645 Maintenance Manual (960-Q08)
heck 3.