Third, check the other cases

Power plug is not inserted securely , the power switch is damaged or overcurrent protection and disconnect switch failure , without reset.

47 , does not stop the copier repair preheating step

After boot, preheat signal on the control panel does not disappear for a long time , so that the machine can not be copied.

First, check the thermistor

Fixing temperature detection thermistor ( thermal sensors ) installed in areas away from the fixing heater roller close ( about 1 mm ) , the preheat indicator light turns off , you can copy lights when changing or disconnecting the thermistor resistance , then not correctly detecting the temperature of the fuser roller , then fixing heater lamps are always lit, preheat temperature reached nor extinguished. Further , the thermal resistance and the surface opposite to the heating roller surface is a thermal oil, dust, etc. on sticks , or the surface of the thermistor from the heating roller is too long , but also make the preheating time is prolonged or undetectable fixing temperature . Clean with alcohol should be removed when installing adjusting the distance between the heating roller.

Second, check the other faults

Machines due to paper jams, toner runs out, the scanning component malfunction or other reasons and did not rule out faulty signals , the machine can not continue to use , the fuser heating circuit does not work , must be ruled out before preheating after these failures .

Third, check the fuser heater

Following the opening fixing heater lamp filament , no fever light, or heat lamp is bad. Needs to be repaired or replaced.

48 , the exposure factors.

Cause and Remedy :

Exposure is an important process for forming an electrostatic latent image , a copy will be directly related to the quality of the exposure of many factors in the process of using the copier main following points:

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