Toshiba D-VR40SF Service Manual page 38

"E"
Are the video signals outputted to each pin
of IC1518?
IC1518 29PIN VIDEO-OUT 1 (AV1)
IC1518 30PIN VIDEO-OUT 2 (AV2)
Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to the
VIDEO-OUT terminal (JK1502)?
Are the composite video signals outputted to the
VIDEO-OUT terminal (JK2001)?
FLOW CHART NO.11
Hi-Fi E-E audio does not operate 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?
Continued to "F" on the next page.
Yes
Yes
Yes
Yes
Yes
No
Is 12V voltage supplied to Pin(2,4) of IC1518?
Yes
Replace IC1518.
No
Check the periphery of JK1502 from Pin(29) of
IC1518 and service it if defective.
Check the periphery of JK2001 from Pin(30) of
No
IC1518 and service it if defective.
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.
No
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.
1-10-17
No
Check the AL+12V(1) line
and service it if defective.
→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