Read Sharp MX-M950 / MX-MM1100 (serv.man39) Service Manual online
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 30
U5-30
SPF tray lift-up trouble
U5-31
SPF tray lift-down trouble
U6-09
Side LCC lift motor trouble
U6-20
LCC communication trouble
U6-21
LCC transport motor trouble
U6-22
LCC 24V power abnormality
U6-23
A3LCC tray lock detection trouble
(Reverse winding)
(Reverse winding)
U6-24
A3LCC tray lock detection trouble
U6-28
LCT1 paper feed position abnormality
U6-29
LCT1 lift-up trouble
Detail
The lift-up trouble (STUD is not turned ON within the
specified time) is detected 5 times continuously.
When lifting again, a trouble occurs from the first time.
specified time) is detected 5 times continuously.
When lifting again, a trouble occurs from the first time.
Section
SCU
Cause
STUD / STLD trouble
Check &
Remedy
Remedy
Check the STUD / STLD and their harness and the
connector.
Check the lift-up related circuit (DSPFcnt, DSPF-Driver).
Check the lift-up unit.
connector.
Check the lift-up related circuit (DSPFcnt, DSPF-Driver).
Check the lift-up unit.
Detail
The lift-down trouble is detected
(STLD is not turned OFF within the specified time.)
(STLD is not turned OFF within the specified time.)
Section
SCU
Cause
STUD / STLD trouble
Check &
Remedy
Remedy
Check the STUD / STLD and the harness and the
connector.
Check the lift-up related circuit (DSPFcnt, DSPF-Driver).
Check the lift-up unit.
connector.
Check the lift-up related circuit (DSPFcnt, DSPF-Driver).
Check the lift-up unit.
Detail
• The encoder input value is not changed in 0.13sec
(first time) / 0.5sec (2nd or later) after rotation of the
motor
motor
• The motor is rotated for 18sec or more
• The encoder is changed after a certain time of
• The encoder is changed after a certain time of
stopping the motor (2 sec, 10 count or more)
Section
PCU
Cause
Sensor trouble.
LCC control PWB trouble.
Gear breakage.
Lift motor trouble.
LCC control PWB trouble.
Gear breakage.
Lift motor trouble.
Check &
Remedy
Remedy
Use Sim. 4-2 and 4-3 to check the operations of the
sensor and the lift motor.
Use Sim. 15 to cancel the trouble.
sensor and the lift motor.
Use Sim. 15 to cancel the trouble.
Detail
Communication error with the LCC.
Communication line test error after turning on the power
or canceling the exclusive simulation.
The model code discrepancy with the machine model.
Communication line test error after turning on the power
or canceling the exclusive simulation.
The model code discrepancy with the machine model.
Section
PCU
Cause
Connection trouble or disconnection of the connector
and the harness.
LCC control PWB trouble.
Control PWB (PCU) trouble.
Malfunction due to noises.
and the harness.
LCC control PWB trouble.
Control PWB (PCU) trouble.
Malfunction due to noises.
Check &
Remedy
Remedy
Turn OFF / ON the power to cancel the trouble.
Check the connector and the harness in the
communication line.
Check the connector and the harness in the
communication line.
Detail
• The encoder input value is not changed in 0.06sec
after turning on the motor.
• The encoder input is changed in a certain time after
turning off the motor. (The count reaches 100 when
counting for 0.1sec after 5 sec.)
counting for 0.1sec after 5 sec.)
Section
PCU
Cause
Motor lock, motor rpm abnormality, an overcurrent to
the motor.
LCC control PWB trouble.
the motor.
LCC control PWB trouble.
Check &
Remedy
Remedy
Use Sim. 4-3 to check the operation of the transport
motor.
motor.
Detail
DC 24V is not supplied to the LCC
Section
PCU
Cause
Connection trouble or disconnection of the connector
and the harness.
LCC control PWB trouble.
Power source unit trouble.
and the harness.
LCC control PWB trouble.
Power source unit trouble.
Check &
Remedy
Remedy
Check the connector and the harness in the power
source line.
Check that the power unit and the LCC control PWB is
of 24V.
source line.
Check that the power unit and the LCC control PWB is
of 24V.
Detail
The LCC tray wire is wound in reverse
Section
PCU
Cause
Reverse winding SW-ON.
The wire is wound in reverse. Reverse winding
detection SW trouble.
Connection trouble of the connector and the harness.
LCC control PWB trouble.
The wire is wound in reverse. Reverse winding
detection SW trouble.
Connection trouble of the connector and the harness.
LCC control PWB trouble.
Check &
Remedy
Remedy
Check the wire. Replace the reverse winding SW and
the LCC control PWB.
Check connection of the connector and the harness.
the LCC control PWB.
Check connection of the connector and the harness.
Detail
The LCC tray lock function does not operate normally
Section
PCU
Cause
Tray lock mechanism trouble.
Tray lock sensor trouble.
Connection trouble of the connector and the harness.
LCC control PWB trouble.
Tray lock sensor trouble.
Connection trouble of the connector and the harness.
LCC control PWB trouble.
Check &
Remedy
Remedy
Check the tray lock mechanism.
Replace the tray lock sensor and the LCC control PWB.
Check connection of the connector and the harness.
Replace the tray lock sensor and the LCC control PWB.
Check connection of the connector and the harness.
Detail
When the lift-up operation is started, the upper limit
sensor is turned OFF before the pick-up SOL is turned
ON. (Normally the upper limit sensor is turned OFF only
after turning ON the pick-up SOL.)
sensor is turned OFF before the pick-up SOL is turned
ON. (Normally the upper limit sensor is turned OFF only
after turning ON the pick-up SOL.)
Section
PCU
Cause
Sensor abnormality, connector and harness connection
trouble, PWB trouble.
The pick-up roller is kept in the lower position
mechanically.
trouble, PWB trouble.
The pick-up roller is kept in the lower position
mechanically.
Check &
Remedy
Remedy
Use Sim. 4-2 and Sim. 4-3 to check the operation of the
upper limit sensor and the lift-up operation, and check
the wiring.
upper limit sensor and the lift-up operation, and check
the wiring.
Detail
When lifting up, the upper limit is not detected within the
specified time (A4 LCC: 10 sec, A3 LCC: 8 sec)
specified time (A4 LCC: 10 sec, A3 LCC: 8 sec)
Section
PCU
Cause
Upper limit sensor abnormality, tray lift-up motor lock,
connector/harness connection trouble, PWB trouble
connector/harness connection trouble, PWB trouble
Check &
Remedy
Remedy
Use Sim. 4-2 and Sim. 4-3 to check the operation of the
upper limit sensor and the lift-up operation, and check
the wiring.
After making the countermeasure for the trouble
section, use Sim. 15 to cancel the trouble.
upper limit sensor and the lift-up operation, and check
the wiring.
After making the countermeasure for the trouble
section, use Sim. 15 to cancel the trouble.
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