2-3-3 Scanner PWB
Image scanner
unit (ISU)
Exposure lamp (LED)
Home
position
LED drive
sensor
PWB
CCD PWB
Control PWB
Document
processor (DP)
DP
paper
feed
motor
ISU
motor
Motor
Motor
driver
driver
LAMP
Regulator
Power save
circuit
AFE
CSI
ASIC
Figure 2-3-5 Scanner PWB block diagram
DP
paper
DP switchback
feed
pressure
clutch
solenoid
Driver
Driver
CPU
2-3-11
2PK/2PL/2PM/2PN
DP timing
DP original
sensor
sensor
DP
DP switchback
open/
feedshift
close
solenoid
sensor
Driver
DP driver PWB
Scanner PWB
+24V0F
Power source
PWB