Sharp MX-PNX1D (serv.man2) Service Manual ▷ View online
MX-FNX1/MX-PNX1 SELF DIAGNOSTICS AND TROUBLE CODES 9 – 2
Phenomenon
A document is discharged to the reverse path in the
operation other than reverse operation.
operation other than reverse operation.
Case 1
Cause
Flapper solenoid (FINRPS) connector pin
trouble
trouble
Check &
Remedy
Remedy
Check the connection state of the connector.
(CN15)
(CN15)
Case 2
Cause
Solenoid coil disconnection
Check &
Remedy
Remedy
Perform the conduction test of the coil. If there
is no conduction, replace the coil.
is no conduction, replace the coil.
Case 3
Cause
Control PWB trouble
Check &
Remedy
Remedy
If the flapper solenoid (FINRPS) does not
operate in the solenoid single operation mode,
replace the control PWB.
operate in the solenoid single operation mode,
replace the control PWB.
Phenomenon
The belt separation solenoid (FBRS) does not operate.
The paper surface detection solenoid (FSLS) does not
operate
The paddle one-rotation solenoid (FPDS) does not
operate.
The paper surface detection solenoid (FSLS) does not
operate
The paddle one-rotation solenoid (FPDS) does not
operate.
Case 1
Cause
Solenoid connector pin trouble
Check &
Remedy
Remedy
Check the connection state of the connector.
(CN15, 20)
(CN15, 20)
Case 2
Cause
Solenoid coil disconnection
Check &
Remedy
Remedy
Perform the conduction test of the coil. If there
is no conduction, replace the coil.
is no conduction, replace the coil.
Case 3
Cause
Control PWB trouble
Check &
Remedy
Remedy
If the solenoid does not operate in the single
operation mode of the belt separation solenoid
(FBRS), the paper surface detection solenoid
(FSLS), or the paddle one-rotation solenoid
(FPDS), replace the control PWB.
operation mode of the belt separation solenoid
(FBRS), the paper surface detection solenoid
(FSLS), or the paddle one-rotation solenoid
(FPDS), replace the control PWB.
Phenomenon
The take-up belt does not operate normally.
Case 1
Cause
Take-up belt sensor (FBRD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP13 on the control
PWB to confirm that it is 5V
PWB to confirm that it is 5V
±5% when the belt
descends, and is 1V or less when the belt
separates. If the voltage does not satisfy the
above condition, replace the sensor.
separates. If the voltage does not satisfy the
above condition, replace the sensor.
Case 2
Cause
Control PWB trouble
Check &
Remedy
Remedy
If the phenomenon is not removed though the
sensor level is changed by turning ON/OFF
each sensor, replace the control PWB.
sensor level is changed by turning ON/OFF
each sensor, replace the control PWB.
Phenomenon
The staple shift motor does not operate.
Trouble code: F1-08
Trouble code: F1-08
Case 1
Cause
Stapler HP sensor (FSTHPD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP7 on the control
PWB to confirm that it is 5V
PWB to confirm that it is 5V
±5% when the
stapler unit is pushing against the front side
(home position), and is 1V or less when the
stapler unit is pushing against the rear side. If
the voltage does not satisfy the above
condition, replace the sensor.
(home position), and is 1V or less when the
stapler unit is pushing against the rear side. If
the voltage does not satisfy the above
condition, replace the sensor.
Case 2
Cause
Motor coil disconnection
Check &
Remedy
Remedy
Perform the conduction test of the coil. If there
is no conduction, replace the coil.
is no conduction, replace the coil.
Case 3
Cause
Control PWB trouble
Check &
Remedy
Remedy
After checking the above 1 to 2, if the
phenomenon is not removed though the
sensor level is changed and if the motor does
not operate in the motor single operation
mode, replace the control PWB.
phenomenon is not removed though the
sensor level is changed and if the motor does
not operate in the motor single operation
mode, replace the control PWB.
Phenomenon
The stapler does not operate. Trouble code: F1-10
Case 1
Cause
Alignment plate position sensor (FJPD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP50 on the control
PWB to confirm that it is 1V or less when the
stapler is at the paper rear edge stopper
section, and is 5V
PWB to confirm that it is 1V or less when the
stapler is at the paper rear edge stopper
section, and is 5V
±5% when the stapler is not
at that position. If the voltage does not satisfy
the above condition, replace the sensor.
the above condition, replace the sensor.
