Read Sharp VC-MH85 (serv.man4) Service Manual online
51
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
YES
YES
NO
NO
NO
NO
YES
FLOW CHART NO.26 NICAM/IGR TROUBLESHOOTING
NO
NO
YES
YES
YES
YES
YES
IC1701?
Check peripheral circuit of X1701.
YES
YES
Check peripheral circuit of
TU101.
Check between SIF OUT
of
TU101
and pin(2) of IC1701.
Check between IIC Data
pins(26),(27) of IC701 and
pins(12),(13) of IC1701.
NO
NO
Is there a base band signal at SIF
OUT
of
TU101?
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?
Is there a base band signal at
pin(2) of IC1701?
Check line between pin(39), (40) of
IC2501 and pins(9), (14) of IC651.
See Flow Chart No.21 Hi-Fi SOUND
MODE TROUBLESHOOTING
(1)
For Hi-Fi model
Is 5V supplied at pins(1
1),(19),(1) of
Check PC 5V line.
Is MPX 8V supplied at pin(33) of IC1701?
Check the REG. circuit of D962.
Check PC Motor 12V line.
Check peripheral circuit of IC1701.
Replace 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.
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