Sharp AR-162 Service Manual page 48

Main Sub
code code
L4 01 Check and Check the main motor operation
remedy with SIM 25-1.
Check the harness and the
connector between the MCU PWB
and the main motor.
10 Content Job separator motor trouble
Details When the home is not detected
within 2.5 sec after the job
separator tray starts to move
upwards.
Cause The job separator upper limit
detection sensor is defective.
The job separator motor is
defective.
The job separator motor periphery
circuit is defective.
The condition of the MCU PWB
JP5 is wrong.
Check and Check the job separator operation
countermeas by means of SIM3-2 and 4.
ure Check the harnesses and
connectors.
Check whether the condition of
the MCU PWB JP5 is correct.
L6 10 Content Polygon motor lock
Detail The lock signal (the specified
rotation speed signal) is not
supplied within the specified time
(about 6 sec)after starting the
polygon motor rotation.
Cause LSU connector disconnection or
harness disconnection in the LSU.
Check and Check the operation of the
remedy polygon motor with SIM 25-10.
Check the harness and the
connector connection.
LSU replacement
L8 01 Content Zero cross pulse (FW) trouble
Detail Zero cross pulse width is shifted
by 55Hz ± 10% or more.
Cause MCU PWB defect
Power supply unit breakdown
Check and Check the harness and the
remedy connector.
MCU PWB replacement
Power supply unit replacement
U2 04 Content EEPROM serial communication
error
Detail Error in communication with
EEPROM
Cause EEPROM failure
Installation of uninitialized EEPROM
MCU PWB EERPOM access
circuit failure
Check and Check that the EEPROM is
remedy properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
Detail of trouble
AR-162 TROUBLE CODE LIST – 7
Main Sub
code code
U2 11 Content Counter check sum error
Detail Counter check sum value stored
in the EEPROM is abnormal.
Cause EEPROM failure
Control circuit hung up by noises
MCU PWB EEPROM access
circuit defect
Check and Check that the EEPROM is
remedy properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
12 Content Adjustment value check sum error
(EEPROM)
Detail Adjustment value data area check
sum error
Cause EEPROM failure
Control circuit hung up by noises
MCU PWB EEPROM access
circuit failure
Check and Check that the EEPROM is
remedy properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
40 Content CRUM communication error
Detail Toner cartridge CRUM data read
error
Cause A toner cartridge of a different
destination is installed.
EEPROM trouble
Check the destination setup.
Toner cartridge CRUM PWB trouble
MCU PWB trouble
CRUM connector disconnection
Check and Install a specified toner cartridge.
remedy Check the SIM 26-6 setup.
Replace the EEPROM.
Replace the toner cartridge.
Replace the MCU PWB.
Check connection of the CRUM
connector.
Execute SIM 16.
U3 29 Content Mirror base home position error
Detail Home position is not detected
when starting mirror base shift.
Cause Mirror unit defect
Mirror home position sensor defect
MCU PWB decfect
Scanner wire disconnection
Check and Check the scanning operation with
remedy SIM 1-1.
U9 00 Content Communication trouble between
MCU and OPE (OPE detection)
Detail Communication setup error,
framing, parity, protocol error
Detail of trouble