Toshiba DVR80KF Service Manual page 32

Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to
the VIDEO OUT (AV1) terminal (JK1504)?
Are the composite video signals outputted to
the VIDEO OUT (AV2) terminal (JK2001)?
Are the component video signals outputted to
the VIDEO OUT terminal (JK1505)?
FLOW CHART NO.6
Audio E-E does not appear normally.
Are the audio signals inputted to each pin of IC1509?
IC1509 84,85PIN AUDIO-IN1 (AV1)
IC1509 89,90PIN AUDIO-IN2 (AV2)
IC1509 86,87PIN TUNER-AUDIO
IC1509 93,94PIN DTV-AUDIO
Are the audio signals outputted to Pin(79,80) of IC1509?
Are the audio signals outputted to Pin(11,13) of CN1502?
Are the analog audio signals outputted to each pin of
CN1502?
CN1502 17PIN AUDIO (L)-OUT
CN1502 15PIN AUDIO (R)-OUT
Are the analog audio signals inputted to each pin of
IC1509?
IC1509 77PIN AUDIO (L)-OUT
IC1509 76PIN AUDIO (R)-OUT
Continued to C on the next page.
B
Yes
Yes
Yes
Yes
Yes
No Check the periphery of JK1504 from Pin (30) of IC1509
and replace P1(AV ASSEMBLY) if defective.
Check the periphery of JK2001 from Pin (22) of IC1509
No
and replace P1(AV ASSEMBLY) if defective.
Check the periphery of JK1505 from Pin (38, 39, 40) of
No
IC1509 and replace P1(AV ASSEMBLY) if defective.
Check the line between audio input terminal and
each pin of IC1509, and replace P1(AV ASSEMBLY),
P6(BOARD DTV MODULE UNIT) or TU1800 if defective.
IC1509 84,85PIN
No
IC1509 89,90PIN
IC1509 86,87PIN
IC1509 93,94PIN
No
Is 5V voltage supplied to Pin(27,29,47,63) of IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
Yes
Replace P1(AV
ASSEMBLY).
No
Check the line between each pin of IC1509 and
each pin of CN1502, and replace P1(AV ASSEMBLY),
if defective.
IC1509 79PIN
IC1509 80PIN
No
Replace the P2(DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY).
Check each line between each pin of CN1502 and each
pin of IC1509, and replace P1(AV ASSEMBLY) if
defective.
No
→
CN1502 17PIN
→
CN1502 15PIN
1-11-9
→
JK1504 AUDIO-IN1 (AV1)
→
JK2001 AUDIO-IN2 (AV2)
→
TU1800 6PIN TUNER-AUDIO
→
CN1800 29,30PIN DTV-AUDIO
No
Check the ECO+5V, ECO+9V
line and replace P1(AV
ASSEMBLY) or P4(PW/SW
ASSEMBLY) if defective.
→
CN1502 13PIN AUDIO(R)-IN
→
CN1502 11PIN
AUDIO(L)-IN
IC1509 77PIN AUDIO(L)-OUT
IC1509 76PIN AUDIO(R)-OUT
E9TK3TR