AR-122E (serv.man9). Sect 10. Simulation Trouble Codes - Sharp Copying Equipment Service Manual (repair manual). Page 17

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AR-122E/152E/153E/157E  SIMULATION, TROUBLE CODES  10 - 17
4. Trouble codes
A. Trouble codes list
Main 
code
Sub 
code
Trouble content
Detail of trouble
E7
01
Duplex model memory 
setup error, memory not-
detected error
The memory is not set properly or the memory capacity is not set to the duplex setup (6M).
Cancel method: Set SIM 26-39 code number to 2.
02
HSYNC not detected.
LSU (laser diode, reception element, APC circuit) trouble
LSU drive circuit (ASIC) trouble
10
CCD black level trouble
CCD drive circuit (CCD PWB, ASIC, harness) trouble
11
CCD white level trouble
CCD drive circuit (CCD PWB, ASIC harness) trouble
Copy lamp lighting trouble (Copy lamp, inverter PWB)
12
Shading trouble 
(White correction)
Dirt on white plate for scanning white level
16
Laser output trouble
LSU (laser diode, reception element, APC circuit) trouble
LSU drive circuit (ASIC) trouble
F5
02
Copy lamp disconnection 
trouble
Copy lamp or copy lamp drive circuit (inverter PWB) trouble
Copy lamp disconnection
H2 
00
Thermistor open detection The fusing thermistor is open.
H3 
00
Heat roller abnormally high 
temperature
The fusing temperature rises above 240° C.
H4 
00
Heat roller abnormally low 
temperature
The fusing temperature does not reach 185° C within 27 sec of turning on the power, or the fusing 
temperature keeps at 140° C.
L1 
00
Feeding is not completed 
within the specified time 
after starting feeding. 
(The scan head locking 
switch is locked)
The white area and the black marking on the shading plate are used to obtain the difference in the CCD 
level values for judgment of lock. When the difference in the levels of which and black is small, it is judged 
that the black mark could not be scanned by lock and the trouble code “L1” is displayed.
L3 
00
Return is not completed 
within the specified time.
When the mirror base is returned for the specified time (6 sec) in mirror initializing after turning on the 
power, the mirror home position sensor (MHPS) does not turn ON. Or when the mirror base is returned for 
the specified time (about 6 sec) after start of copy return, the mirror home position sensor (MHPS) does not 
turn ON.
L4 
01
Main motor lock
When the main motor encoder pulse is not detected for 100 msec.
L6 
10
Polygon motor lock
The lock signal (specified rpm signal) does not return within a certain time (about 20 sec) from starting the 
polygon motor rotation
U2 
01
Counter sum check error
04
EEPROM serial 
communication error
When a communication trouble occurs with the EEPROM.
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