Read Sharp DV-NC65H (serv.man15) Service Manual online
59
DV-NC65H/S
DV-NC70H
DV-NC70H
FLOW CHART NO.27: NICAM/IGR TROUBLESHOOTING
NO
YES
NO
NO
YES
Is there a base band signal at SIF OUT of
TU101.
Is there a base band signal at pin(2) of IC1701?
NO
Check peripheral circuit of X1701.
Check peripheral circuit of TU101.
Check between SIF OUT of TU101 and pin(2)
of IC1701
No NICAM/IGR sound.
NO
NO
YES
YES
YES
Is there a NICAM/IGR audio signal at pins(31),
(30) of IC1701?
Is there a NICAM/IGR audio signal at pins(15),
(16) of IC2501?
Check PC 5V line..
Is 5V supplied at pins(11), (19), (1) of IC1701?
Is MPX 8V supplied at pin(33) of IC1701?
YES
Check line between pins(39), (40) of IC2501
and pins(9), (14) of IC651.
YES
Check AT 12V line.
YES
Check peripheral circuit of IC1701.
YES
Replace IC1701.
YES
Is there oscillated 18.432MHz at pins(5), (6)
of IC1701?
NO
Check Q1701, Q1702 and D1701.
NO
See FLOW CHART NO.22
<Hi-Fi E-E SOUND
TROUBLESHOOTING>
Check serial data and clock at pin(12) and (13)
of IC1701.
Check between PLL Data
pins(26), (27) of IC701 and
pins(12), (13) of IC1701.
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