Case 2
Cause
Stapler home sensor (FSHPD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP51 on the control
PWB to confirm that it is 5V
PWB to confirm that it is 5V
±5% at the stapling
mechanism home position, and is 1V or less
when stapling. If the voltage does not satisfy
the above condition, replace the stapler.
when stapling. If the voltage does not satisfy
the above condition, replace the stapler.
Case 3
Cause
Self priming sensor (FSTD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP52 on the control
PWB to confirm that it is 5V
PWB to confirm that it is 5V
±5% when a
cartridge is provided (READY state), and is 1V
or less when a cartridge is not provided. If the
voltage does not satisfy the above condition,
replace the stapler.
or less when a cartridge is not provided. If the
voltage does not satisfy the above condition,
replace the stapler.
Case 4
Cause
Staple empty sensor (FSD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP53 on the control
PWB to confirm that it is 5V
PWB to confirm that it is 5V
±5% when a
cartridge is provided (with staples), and is 1V
or less when a cartridge is not provided. If the
voltage does not satisfy the above condition,
replace the stapler.
or less when a cartridge is not provided. If the
voltage does not satisfy the above condition,
replace the stapler.
Case 5
Cause
Motor coil disconnection
Check &
Remedy
Remedy
Perform the conduction test of the coil. If there
is no conduction, replace the stapler.
is no conduction, replace the stapler.
Case 6
Cause
Control PWB trouble
Check &
Remedy
Remedy
After checking the above 1 to 5, if the
phenomenon is not removed though the
sensor level is changed and if the motor does
not operate in the motor single operation
mode, replace the control PWB.
phenomenon is not removed though the
sensor level is changed and if the motor does
not operate in the motor single operation
mode, replace the control PWB.
Phenomenon
The tray does not operate. Trouble code: F1-15
Case 1
Cause
The paper surface sensor 1 (FSLD1), paper
surface sensor 2 (FSLD2) trouble
surface sensor 2 (FSLD2) trouble
Check &
Remedy
Remedy
Measure the voltage of TP5 and 6 on the
control PWB to confirm that it is changed in the
range of 1V or less to 5V
control PWB to confirm that it is changed in the
range of 1V or less to 5V
±5% when the paper
holding lever is moved. If the voltage does not
satisfy the above condition, replace the sensor.
satisfy the above condition, replace the sensor.
Case 2
Cause
Tray upper limit sensor (FULD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP1 on the control
PWB to confirm that it is 1V or less when the
tray is at the upper limit position, and is 5V
PWB to confirm that it is 1V or less when the
tray is at the upper limit position, and is 5V
±5%
when the tray is not at the upper limit position.
If the voltage does not satisfy the above
condition, replace the sensor.
If the voltage does not satisfy the above
condition, replace the sensor.
Case 3
Cause
Tray intermediate lower limit sensor (FMLLD)
trouble
trouble
Check &
Remedy
Remedy
Measure the voltage of TP2 on the control
PWB to confirm that it is 1V or less when the
tray is at the intermediate position, and is
5V
PWB to confirm that it is 1V or less when the
tray is at the intermediate position, and is
5V
±5% when the tray is not at the intermediate
position. If the voltage does not satisfy the
above condition, replace the sensor.
above condition, replace the sensor.
Case 4
Cause
Tray lower limit sensor (FLLD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP3 on the control
PWB to confirm that it is 1V or less when the
tray is at the lower limit position, and is 5V
PWB to confirm that it is 1V or less when the
tray is at the lower limit position, and is 5V
±5%
when the tray is not at the lower limit position.
If the voltage does not satisfy the above
condition, replace the sensor.
If the voltage does not satisfy the above
condition, replace the sensor.
Case 5
Cause
Motor coil disconnection
Check &
Remedy
Remedy
Perform the conduction test of the coil. If there
is no conduction, replace the stapler.
is no conduction, replace the stapler.
MX-FNX1/MX-PNX1 SELF DIAGNOSTICS AND TROUBLE CODES 9 – 3
B. MX-PNX1A/B/C/D
Case 6
Cause
Control PWB trouble
Check &
Remedy
Remedy
After checking the above 1 to 5, if the
phenomenon is not removed though the
sensor level is changed and if the motor does
not operate in the motor single operation
mode, replace the control PWB.
phenomenon is not removed though the
sensor level is changed and if the motor does
not operate in the motor single operation
mode, replace the control PWB.
