Toshiba D-R560KU Service Manual page 24

FLOW CHART NO.22
Audio E-E does not appear normally.
Are the audio signals inputted to each pin of
IC1101?
IC1101 4,11PIN AUDIO-IN1 (REAR)
IC1101 5,14PIN AUDIO-IN2 (FRONT)
IC1101 2,15PIN TUNER-AUDIO
IC1101 1,12PIN DTV-AUDIO
No (DTV)
Are the audio signal inputted to Pin(15,16)
of CN1752?
Yes
Check the line between
Pin(1,12) of IC1101 and
Pin(15,16) of CN1752,
and replace P1(AV
ASSEMBLY) if defective.
Yes
Are the audio signals outputted to Pin(3,13) of
IC1101?
Are the audio signals outputted to Pin(1,7) of
IC1102?
Continued to B on the next page.
No
Replace P3
(Board DTV
Module Unit).
Yes
No (Rear
Check the line between audio input terminal and
or Front
each pin of IC1101, and service it if defective.
input)
IC1101 4,11PIN
IC1101 5,14PIN
No (Tuner)
Is SIF signal inputted to Pin(21) of IC1701?
Are the audio signal outputted
to Pin(29,30) of IC1701?
Check the line between
Pin(29,30) of IC1701 and
Pin(2,15) of IC1101, and
replace P1(AV ASSEMBLY)
if defective.
No
Are active level of Pin(9,10) of IC1101 become
as shown below?
INPUT
TUNER
LINE(REAR)
LINE(FRONT)
DTV
Yes
Replace P1(AV
ASSEMBLY).
No
Replace P1(AV ASSEMBLY).
1-8-8
→ JK2106
AUDIO-IN1 (REAR)
→ JK2103, JK2104
AUDIO-IN2 (FRONT)
Yes
Replace TU1701.
No
Yes
Replace P1
(AV ASSEMBLY).
9PIN 10PIN
H L
H H
L H
L L
No
Check the line between
Pin(9,10) of IC1101 and
Pin(39,40) of IC1501, and
replace P1(AV ASSEMBLY)
if defective.
No
E7M70TR