理光4085_4065复印机故障排除两例（Two cases of troubleshooting Ricoh 4085_4065 copier）.docVIP

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理光4085_4065复印机故障排除两例（Two cases of troubleshooting Ricoh 4085_4065 copier）.doc

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理光4085_4065复印机故障排除两例（Two cases of troubleshooting Ricoh 4085_4065 copier）

理光4085_4065复印机故障排除两例（Two cases of troubleshooting Ricoh 4085_4065 copier） Two cases of troubleshooting Ricoh 4085/4065 copier Sichuan is a river 1993-10-22 Cause of failure: the optical system is loose, causing it to shift during copying. Principle analysis: in the process of copying, an original image by the optical components (mirror and lens) after the reflection light into the surface layer of toner like complete exposure, exposure light from the 85V/250W light is reflected and focused, quadrochromatic image reflected in the first mirror, then the light which is reflected to the second mirror and third mirrors and through the lens. After passing through the lens, the light is reflected by the fourth mirror and then passes through the blocking glass. Finally, the light from the original image is illuminated to form a latent image on the surface of the cartridge. If any one of the mirrors is loose, the reflected light will make changes, the focus in the objective reflection on the surface of the toner displacement caused by latent toner surface like line is not clear, so as to make the move to copy the image or text appears fuzzy shape. Troubleshooting: check them in the following order, one by one. First, open the power supply end of the heat treatment of copier, copier, open the front door cover; second, with hard objects from the top of the door switch, to ensure that the copier is in a standby state; third, the developer is pulled by hand and placed smoothly; fourth, according to a copy of the key and carefully observe the light irradiation of the toner cartridge. Observation: in the drum side, the focus of light scattered, inverted quadrochromatic, and then observe the other side of the same situation (please note that the phenomenon is observed when the machine is running). According to the principle analysis, optical device loosening probability; fifth, carefully remove the platen glass, check each lens is loose, after inspection without loose sense; and th