AR-C260 (serv.man14). (11) Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 3

AR-C260/C260M  TROUBLESHOOTING  11 - 3

AR-C260
AR-C260M

H4

00

Fusing section low temperature trouble 
(HL1)

01

Fusing section low temperature trouble 
(HL2)

H5

01

Five continuous detections of POD1 not-
reached jam

H8

01

Fusing unit initial detection trouble

L1

00

Mirror feed trouble

L3

00

Mirror return trouble

L4

02

Paper feed motor lock trouble

06

Transfer belt lift motor trouble

07

Transfer belt motor trouble

11

Shift motor trouble

L8

01

Full wave signal not provided

02

Full wave signal width abnormality

04

Main power switch abnormality 
detection

PF

00

RIC copy inhibit signal reception 

U0

00

ICU-OPE communication trouble (ICU/
OPE detection)

U1

02

RTC read trouble

U2

00

EEPROM read/write error (ICU 
detection)

11

EEPROM check sum error (ICU 
detection)

30

Production No. data discrepancy 
(ICU 

⇔

 ICU)

80

EEPROM read/write error (SCN 
detection)

81

EEPROM check sum error (SCN 
detection)

90

EEPROM read/write error (PCU 
detection)

91

EEPROM check sum error (PCU 
detection)

U4

02

ADU alignment plate operation 
abnormality

U5

00

ADF communication trouble

01

ADF resist sensor defect

02

ADF repulsion sensor defect

03

ADF timing sensor defect

11

Paper feed motor operation abnormality

U6

00

Desk communication trouble

01

Desk tray 1 lift motor trouble

02

Desk tray 2 lift motor trouble

03

Desk tray 3 lift motor trouble

10

Desk transport motor trouble

U7

00

RIC communication trouble

Model

Main 
code

Sub 

code

Content

Main 
code

Sub 

code

Title

Display

Lamp/Message

Phenomenon

Detail

Black image density 
sensor trouble /Transfer 
trouble (Black) /The 
deference between the 
transfer belt surface 
detection level and the 
black toner patch density 
detection level is normal. 
(Judged in black image 
density sensor calibration)

Section

Transfer

Case 1

Cause

Black image density 
sensor trouble

Check & 
Remedy

Black density image 
sensor cleaning, 
replacement

Case 2

Cause

Transfer voltage trouble

Check & 
Remedy

Check and adjust the 
transfer voltage. 

Case 3

Cause

High voltage PWB trouble

Check & 
Remedy

Replace the high voltage 
PWB.

Case 4

Cause

Transfer unit trouble

Check & 
Remedy

Check the transfer belt 
surface for dirt and 
scratches.
Replace the transfer belt, 
replace the cleaning blade, 
replace the transfer unit.

Case 5

Cause

PCU PWB trouble

Check & 
Remedy

PCU PWB replacement

Case 6

Cause

Photoconductor unit 
trouble

Check & 
Remedy

Replace the 
photoconductor unit.

Case 7

Cause

Developing unit trouble

Check & 
Remedy

Replace the developing 
unit

Case 8

Cause

Connector, harness 
trouble (PCU PWB, high 
voltage PWB, image 
density sensor, 
photoconductor unit, 
transfer unit, developing 
unit)

Check & 
Remedy

Check contact. Replace 
the harness. Replace the 
PWB.