AR-C260 (serv.man14). (11) Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 23

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AR-C260/C260M  TROUBLESHOOTING  11 - 23
Main 
code
Sub 
code
Title
EEPROM read/write error (SCN)
U2
80
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
SCN 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 SCN 
PWB.
3. Use SIM 16 to cancel 
the error.
Main 
code
Sub 
code
Title
Adjustment value check sum error 
(SCN)
U2
81
Display
Lamp/Message
Phenomenon
Detail
EEPROM (SCN) 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
SCN 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 SCN 
PWB.
3. Use SIM 16 to cancel 
the error.
Main 
code
Sub 
code
Title
EEPROM read/write error (PCU)
U2
90
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.
Main 
code
Sub 
code
Title
Adjustment value check sum error 
(PCU)
U2
91
Display
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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