Phenomenon
The fan (FFAN) does not operate. Trouble code: F1-
21
21
Case 1
Cause
Pinching of a foreign material
Check &
Remedy
Remedy
Visually check to remove a foreign material from the
inlet port.
inlet port.
Case 2
Cause
Motor coil disconnection
Check &
Remedy
Remedy
Perform the conduction test of the coil. If there is no
conduction, replace the motor.
conduction, replace the motor.
Case 3
Cause
Lock detection trouble
Check &
Remedy
Remedy
Measure the voltage of TP88 on the control PWB to
confirm that it is 1V or less when lock is released,
and is 5V
confirm that it is 1V or less when lock is released,
and is 5V
±5% when lock is set. If the voltage does
not satisfy the above condition, replace it.
Case 4
Cause
Control PWB trouble
Check &
Remedy
Remedy
After checking the above 1 to 3, if the fan (FFAN)
does not operate in the motor single operation mode,
replace the control PWB.
does not operate in the motor single operation mode,
replace the control PWB.
Phenomenon
Though the main switch of the main unit is turned
ON, the inner punch does not operate at all.
ON, the inner punch does not operate at all.
Case 1
Cause
Connection failure with the inner finisher
Check &
Remedy
Remedy
Check to confirm that each connector is connected
properly.
properly.
Case 2
Cause
Connection failure of the drawer connector with the
inner finisher
inner finisher
Check &
Remedy
Remedy
Check the conduction state of the connector pins as
well as the inner finisher. If there is no conduction,
replace the drawer connector.
well as the inner finisher. If there is no conduction,
replace the drawer connector.
Case 3
Cause
Control PWB trouble
Check &
Remedy
Remedy
After checking the above 1 and 2, if DC24V and
DC5V are not supplied from the main unit or if 24V is
not output to TP19 and 5V is not output to TP22 on
the control PWB, replace the control PWB.
DC5V are not supplied from the main unit or if 24V is
not output to TP19 and 5V is not output to TP22 on
the control PWB, replace the control PWB.
Pheno
menon
menon
The punch motor (FPNM) does not operate.
Trouble code: F1-34
Trouble code: F1-34
Case 1
Cause
Punch position sensor (FPHPD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP47 on the inner finisher
control PWB to confirm that it is 5V
control PWB to confirm that it is 5V
±5% at the home
position, and is 1V or less when punching. If the
voltage does not satisfy the above condition, replace
the sensor.
voltage does not satisfy the above condition, replace
the sensor.
Case 2
Cause
Rear position sensor (FPRPD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP48 on the inner finisher
control PWB to confirm that it is 5V
control PWB to confirm that it is 5V
±5% at the lower
limit position, and is 1V or less at the upper limit
position. If the voltage does not satisfy the above
condition, replace the sensor.
position. If the voltage does not satisfy the above
condition, replace the sensor.
Case 3
Cause
Motor coil disconnection
Check &
Remedy
Remedy
Perform the conduction test of the coil. If there is no
conduction, replace the coil.
conduction, replace the coil.
Case 4
Cause
Control PWB trouble
Check &
Remedy
Remedy
After checking the above 1 to 3, if the phenomenon
is not removed though the sensor level is changed
and if the motor does not operate in the motor single
operation mode, replace the control PWB.
is not removed though the sensor level is changed
and if the motor does not operate in the motor single
operation mode, replace the control PWB.
Phenomenon
Punch horizontal resist motor (FPSM) does not
operate. Trouble code: F1-33
operate. Trouble code: F1-33
Case 1
Cause
Horizontal shift HP sensor (FPSHPD) trouble
Check &
Remedy
Remedy
Measure the voltage of TP49 on the inner finisher
control PWB to confirm that it is 5V
control PWB to confirm that it is 5V
±5% at the home
position, and is 1V or less at the upper limit position.
If the voltage does not satisfy the above condition,
replace the sensor.
If the voltage does not satisfy the above condition,
replace the sensor.
Case 2
Cause
Motor coil disconnection
Check &
Remedy
Remedy
Perform the conduction test of the coil. If there is no
conduction, replace the coil.
conduction, replace the coil.
