4. Trouble codes

A. Trouble codes list
Main code Sub code Trouble content
SHARP TROUBLE & ERROR CODES AL-1340, AL-1451, AL-1551

Detail of trouble

Duplex model memory setup error, memory not-detected error HSYNC not detected. CCD white level trouble CCD black level trouble Shading trouble (White correction) ASIC connection trouble Copy lamp disconnection trouble Laser output trouble Feeding is not completed within the specified time after starting feeding. Return is not completed within the specified time.
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 Copy lamp lighting trouble (Copy lamp, invertor PWB) CCD drive circuit (CCD PWB, ASIC, harness) trouble Dirt on white plate for scanning white level Improper connection between CPU and ASIC (pattern cut, improper connection of lead pin) Copy lamp or copy lamp drive circuit (invertor PWB) trouble Copy lamp disconnection LSU (laser diode, reception element, APC circuit) trouble LSU drive circuit (ASIC) trouble 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 OFF. Or when the mirror base is fed for the specified time (about 6 sec) after start of copy return, the mirror home position sensor (MHPS) does not turn OFF. 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

16 L1 00

L4 L6 H2 H3 H4 U2
Main motor lock Polygon motor lock
Thermistor open detection The fusing thermistor is open. Heat roller abnormally high The fusing temperature rises above 240C. temperature Heat roller abnormally low The fusing temperature does not reach 185C within 27 sec of turning on the power, or the fusing temperature temperature keeps at 140C. Counter sum check error EEPROM serial communication error When the counter check sum value stored in the EEPROM is abnormal. When a communication trouble occurs with the EEPROM.
AL-1551 SIMULATION, TROUBLE CODES 10-14

4. Trouble codes

A. Trouble codes list
Main Sub Trouble content code code EDuplex model memory setup error, memory no error detected 02 HSYNC not detected. F5 H2 H3 H4 LCCD black level trouble CCD white level trouble Shading trouble (White correction) Laser output trouble
SHARP TROUBLE & ERROR CODES AL-1215, AL-1530CS, AL-1540CS, AL-1551CS
Detail of trouble 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

L4 L6 U2

LSU (laser diode, reception element, APC circuit) trouble LSU drive circuit (ASIC) trouble Copy lamp disconnection Copy lamp or copy lamp drive circuit (inverter PWB) trouble trouble Copy lamp disconnection Thermistor open detection The fusing thermistor is open. Heat roller abnormally high The fusing temperature rises above 240C. temperature Heat roller abnormally low The fusing temperature does not reach 185C within 27 sec of turning on the power, or the fusing temperature temperature keeps at 140C. Feeding is not completed The white area and the black marking on the shading plate are used to obtain the difference in the CCD within the specified time level values for judgment of lock. When the difference in the levels of which and black is small, it is judged after starting feeding. that the black mark could not be scanned by lock and the trouble code L1 is displayed. (The scan head locking switch is locked) Return is not completed When the mirror base is returned for the specified time (6 sec) in mirror initializing after turning on the within the specified time. 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. Main motor lock When the main motor encoder pulse is not detected for 100 msec. 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 Counter sum check error When the counter check sum value stored in the EEPROM is abnormal. EEPROM serial When a communication trouble occurs with the EEPROM. communication error
AL-1551CS SIMULATION, TROUBLE CODES 10 - 15