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[Office Partner Information Center] 1. Output full black paper may be the cause of failure:
(1) If the laser is definitely good, the charging electrode may be short-circuited to the grid;
(2) Scan drive circuit logic error;
(3) The toner cartridge assembly is poorly discharged;
(4) The signal connection is not connected.
2. Output full-width vertical black belt (line) may cause failure:
(1) The photosensitive drum scraper is damaged or the photosensitive drum is scratched on the scraper;
(2) Local damage of the magnetic roller scraper;
(3) The printer (generally guides the paper feeder channel) is contaminated with toner.
Third, the output of the horizontal irregular black belt (line) may be the cause of the failure:
(1) The photosensitive drum has poor contact with the electrode;
(2) The photosensitive drum blade has excessive shearing force;
(3) Jitter occurs when the main drum of the drum rotates;
(4) The drum is defective or incorrectly installed.
4. Output full blank paper may be the cause of failure:
(1) There is no toner in the toner cartridge;
(2) The laser mechanical shutter is not open;
(3) The laser beam detector is contaminated or damaged;
(4) The laser is damaged.
V. Output longitudinally regular leucorrhea (strip) possible failure reasons:
(1) When the toner is about to be used up, there is no toner in the part of the magnetic roller (generally in the middle part of the sample);
(2) The beam mirror is contaminated by dirt such as toner;
(3) The scanning optical path is blocked by foreign matter.
6. Output horizontal irregular white strips (bands) may cause failure:
(1) The charging electrode wire is contaminated or the charging roller contact is in poor contact;
(2) fatigue of the photoconductive layer on the surface of the photosensitive drum;
(3) The drum is poorly discharged.
Seven. Output graphics are pale. Possible causes of failure:
(1) The printing paper is damp;
(2) toner moisture or photosensitive drum assembly problems;
(3) The photosensitive drum is poorly discharged after exposure, and the surface potential is low;
(4) Underexposure;
(5) The magnetic roller has a low bias;
(6) The transfer voltage is low.
Eight. Output image is imaginary. Possible cause of failure:
(1) Using a printing paper that does not conform to the standard;
(2) The toner model does not match the machine type or the toner is damp;
(3) The photosensitive drum is damp;
(4) Some components in the scanning assembly are loose;
(5) The scanning motor is not running smoothly and there is jitter.
Nine. Output sample has bottom ash may be the cause of failure:
(1) the developing bias is too low;
(2) aging of the magnetic roller scraper;
(3) The developing magnetic roller is too close to the photosensitive drum;
Ten. The output sample image is different from left to right. Possible causes of failure:
(1) The toner will run out;
(2) contamination of the charging electrode wire or the charging roller;
(3) contamination of the transfer wire or transfer roller;
(4) The mirror coating is partially peeled off.
XI. The appearance of the upper and lower shallow phenomenon in the output proof image may cause the fault:
(1) transfer electrode wire contamination;
(2) The toner model does not correspond.
Twelve. The output sample image has regular and irregular depths. Possible causes of failure:
(1) Local fatigue of the photosensitive drum;
(2) Poor contact between charging and transfer roller electrodes.
13. The appearance of regular white spots in the longitudinal direction of the sample may be the cause of the malfunction:
(1) Partial oil stain on the photosensitive drum;
(2) The charging roller is partially damaged;
(3) The surface of the fixing roller is partially damaged.
14. The appearance of regular black spots (points) in the longitudinal direction of the sample may be the cause of the malfunction:
(1) The photoconductor surface photoconductor is broken down or has a defect;
(2) The ionizing film of the charging roller is damaged;
(3) The fluorine film on the surface of the fixing roller has a defect (the defect color is slightly lighter).
Fifteen. Irregular black spots appear on the sample sheet. Possible causes of failure:
(1) There are impurities in the toner;
(2) Deformation or damage of the waste powder white backing piece in the toner cartridge assembly;
(3) Toner white powder leakage.
16. The page appears in the vertical or horizontal direction of the irregular black line may be the cause of the failure:
(1) The photoconductive layer on the surface of the photosensitive drum is scratched;
(2) The surface of the fixing roller is scratched;
(3) The drum is shaken during operation.
Seventeen. The output sample image has a regular depth of up and down. Possible causes of failure:
(1) Local fatigue of the photosensitive drum;
(2) Poor contact between charging and transfer roller electrodes.
18. The appearance of regular white spots in the longitudinal direction of the sample may be the cause of the malfunction:
(1) Partial oil stain on the photosensitive drum;
(2) The charging roller is partially damaged;
(3) The surface of the fixing roller is partially damaged.
19. The appearance of regular black spots (points) in the longitudinal direction of the sample may be the cause of the malfunction:
(1) The photoconductor surface photoconductor is broken down or has a defect;
(2) The ionizing film of the charging roller is damaged;
(3) The fluorine film on the surface of the fixing roller has a defect (the defect color is slightly lighter).
Twenty. Page image information loss may be the cause of the failure:
(1) The image resolution setting is too high, and the memory is insufficient;
(2) The print mode set by the driver is incorrect;
(3) The image size and the printed page are set incorrectly;
(4) Information transmission error.
Twenty-one. Page vertical character compression may be the cause of the failure:
(1) The transmission gear on the photosensitive drum is loose;
(2) The proportion of the transmission gear is incorrect;
(3) The main motor speed control fails.
Twenty-two. The horizontal offset of the page image may be the cause of the failure:
(1) The printed content of the page is too complicated, and the printer has insufficient memory;
(2) The page size exceeds the size set by the printer.
Twenty-three. Page character deformation distortion may be the cause of the failure:
(1) The axial movement of the photosensitive drum in the toner cartridge assembly;
(2) The lens inside the scanning assembly is loose;
(3) Poor power dissipation before fixing;
(4) The crystal oscillator in the scan control circuit is damaged.
Twenty-four. The back of the paper may be contaminated.
(1) The printer paper path is contaminated by toner;
(2) In the fixing unit, the pressure rubber roller is contaminated.
Twenty-five. The printed characters are hollow. Possible causes of failure:
(1) The printed materials used do not meet the requirements;
(2) The toner model is wrong.
(3) The fixing roller temperature is too high.
Twenty-six. The page characters are not fixed firmly, and the surface may be rough.
(1) The fixing temperature is low;
(2) insufficient fixing roller pressure;
(3) The toner used does not correspond to the model.
Twenty-seven. The left or right side of the page is missing. Possible causes of failure:
(1) The light path is blocked;
(2) Ceramic heating model, the fixing sleeve is broken and displaced.
Twenty-eight. The secondary re-image appears in the vertical direction of the page.
(1) Photosensitive drum cleaning blade aging;
(2) The surface temperature of the hot roll is low or the pressure of the rubber roll is insufficient;
(3) The fluoro film on the surface of the heat roller is worn, and a lot of toner melt adheres to the surface.
Twenty-nine. Irregular black lines appear in the vertical or horizontal direction of the page. Possible causes of failure:
(1) The photoconductive layer on the surface of the photosensitive drum is scratched;
(2) The surface of the fixing roller is scratched;
(3) The drum is shaken during operation.
Thirty. Irregular black spots appear on the sample sheet. Possible causes of failure:
(1) There are impurities in the toner;
(2) Deformation or damage of the waste powder white backing piece in the toner cartridge assembly;
(3) Toner white powder leakage.
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