Sharp DV-NC55S - Page 48

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DV-NC55S/H DV-NC60H
FLOW CHART NO.17 Hi-Fi SOUND MODE TROUBLESHOOTING(1) (For Hi-Fi model)
NO
NO
YES
NO
NO
NO
NO
YES
YES
NO
YES
NO
YES
YES
NO
YES
YES
NO
YES
NO
Is there audio signal inputted at
each input terminal as shown in
table?
Tuner input terminal. IC2501 IC2501
pin(16) pin(15)
Decoder signal input IC6301 IC6301
terminal. pin(61) pin(52)
Is there audio signal inputted at
each input terminal of IC201 as
shown in table?
U/V tuner audio input pin(8)
terminal.
Aux input terminal. pin(9)
Is there audio signal outputted
at pins (4), (46) of IC6301?
Is there audio signal outputted
at pins (5), (45) of IC6301?
Check line ranging from pins
(31),(30) of IC1701 (NICAM/GR),
to the each input terminal of
IC2501.
Check line ranging from pins
(39),(40) of IC2501 (decoder
circuit) or audio input terminal to
the each input terminal of IC6301.
Check PC5V and Hi-Fi 9V line.
Replace IC201.
Replace IC6301.
Is the supply voltage of PC 5V
fed to pins(14), (30), (36) and 9V
fed to pin (60) of IC6301?
Are there the serial data and
clock at pins (31) and (32) of
IC6301?
Check line between pins (31),
(32) of IC6301 and pins (26), (27)
of IC701?
Check line between pins (4, 46)
and (5,45) of IC6301.
(C6302, C6320)
Line output terminal: Is there audio signal outputted at pins (58) and (56) of IC6301?
Is there audio signal outputted
at pin (54) of IC6301?
Line output terminal
Check line ranging from pins (58) and (56) of IC6301 to pins (2) and (1) of IC2501.
Is there audio signal outputted
at pins (11), of IC201?
Is there "L" level at pin(99) of
IC201?
Check line between pin (8) of
IC6301 and pin (21) of IC701.
Check line between pin (11) of
IC201 and pin (54) of IC6301.
Check line ranging from A-out pin
(21), of TU1401.
Check line ranging from pin (53)
of IC6301.
YES
NO
Is there "L" level at pin (8) of
IC6301?
NO
Check line between pin(8) of
IC6301 and pin (21) of IC701.
<For Hi-Fi mode> <For normal mode>
No Hi-Fi E-E sound heard