Checking order when there is no audio
1. Check the contact condition of or 20V connector of Main Board.
2. Measure the 20V input voltage supplied from Power Board.
(If there is no input voltage, remove and check the connector.)
3. Connect the tester P5400 to the speaker terminal and if you hear the ‘Chik~ Chik~’
sound when you touch the GND and output terminal, the speaker is normal.
Voltage and speaker checking method
when there is no audio
A12
A12
①
③
②
C. Audio error_No audio/Normal video
Error
symptom
Established
date
Revised
date
Standard Repair Process Detail Technical Manual
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