Toshiba DVR610 - DVDr/ VCR Combo Service Manual page 29

FLOW CHART NO.7
Audio E-E does not appear normally.
Are the audio signals inputted to each pin of
IC2801?
IC2801 4,11PIN AUDIO-IN1 (REAR)
IC2801 5,14PIN AUDIO-IN2 (FRONT)
Are the audio signals outputted to Pin(3,13) of
IC2801?
Are the audio signals outputted to Pin(1,7) of
IC2803?
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
No
Yes
No
Yes
No
Yes
No
Yes
No
No
Check the line between audio input terminal and
No each pin of IC2801, and replace P1 (BOARD MCV)
if defective.
→ JK2804
IC2801 4,11PIN
→ JK1232, JK1233
IC2801 5,14PIN
No
Are active level of Pin(9,10) of IC2801 become
as shown below?
INPUT
LINE(REAR)
LINE(FRONT)
Yes
Replace P1
(BOARD MCV).
No
Replace P1 (BOARD MCV).
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
MCV) if defective.
CN2201 17PIN → IC2804 2PIN AUDIO(L)-OUT
CN2201 15PIN → IC2804 6PIN AUDIO(R)-OUT
Replace P2 (DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
Replace P1 (BOARD MCV).
Check the periphery between Pin(1,7) of IC2804
and the audio terminal (JK2805), and replace
P1 (BOARD MCV) if defective.
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).
1-10-8
AUDIO-IN1 (REAR)
AUDIO-IN2 (FRONT)
9PIN 10PIN
H H
L H
No
Check the line between Pin(9,
10) of IC2801 and Pin(60,61)
of IC1501, and replace P1
(BOARD MCV) if defective.
No
No
Check the line between Pin(9,
10, 11) of IC2406 and Pin(55)
of IC1501, and replace P1
(BOARD MCV) if defective.
E9KGATR