AR-FN1 (serv.man10). ARFN1 Service Manual-Description of Circuits - Sharp Copying Equipment Service Manual (repair manual). Page 3

The finisher main circuit transmits and receives data to and from the copier main PWB. According to instructions from the copier, it controls loads,
sensors and the input of switching information.
The finisher main circuit consists of a circuit which receives signals from sensors and switches, a circuit which drives solenoids and clutches, CPU,
ROM, expansion I/O and other peripheral circuits. 

The finisher block diagram is shown in Fig. 1. 

CPU(H8/3040)

IC2

RXD0

TXD0

/ RES

EXTAL

MD1

MD2

EXPG0
‚d‚w‚o‚f‚O

EXPG1

EXPG2

EXPG3

D0~7

CS0

RD

PB0~3

A0~16

EXPA0

EXPA1

EXPA2

EXPA3

P74

P75

P77

P40~43

PB4~7

P60

PA4

PA7

EXPE4

EXPE5

EXPE0

P44

P 45

EXPF1

EXPF2

EXPF3

EXPF4

EXPF5

EXPF6

EXPF7

EXPC4

EXPC5

EXPC6

EXPC7

P80

PA0

WR

EXPA4

EXPA5

EXPA6

EXPA7

EXPB0

EXPB1

EXPB2

EXPB4

EXPB5

EXPB6

EXPB7

BUFF

IC14

A0~16

RD

FMPWM

OE

CS

RM*

STUM*

ECPC0~3

PM*

PMPD

ROMCS

D0~7

-

F-TXD

F-DSR

F-DTR

F-RES

F-RXD

+5V

8MHz

"1"

GND1

GND2

PWD

DSW1

DSW2

INPD

RVPD

PFD1

PFD2

PFD3

PFD4

T3OD

STID

STPD

T1PF

LSTS

JGHP

P70

PSHP

STUHP

EVRE

OFHP

STHP

WR

T2PF

STND

PA6

FMDIR

IC10,16,20

EMA

EMB

STMA

STMB

EXPF0

OFMA

OFMB

IC17,18

T3UP

NCTS

P72

JM*

ROM(1M)

T3DN

P95

P94

XTAL

INGSL

T3UPSL

OG1SL

OG3SL

RRSL

T30RCL1

PDCL

STORCL

SPSL

T12CL

OG2SL

T3SLCL

4

IC4

IC7

IC11

IC1

MD0

+24V

P81

EXPE1

IC12,13

FMRE

4

4

4

M

IC5

DSW3

P71

PGOP

READY

CS2

EXPCS

WR

RD

D0~7

A0~2

CS

EXPCS

WR

RD

EXP(M66500F)

IC3

17

8

+24VIN

+24VIN

ZD1,7,Q5

+10V

IC6

 

: A,B,A/,B/

+10V

HU,HV,HW

X1

RES

F-RES

"0"

"0"

*

D0~7

A0~2

A0~16

D0~7

M

M

M

M

M

M

M

Copier

[Mode 1]

10V generating
circuit

Jogger motor HP sensor

Stapler self-priming sensor

Pusher motor HP sensor

Staple unit HP sensor

Tray 2 paper full sensor

Stapler needle
replacement sensor

Elevator motor encoder

Off-set HP sensor

Staple HP sensor

Transfer motor encoder

Paper entry sensor

Reversion paper discharge sensor

Upper transfer PG switching detection sensor

Transfer detection sensor 1

Transfer detection sensor 2

Transfer detection sensor 3

Transfer detection sensor 4

Staple tray paper entry sensor

Staple paper detection sensor

Tray 1 paper full sensor

Tray 3 upper limit sensor

Tray 3 lower limit sensor

Staple needle detection sensor

Staple cartridge sensor

Copier connection
switch

Upper door switch

Front door switch

2-phase brushless

motor driving circuit

Main driving motor
(FM)

[Brushless motor]

DC brush motor

driving circuit

Off-set motor
(OFM)

[Brush motor]

2-phase stepping

motor constant-current

driving circuit

Reversion motor
(RVM)

[Stepping motor]

2-phase stepping

motor constant current

driving circuit

Staple unit moving
motor (STUM)

[PM stepping motor]

2-phase stepping

motor constant current

driving circuit

Pusher motor
(PSM)

[HYB stepping motor]

DC brush motor

driving circuit(H driver)

Stapler

Staple motor
(STM)

[Brush motor]

DC brush motor

driving circuit(H driver)

Elevator motor
(EVM)

[Brush motor]

2-phase stepping

motor constant current

driving circuit  IC8

Jogger motor
(JGM)

[PM stepping motor]

Solenoid/

clutch

driving

circuit

Paper entry gate solenoid

Tray 3 upper limit solenoid

Paper discharge gate solenoid

Paper discharge gate 3 solenoid

Reversion roller pressure release SL

Tray 3 high speed clutch

ST paper discharge roller
pressure release clutch

Short path switching SL

Paper discharge gate 2 solenoid

Tray 3 low speed clutch

Tray 3 paper discharge sensor

ZD3,4,5,6

IC19

Level

conversion

circuit

IC9,Q1,2,3,4

Solenoid/

clutch

driving

circuit

Puddler clutch

P45

STGSL

Tray 1 / 2 speed change clutch

Paper holding solenoid

STGSL

9 – 1