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3-32
ELECTRICAL TROUBLESHOOTING GUIDE
CD FUNCTION
Check FFC cable
to CN404, CN405.
Is motor_open/ close OK?
(IC408 Pin9,10)
Check IC408.
PD(CN404 Pin2)
about 180 mV?
Check IC501.
Check Loading motor.
Check IC501.
OPU driving
(Focusing & Tracking) OK?
Check OPU.
(Pick-up module)
Is motor impedance
about 12
Ω
?
IC407
Pin34,35,36 I2S output
signal OK?
Can
disc insert?
IC501
Pin95,96,97 I2S input
signal OK?
Disc reading OK?
NO
NO
NO
NO
NO
NO
NO
NO
NO
IC407
RF & Servo signal
OK?
Focusing/
Tracking/ Sled signal
OK?
LOAD +- OK?
YES
YES
YES
YES
YES
NO
YES
YES
YES
A
3. NO AUDIO PART
Summary of Contents for CM9730
Page 11: ...MEMO 1 10 ...
Page 13: ...MEMO 2 2 ...
Page 59: ...MEMO 3 42 ...
Page 83: ...3 89 3 90 2 MAIN P C BOARD TOP VIEW ...
Page 84: ...3 91 3 92 MAIN P C BOARD BOTTOM VIEW ...
Page 85: ...3 93 3 94 3 VFD P C BOARD ...
Page 86: ...3 95 3 96 4 MAIN VOLUME P C BOARD 5 MIC P C BOARD ...
Page 87: ...3 97 3 98 6 JOG P C BOARD 7 USB P C BOARD 8 TUNER P C BOARD ...
Page 89: ...3 101 3 102 MEMO MEMO ...