Sharp MX-5500N / MX-6200N / MX-7000N (serv.man24) Peripheral ▷ View online
MX-CFX1 ELECTRICAL SECTION 11 – 2
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Sleeve
FASTON Terminal
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Paper feed motor
Reverse motor
Flapper solenoid
Resistration clutch
JAM cover open/close switch
Main Unit I/F
Finisher I/F
Horizontal
transport
motor
RD
BK
YW
BE
WE
OE
OE
BE
YW
RD
BK
WE
RD
BK
YW
BE
WE
OE
OE
WE
BE
RD
BK
YW
OE
WE
BE
RD
BK
YW
BN
SB
PK
VT
YW
RD
BK
WE
GY
BK
OE
BE
BN
RD
BK
YW
PK
BE
VT
BK
OE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BK
BK
BE
YW
RD
BE
WE
BK
RD
YW
BE
OE
BE
BE
BE
BE
RD
GY
BN
SB
PK
VT
YW
BK
WE
RD
BN
YW
BK
PK
VT
RD
YW
BE
090 PBA-CONT
PF3090K219
ASM-SOL/CL
PF3092K217
ASM-I/F-92
PF3090K218
ASM-SW
MX-CFX1 ELECTRICAL SECTION 11 – 3
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 cir-
cuits.
from the sensors, the switches, and the main unit; driving the
motors, the solenoid, and the clutch; the CPU and associated cir-
cuits.
Inserter
Main Unit
RXD0
ɛ
SGND
ɛ
TXD0
ɛ
DC+24V
DC+24V
ɛ
ġ ɛ
DC+5V ɛ
Finisher
ɛ
RXD1
ɛ
SGN
ɛ
TXD1
ɛ
DC+24V
HYK_SEN
EMP_SEN
T_VR
S_SEN
TIM_SEN
REG_SEN
T_SEN
SENSORS
INPUT
CIRCUIT
COMMU-
NICATION
CIRCUIT
CPU
DRIVER
F_SOL
R_CL
K_MOT
H_MOT
Y_MOT
ROM
EEP ROM
INRUSH
CURRENT
LIMITING
CIRCUIT
DC+5V
P_ST_SW
P_MO_SW
P_PN_SW
P_PN_LED
P_MO_LED4
P_MO_LED3
P_MO_LED2
P_MO_LED1
P_ST_LED2
P_ST_LED1
SW
INPUT
CIRCUIT
LED
DRIVE
CIRCUIT
JAM COVER
OPEN/CLOSED
DETECTION
CIRCUIT
(24V
CONDUCTIVE
DETECTION)
HI_SEN
H_SEN
JCK_SW
MX-CFX1 ELECTRICAL SECTION 11 – 4
B. Circuit Detail
(1) Communication Circuit
1) TxD signal
2)
RxD signal
This circuit communicates with the main unit and the finisher.
TxD0 and TxD1 are data signals transmitted from the main unit and the finisher to the inserter. RxD0 and RxD1 are data signals transmitted
from the inserter to the main unit and the finisher. Logical 1 is represented by +5V, and logical 0 is represented by 0V.
TxD0 and TxD1 are data signals transmitted from the main unit and the finisher to the inserter. RxD0 and RxD1 are data signals transmitted
from the inserter to the main unit and the finisher. Logical 1 is represented by +5V, and logical 0 is represented by 0V.
(2) Sensor Input Circuits
1) Reverse Sensor (H_SEN)
H_SEN uses the reflective sensor integrated with an LED and a
phototransistor.
The sensor detects a sheet between the sensor and the opposite
reflector interrupting the light path.
The CPU (IC6-Pin94, 95, 96) output is transmitted to the sensor to
light the LED through the D/A converter (IC13), the operational
amplifier (IC15.2), and the transistor (Q1). Meanwhile the signal is
transmitted to the CPU (IC6-Pin30) through the noise filters (R4,
C2) and the comparator (IC1.1).
phototransistor.
The sensor detects a sheet between the sensor and the opposite
reflector interrupting the light path.
The CPU (IC6-Pin94, 95, 96) output is transmitted to the sensor to
light the LED through the D/A converter (IC13), the operational
amplifier (IC15.2), and the transistor (Q1). Meanwhile the signal is
transmitted to the CPU (IC6-Pin30) through the noise filters (R4,
C2) and the comparator (IC1.1).
The signal input to the CPU follows the logic: "H" when a sheet is
detected, "L" when not detected.
The analog signal is transmitted to CPU (IC-Pin105) through no
comparator.
R1 and R10 divide the +5V voltage which is applied to the compar-
ator as the reference voltage.
R13 is used to make the reference voltage have hysteresis.
detected, "L" when not detected.
The analog signal is transmitted to CPU (IC-Pin105) through no
comparator.
R1 and R10 divide the +5V voltage which is applied to the compar-
ator as the reference voltage.
R13 is used to make the reference voltage have hysteresis.
2) Paper Exit Sensor (HI_SEN)
HI_SEN uses the photointerrupter integrated with an LED and a
phototransistor.
The sensor detects a sheet with the lever actuator interrupting the
light path of the photointerrupter.
HI_SEN uses the photointerrupter integrated with an LED and a
phototransistor.
The sensor detects a sheet with the lever actuator interrupting the
light path of the photointerrupter.
The signal is transmitted to the CPU (IC6-Pin106) through the
noise filters (R25,C9).
The signal input to the CPU follow the logic: "L" when a sheet is
detected, "H" when not detected.
noise filters (R25,C9).
The signal input to the CPU follow the logic: "L" when a sheet is
detected, "H" when not detected.
