Read Sharp AR-C260 (serv.man14) Service Manual online
AR-C260/C260M TROUBLESHOOTING 11 - 15
Main
code
code
Sub
code
Title
Developing unit CRUM trouble
(Yellow)
(Yellow)
F2
77
Display
Lamp/Message
Phenomenon
Detail
CRUM read/write error
Section
Developing
Case 1
Cause
Improper connection or
disconnection of the
connector and the harness
between the PCU and the
CRUM.
disconnection of the
connector and the harness
between the PCU and the
CRUM.
Check &
Remedy
Remedy
Check the connector and
the harness between the
PCU and the CRUM.
the harness between the
PCU and the CRUM.
Case 2
Cause
Developing unit trouble
Check &
Remedy
Remedy
Replace the developing
unit.
unit.
Case 3
Cause
Control PWB (PCU)
trouble
trouble
Check &
Remedy
Remedy
Replace the PCU PWB.
Main
code
code
Sub
code
Title
Trouble of image density sensor
for registration (Transfer belt
surface reflection ratio
abnormality)
for registration (Transfer belt
surface reflection ratio
abnormality)
F2
78
Display
Lamp/Message
Phenomenon
Detail
Before starting
registration, the transfer
belt surface is scanned
with the image density
sensor to adjust the sensor
gain so that the output
becomes a fixed value.
However, when the sensor
gain is changed, the value
is not within the specified
range.
registration, the transfer
belt surface is scanned
with the image density
sensor to adjust the sensor
gain so that the output
becomes a fixed value.
However, when the sensor
gain is changed, the value
is not within the specified
range.
Section
—
Case 1
Cause
Image density sensor
trouble, disconnection of
the harness between the
PCU PWB and the image
density sensor, dirt on the
image density sensor.
trouble, disconnection of
the harness between the
PCU PWB and the image
density sensor, dirt on the
image density sensor.
Check &
Remedy
Remedy
Check the sensor and the
harness.
harness.
Case 2
Cause
Calibration plate solenoid
operation trouble
operation trouble
Check &
Remedy
Remedy
Check the calibration plate
solenoid operation.
solenoid operation.
Case 3
Cause
Insufficient cleaning of the
transfer belt.
transfer belt.
Check &
Remedy
Remedy
Check the transfer belt
surface.
surface.
Main
code
code
Sub
code
Title
Half-tone process control 1st batch
trouble (Black)
trouble (Black)
F2
80
Display
Lamp/Message
Phenomenon
Detail
First step operation error
during half-tone process
control
during half-tone process
control
Section
—
Common
Check
Use SIM 44-2 to adjust the
process control sensor
gain.
process control sensor
gain.
Case 1
Cause
When "Error" occurs in the
gain adjustment of SIM 44-
2:
1. Disconnection of the
gain adjustment of SIM 44-
2:
1. Disconnection of the
harness between the
PCU PWB and the
image density sensor.
PCU PWB and the
image density sensor.
2. Image density sensor
dirt/trouble
Check &
Remedy
Remedy
1. Check connection of
the harness between
the PCU PWB and the
image density sensor.
the PCU PWB and the
image density sensor.
2. Clean/replace the
image density sensor.
Case 2
Cause
When SIM 44-2 gain
adjustment is completed:
Insufficient cleaning of the
transfer belt, calibration
plate solenoid operation
trouble
adjustment is completed:
Insufficient cleaning of the
transfer belt, calibration
plate solenoid operation
trouble
Check &
Remedy
Remedy
Check the drum surface
and the belt surface.
and the belt surface.
Main
code
code
Sub
code
Title
Half-tone process control 1st batch
trouble (Cyan)
trouble (Cyan)
F2
81
Display
Lamp/Message
Phenomenon
Detail
First step operation error
during half-tone process
control
during half-tone process
control
Section
—
Common
Check
Use SIM 44-2 to adjust the
process control sensor
gain.
process control sensor
gain.
Case 1
Cause
When "Error" occurs in the
gain adjustment of SIM 44-
2:
1. Disconnection of the
gain adjustment of SIM 44-
2:
1. Disconnection of the
harness between the
PCU PWB and the
image density sensor.
PCU PWB and the
image density sensor.
2. Image density sensor
dirt/trouble
Check &
Remedy
Remedy
1. Check connection of
the harness between
the PCU PWB and the
image density sensor.
the PCU PWB and the
image density sensor.
2. Clean/replace the
image density sensor.
Case 2
Cause
When SIM 44-2 gain
adjustment is completed:
Insufficient cleaning of the
transfer belt, calibration
plate solenoid operation
trouble
adjustment is completed:
Insufficient cleaning of the
transfer belt, calibration
plate solenoid operation
trouble
Check &
Remedy
Remedy
Check the drum surface
and the belt surface.
and the belt surface.
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