Case 3
Cause
Control PWB trouble
Check &
Remedy
Remedy
After checking the above 1 and 2, if the
phenomenon is not removed though the sensor level
is changed and if the motor does not operate in the
motor single operation mode, replace the control
PWB.
phenomenon is not removed though the sensor level
is changed and if the motor does not operate in the
motor single operation mode, replace the control
PWB.
Phenomenon
The punch dust container full is not detected.
Case 1
Cause
Full sensor (FPDD) trouble
Check &
Remedy
Remedy
If there is no punch dust in the punch dust container,
measure the voltage of TP2 on the control PWB to
confirm that it is 5V
measure the voltage of TP2 on the control PWB to
confirm that it is 5V
±5% when the punch dust
container is removed, and is 1V or less when the
lever in the punch dust container is put straight and
stored (the sensor is shaded from the light). It the
voltage does not satisfy the above condition, replace
the sensor.
lever in the punch dust container is put straight and
stored (the sensor is shaded from the light). It the
voltage does not satisfy the above condition, replace
the sensor.
Case 2
Cause
Control PWB trouble
Check &
Remedy
Remedy
If the phenomenon is not removed though the
sensor level is changed by turning ON/OFF the
sensor, replace the control PWB.
sensor level is changed by turning ON/OFF the
sensor, replace the control PWB.
Phenomenon
A paper jam error is displayed on the system display.
Case 1
Cause
Paper jam
Check &
Remedy
Remedy
Visually check and remove the paper jam.
Case 2
Cause
Paper rear edge sensor (FPPEND) trouble
Check &
Remedy
Remedy
Measure the voltage of TP54 on the inner finisher
control PWB to confirm that it is 1.05V or less when
paper is supplied, and is 2.88V or more when paper
is empty. If the voltage does not satisfy the above
condition, replace the sensor PWB (LED, PTR).
control PWB to confirm that it is 1.05V or less when
paper is supplied, and is 2.88V or more when paper
is empty. If the voltage does not satisfy the above
condition, replace the sensor PWB (LED, PTR).
Case 3
Cause
Paper horizontal resist sensor (FPPD1 to 6) trouble
Check &
Remedy
Remedy
Measure the voltage of TP55 on the inner finisher
control PWB to confirm that it is 1.05V or less when
paper is supplied, and is 2.88V or more when paper
is empty. If the voltage does not satisfy the above
condition, replace the sensor PWB (LED, PTR).
control PWB to confirm that it is 1.05V or less when
paper is supplied, and is 2.88V or more when paper
is empty. If the voltage does not satisfy the above
condition, replace the sensor PWB (LED, PTR).
Case 4
Cause
Control PWB trouble
Check &
Remedy
Remedy
If the phenomenon is not removed though the
sensor level is changed by turning ON/OFF the
sensor, replace the control PWB.
sensor level is changed by turning ON/OFF the
sensor, replace the control PWB.
MX-FNX1/MX-PNX1 ELECTRICAL SECTION 10 – 1
âºíuÇ´
Service Manual
[10] ELECTRICAL SECTION
1. Circuit descriptions
A. MX-FNX1
(1) General
This circuit controls transport, alignment (bundle alignment), staple,
and exit of paper discharged from the main unit.
This circuit is composed of sensors, switches, the circuit which pro-
cesses signals from the main unit, the circuit which drives motors
and solenoids, the CPU, and its peripheral circuits.
and exit of paper discharged from the main unit.
This circuit is composed of sensors, switches, the circuit which pro-
cesses signals from the main unit, the circuit which drives motors
and solenoids, the CPU, and its peripheral circuits.
(2) Circuit descriptions
a. Communication circuit
This circuit is the communication circuit with the main unit.
TxD and DTR are data to be sent from the main unit to the inner fin-
isher. RxD and DSR are data to be sent from the inner finisher to
the main unit. The reset signal from the main unit is inputted to
RESET.
TxD and DTR are data to be sent from the main unit to the inner fin-
isher. RxD and DSR are data to be sent from the inner finisher to
the main unit. The reset signal from the main unit is inputted to
RESET.
b. Sensor input circuit
1)
Tray upper limit sensor (FULD)
The tray upper limit sensor (FULD) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The upper limit is detected by interruption of lights with the
light-shielding plate.
Signals are inputted to the multiplexer (IC14-13pin) through
the noise filter of R11 and C1.
The logic of the signal inputted to the CPU is L for the tray
upper limit position.
