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
Are the audio signals outputted to Pin(79,80) of
IC1509?
Are the audio signals outputted to Pin(1,7) of
IC1506?
Continued to B on the next page.
Yes
Yes
Check the line between audio input terminal and
each pin of IC1509, and service it if defective.
No (Rear
IC1509 93,94PIN
or Front
IC1509 91,92PIN
input)
IC1509 89,90PIN
No (Tuner)
Is SIF signal inputted to Pin(2) of IC1?
Are the audio signal outputted
to Pin(30,31) of IC1?
Check the line between
Pin(30,31) of IC1 and
Pin(84,85) of IC1509, and
service it if defective.
No
Is 5V voltage supplied to Pin(27,29,47,63) of
IC1509?
Is 9V voltage supplied to Pin(75) of IC1509?
Yes
Replace IC1509
No
Replace IC1506.
1-11-8
→JK1504
AUDIO-IN1 (AV1)
→JK3002,
AUDIO-IN1 (FRONT)
JK3003
→JK2001
AUDIO-IN2 (AV2)
Yes
Replace TU1501.
No
Yes
Replace IC1.
No
Check the AL+5V(2) , AL+9V
line and service it if defective.
No
E3B90TR