AV Stereo
Select correct system
In menu
OKOK
Check the connection
Of AV equipment
AVCheck the the waveformNO
At pin47 of IC661Check TU101 Tuner
OKOK
NO
Check the waveformCheck the voltage
At pin 24, 25, of IC661Of pin16,20
OK
Check waveformCheck / ReplaceNO
At pin 4, 12 of IC602IC602
OK
Check the voltageCheck / ReplaceNO
At pin6,7 of IC602Q621, IC603
OK
NONO
Check the waveformCheck the vpltageCheck /Replace
At pin 1,2,14,15 of IC602At pin3, 13 of IC602F851, D862
OK
Replace IC 602
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