Sharp MX-FNX9 Service Manual ▷ View online
MX-FNX9 ELECTRICAL SECTION 10 – 10
b. Motor drive circuit
1)
1)
Punch horizontal resist motor (FPSM) drive circuit
This circuit controls the punch horizontal resist motor (FPSM) rotation/stop, the rotating direction, and the motor current, and is composed
of the CPU (IC10) on the finisher circuit, the DA converter (IC11), and the constant-current chopper type driver IC (IC2) in the above circuit.
The stepping motor drive excitement pattern signal (YI_MOT_PA, PB, EA, EB) outputted from the CPU (IC10-83, 84, 85, 86pin) is used to
control the motor rotating speed and the rotating direction.
The analog signal (YI_MOT_REF) outputted from the DA converter (IC11-6pin) is divided to a fixed voltage with R17 and R18. This divided
voltage is inputted to IC2-3, 4pin to set the motor current value. The logic of the standby signal (MOT_STY) outputted from the DA con-
verter (IC11-7pin) is H when the motor can be operated.
of the CPU (IC10) on the finisher circuit, the DA converter (IC11), and the constant-current chopper type driver IC (IC2) in the above circuit.
The stepping motor drive excitement pattern signal (YI_MOT_PA, PB, EA, EB) outputted from the CPU (IC10-83, 84, 85, 86pin) is used to
control the motor rotating speed and the rotating direction.
The analog signal (YI_MOT_REF) outputted from the DA converter (IC11-6pin) is divided to a fixed voltage with R17 and R18. This divided
voltage is inputted to IC2-3, 4pin to set the motor current value. The logic of the standby signal (MOT_STY) outputted from the DA con-
verter (IC11-7pin) is H when the motor can be operated.
2)
Punch motor (FPNM) drive circuit
This circuit controls the punch motor (FPNM) rotation/stop, and the rotating direction, and is composed of the CPU (IC10) on the finisher
circuit and the FET (Q1, 2, 3, 4). The CPU (IC10-98,99,100pin) outputs the punch motor (FPNM) drive forward rotation signal, the reverse
rotation signal, and the brake signal to control the DC motor.
circuit and the FET (Q1, 2, 3, 4). The CPU (IC10-98,99,100pin) outputs the punch motor (FPNM) drive forward rotation signal, the reverse
rotation signal, and the brake signal to control the DC motor.
Punch horizontal resist motor
(FPSM)
(FPSM)
Not installed
Punch motor (FPNM)
MX-FNX9 ELECTRICAL SECTION 10 – 11
c. Transmission type sensor circuit
1)
1)
LED circuit
This circuit is composed of the paper rear edge sensor
(FPPEND) on the inner punch circuit and the light emitting
(LED) circuit of the paper horizontal resist sensors (FPPD1 –
6) circuit.
Turning ON/OFF of LED1 – 7 are controlled by the paper rear
edge sensor (FPPEND) and the paper horizontal resist sen-
sors (FPPD1 – 6) circuit.
(FPPEND) on the inner punch circuit and the light emitting
(LED) circuit of the paper horizontal resist sensors (FPPD1 –
6) circuit.
Turning ON/OFF of LED1 – 7 are controlled by the paper rear
edge sensor (FPPEND) and the paper horizontal resist sen-
sors (FPPD1 – 6) circuit.
2)
Photo transistor (PTR) circuit
This circuit is the light receiving (PTR) circuit of the paper rear
edge sensor (FPPEND) and the paper horizontal resist sensor
(FPPD1 – 6) circuit on the inner punch circuit. When light is
received from the LED, the collector signal flows through PT1
– 7.
edge sensor (FPPEND) and the paper horizontal resist sensor
(FPPD1 – 6) circuit on the inner punch circuit. When light is
received from the LED, the collector signal flows through PT1
– 7.
MX-FNX9 ELECTRICAL SECTION 10 – 12
2. Block diagram
A. MX-FNX9
Main unit
Communi-
cation
circuit
cation
circuit
TCKS
TLLS
TPES
TULS
STHPS
RHDS1
RHDS2
EMPS
JHPS1
JHPS2
ENTS
RUDS
KKBS
JIS
F_SW
DC+24V
DC+5V
Rush current
prevention
circuit
prevention
circuit
Sensor
I/O circuit
I/O circuit
CPU
EE
PROM
Driver
circuit
circuit
Stapler
unit
unit
ST
MOT
J2
MOT
J1
MOT
TRY
MOT
T
MOT
RO
MOT
H
MOT
P_SOL
FAN
BR_SOL
S_SOL
F_SOL
SW
open/close
detection circuit
open/close
detection circuit
5V power
interruption
circuit
interruption
circuit
DC+5V
Inner finisher
Punch unit
PBA -CONT
TxD
RxD
DTR
DSR
RESET
RxD
DTR
DSR
RESET
DC+24
Drawer
connector
connector
DC+5V
DC+24
MX-FNX9 ELECTRICAL SECTION 10 – 13
B. MX-PNX1A/B/C/D
Punch unit
Inner finisher
PIS
REARS
YHPS
FULS
DC+24V
DC+5V
Sensor
I/O circuit
I/O circuit
Driver
circuit
circuit
Y
MOT
PUN
MOT
Drawer
connector
connector
PBA -LED
PBA -PTR
PBA-PUNCH
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