Read Sharp VC-MH834 (serv.man3) Service Manual online
54
VC-M314HM
VC-MH834HM
VC-MH834HM
YES
YES
NO
NO
NO
NO
YES
FLOW CHART NO.27 NICAM/IGR TROUBLESHOOTING (For Hi-Fi model)
NO
NO
YES
YES
YES
YES
YES
Is 5V supplied at pins(1
1),(19),(1) of
IC1701?
Check PC 5V line.
Is MPX 8V supplied at pin(33) of IC1701?
Check the REG. circuit of D9905.
Check PC Motor 12V line.
Check peripheral circuit of IC1701.
Replace IC1701.
Check peripheral circuit of X1701.
Is there a NICAM/IGR audio signal
at pins(31), (30) of IC1701?
Is there a NICAM/IGR audio signal
at pin(15),(16) of IC2501?
YES
YES
Check peripheral circuit of
TU1401.
Check between SIF OUT
of
TU1401
and pin(2) of IC1701.
Check serial data and clock at
pin(12) and (13) of IC1701.
Is there oscillated 18.432MHz at
pins(5), (6) of IC1701?
No NICAM/IGR sound.
Is there a base band signal at
pin(2) of IC1701?
Is there a base band signal at SIF
OUT
of
TU1401?
Check line between pin(39), (40) of
IC2501 and pins(52), (61) of IC6301.
Check between IIC Data
pins(26),(27) of IC701 and
pins(12),(13) of IC1701.
NO
NO
See Flow Chart No.21 Hi-Fi SOUND
MODE TROUBLESHOOTING
(1)
For Hi-Fi model
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