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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
MOTB
MOTNB
LAMP
lamp driver
LAMPHI
LAMPLOW
(Q1, 2, 3, 4, 5)
HPSWN
Main
board
Figure 2-3-13 Scanner board circuit block diagram
ISUMOTA
ISUMOTNA
Driver
ISUMOTB
circuit
(U1)
ISUMOTNB
CCD board
Exposure
circuit
Scanner
motor
Exposure
lamp
Inverter
board
Scanner
home
position
switch
Operation
board
Optional
DP
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