FUNAI DRVR-B778S, Руководство по обслуживанию

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1-11-17 E9G01TR
FLOW CHART NO.11
Hi-Fi E-E audio does not operate normally.
No
Check the periphery of JK1502 from Pin(29) of
IC1518 and service it if defective.
Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to the
VIDEO-OUT terminal (JK1502)?
Are the composite video signals outputted to the
VIDEO-OUT terminal (JK2001)?
Yes
IC1518 29PIN VIDEO-OUT 1 (AV1)
IC1518 30PIN VIDEO-OUT 2 (AV2)
Are the video signals outputted to each pin
of IC1518?
No
No
Check the periphery of JK2001 from Pin(30) of
IC1518 and service it if defective.
No
Check the AL+12V(1) line
and service it if defective.
Replace IC1518.
Yes No
Is 12V voltage supplied to Pin(2,4) of IC1518?
"E"
Is SIF signal inputted to Pin(2) of IC1?
Are the audio signal outputted
to Pin(30,31) of IC1?
Replace TU1501.
Replace IC1.
Yes
Check the line between
Pin(30,31) of IC1 and
Pin(20,24) of IC1518, and
service it if defective.
Yes
No
No
Check the AL+12V(1) line
and service it if defective.
Replace IC1518.
Yes No
Are the audio signals inputted to each pin of
IC1518?
Check the line between audio input terminal and
each pin of IC1518, and service it if defective.
Check the line between Pin (1,12) of IC1501 and
Pin (23,27) of IC1518, and service it if defective.
Are the audio signals outputted to Pin(23,27) of
IC1518?
Yes
Yes
Yes
Yes
No (Rear
input)
No (Tuner)
No
No
Check the line between Pin (5,14) of IC1501 and
audio input terminal (JK1202, JK1203), and service
it if defective.
No
IC1518 AUDIO-IN1 (AV1) 10,16PIN
IC1518 AUDIO-IN2 (AV2) 8,14PIN
IC1518 TUNER-AUDIO 20,24PIN
Are the audio signals inputted to each pin of
IC1501?
IC1501 TUNER-AUDIO/AUDIO-IN1,2 1,12PIN
IC1501 AUDIO-IN-F (FRONT) 5,14PIN
IC1518
→
JK1502 10,16PIN
IC1518
→
JK2001 8,14PIN
AUDIO-IN1 (AV1)
AUDIO-IN2 (AV2)
Is 12V voltage supplied to Pin(2,4) of IC1518?
Check the AL+5V(1) and
AL-5V line, and service it if
defective.
Replace IC1501.
Yes No
Are the audio signals outputted to Pin(3,13) of
IC1501?
Is 5V voltage supplied to Pin(16) of IC1501?
Is -5V voltage supplied to Pin(7) of IC1501?
Continued to "F" on the next page.