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8.0 - REPAIR PROCEDURE FLOWCHART – AUDIO CIRCUIT
Without sound
Models CR20310/29411
Check IC101
No
C404
Models CR14300/20300
C404
No
R445/430
Q430
No
C440/431R432
IC490 or VCC
No
IC101 C409
No
All manuals and user guides at all-guides.com
IC101 pin 43
Signal.
OK ?
Yes
IC101 pin 28
Signal .
OK ?
Yes
IC 490 pin
14 Signal.
OK ?
Yes
IC 490 pin 13
signal.
OK ?
Yes
IC101 pin 43
Signal.
OK ?
Yes
Check IC
401 and Mute
Check: IC450 pin 6
No
and 47 signals.
OK ?
Yes
Check IC 410
and around
components.
Check
R453 and R454
24
Connect the AV
Input signal.
OK ?
No
Yes
Check IC450 pin
29 signal .
Check : IC450
No
Pins 26 and 27.
OK ?
Yes
Replace
IC 450
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