MX-CFX1 SELF DIAG MESSAGE AND TROUBLE CODE 10 – 1
MX-CFX1
Service Manual
[10] SELF DIAG MESSAGE AND
TROUBLE CODE
Problem
The inserter does not perform at all when the main switch of
the main unit is turned ON.
Case1
Cause
Loose contact with the main unit
Check and
remedy
Check that each connector is firmly
connected.
Case2
Cause
Loose contact of the connector terminal of
the wire (interface harness) connecting with
the main unit
Check and
remedy
Check continuity in between the connector
terminals. Replace the connection wire if no
continuity is measured
Case3
Cause
JAM cover open/close switch fault
Check and
remedy
Check continuity between the switch
contacts. Replace the contacts if no
continuity is measured.
Case4
Cause
Controller PCB fault
Check and
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.
Problem
The paper feed 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
Check and
remedy
Check continuity of the connector
contacts.(CN1 to 3)
Case2
Cause
Disconnection of the motor coil
Check and
remedy
Check continuity between the connector
terminals. Replace the connection wire if no
continuity is measured.
Case3
Cause
Controller PCB fault
Check and
remedy
If the motor does not operate in the motor
single operation mode, replace the controller
PCB.
Problem
The paper is delivered without being reversed in the reverse
paper feed mode.
Case1
Cause
Connector terminal fault of the reverse
solenoid
Check and
remedy
Check continuity of the connector
contact.(CN4)
Case2
Cause
Disconnection of the solenoid coil
Check and
remedy
Inspect the coil for continuity. Replace the
coil if no continuity is measured.
Case3
Cause
Controller PCB fault
Check and
remedy
If the solenoid does not perform in the
solenoid single operation mode, replace the
controller PCB.
Problem
Paper jam is displayed on the system display.
Case1
Cause
Paper jam
Check and
remedy
Visual observation. Take out paper jams.
Case2
Cause
Reverse sensor fault
Check and
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.
Case3
Cause
Paper exit sensor fault
Check and
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.
Case4
Cause
Empty sensor fault
Check and
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.
Case5
Cause
Registration sensor fault
Check and
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.
Case6
Cause
Timing sensor fault
Check and
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.
Case7
Cause
Controller PCB fault
Check and
remedy
If the problem is not solved with the 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
Measure a voltage of TP13 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.
Case2
Cause
Controller PCB fault
Check and
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.
