Toshiba D-VR7KC Service Manual page 32

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)
IC2801 2,15PIN TU-AUDIO
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
Continued to B on the next page.
Yes
Yes
Yes
Yes
Yes
1-10-9
Check the line between audio input terminal and
No
each pin of IC2801, and replace P1 (BOARD MCV)
if defective.
IC2801 4,11PIN
IC2801 5,14PIN
No
Is the SIF signal inputted to Pin(21) of IC5001?
Yes
Are the audio signal outputted to Pin(29,30)
of IC5001?
Yes
Check the line between Pin(29,30) of
IC5001 and Pin(2,15) of IC2801, and
replace P1 (BOARD MCV) if defective.
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).
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
→ JK2804
AUDIO-IN1 (REAR)
AUDIO-IN2 (FRONT)
→ JK2800, JK2801
No
Replace TU5001.
No
Replace P1
(BOARD MCV).
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.
E9KG0TR