Trouble Codes - Sharp AR-122E Service Manual

4. Trouble codes

A. Trouble codes list
Main Sub
Trouble content
code code
E7 01 Duplex model memory
setup error, memory not-
detected error
02 HSYNC not detected.
10 CCD black level trouble
11 CCD white level trouble
12 Shading trouble
(White correction)
16 Laser output trouble
F5 02 Copy lamp disconnection
trouble
H2 00 Thermistor open detection The fusing thermistor is open.
H3 00 Heat roller abnormally high
temperature
H4 00 Heat roller abnormally low
temperature
L1 00 Feeding is not completed
within the specified time
after starting feeding.
(The scan head locking
switch is locked)
L3 00 Return is not completed
within the specified time.
L4 01 Main motor lock
L6 10 Polygon motor lock
U2 01 Counter sum check error
04 EEPROM serial
communication 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.
LSU (laser diode, reception element, APC circuit) trouble
LSU drive circuit (ASIC) trouble
CCD drive circuit (CCD PWB, ASIC, harness) trouble
CCD drive circuit (CCD PWB, ASIC harness) trouble
Copy lamp lighting trouble (Copy lamp, inverter PWB)
Dirt on white plate for scanning white level
LSU (laser diode, reception element, APC circuit) trouble
LSU drive circuit (ASIC) trouble
Copy lamp or copy lamp drive circuit (inverter PWB) trouble
Copy lamp disconnection
The fusing temperature rises above 240° C.
The fusing temperature does not reach 185° C within 27 sec of turning on the power, or the fusing
temperature keeps at 140° C.
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.
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.
When the main motor encoder pulse is not detected for 100 msec.
The lock signal (specified rpm signal) does not return within a certain time (about 20 sec) from starting the
polygon motor rotation
When the counter check sum value stored in the EEPROM is abnormal.
When a communication trouble occurs with the EEPROM.
AR-122E/152E/153E/157E SIMULATION, TROUBLE CODES 10 - 17
Detail of trouble