Toshiba DVR19DTKB2, Service Manual

Page: 32 / 124

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