AR-C260 (serv.man14). (11) Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 13

AR-C260/C260M  TROUBLESHOOTING  11 - 13

Main 
code

Sub 

code

Title

Display

Lamp/Message

Phenomenon

Detail

Toner empty sensor output 
abnormality

Section

Cartridge

Case 1

Cause

Connector harness 
trouble, connector 
disconnection

Check & 
Remedy

1. Check connection of 

the toner empty 
sensor. 

→

 Connect it 

properly.

2. Check connection of 

the connector harness 
to the PCU PWB. 

→

 

Connect it properly.

3. Check connection of 

the cartridge. 

→

 

Connect it properly.

4. Check for disconnection 

of the harness. 

→

 

Replace the harness.

Case 2

Cause

Cartridge trouble

Check & 
Remedy

Replace the cartridge. 

Main 
code

Sub 

code

Title

Display

Lamp/Message

Phenomenon

Detail

Before starting process 
control, 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 output is not within the 
specified range. 

Section

Common

Check

Use SIM 44-2 to adjust the 
process control sensor 
gain. 

Case 1

Cause

When "Error" occurs in 
SIM 44-2:
1. Dirt/defect of the image 

density sensor

2. Disconnection of the 

harness between the 
PCU PWB and the 
image density sensor

3. Calibration plate 

solenoid operation 
trouble

Check & 
Remedy

1. Clean/replace the 

image density sensor.

2. Connect/replace the 

harness between the 
PCU PWB and the 
image density sensor.

3. Replace the calibration 

plate solenoid.

Case 2

Cause

When SIM 44-2 is 
completed:
1. Insufficient cleaning of 

the transfer belt.

Check & 
Remedy

1. Check the transfer belt 

surface. 

Main 
code

Sub 

code

Title

Display

Lamp/Message

Phenomenon

Detail

Before starting process 
control, the calibration 
plate 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 output 
is not within the specified 
range.

Section

—

Common

Check 

Use SIM 44-2 to adjust the 
process control sensor 
gain.

Case 1

Cause

When "Error" occurs in 
SIM 44-2:
1. Dirt/defect of the image 

density sensor

2. Disconnection of the 

harness between the 
PCU PWB and the 
image density sensor

Check & 
Remedy

1. Clean/replace the 

image density sensor.

2. Connect/replace the 

harness between the 
PCU PWB and the 
image density sensor.

Case 2

Cause

When SIM 44-2 is 
completed:
1. Dirt on the calibration 

plate, calibration plate 
solenoid operation 
trouble

Check & 
Remedy

1. Clean the calibration 

plate. Replace the 
calibration plate 
solenoid. 

Main 
code

Sub 

code

Title

Display

Lamp/Message

Phenomenon

Detail

Process humidity sensor 
open

Section

Process

Case 1

Cause

Process humidity sensor 
harness disconnection

Check & 
Remedy

Check connection of the 
process humidity sensor 
harness. 

Case 2

Cause

Process humidity sensor 
trouble

Check & 
Remedy

Replace the process 
humidity sensor. 

Case 3

Cause

PCU PWB trouble

Check & 
Remedy

Replace the PCU PWB.