+5V
+5V
IC10
X1
(8.00MHz)
IC08,IC09
8-CHANNEL
MULTI
PLEXER
IC11
C P U
+24V
+10V
P17
P63
P62
P64
P36
P34,P35
P32,P33
P30,P31
P10~P17
RES,RXD,P46,P47
TXD,P52
X1,X2
P70,P72
Transport clutch
(DTRC)
Transport
motor (DM)
Motor drive section
IC07
driver
IC04
driver
IC12
operation
amplifier
Copier main
PWB
Tray size detection
(DCSS)
Middle stage, lower
stage tray paper
remaining quantity
sensor (DCSPD2, 3)
IC02
driver
Communication
section
Input
section
(1)
24V monitor
(24vm)
IC06
driver
Output
section
(2)
IC01
driver
Output
section
(1)
Input
section
(2)
Lift up motor
(DLUM1)
Lift up motor
(DLUM2)
Lift up motor
(DLUM3)
3. Main PWB blook diagram
Paper empty sensor
(DPED)
Upper limit sensor
(DLUD)
Top cassette
remaining paper
quantity detection
(DCSPD)
Paper exit sensor
(DPCD)
Door open/close
sensor (DDCPSW)
Paper feed clutch
(DPFC)
paper feed
solenoid (DPFS)
Transport clutch
(DTRC)
IC05
driver
IC03
driver
Output
section (1)
P40~P42,
P21~P27
9 – 3