Toshiba RD-XV47KE Service Manual page 31

FLOW CHART NO.6
Audio E-E does not appear normally.
Are the audio signals inputted to each pin of
IC1509?
IC1509 93,94PIN AUDIO-IN1 (AV1)
IC1509 91,92PIN AUDIO-IN1 (FRONT)
IC1509 89,90PIN AUDIO-IN2 (AV2)
IC1509 84,85PIN TUNER-AUDIO
Yes
Are the audio signals outputted to Pin(79,80) of
IC1509?
Yes
Are the audio signals outputted to Pin(1,7) of
IC1506?
Continued to B on the next page.
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No (Rear
or Front
input)
No (Tuner)
No
No
1-11-8
Check the line between audio input terminal and
each pin of IC1509, and service it if defective.
→JK1504
IC1509 93,94PIN
→JK3002,
IC1509 91,92PIN
JK3003
→JK2001
IC1509 89,90PIN
Is SIF signal inputted to Pin(2) of IC1?
Yes
Are the audio signal outputted
to Pin(30,31) of IC1?
Yes
Check the line between
Pin(30,31) of IC1 and
Pin(84,85) of IC1509, and
service it if defective.
Is 5V voltage supplied to Pin(27,29,47,63) of
IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
Yes
Check the AL+5V(2) , AL+9V
Replace IC1509
line and service it if defective.
Replace IC1506.
AUDIO-IN1 (AV1)
AUDIO-IN1 (FRONT)
AUDIO-IN2 (AV2)
No
Replace TU1501.
No
Replace IC1.
No
E3B90TR