Sharp AR-162 Service Manual page 44

Main Sub
code code
E1 82 Check and Check the connectors and harness
remedy of the E-Sort PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the E-Sort
PWB.
84 Content E-Sort PWB communication
trouble (Framing)
Detail Communication trouble between
MCU and E-Sort PWB (Framing
error)
Cause E-Sort PWB connector
disconnection
E-Sort PWB MCU PWB harness
failure
E-Sort Motherboard connector pin
breakage.
E-Sort PWB ROM defect, data
failure
Check and Check the connectors and harness
remedy of the E-Sort PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the E-Sort
PWB.
88 Content E-Sort PWB communication
trouble (Time-out)
Detail Communication trouble between
MCU and E-Sort PWB (Time-out
error)
Cause E-Sort PWB connector
disconnection
E-Sort PWB and MCU PWB
harness failure
E-Sort Motherboard connector pin
breakage.
E-Sort PWB ROM defect, data
failure
Check and Check the connectors and harness
remedy of the E-Sort PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the E-Sort
PWB.
E7 03 Content LSU trouble
Detail After the polygon motor becomes
active, BD signal (HSYNC) from
the LSU is not detected at the
specified times (41 ± 10 times
within 20msec).
Cause LSU connector disconnection or
LSU's inside harness
disconnection or breakage
Polygon motor rotation abnormality
Improper positioning of the laser
home position sensor in the LSU.
Laser power voltage failure
Laser emitting diode abnormality
MCU PWB abnormality
Detail of trouble
AR-162 TROUBLE CODE LIST – 3
Main Sub
code code
E7 03 Check and Improper connection of the LSU
remedy connector
Check the polygon motor
operation with SIM 25-10.
Check printing with SIM64-1.
Check laser emission of laser
emitting diode.
Check the LSU unit.
Check the MCU PWB.
04 Content CCD white level trouble
Detail CCD white reference level which
is read during the copy lamp
lighting is abnormal.
Cause Flat cable installation failure to
CCD unit
Dirt on the mirror, lens, and
reference white plate
Copy lamp lighting failure
CCD unit installation failure
CCD unit abnormality
MCU PWB abnormality
Check and Clean the mirror, the lens, and the
remedy reference white plate.
Check the copy lamp (SIM 5-3)
ON.
Carriage unit position failure
Check the sub scanning direction
distortion adjustment (F rail height).
CCD unit check
MCU PWB check
05 Content CCD black level trouble
Detail CCD black level which is read
while the copy lamp is off is
abnormal.
Cause Flat cable installation failure
CCD unit abnormality
MCU PWB abnormality
Check and Check flat cable installation to the
remedy CCD unit.
CCD unit check
MCU PWB check
F1 06 Content Shifter motor trouble
Details The home position is not detected
within 1 sec after shifter motor
drive.
Cause The shifter home position sensor
is defective.
The shifter motor is defective.
The shifter motor periphery circuit
is defective.
The condition of the MCU PWB
JP4 is wrong.
The assembly of the shifter motor
unit is improper.
Check and Check the shifter operation by
remedy means of SIM3-2 and 3.
Check the harnesses and
connectors.
Check whether the shifter unit is
properly assembled.
Check whether the condition of
the MCU PWB JP4 is correct.
Detail of trouble