R1 is the current-limiting resistor of the light emitting diode. R6
is the load resistor of the sensor.
The tray upper limit sensor (FULD) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The upper limit is detected by interruption of lights with the
light-shielding plate.
Signals are inputted to the multiplexer (IC14-13pin) through
the noise filter of R11 and C1.
The logic of the signal inputted to the CPU is L for the tray
upper limit position.
R1 is the current-limiting resistor of the light emitting diode. R6
is the load resistor of the sensor.
2)
Tray intermediate lower limit sensor (FMLLD)
The tray intermediate lower limit sensor (FMLLD) employs the
photo interrupter in which the light emitting diode and the
photo transistor are integrated.
The lower limit is detected by interruption of lights with the
light-shielding plate.
Signals are inputted to the multiplexer (IC14-14pin) through
the noise filter of R12 and C2.
The logic of the signal inputted to the CPU is L for the tray
intermediate position.
R2 is the current-limiting resistor of the light emitting diode. R7
is the load resistor of the sensor.
The tray intermediate lower limit sensor (FMLLD) employs the
photo interrupter in which the light emitting diode and the
photo transistor are integrated.
The lower limit is detected by interruption of lights with the
light-shielding plate.
Signals are inputted to the multiplexer (IC14-14pin) through
the noise filter of R12 and C2.
The logic of the signal inputted to the CPU is L for the tray
intermediate position.
R2 is the current-limiting resistor of the light emitting diode. R7
is the load resistor of the sensor.
3)
Tray lower limit sensor (FLLD)
The tray lower limit sensor (FLLD) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The lower limit is detected by interruption of lights with the
light-shielding plate.
Signals are inputted to the multiplexer (IC14-15pin) through
the noise filter of R13 and C3.
The logic of the signal inputted to the CPU is L for the tray
lower limit position.
R3 is the current-limiting resistor of the light emitting diode. R8
is the load resistor of the sensor.
The tray lower limit sensor (FLLD) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The lower limit is detected by interruption of lights with the
light-shielding plate.
Signals are inputted to the multiplexer (IC14-15pin) through
the noise filter of R13 and C3.
The logic of the signal inputted to the CPU is L for the tray
lower limit position.
R3 is the current-limiting resistor of the light emitting diode. R8
is the load resistor of the sensor.
4)
Tray paper empty sensor (FBED)
The tray empty sensor (FBED) employs the photo interrupter
in which the light emitting diode and the photo transistor are
integrated.
Paper empty is detected by interruption of lights with the lever-
type actuator.
Signals are inputted to the CPU (IC10-74pin) through the noise
filter of R14 and C4.
The logic of the signal inputted to the CPU is L when paper is
loaded to the tray, and H for paper empty.
R4 is the current-limiting resistor of the light emitting diode. R9
is the load resistor of the sensor.
The tray empty sensor (FBED) employs the photo interrupter
in which the light emitting diode and the photo transistor are
integrated.
Paper empty is detected by interruption of lights with the lever-
type actuator.
Signals are inputted to the CPU (IC10-74pin) through the noise
filter of R14 and C4.
The logic of the signal inputted to the CPU is L when paper is
loaded to the tray, and H for paper empty.
R4 is the current-limiting resistor of the light emitting diode. R9
is the load resistor of the sensor.
5)
Paper surface sensor 1 (FSLD1)
The paper surface sensor 1 (FSLD1) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The paper surface is detected by interruption of lights with the
lever-type actuator.
By use of Q16, the logic of signal when the connector is dis-
connected is made the same as when light is emitted to the
sensor.
Signals are inputted to the CPU (IC10-88pin) through the noise
filter of R17 and C5.
The logic of the signal inputted to the CPU is H when light is
interrupted, and L when light is emitted to the sensor.
R5 is the current-limiting resistor of the light emitting diode.
R15 is the load resistor of the sensor.
The paper surface sensor 1 (FSLD1) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The paper surface is detected by interruption of lights with the
lever-type actuator.
By use of Q16, the logic of signal when the connector is dis-
connected is made the same as when light is emitted to the
sensor.
Signals are inputted to the CPU (IC10-88pin) through the noise
filter of R17 and C5.
The logic of the signal inputted to the CPU is H when light is
interrupted, and L when light is emitted to the sensor.
R5 is the current-limiting resistor of the light emitting diode.
