AR-C170 (serv.man28). Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 26

AR-C170M  TROUBLESHOOTING  11 - 26

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Sub 

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Title

Display

Lamp/Message

Phenomenon Detail

EEPROM version error
EEPROM write error

Section

—

Case 1

Cause

EEPROM trouble,
Insertion of EEPROM which 
is not initialized or defective.

Check & 
Remedy

1. Check that the EEPROM 

is properly inserted.

2. Use SIM 16 to cancel the 

error.

Case 2

Cause

PCU PWB EEPROM 
access circuit trouble

Check & 
Remedy

1. To prevent against 

deletion of the counter 
data and the adjustment 
data, record them with 
the simulation. (When a 
printer option is installed, 
use SIM 22-1 to record 
the counter data and the 
adjustment data.)

2. Replace the PCU PWB.
3. Use SIM 16 to cancel the 

error.

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Sub 

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Lamp/Message

Phenomenon Detail

EEPROM (PCU) check sum 
error

Section

—

Case 1

Cause

EEPROM trouble

Check & 
Remedy

1. Check that the EEPROM 

is properly inserted.

2. Use SIM 16 to cancel the 

error.

Case 2

Cause

Control circuit freeze 
caused by noises, PCU 
PWB EEPROM access 
circuit trouble

Check & 
Remedy

1. To prevent against 

deletion of the counter 
data and the adjustment 
data, record them with 
the simulation. (When a 
printer option is installed, 
use SIM 22-1 to record 
the counter data and the 
adjustment data.)

2. Replace the PCU PWB.
3. Use SIM 16 to cancel the 

error.

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Lamp/Message

Phenomenon Detail

The alignment plate does 
not move from the home 
position within 1sec when it 
must move. Return to the 
home position is not 
detected for 5sec or more.

Section

ADU

Case 1

Cause

Home position sensor 
trouble

Check & 
Remedy

Use SIM 9-2 to detect the 
home position sensor.

Case 2

Cause

Alignment plate shift motor 
trouble

Check & 
Remedy

Use SIM 9-4 to check the 
alignment plate operation.

Case 3

Cause

Disconnection of the 
harness between the ADU 
control PWB and the motor 
sensor.

Check & 
Remedy

Check connection of the 
harness between the ADU 
control PWB and the motor 
sensor.

Case 4

Cause

Alignment plate operation 
belt, gear breakage or 
improper adjustment

Check & 
Remedy

Remove the ADU, and 
check for breakage of the 
gear and the belt.

Main 
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Sub 

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Title

Display

Lamp/Message

Phenomenon Detail

Desk communication error, 
communication test error 
when turning on the power 
or after canceling the 
exclusive simulation.

Section

Desk

Case 1

Cause

Improper connection or 
disconnection of the 
connector and the harness.

Check & 
Remedy

Check the connector and 
the harness in the 
communication line.
Turn OFF/ON the power to 
cancel the error.

Case 2

Cause

Desk control PWB trouble, 
control PWB (PCU) trouble, 
malfunction caused by 
noises

Check & 
Remedy

Turn OFF/ON the power to 
cancel the error.