Read Sharp DV-NC55 (serv.man10) Service Manual online
55
DV-NC55S/H
DV-NC60H
DV-NC60H
FLOW CHART NO.24 DECODER TROUBLESHOOTING (For 2 SCART Hi-Fi and MONO model)
NO
NO
NO
YES
YES
YES
Is voltage 5V applied to the video section power
terminal at pins(24), (29) of IC2501?
Is voltage 12V applied to the audio section power
terminal at pins(14) of IC2501?
Is there SDA and SCL signal applied to pins(21)
and (22) of IC2501?
Check signal line from video and audio function
logic table as shown below.
Check STBY 5V line.
Check STBY 12V line.
Check line between pins(21), (22) of IC2501 and
pins(17), (18) of IC701.
Not output from 21pin connector in video and audio signal.
<Linear Audio Double scart>
INPUT SIGNAL
DECODER CIRCUIT
OUTPUT SIGNAL
MODE
SELECT
(A)
(B)
(C)
(A)
(B)
(C)
(A)
(B)
(C)
(A)
(B)
(C)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
SIG.
FLOW
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
SIG.
FLOW
>
>
>
>
>
>
pin7
pin28
pin13
pin2
pin33
pin11
pin18
pin23
pin7
pin16
pin36
pin2
pin28
pin23
pin18
pin13
pin33
pin36
pin16
pin11
pin25
pin42
pin26
pin30
pin5
pin39
Pin47 of IC701(Y/C video output)
E2(L2) video input
Front video input
Pin11 of IC201 (Audio output)
E2(L2) audio input(L/R-ch)
Front audio input
Tuner video output
E1(L1) video input
Pin47 of IC701(Y/C video output)
Tuner audio output
E1(L1) audio input(L/R-ch)
Pin11 of IC201(Audio output)
E2(L2) video input
E1(L1) video input
Tuner video output
Front video input
E2(L2) audio input (L/R-ch)
E1(L1) audio input (L/R-ch)
Tuner audio output
Front audio input
E1(L1) video output
21PIN CONNECTOR
E1(L1) audio output(L/R-ch)
21PIN CONNECTOR
E2(L2) video output
21PIN CONNECTOR
E2(L2) audio output(L/R-ch)
21PIN CONNECTOR
Pin31 of IC201
Y/C video input
(Aux. input)
Pin9 of IC201
Audio input
INPUT
(switch)
OUTPUT
<Hi-Fi Audio Double scart>
INPUT SIGNAL
DECODER CIRCUIT
OUTPUT SIGNAL
MODE
SELECT
(A)
(B)
(C)
(A)
(B)
(C)
(A)
(B)
(C)
(A)
(B)
(C)
(A)
(B)
(C)
(A)
(B)
(C)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
(A)
(B)
(C)
(D)
SIG.
FLOW
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
SIG.
FLOW
>
>
>
>
>
>
>
>
>
pin7
pin28
pin13
pin2
pin33
pin11
pin1
pin34
pin10
pin18
pin23
pin7
pin16
pin36
pin2
pin15
pin37
pin1
pin28
pin23
pin18
pin13
pin33
pin36
pin16
pin11
pin34
pin37
pin15
pin10
pin25
pin42
pin43
pin26
pin30
pin31
pin5
pin39
pin40
Pin47 of IC701(Y/C video output)
E2(L2) video input
Front video input
Pin58 of IC6301 (Audio output L-ch)
E2(L2) audio input(L/R-ch)
Front audio L-ch input
Pin56 of IC6301(Audio output R-ch)
E2(L2) audio input(R-ch)
Front audio R-ch input
Tuner video output
E1(L1) video input
Pin47 of IC701(Y/C video output)
MPX output(L-ch)
E1(L1) audio input(L-ch)
Pin58 of IC6301(Audio output L-ch)
MPX output(R-ch)
E1(L1) audio input(R-ch)
Pin56 of IC6301(Audio output R-ch)
E2(L2) video input
E1(L1) video input
Tuner video output
Front video input
E2(L2) audio input (L-ch)
E1(L1) audio input (L-ch)
MPX output(L-ch)
Front audio L-ch input
E2(L2) audio input (R-ch)
E1(L1) audio input (R-ch)
MPX output (R-ch)
Front audio R-ch input
E1(L1) video output
21PIN CONNECTOR
E1(L1) audio output(L-ch)
21PIN CONNECTOR
E1(L1) audio output(R-ch)
21PIN CONNECTOR
E2(L2) video output(L-ch)
21PIN CONNECTOR
E2(L2) audio output(L-ch)
21PIN CONNECTOR
E2(L2) audio output(R-ch)
21PIN CONNECTOR
Pin31 of IC201
Y/C video input
(Aux. input)
Pin61 of IC6301
(Aux. input)
Pin52 of IC6301
(Audio input (R-ch)
INPUT
(switch)
OUTPUT
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