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2DC
2-3-8 Scanner board
The scanner board consists of scanner driver circuit Q1 to Q5 and exposure lamp driver circuit U1, relays signals from
engine board, main board, operation board, CCD board and optional document processor.
Engine
board
2-3-14
Scanner board
MOTA
MOTNA
Driver
MOTB
circuit
(U1)
MOTNB
LAMP
Exposure
lamp driver
LAMPHI
circuit
LAMPLOW
(Q1, 2, 3, 4, 5)
HPSWN
Main
board
Figure 2-3-13 Scanner board circuit block diagram
ISUMOTA
ISUMOTNA
Scanner
ISUMOTB
motor
ISUMOTNB
CCD board
Exposure
lamp
Inverter
board
Scanner
home
position
switch
Operation
board
Optional
DP
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