Toshiba DVR610 Service Manual - Page 29

Flow Chart No.7

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FLOW CHART NO.7 Audio E-E does not appear normally. Are the audio signals inputted to each pin of IC2801? No IC2801 4,11PIN AUDIO-IN1 (REAR) IC2801 5,14PIN AUDIO-IN2 (FRONT) Yes Are the audio signals outputted to Pin(3,13) of No IC2801? Yes Are the audio signals outputted to Pin(1,7) of No IC2803? Yes Are the audio signals outputted to each pin of CN2201? No CN2201 17PIN AUDIO (L)-OUT CN2201 15PIN AUDIO (R)-OUT Yes Are the audio signals inputted to each pin of IC2804? No IC2804 2PIN AUDIO (L)-OUT IC2804 6PIN AUDIO (R)-OUT Yes No Do Pin(18) of CN2201 become "H" level? Yes Are the audio signals outputted to each pin of IC2804? IC2804 1PIN AUDIO (L)-OUT No IC2804 7PIN AUDIO (R)-OUT Yes Are the audio signals outputted to the specific output terminal? No Are the audio signals outputted to the audio terminal (JK2805)? Are the audio signals outputted to the audio No terminal (JK2751)? Yes Check the line between Pin(4,14) of IC2406 and audio terminal (JK2751), and replace P1 (BOARD MCV) if defective. Check the line between audio input terminal and each pin of IC2801, and replace P1 (BOARD MCV) if defective. IC2801 4,11PIN → JK2804 AUDIO-IN1 (REAR) IC2801 5,14PIN → JK1232, JK1233 AUDIO-IN2 (FRONT) Are active level of Pin(9,10) of IC2801 become as shown below? INPUT 9PIN 10PIN LINE(REAR) H H LINE(FRONT) L H Yes Replace P1 (BOARD MCV). No Check the line between Pin(9, 10) of IC2801 and Pin(60,61) of IC1501, and replace P1 (BOARD MCV) if defective. 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? No Are Pin(9,10,11) of IC2406 become "L" level? Yes Replace P1 (BOARD MCV). No Check the line between Pin(9, 10, 11) of IC2406 and Pin(55) of IC1501, and replace P1 (BOARD MCV) if defective. 1-10-8 E9KGATR

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1-10-8
E9KGATR
INPUT
LINE(REAR)
LINE(FRONT)
9PIN
10PIN
H
H
L
H
Check the line between Pin(9,
10) of IC2801 and Pin(60,61)
of IC1501, and replace P1
(BOARD MCV) if defective.
Replace P1
(BOARD MCV).
Check the line between Pin(9,
10, 11) of IC2406 and Pin(55)
of IC1501, and replace P1
(BOARD MCV) if defective.
Replace P1
(BOARD MCV).
Yes
No
Audio E-E does not appear normally.
Are the audio signals inputted to each pin of
IC2801?
Check the line between audio input terminal and
each pin of IC2801, and replace P1 (BOARD MCV)
if defective.
Are the audio signals outputted to Pin(3,13) of
IC2801?
Yes
Are the audio signals outputted to Pin(1,7) of
IC2803?
Yes
Yes
Replace P1 (BOARD MCV).
No
No
No
IC2801
AUDIO-IN1 (REAR)
4,11PIN
IC2801
AUDIO-IN2 (FRONT)
5,14PIN
AUDIO-IN1 (REAR)
AUDIO-IN2 (FRONT)
IC2801
→
JK2804
4,11PIN
Are active level of Pin(9,10) of IC2801 become
as shown below?
IC2801
→
JK1232, JK1233
5,14PIN
Are the audio signals outputted to each pin
of CN2201?
CN2201
17PIN
AUDIO (L)-OUT
CN2201
15PIN
AUDIO (R)-OUT
IC2804
1PIN
AUDIO (L)-OUT
IC2804
7PIN
AUDIO (R)-OUT
IC2804
2PIN
AUDIO (L)-OUT
IC2804
6PIN
AUDIO (R)-OUT
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.
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
Are the audio signals inputted to each pin
of IC2804?
Are the audio signals outputted to each pin
of IC2804?
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)?
Yes
Yes
Yes
Yes
No
Yes
Yes
No
No
No
No
No
Are the audio signals outputted to Pin(4,14) of
IC2406?
Are Pin(9,10,11) of IC2406 become "L" level?
No
No
Do Pin(18) of CN2201 become "H" level?
Check the line between Pin(4,14) of IC2406 and
audio terminal (JK2751), and replace P1 (BOARD
MCV) if defective.
FLOW CHART NO.7
Replace P2 (DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
Replace P2 (DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).