Sharp AR-C260 User Manual download pdf (Page 14)

AR-BC320 TROUBLESHOOTING 11 - 14

Main

code

Sub

code

Title

Developing unit CRUM trouble

(Cyan)

F2 75 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.

Check &

Remedy

Check the connector and

the harness between the

PCU and the CRUM.

Case 2 Cause Developing unit trouble

Check &

Remedy

Replace the developing

unit.

Case 3 Cause Control PWB (PCU)

trouble

Check &

Remedy

Replace the PCU PWB.

Main

code

Sub

code

Title

Developing unit CRUM trouble

(Magenta)

F2 76 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.

Check &

Remedy

Check the connector and

the harness between the

PCU and the CRUM.

Case 2 Cause Developing unit trouble

Check &

Remedy

Replace the developing

unit.

Case 3 Cause Control PWB (PCU)

trouble

Check &

Remedy

Replace the PCU PWB.

Main

code

Sub

code

Title

Developing unit CRUM trouble

(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.

Check &

Remedy

Check the connector and

the harness between the

PCU and the CRUM.

Case 2 Cause Developing unit trouble

Check &

Remedy

Replace the developing

unit.

Case 3 Cause Control PWB (PCU)

trouble

Check &

Remedy

Replace the PCU PWB.

Main

code

Sub

code

Title

Trouble of image density sensor

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.

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.

Check &

Remedy

Check the sensor and the

harness.

Case 2 Cause Calibration plate solenoid

operation trouble

Check &

Remedy

Check the calibration plate

solenoid operation.

Case 3 Cause Insufficient cleaning of the

transfer belt.

Check &

Remedy

Check the transfer belt

surface.

Main

code

Sub

code

Title

Half-tone process control 1st

batch trouble (Black)

F2 80 Display Lamp/Message

Phenomenon Detail First step operation error

during half-tone process

control

Section —

Common Check Use SIM 44-2 to adjust the

process control sensor

gain.

Case 1 Cause When "Error" occurs in the

gain adjustment of SIM 44-

2:

1. Disconnection of the

harness between the

PCU PWB and the

image density sensor.

2. Image density sensor

dirt/trouble

Check &

Remedy

1. Check connection of the

harness between 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

Check &

Remedy

Check the drum surface

and the belt surface.

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[11] TROUBLESHOOTING 1
6. Details 3

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