Read Sharp MX-M850 (serv.man38) Service Manual online
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 32
U6-68
Manual feed tray paper feed position
abnormality
abnormality
U6-69
Manual feed tray lift-up trouble
U9-00
Communication trouble between the
controller and the operation
controller and the operation
UC-02
CPT-ASIC abnormality
UC-12
CPT-ASIC abnormality
(DSPF detection)
(DSPF detection)
UC-20
Anti copy module trouble
UC-21
The DOCC (Document control) PWB is
not detected
not detected
UC-22
CPT PWB is not detected.
UC-30
Anti copy module trouble
(DSPF detection)
(DSPF detection)
UC-31
The DOCC (Document control) PWB is
not detected. (DPSF PWB side)
not detected. (DPSF PWB side)
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 (10 sec)
specified time (10 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.
Detail
Communication establishment error / Framing / Parity /
Protocol error
Protocol error
Section
ICU
Cause
Slave unit PWB connector connection trouble.
Harness trouble between the slave unit PWB and the
ICU PWB.
Connector pin breakage of the mother board of the
slave unit PWB.
Harness trouble between the slave unit PWB and the
ICU PWB.
Connector pin breakage of the mother board of the
slave unit PWB.
Check &
Remedy
Remedy
Check connection of the connector and the harness
between the slave unit PWB and the ICU PWB.
Check the earth wire of the machine.
between the slave unit PWB and the ICU PWB.
Check the earth wire of the machine.
Detail
Access error to the CPT-ASIC
(The ASIC does not operate normally)
(The ASIC does not operate normally)
Section
SCU
Cause
B to B connector connection abnormality.
SCU PWB abnormality.
CPT-ASIC abnormality.
SCU PWB abnormality.
CPT-ASIC abnormality.
Check &
Remedy
Remedy
Check the B to B connector.
Replace the SCU PWB, or replace the option PWB.
Replace the SCU PWB, or replace the option PWB.
Detail
Access abnormality to CPT-ASIC
(When ASIC does not operate normally)
(When ASIC does not operate normally)
Section
SCU
Cause
B to B connector connection abnormality.
DSPF PWB abnormality.
CPT-ASIC abnormality
DSPF PWB abnormality.
CPT-ASIC abnormality
Check &
Remedy
Remedy
Check the B to B connector.
Replace the DSPF PWB, or replace the option PWB.
Replace the DSPF PWB, or replace the option PWB.
Detail
Communication error between the SCU and the DOCC.
Communication test error when turning on the power or
after canceling the exclusive simulation.
Communication test error when turning on the power or
after canceling the exclusive simulation.
Section
SCU
Cause
Contact trouble or disconnection of the connector and
the harness.
Control PWB (SCU) trouble or DOCC PWB trouble.
Malfunction due to noises.
the harness.
Control PWB (SCU) trouble or DOCC PWB trouble.
Malfunction due to noises.
Check &
Remedy
Remedy
Turn OFF / ON the power to cancel.
Check the connector and the harness of the
communication line.
Replace the SCU PWB or replace the DOCC PWB.
Check the connector and the harness of the
communication line.
Replace the SCU PWB or replace the DOCC PWB.
Detail
The DOCC (Document control) PWB is not detected in
the DSK model
the DSK model
Section
ICU
Cause
The DOCC (Document control) PWB is not installed in
the DSK model. Connection detection signal trouble.
the DSK model. Connection detection signal trouble.
Check &
Remedy
Remedy
Check the connection detection signal of the DOCC
(Document control) PWB, or replace the PWB.
(Document control) PWB, or replace the PWB.
Detail
The CPT PWB is not detected under the color kit enable
state
state
Section
ICU
Cause
The CPT PWB is not installed under the color kit enable
state, or the connection detection signal trouble.
state, or the connection detection signal trouble.
Check &
Remedy
Remedy
Check the connection detection signal of the CPT PWB,
or replace the PWB.
or replace the PWB.
Detail
Access abnormality to DOCC-ASIC
(when ASIC does not operate normally)
(when ASIC does not operate normally)
Section
SCU
Cause
B to B connector connection abnormality.
DSPF PWB abnormality, DOCC-ASIC abnormality.
DSPF PWB abnormality, DOCC-ASIC abnormality.
Check &
Remedy
Remedy
Check the B to B connector.
Replace the DSPF PWB, or replace the option PWB.
Replace the DSPF PWB, or replace the option PWB.
Detail
DOCC (document control) PWB cannot be detected in
the DSK model
the DSK model
Section
ICU
Cause
DOCC (document control) PWB is not installed in the
DSK model, or the connection detection signal trouble.
DSK model, or the connection detection signal trouble.
Check &
Remedy
Remedy
Check the connection detection signal of the DOCC
(document control) PWB, or replace the PWB.
(document control) PWB, or replace the PWB.
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