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SCR-140(A4)-en 99.3.15 9:48 PM ˘ ` 1
No SLED operation
Move pick-up out.
Insert 2 FPC and power cord.
Pick-up moves in?
The below waveform is outputted in
IC301 22Pin, 23pin ?
The below signal is inputted
in CN503 A,A, B,B termial?
The opposition signal is inputted
in CN503 A, A, B, B termial?
Replace SLED Motor.
N
Y
Y
Y
Y
SLED runs normally.
N
Refer to 'Check power source and initial state'
N
Voltage of IC501 4pin ,5pin
in 5V?
N
17
1
Y
Check R506, R507,
NR504 R512 soldering.
After checking IC501
N
soldering, no error,
replace IC
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