Sharp MX 3501N - Color Laser - Copier, Service Manual

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MX3500N SELF DIAG AND TROUBLE CODE 8 – 28
U6-09 LCC lift motor trouble
U6-10 Desk transport motor trouble
U6-20 LCC communication trouble
U6-21 LCC transport motor trouble
U6-22 LCC 24V power abnormality
U6-50 Desk incompatibility trouble
U6-51 LCC incompatibility trouble
UC-02 CPT-ASIC abnormality
UC-20 Document control module trouble
Trouble content • The encoder input value is not changed in
0.13sec (1st time)/0.5sec (2nd time and later)
after rotation of the motor.
• The motor is rotated for 18sec or more.
• The encoder is changed after passing a certain
time from stopping the motor. (2sec, 10 count 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 Desk transport motor operation trouble
Section PCU
Case 1 Cause Motor lock, motor RPM abnormality, overcurent to
the motor, console finisher control PWB trouble
Check and
remedy Use SIM 4-3 to check the operation of the desk
transport motor.
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
PWB (PCU) 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 • The encoder input value is not changed in
0.06sec after turning on the motor.
• The encoder input value is changed after a
certain time from turning OFF the motor. (After
5sec, count is made for 0.1sec to get 100 or
more count.)
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 Detection of desk connection incompatible with the
MX-3500/4500/3501/4501 **
Section PCU
Case 1 Cause Connection of a desk which is incompatible with
the MX-3500/4500/3501/4501** is detected.
Check and
remedy Connect the MX-DEX3/DEX4.
Trouble content Detection of LCC connection which is incompatible
with the MX-3500/4500/3501/4501 **.
Section PCU
Case 1 Cause Connection of the LCC, which is incompatible with
the MX-3500/4500/3501/4501 ** is detected.
Check and
remedy Connect the MX-LCX1.
Trouble content CPT-ASIC access error (When the ASIC does not
operate normally.)
Section Scanner
Case 1 Cause CPT-ASIC abnormality, SCU PWB abnormality
Check and
remedy Turn OFF/ON the power several times. If the
trouble still occurs, replace the SCU PWB or the
CPT-ASIC.
Trouble content Communication error between SCU and DOCC
Communication line test error when turning on the
power or after canceling an exclusion simulation.
Section Scanner
Case 1 Cause Connector or harness connection error or
disconnection
Check and
remedy Check the connector and harness in the
communication line.
Case 2 Cause Control PWB (SCU) trouble, DOCC PWB trouble.
Check and
remedy Replace the SCU PWB or the DOCC PWB.
Case 3 Cause Malfunction due to electrical noises.
Check and
remedy Turn OFF/ON the power to electrical cancel the
trouble.