Sharp AR-CF2 (serv.man2) Service Manual ▷ View online
AR-CF2 TROUBLESHOOTING 8 - 1
[8] TROUBLESHOOTING
Problem
The inserter does not perform at all when the main
switch of the main unit is turned ON.
switch of the main unit is turned ON.
Case1
Cause
Loose contact with the main unit
Check and
remedy
remedy
Check that each connector is firmly
connected.
connected.
Case2
Cause
Loose contact of the connector terminal of
the wire (interface harness) connecting
with the main unit
the wire (interface harness) connecting
with the main unit
Check and
remedy
remedy
Check continuity in between the
connector terminals. Replace the
connection wire if no continuity is
measured
connector terminals. Replace the
connection wire if no continuity is
measured
Case3
Cause
JAM cover open/close switch fault
Check and
remedy
remedy
Check continuity between the switch
contacts., Replace the contacts if no
continuity is measured.
contacts., Replace the contacts if no
continuity is measured.
Case4
Cause
Controller PCB fault
Check and
remedy
remedy
Check that 24 V DC and 5 V DC are
supplied from the main unit after the
above cases 1 to 3 are confirmed. If 24 V
and 5 V are not present at CN1-2 pin and
IC5-32 pin on the PCB, replace the
controller PCB.
supplied from the main unit after the
above cases 1 to 3 are confirmed. If 24 V
and 5 V are not present at CN1-2 pin and
IC5-32 pin on the PCB, replace the
controller PCB.
Problem
The paper feed motor does not operate.
The reverse motor does not operate.
The horizontal transport motor does not operate.
The reverse motor does not operate.
The horizontal transport motor does not operate.
Case1
Cause
Loose contact of the motor connector
terminal
terminal
Check and
remedy
remedy
Check continuity of the connector
contacts.(CN1 to 3)
contacts.(CN1 to 3)
Case2
Cause
Disconnection of the motor coil
Check and
remedy
remedy
Check continuity between the connector
terminals. Replace the connection wire if
no continuity is measured.
terminals. Replace the connection wire if
no continuity is measured.
Case3
Cause
Controller PCB fault
Check and
remedy
remedy
If the motor does not operate in the motor
single operation mode, replace the
controller PCB.
single operation mode, replace the
controller PCB.
Problem
The paper is delivered without being reversed in
the reverse paper feed mode.
the reverse paper feed mode.
Case1
Cause
Connector terminal fault of the reverse
solenoid
solenoid
Check and
remedy
remedy
Check continuity of the connector
contact.(CN4)
contact.(CN4)
Case2
Cause
Disconnection of the solenoid coil
Check and
remedy
remedy
Inspect the coil for continuity. Replace the
coil if no continuity is measured.
coil if no continuity is measured.
Case3
Cause
Controller PCB fault
Check and
remedy
remedy
If the solenoid does not perform in the
solenoid single operation mode, replace
the controller PCB.
solenoid single operation mode, replace
the controller PCB.
Problem
Paper jam is displayed on the system display.
Case1
Cause
Paper jam
Check and
remedy
remedy
Visual observation. Take out paper jams.
Case2
Cause Reverse
sensor
fault
Check and
remedy
remedy
Measure a voltage of TP2 on the
controller PCB and check that 3 to 3.6 V
is observed when no paper is stacked,
and that 1.5 V or less is observed when
paper is stacked. Replace the sensor if
the measured voltage exceeds these
ranges.
controller PCB and check that 3 to 3.6 V
is observed when no paper is stacked,
and that 1.5 V or less is observed when
paper is stacked. Replace the sensor if
the measured voltage exceeds these
ranges.