R15 is the load resistor of the sensor.
Tray upper limit sensor (FULD)
Tray intermediate lower limit sensor
(FMLLD)
(FMLLD)
Tray lower limit sensor (FLLD)
Tray paper empty sensor (FBED)
Paper surface detection sensor 1
(FSLD1)
(FSLD1)
Paper surface detection sensor 2
(FSLD2)
(FSLD2)
MX-FNX1/MX-PNX1 ELECTRICAL SECTION 10 – 2
6)
Paper surface sensor 2 (FSLD2)
The paper surface sensor 2 (FSLD2) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The paper surface is detected by interruption of lights with the
lever-type actuator.
Signals are inputted to the CPU (IC10-89pin) through the noise
filter of R18 and C6.
The logic of the signal inputted to the CPU is H when light is
interrupted, and L when light is emitted to the sensor.
R10 is the current-limiting resistor of the light emitting diode.
R16 is the load resistor of the sensor.
The paper surface sensor 2 (FSLD2) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The paper surface is detected by interruption of lights with the
lever-type actuator.
Signals are inputted to the CPU (IC10-89pin) through the noise
filter of R18 and C6.
The logic of the signal inputted to the CPU is H when light is
interrupted, and L when light is emitted to the sensor.
R10 is the current-limiting resistor of the light emitting diode.
R16 is the load resistor of the sensor.
7)
Stapler HP sensor (FSTHPD)
Stapler HP sensor (FSTHPD) employs the photo interrupter in
which the light emitting diode and the photo transistor are inte-
grated.
The home position is detected by interruption of lights with the
actuator of the light-shielding plate.
Signals are inputted to the CPU (IC10-18pin) through the noise
filter of R27 and C7.
The logic of the signal inputted to the CPU is H at the stapler
unit home position.
R19 is the current-limiting resistor of the light emitting diode.
R23 is the load resistor of the sensor.
Stapler HP sensor (FSTHPD) employs the photo interrupter in
which the light emitting diode and the photo transistor are inte-
grated.
The home position is detected by interruption of lights with the
actuator of the light-shielding plate.
Signals are inputted to the CPU (IC10-18pin) through the noise
filter of R27 and C7.
The logic of the signal inputted to the CPU is H at the stapler
unit home position.
R19 is the current-limiting resistor of the light emitting diode.
R23 is the load resistor of the sensor.
8)
Empty sensor (FSTPD)
The empty sensor (FSTPD) employs the photo interrupter in
which the light emitting diode and the photo transistor are inte-
grated.
Paper empty is detected by interruption of lights with the lever-
type actuator.
By use of Q16, the logic of signal when the connector is dis-
connected is made the same as when light is emitted to the
sensor (paper empty).
Signals are inputted to the CPU (IC10-90pin) through the noise
filter of R28 and C8.
The logic of the signal inputted to the CPU is H when paper is
provided in the process tray, and L when paper is not provided.
R20 is the current-limiting resistor of the light emitting diode.
R24 is the load resistor of the sensor.
The empty sensor (FSTPD) employs the photo interrupter in
which the light emitting diode and the photo transistor are inte-
grated.
Paper empty is detected by interruption of lights with the lever-
type actuator.
By use of Q16, the logic of signal when the connector is dis-
connected is made the same as when light is emitted to the
sensor (paper empty).
Signals are inputted to the CPU (IC10-90pin) through the noise
filter of R28 and C8.
The logic of the signal inputted to the CPU is H when paper is
provided in the process tray, and L when paper is not provided.
R20 is the current-limiting resistor of the light emitting diode.
R24 is the load resistor of the sensor.
9)
Alignment plate HP sensor F (FFJHPD)
The alignment plate HP sensor F (FFJHPD) employs the photo
interrupter in which the light emitting diode and the photo tran-
sistor are integrated.
The home position is detected by interruption of lights with the
actuator of the light-shielding plate.
Signals are inputted to the CPU (IC10-57pin) through the noise
filter of R29 and C9.
The alignment plate HP sensor F (FFJHPD) employs the photo
interrupter in which the light emitting diode and the photo tran-
sistor are integrated.
The home position is detected by interruption of lights with the
actuator of the light-shielding plate.
Signals are inputted to the CPU (IC10-57pin) through the noise
filter of R29 and C9.
