Sharp AR-CF2 Service Manual page 19

2. Circuit Description
A. Outline
This circuit controls paper feed, transport, reverse, and delivery.
This circuit consists of the following divisions: managing signals from
the sensors, the switches, and the main unit; driving the motors, the
solenoid, and the clutch; the CPU and associated circuits.
B. Block Diagram
Main Unit
RXD0
SGND
TXD0
DC+24V
DC+24V
DC+5V
Inserter
COMMU-
NICATION
CIRCUIT
H_SEN
HI_SEN
HYK_SEN
KC_SEN
S_SEN
SENSORS
EMP_SEN
INPUT
CIRCUIT
REG_SEN
TIM_SEN
T_VR
T_SEN
TH_SEN
TS_SEN
P_ST_SW
SW
INPUT
P_MO_SW
CIRCUIT
P_PN_SW
P_PN_LED
LED
DRIVE
P_MO_LED1
CIRCUIT
P_MO_LED2
JAM COVER
P_MO_LED3
OPEN/CLOSED
DETECTION
P_MO_LED4
CIRCUIT
(24V
P_ST_LED1
CONDUCTIVE
DETECTION)
P_ST_LED2
JCK_SW
AR-CF2 ELECTRICAL SECTION 8 - 2
ROM
EEP ROM
CPU
DRIVER
INRUSH
CURRENT
LIMITING
CIRCUIT
DC+5V
Finisher
RXD1
SGN
TXD1
F_SOL
R_CL
K_MOT
H_MOT
Y_MOT
DC+24V