Inkjet printer Part of the color of how to do

The exposure lamp is damaged. First observe whether the exposure lamp is luminous, do not light to check the lamp foot contact is good. Is the exposure of the lamp tube damage, disconnection or lamp feet and lampholders contact poor and other reasons.

The exposure lamp controls the circuit fault. Exposure lamp control circuit failure, check the voltage is normal everywhere, no voltage should be checked to control the exposure lamp circuit is faulty, if necessary, replace the circuit board.

Optical system failure. The optical system of the copier is obscured by foreign objects so that the light emitted by the exposure lamp cannot reach the surface of the photoconductor drum. Remove foreign objects. The reflector is too dirty or damaged, and the reflective angle changes, the light is too high, can not make the photosensitive drum exposure, clean or replace the reflector, adjust the reflective angle.

Faulty charge parts. Two times the fault of the charging component (NP copy method only), check whether the insulating end of the charging electrode is discharged, the electrode is connected with the metal shielding cover (there is scorch mark), causing the leakage.