Toshiba RD-87DTKF Service Manual page 27

FLOW CHART NO.23
Audio E-E does not appear normally.
Are the audio signals inputted to each pin of
IC005?
IC005 93,94PIN AUDIO-IN1 (AV1)
IC005 91,92PIN AUDIO-IN1 (FRONT)
IC005 89,90PIN AUDIO-IN2 (AV2)
IC005 81,82PIN DTV-AUDIO-IN
IC005 84,85PIN TUNER-AUDIO
Are the audio signals outputted to Pin(79,80) of
IC005?
Are the audio signals outputted to Pin(1,7) of
IC1203?
Continued to B on the next page.
Yes
Yes
Yes
Check the line between audio input terminal and
each pin of IC005, and service it if defective.
No (Rear,
Front
IC005 93,94PIN
or DTV
IC005 91,92PIN
input)
IC005 89,90PIN
IC005
81,82PIN
No (Tuner)
Is SIF signal inputted to Pin(2) of IC001?
Are the audio signal outputted
to Pin(30,31) of IC001?
Check the line between
Pin(30,31) of IC001 and
Pin(84,85) of IC005, and
service it if defective.
No
Is 5V voltage supplied to Pin(63) of IC005?
Is 9V voltage supplied to Pin(75) of IC005?
Yes
Replace IC005.
No
Replace IC1203.
1-9-8
→JK1206
AUDIO-IN1 (AV1)
→JK1202,
AUDIO-IN1 (FRONT)
JK1203
→JK1207
AUDIO-IN2 (AV2)
→CN1751
DTV-AUDIO-IN
29,30PIN
Yes
Replace TU1701.
No
Yes
Replace IC001.
No
Check the AL+5V(2) , AL+9V
line and service it if defective.
No
E2J70TR