Read Sharp AR-FN5 (serv.man3) Service Manual online
[9] CIRCUIT DESCRIPTIONS
1. General
The finisher main circuit sends/receives commands to/from the copier’s MCU PWB, and controls loads according to the commands and controls
input/output of sensor/switch information.
input/output of sensor/switch information.
The finisher is composed of this circuit, the circuit which makes inputs from sensors and switches, the circuit which drives motors/solenoids/clutches,
ROM, RAM, and the peripheral circuits.
ROM, RAM, and the peripheral circuits.
2. Block diagram
The finisher block diagram is shown below.
CPU
SL
SL
PS
+5V
RxD
TxD
RAM
2K
SL
SL
SL
CL
9.8304MHz
/CE
/OE
/WE
RY/BY
SL
COPIER
/FINCRDY
/FINDET
/RES
FINCMD
FINSTS
/FINSRDY
FINISHER BLOCK DIAGRAM
2TRAY FINISHER
H8S/2350
/RES
/SRDY
/CRDY
A0~A16
D0~D15
SRAM
(256K bit)
FLASH ROM
M29F200BA
P-GND
S-GND
+3.3V
+24V
BUFFER
LS244
STAPLE SWITCH
CARTRIDGE SWITCH
P-IN SENSOR
PAPER WIDE SENSOR
TRAY1 P-OUT SENSOR
GP1S44S1
GP1S44S1
GP1S44S1
GP1S44S1
TRAY2 P-OUT SENSOR
STAPLE HP SENSOR
GP1A71A
SELF PRIMING SENSOR
LIFT UP ENCODE
SIDE HP SENSOR
BACK HP SENSOR
TRAY2 UP SENSOR
TRAY2 DOWN SENSOR
ADJUST TRAY PAPER
SENSOR
GP1A71A
GP1A71A
GP1A71A
GP1A71A
GP1A71A
GP1A71A
BUFFER
LS244
GP1A71A
GP1A71A
GP1A71A
GP1A71A
PAPER POSITION SENSOR
(T2PD)
TRAY1 P-FULL SENSOR
OFFSET HP SENSOR
+5V
SW24
DRIVER
TD62318
+24V
TRAY COVER SWITCH
PG COVER SWITCH
STAPLER COVER
SWITCH
PAPER HOLD
SOLENOID
P-OUT CLUTCH
BACK BOARD
SOLENOID
GATE-R SOLENOID
DRIVER
TD62318
DRIVER
TA7291P
SHUTTER SOLENOID
ADJUST SOLENOID
GATE-L SOLENOID
OFFSET MOTOR
DC
MOTOR
DRIVER
TA7291P
DRIVER
LIFT UP MOTOR
STAPLER MOTOR
DC
MOTOR
DC
MOTOR
PULSE
MOTOR
BACK BOARD
MOTOR
SIDE CONTROL
MOTOR
PULSE
MOTOR
DRIVER
MTD1361
DRIVER
MTD1361
MAIN MOTOR
DRIVER
MTD1361
PULSE
MOTOR
Reserved
Level
switch
circuit
switch
circuit
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