Toshiba D-VR7KC Service Manual page 34

FLOW CHART NO.8
Audio is not outputted during playback.
Set the disc on the disc tray, and playback.
Are the audio signals outputted to each pin of
CN2201?
CN2201 17PIN AUDIO (L)-OUT
CN2201 15PIN AUDIO (R)-OUT
Are the audio signals inputted to each pin of
IC2804?
IC2804 2PIN AUDIO (L)-OUT
IC2804 6PIN AUDIO (R)-OUT
Do Pin(18) of CN2201 become "H" level?
Are the audio signals outputted to each pin of
IC2804?
IC2804 1PIN AUDIO (L)-OUT
IC2804 7PIN AUDIO (R)-OUT
Are the audio signals outputted to the specific
output terminal?
Are the audio signals outputted to the audio
terminal (JK2805)?
Are the audio signals outputted to the audio
terminal (JK2751)?
Check the line between Pin(4,14) of IC2406 and
audio terminal (JK2751), and replace P1(BOARD
MCV) if defective.
Yes
Yes
Yes
Yes
Yes
No
Replace P2 (DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
Check each line between each pin of CN2201
and each pin of IC2804, and replace P1 (BOARD
No
MCV) if defective.
CN2201 17PIN → IC2804 2PIN AUDIO(L)-OUT
CN2201 15PIN → IC2804 6PIN AUDIO(R)-OUT
No
Replace P2 (DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
No
Replace P1 (BOARD MCV).
Check the line between Pin(1,7) of IC2804
No
and the audio terminal (JK2805), and replace
P1 (BOARD MCV) if defective.
No
Are the audio signals outputted to Pin(4,14) of
IC2406?
Yes
Are Pin(9,10,11) of IC2406 become "L" level?
Yes
Replace P1
(BOARD MCV).
1-10-11
No
Check the line between Pin(9,
10, 11) of IC2406 and Pin(55)
of IC1501, and replace P1
(BOARD MCV) if defective.
E9KG0TR
No