Service manual

MX-LCX3 SELF DIAG MESSAGE AND TROUBLE CODE 10 – 2
2. Trouble code list
3. Trouble code details
U6-09 LCC lift motor trouble
U6-20 LCC communication trouble
U6-21 LCC transport motor trouble
U6-22 LCC 24V power abnormality
U6-23 LCC tray descending trouble
(reverse winding detection)
U6-24 LCC tray lock detection trouble
U6-51 LCC incompatibility trouble
MAIN
CODE
SUB
CODE
Title (Content) Section Operation mode Countermeasure (Remedy) Note
U6 09 Lift motor trouble LCC When the tray is working Check connection.
20 Communication trouble LCC LCC communication Turn OFF/ON the power.
21 Transport motor trouble LCC Paper feed Check connection.
22 24V trouble LCC Power ON Check connection.
23 Tray descending trouble LCC When the tray is working Check connection.
24 Tray lock trouble LCC When the tray is working Check connection.
51 LCC incompatibility trouble LCC Power ON Check connection.
Trouble content • The encoder input value is not changed in
0.2sec (1st time)/0.5sec (2nd time and later)
after rotation of the motor.
• The motor is rotated for 48sec or more.
Section PCU
Case 1 Cause Sensor trouble, LCC control PWB trouble, gear
breakage, lift motor trouble
Check
and
Remedy
Use SIM4-2 and 4-3 to check the operation of the
sensor and the lift motor. Use SIM15 to cancel the
trouble.
Trouble content LCC communication error. Communication line test
error after turning ON the power or canceling the
exclusive simulation. LCC and machine model
codes discrepancy error
Section PCU
Case 1 Cause Connector and harness connection trouble or
disconnection, LCC control PWB trouble, control
(PCU) PWB trouble, malfunction due to electrical
noises
Check
and
Remedy
Turn OFF/ON the power to cancel the trouble.
Check the connector and the harness of the
communication line.
Trouble content After passing 1 sec from turning ON the motor, the
lock state of the motor lock signal is detected
continuously for 1 sec.
Section PCU
Case 1 Cause Motor lock, motor RPM abnormality, an overcurrent
to the motor, LCC control PWB trouble
Check
and
Remedy
Use SIM4-3 to check the operation of the transport
motor.
Trouble content DC24V power is not supplied to LCC.
Section PCU
Case 1 Cause Connector and harness connection trouble or
disconnection, LCC control PWB trouble, power
unit trouble
Check
and
Remedy
Check the connector and the harness of the power
line. Check that the power unit and the LCC control
PWB is of 24V.
Trouble content Reverse winding of the LCC tray wire is detected.
Section PCU
Case 1 Cause Reverse winding of the wire
Check
and
Remedy
Check the wire.
Case 2 Cause Connector and harness connection trouble
Check
and
Remedy
Check connection of the connector and the
harness.
Case 3 Cause Reverse winding detection SW-ON, reverse
winding detection SW trouble, LCC control PWB
trouble
Check
and
Remedy
Replace the reverse winding SW and the LCC
control PWB.
Trouble content Malfunction of the LCC tray lock mechanism is
detected.
Section PCU
Case 1 Cause Tray lock mechanism trouble
Check
and
Remedy
Check the tray lock mechanism.
Case 2 Cause Connector and harness connection trouble
Check
and
Remedy
Check connection of the connector and the
harness.
Case 3 Cause Tray lock detection sensor trouble, LCC control
PWB trouble
Check
and
Remedy
Replace the tray lock detection sensor and the
LCC control PWB.
Trouble content Detection of LCC connection which is incompatible
with the MX-5500N/6200N/7000N series.
Section PCU
Case 1 Cause Connection of the LCC, which is incompatible with
the MX-5500N/6200N/7000N series is detected.
Check
and
Remedy
Connect the MX-LCX3.