Read Sharp VC-S2000 (serv.man2) Service Manual online
46
VC-S2000HM
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
YES
NO
NO
YES
NO
NO
NO
NO
NO
NO
YES
NO
FLOW CHART NO.21 Hi-Fi SOUND MODE TROUBLESHOOTING(1)
Is there audio signal inputted at each input
terminal as shown in table?
L-ch R-ch
Check line ranging from pins(31), (30) of
IC1701(NICAM/IGR), to the each input
terminal of IC2501.
Check line ranging from front audio input
terminal(J2151), 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.
Is the supply voltage of 5V fed to pins(14),
(30), (36) and 9V fed to pin(60) of IC6301?
Check line between pin(8) of IC6301 and
pin(21) of IC701.
Is there audio signal outputted at pin(11) of
IC201?
Check line between pin(11) of IC201 and
pin(54) of IC6301.
Is there "L" level at pin(8) of IC6301?
Check line between pin(8) of IC6301 and
pin(21) of IC701.
Is there audio signal inputted at pin(54) of
IC6301?
Line output terminal : Is there audio signal outputted at pins(58) and (56) of IC6301?
RF output terminal : Is there audio signal outputted at pin(57) of IC6301?
Line output terminal :
Check line ranging from pins(58) and (56) of IC6301 to pins(2) and (1) of IC2501.
RF output terminal :
Check line ranging from pin(57) of IC6301 to the audio input terminal pin(21) of tuner(TU1401).
Are there the serial data and clock at pins
(31) and(32) of IC6301?
Is there audio signal outputted at pins(4), (46)
of IC6301?
Check line between pins(31), (32) of IC6301
and pins(27), (28) of IC701.
Check line between pins(4, 46) and (5, 45) of
IC6301. (C6302, C6320)
Is there audio signal inputted at pins(5), (45)
of IC6301?
Check PC 5V and PC 9V lines.
<For Hi-Fi mode>
NO
NO
Is there audio signal inputted at each input
terminal of IC201 as shown in table?
U/V tuner audio input terminal.
Normal input terminal.
pin(8)
pin(9)
Check line ranging from A-out pin(21) of
TU1401.
Check line ranging from pin(53) of IC6301.
Replace IC201.
Replace IC6301.
Is there "L" level at pin(99) of IC201?
<For normal audio mode>
No Hi-Fi E-E sound heard.
Decoder signal input
terminal.
IC6301 IC6301
pin(61) pin(52)
Front A/V input terminal.
IC2501 IC2501
pin(11) pin(10)
Tuner input terminal.
IC2501 IC2501
pin(16) pin(15)
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