Main Unit
F inis her
Main Unit
F inis her
R evers e S ens or
Paper Exit Sensor
Reverse Unit Open/Closed Sensor
Chassis Cover Open/Closed Sensor
Unused
MX-CFX1 ELECTRICAL SECTION 11 – 5
R39 is a current limiting resistor for the LED. R34 is a load resistor
for the sensor.
3) Reverse Unit Open/Closed Sensor (HYK_SEN)
HYK_SEN uses the photointerrupter integrated with an LED and a
phototransistor.
The sensor detects state of the reverse unit with the lever actuator
interrupting the light path of the photointerrupter.
for the sensor.
3) Reverse Unit Open/Closed Sensor (HYK_SEN)
HYK_SEN uses the photointerrupter integrated with an LED and a
phototransistor.
The sensor detects state of the reverse unit with the lever actuator
interrupting the light path of the photointerrupter.
The signal is transmitted to the CPU (IC6-Pin108) through the
noise filters (R21,C7).
The signal input to the CPU follows the logic: "L" when the reverse
unit is open, "H" when closed.
R37 is a current limiting resistor for the LED. R32 is a load resistor
for the sensor.
noise filters (R21,C7).
The signal input to the CPU follows the logic: "L" when the reverse
unit is open, "H" when closed.
R37 is a current limiting resistor for the LED. R32 is a load resistor
for the sensor.
4) Set Sensor (S_SEN)
S_SEN uses the photointerrupter integrated with an LED and a
phototransistor.
The sensor detects the main unit with the lever actuator interrupting
the light path.
The signal is transmitted to the CPU (IC6-Pin2) through the noise
filters (R56,C16).
The signal input to the CPU follows the logic: "H" when the inserter
is connected to the main unit, "L" when not connected.
R59 is a current limiting resistor for the LED. R58 is a load resistor
for the sensor.
5) Empty Sensor (EMP_SEN)
EMP_SEN uses the photointerrupter including the LED and the
phototransistor in one unit.
The sensor detects a sheet with the lever actuator interrupting the
light path.
The signal is transmitted to the CPU (IC6-Pin31) through the noise
filters (R7,C4).
The signal input to the CPU is the following logic: the signal is "H"
when a sheet is detected, "L" when not detected.
R12 is the current limiting resistor for the LED. R11 is the load
resistor for the sensor.
S_SEN uses the photointerrupter integrated with an LED and a
phototransistor.
The sensor detects the main unit with the lever actuator interrupting
the light path.
The signal is transmitted to the CPU (IC6-Pin2) through the noise
filters (R56,C16).
The signal input to the CPU follows the logic: "H" when the inserter
is connected to the main unit, "L" when not connected.
R59 is a current limiting resistor for the LED. R58 is a load resistor
for the sensor.
5) Empty Sensor (EMP_SEN)
EMP_SEN uses the photointerrupter including the LED and the
phototransistor in one unit.
The sensor detects a sheet with the lever actuator interrupting the
light path.
The signal is transmitted to the CPU (IC6-Pin31) through the noise
filters (R7,C4).
The signal input to the CPU is the following logic: the signal is "H"
when a sheet is detected, "L" when not detected.
R12 is the current limiting resistor for the LED. R11 is the load
resistor for the sensor.
6)
Registration Sensor (REG_SEN)
REG_SEN uses the photointerrupter integrated with an LED and a
phototransistor.
The sensor detects a sheet with the lever actuator interrupting the
light path.
The signal is transmitted to the CPU (IC6-Pin32) through the noise
filters (R14,C5).
The signal input to the CPU follows the logic: "L" when a sheet is
detected, "H" when not detected.
R17 is a current limiting resistor for the LED. R16 is a load resistor
for the sensor.
7)
phototransistor.
The sensor detects a sheet with the lever actuator interrupting the
light path.
The signal is transmitted to the CPU (IC6-Pin32) through the noise
filters (R14,C5).
The signal input to the CPU follows the logic: "L" when a sheet is
detected, "H" when not detected.
R17 is a current limiting resistor for the LED. R16 is a load resistor
for the sensor.
7)
Timing Sensor (TIM_SEN)
TIM_SEN uses the photointerrupter integrated with an LED and a
phototransistor.
The sensor detects a sheet with the lever actuator interrupting the
light path.
The signal is transmitted to the CPU (IC6-Pin33) through the noise
filters (R19,C6).
The signal input to the CPU follows the logic: "L" when a sheet is
detected, "H" when not detected.
R18 is a current limiting resistor for the LED. R31 is a load resistor
for the sensor.
phototransistor.
The sensor detects a sheet with the lever actuator interrupting the
light path.
The signal is transmitted to the CPU (IC6-Pin33) through the noise
filters (R19,C6).
The signal input to the CPU follows the logic: "L" when a sheet is
detected, "H" when not detected.
R18 is a current limiting resistor for the LED. R31 is a load resistor
for the sensor.
8) Paper Width Detection Potentiometer (T_VR)
T_VR is a potentiometer.
The paper width is detected using the output voltage, which may
vary depending on the potentiometer's knob position.
T_VR is a potentiometer.
The paper width is detected using the output voltage, which may
vary depending on the potentiometer's knob position.
The signal is transmitted to the CPU (IC6-Pin112) through the
noise filters (R48,C12).
noise filters (R48,C12).
S et S ens or
E mpty S ens or
R egis tration S ens or
T iming S ens or
Paper Width Detection Potentiometer
Tray Sensor
Sub Tray Drawn Detection Sensor
Sub Tray Folded Detection Sensor
Unused
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