Case3
Cause
Paper exit sensor fault
Check and
remedy
remedy
Measure a voltage of TP7 on the
controller PCB and check that 5 V is
observed when no paper is stacked, and
that 1 V or less is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
controller PCB and check that 5 V is
observed when no paper is stacked, and
that 1 V or less is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
Case4
Cause
Empty sensor fault
Check and
remedy
remedy
Measure a voltage of TP4 on the
controller PCB and check that 1 V or less
is observed when no paper is stacked,
and that 5 V is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
controller PCB and check that 1 V or less
is observed when no paper is stacked,
and that 5 V is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
Case5
Cause
Registration sensor fault
Check and
remedy
remedy
Measure a voltage of TP5 on the
controller PCB and check that 5 V is
observed when no paper is stacked, and
that 1 V or less is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
controller PCB and check that 5 V is
observed when no paper is stacked, and
that 1 V or less is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
Case6
Cause
Timing sensor fault
Check and
remedy
remedy
Measure a voltage of TP6 on the
controller PCB and check that a 5 V is
observed when no paper is stacked, and
that 1 V or less is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
controller PCB and check that a 5 V is
observed when no paper is stacked, and
that 1 V or less is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
Case7
Cause
Controller PCB fault
Check and
remedy
remedy
If the problem is not solved with the
sensors whose level changes when each
is turned ON/OFF, replace the controller
PCB.
sensors whose level changes when each
is turned ON/OFF, replace the controller
PCB.
Problem
The machine does not detect the paper.
Case1
Cause
Tray sensor fault
Check and
remedy
remedy
Measure a voltage of TP13 on the
controller PCB and check thatV is
observed when no paper is stacked, and
that 1 V or less is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
controller PCB and check thatV is
observed when no paper is stacked, and
that 1 V or less is observed when paper is
stacked. Replace the sensor if the
measured voltage exceeds these ranges.
Case2
Cause
Controller PCB fault
Check and
remedy
remedy
If the problem is not solved with a change
in the sensor level after the above case 1
is confirmed, replace the controller PCB.
in the sensor level after the above case 1
is confirmed, replace the controller PCB.
: Jan. 9 2004
1
AR-CF2 TROUBLESHOOTING 8 - 2
Problem
Tray alarm is displayed on the system display.
Case1
Cause
Sub-tray pulling detection sensor fault
Check and
remedy
remedy
Measure a voltage on TP14 on the
controller PCB and check that 5 V is
observed when the sub-tray is in place,
and that 1 V or less is observed when the
sub-tray is pulled out. Replace the sensor
if the measured voltage exceeds these
ranges.
controller PCB and check that 5 V is
observed when the sub-tray is in place,
and that 1 V or less is observed when the
sub-tray is pulled out. Replace the sensor
if the measured voltage exceeds these
ranges.
Case2
Cause
Sub-tray pulling detection sensor fault
Check and
remedy
remedy
Measure a voltage of TP15 on the
controller PCB and check that 5 V is
observed when the tray is in place, and
that 1 V or less is observed when the tray
is pulled. Replace the sensor if the
measured voltage exceeds these ranges.
controller PCB and check that 5 V is
observed when the tray is in place, and
that 1 V or less is observed when the tray
is pulled. Replace the sensor if the
measured voltage exceeds these ranges.
Case3
Cause
Controller PCB fault
Check and
remedy
remedy
If the problem is not solved by a change in
the sensor level after the above cases 1
and 2 are confirmed, replace the
controller PCB.
the sensor level after the above cases 1
and 2 are confirmed, replace the
controller PCB.
Problem
Cover open is displayed on the system display.
Case1
Cause
JAM cover open/close switch fault
Check and
remedy
remedy
Check continuity between the switch
contacts., Replace the switch if no
conduction is measured.
contacts., Replace the switch if no
conduction is measured.
Case2
Cause
Reverse unit open/close sensor fault
Check and
remedy
remedy
Measure a voltage of TP9 on the
controller PCB and check that 1 V or less
is observed when the reverse unit is
open, and that 5 V is observed when the
reverse unit is closed. Replace the sensor
if the measured voltage exceeds these
ranges.
controller PCB and check that 1 V or less
is observed when the reverse unit is
open, and that 5 V is observed when the
reverse unit is closed. Replace the sensor
if the measured voltage exceeds these
ranges.
Case3
Cause
Rack cover open/close sensor fault
Check and
remedy
remedy
Measure the voltage of TP10 on the
control PWB and check that it is 1V or
less when the base cover is opened and
5V when closed.
