Maintenance Manual (960-948) 2-22
Troubleshooting Procedures
Procedure 3: Replacement Check
2.13.1 Procedure 1 Check on Windows OS
This procedure checks if the Sound is working properly by using the
function of Windows.
If any error is detected, go to Procedure 2.
2.13.2 Procedure 2 Connector Check
The connection of sound system is shown in the following figure.
As the connection may be defective, disassemble the computer and check
each connection.
If the problem still occurs, go to Procedure 3.
2.13.3 Procedure 3 Replacement Check
■ If headphone (HP/Mic Combo Jack in) does not work properly, perform
Check 1.
■ If external microphone does not work properly, perform check 2.
■ If built-in microphone (Web camera) does not work properly, perform
check 3.
■ If Speaker Right does not work properly, perform check 4.
■ If Speaker Left does not work properly, perform check 5.
Check 1
Headphone (HP/Mic Combo Jack in) may be faulty. Replace it
with a new one following the steps in Chapter 4, Replacement
Procedures. If the problem still occurs, perform Check 6.
Check 2
External microphone (HP/Mic Combo Jack in) may be faulty.
Replace it with a new one following the steps in Chapter 4,
Replacement Procedures. If the problem still occurs, perform
Check 6.
Check 3
Speaker Left
CN5390
CN6290
Built-in microphone
(attached to Web camera)
Speaker Right
Headphone/
Mic combo jack
<System board>
J6320
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