Toshiba D-VR40SF Service Manual page 30

FLOW CHART NO.7
Audio E-E does not appear normally.
Are the audio signals inputted to each pin of
IC1518?
IC1518 10,16PIN AUDIO-IN1 (AV1)
IC1518 8,14PIN AUDIO-IN2 (AV2)
IC1518 20,24PIN TUNER-AUDIO
Are the audio signals outputted to Pin(23,27) of
IC1518?
Are the audio signals inputted to each pin of
IC1501?
IC1501 1,12PIN TUNER-AUDIO/AUDIO-IN1,2
IC1501 5,14PIN AUDIO-IN-F (FRONT)
Are the audio signals outputted to Pin(3,13) of
IC1501?
Are the audio signals outputted to Pin(1,7) of
IC1506?
Are the analog audio signals outputted to each pin
of CN1502?
CN1502 14PIN AUDIO (L)-OUT
CN1502 16PIN AUDIO (R)-OUT
Continued to "C" on the next page.
Yes
Yes
Yes
Yes
Yes
Yes
Check the line between audio input terminal and
No (Rear
each pin of IC1518, and service it if defective.
or Front
input)
IC1518 10,16PIN
IC1518 8,14PIN
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(20,24) of IC1518, and
service it if defective.
Is 12V voltage supplied to Pin(2,4) of IC1518?
Yes
Replace IC1518.
No
Check the line between Pin (1,12) of IC1501 and
Pin (23,27) of IC1518, and service it if defective.
No
Check the line between Pin (5,14) of IC1501 and
audio input terminal (JK1202, JK1203), and service
it if defective.
No
Is 5V voltage supplied to Pin(16) of IC1501?
Is -5V voltage supplied to Pin(7) of IC1501?
Yes
Replace IC1501.
No
Replace IC1506.
No
Replace the DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY.
1-10-9
→JK1502
AUDIO-IN1 (AV1)
→JK2001
AUDIO-IN2 (AV2)
Yes
Replace TU1501.
No
Yes
Replace IC1.
No
Check the AL+12V(1) line
and service it if defective.
No
Check the AL+5V(1) and
AL-5V line, and service it if
defective.
No
E9BA1TR