If the voltage is outside the above
specifications, replace the sensor with a
new one.
control PWB and check that it is 1V or
less when the base cover is opened and
5V when closed.
If the voltage is outside the above
specifications, replace the sensor with a
new one.
Case4
Cause
Controller PCB fault
Check and
remedy
remedy
If the problem is not solved by a change
in the sensor level after the above cases
1 to 3 are confirmed, replace the
controller PCB.
in the sensor level after the above cases
1 to 3 are confirmed, replace the
controller PCB.
Problem
Inserter unset is displayed on the system display.
Case1
Cause
Set sensor fault
Check and
remedy
remedy
Measure a voltage of TP16 on the
controller PCB and check that 5 V is
observed when the inserter is set, and
that 1 V or less is observed when the
inserter is not set. Replace the sensor if
the measured voltage exceeds these
ranges.
controller PCB and check that 5 V is
observed when the inserter is set, and
that 1 V or less is observed when the
inserter is not set. Replace the sensor if
the measured voltage exceeds these
ranges.
Case2
Cause
Controller PCB fault
Check and
remedy
remedy
If the problem is not solved by a change
in the sensor level after the above case 1
is confirmed, replace the controller PCB.
in the sensor level after the above case 1
is confirmed, replace the controller PCB.
1
Problem
The registration clutch does not perform.
Case1
Cause
Loose contact of the clutch connector
terminal
terminal
Check and
remedy
remedy
Check continuity of the connector
contacts. (CN4)
contacts. (CN4)
Case2
Cause
Disconnection of the clutch coils
Check and
remedy
remedy
Inspect the coils for continuity. Replace
the coils if no continuity is measured.
the coils if no continuity is measured.
Case3
Cause
Controller PCB fault
Check and
remedy
remedy
If the clutch does not perform in the clutch
single operation mode, replace the
controller PCB.
single operation mode, replace the
controller PCB.
AR-CF2 ELECTRICAL SECTION 9 - 1
[9] ELECTRICAL SECTION
1. Actual Wiring Chart
Reverse Sensor
Paper Exit Sensor
Reverse Unit Open/Closed
Sensor
Sensor
Chassis Cover Open/Closed
Sensor
Sensor
Set Sensor
Empty Sensor
Registration Sensor
Timing Sensor
Tray
Tray Volume
Operation Panel
Housing
Contact
Contact
Housing
Contact
Contact
Housing
Contact
Contact
Housing
Contact
Housing
Contact
Tray Sensor
Tray Drawn
Sensor
Sensor
Tray Folded
Sensor
Sensor
Housing
Contact
Contact
Housing
Contact
Contact
Housing
Contact
Housing
Contact
Contact
Housing
Contact
Contact
Housing
Contact
Contact
Housing
Contact
Contact
Housing
Contact
Contact
Contact
Contact
Housing
Contact
Contact
Contact
Contact
Sleeve
FASTON Terminal
FASTON Terminal
JAM Cover Open/Closed SW
Finisher I/F
Main Unit I/F
Flapper Solenoid
Registration Clutch
Horizontal
Transport Motor
Transport Motor
Reverse Motor
Paper Feed Motor
BE:
BN:
BK:
RD:
YW:
WE:
OE:
GY:
SB:
PK:
VT:
BN:
BK:
RD:
YW:
WE:
OE:
GY:
SB:
PK:
VT:
Blue
Brown
Black
Red
Yellow
White
Orange
Gray
Sky-blue
Pink
Violet
Brown
Black
Red
Yellow
White
Orange
Gray
Sky-blue
Pink
Violet
AR-CF2 ELECTRICAL SECTION 9 - 2
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 circuits.
the sensors, the switches, and the main unit; driving the motors, the
solenoid, and the clutch; the CPU and associated circuits.
B. Block Diagram
Inserter
Main Unit
RXD0
SGND
TXD0
DC+24V
DC+24V
DC+5V
Finisher
RXD1
SGN
TXD1
DC+24V
S_SEN
EMP_SEN
T_VR
REG_SEN
TIM_SEN
T_SEN
TH_SEN
TS_SEN
HYK_SEN
KC_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
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