Description: Main motor error • The machine does not detect a main motor lock signal within 2 seconds after the main motor started to rotate. • The machine does not release a main motor lock signal within 2 seconds after the main motor switched off. • The machine detects a main motor lock signal every 100 msec. for seven times consecutively, after the main motor started to rotate stably.
Causes: • Torque overload • Defective main motor • Disconnected or defective motor harness
Remedy: 1. Turn the power OFF and ON. 2. Replace the main motor if the torque load is normal. 3. Clean/replace the AIO and/or fusing unit if the torque load is abnormal. 4. Replace the motor harness.
Code: SC530
Description: Cooling fan error The FAN lock signal – High for 10 seconds, after the cooling fan motor started to rotate.
Causes: Disconnected or defective fan motor harness
Remedy: 1. Turn the power OFF and ON. 2. Replace the cooling fan. 3. Replace the fan motor harness.
Code: SC541
Description: Fusing thermistor error The thermistor output is less than 0°C for 5 seconds after the fusing lamp turns ON.
Causes: Disconnected or defective fusing thermistor
Remedy: 1. Reset the SC. 2. Replace the fusing unit. 3. Replace the drawer harness. 4. Replace the PSU.
Code: SC542-01
Description: Fuser reload error The fusing temperature rises 6°C or less in 1.5 seconds; and this continues 5 times consecutively.
Causes: • Defective or deformed thermistor • Incorrect power supply input at the main power socket
Remedy: 1. Reset the SC. 2. Replace the fusing unit. 3. Replace the drawer harness. 4. Replace the PSU.
Code: SC542-02
Description: Fuser reload error The fusing temperature has not reached 45°C within 9 seconds (after the fusing lamp comes ON while the machine is warming-up).
Causes: • Defective or deformed thermistor • Incorrect power supply input at the main power socket
Remedy: 1. Reset the SC. 2. Replace the fusing unit. 3. Replace the drawer harness. 4. Replace the PSU.
Code: SC542-03
Description: Fuser reload error The fusing unit does not attain reload temperature within a predetermined time after the fusing temperature control starts.
Causes: • Defective fusing lamp • The overheat protection mechanism started working
Remedy: 1. Reset the SC. 2. Replace the fusing unit. 3. Replace the drawer harness. 4. Replace the PSU.