The logic of the signal inputted to the CPU is L at the front side
alignment guide home position.
R21 is the current-limiting resistor of the light emitting diode.
R25 is the load resistor of the sensor.
alignment guide home position.
R21 is the current-limiting resistor of the light emitting diode.
R25 is the load resistor of the sensor.
10) Alignment plate HP sensor R (FRJHPD)
The alignment plate HP sensor R (FRJHPD) employs the
photo interrupter in which the light emitting diode and the
photo transistor are integrated.
The home position is detected by interruption of lights with the
actuator of the light-shielding plate.
Signals are inputted to the CPU (IC10-58pin) through the noise
filter of R30 and C10.
The logic of the signal inputted to the CPU is L at the rear side
alignment guide home position.
R22 is the current-limiting resistor of the light emitting diode.
R26 is the load resistor of the sensor.
photo interrupter in which the light emitting diode and the
photo transistor are integrated.
The home position is detected by interruption of lights with the
actuator of the light-shielding plate.
Signals are inputted to the CPU (IC10-58pin) through the noise
filter of R30 and C10.
The logic of the signal inputted to the CPU is L at the rear side
alignment guide home position.
R22 is the current-limiting resistor of the light emitting diode.
R26 is the load resistor of the sensor.
11) Inlet port sensor (FED)
The inlet port sensor (FED) employs the photo interrupter in
which the light emitting diode and the photo transistor are inte-
grated.
The inlet port is detected by interruption of lights with the lever-
type actuator.
Signals are inputted to the CPU (IC10-71pin) through the noise
filter of R37 and C11.
The logic of the signal inputted to the CPU is H when paper is
provided, and L when paper is not provided.
R31 is the current-limiting resistor of the light emitting diode.
R34 is the load resistor of the sensor.
which the light emitting diode and the photo transistor are inte-
grated.
The inlet port is detected by interruption of lights with the lever-
type actuator.
Signals are inputted to the CPU (IC10-71pin) through the noise
filter of R37 and C11.
The logic of the signal inputted to the CPU is H when paper is
provided, and L when paper is not provided.
R31 is the current-limiting resistor of the light emitting diode.
R34 is the load resistor of the sensor.
12) Roller up/down sensor (FRLD)
The roller up/down sensor (FRLD) employs the photo inter-
rupter in which the light emitting diode and the photo transistor
are integrated.
The roller up/down is detected by interruption of lights with the
lever-type actuator.
Signals are inputted to the CPU (IC10-59pin) through the noise
filter of R38 and C12.
The logic of the signal inputted to the CPU is L when the roller
is at the upper standby position.
R32 is the current-limiting resistor of the light emitting diode.
R35 is the load resistor of the sensor.
rupter in which the light emitting diode and the photo transistor
are integrated.
The roller up/down is detected by interruption of lights with the
lever-type actuator.
Signals are inputted to the CPU (IC10-59pin) through the noise
filter of R38 and C12.
The logic of the signal inputted to the CPU is L when the roller
is at the upper standby position.
R32 is the current-limiting resistor of the light emitting diode.
R35 is the load resistor of the sensor.
13) Take-up belt sensor (FBRD)
The take-up belt sensor (FBRD) employs the photo interrupter
in which the light emitting diode and the photo transistor are
integrated.
The take-up belt is detected by interruption of lights with the
lever-type actuator.
Signals are inputted to the CPU (IC10-61pin) through the noise
filter of R39 and C50.
The logic of the signal inputted to the CPU is L when the take-
up belt is on the upper side.
R33 is the current-limiting resistor of the light emitting diode.
R36 is the load resistor of the sensor.
in which the light emitting diode and the photo transistor are
integrated.
The take-up belt is detected by interruption of lights with the
lever-type actuator.
Signals are inputted to the CPU (IC10-61pin) through the noise
filter of R39 and C50.
The logic of the signal inputted to the CPU is L when the take-
up belt is on the upper side.
R33 is the current-limiting resistor of the light emitting diode.
R36 is the load resistor of the sensor.
Stapler HP sensor (FSTHPD)
Empty sensor (FSTPD)
Alignment plate HP sensor F
(FFJHPD)
(FFJHPD)
Alignment plate HP sensor R
(FRJHPD)
(FRJHPD)
Inlet port sensor (FED)
Roller up/down sensor (FRLD)
Take-up belt sensor (FBRD)
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