Comprehensive maintenance of the hottest laser pri

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Comprehensive maintenance of laser printer

1. comprehensive maintenance of laser printer refers to disassembling the printer for comprehensive inspection and cleaning. All mechanical operating parts shall be cleaned and the lubricating grease shall be replaced again. The disassembly steps shall be in sequence and shall not be confused. The removed screws shall not be placed randomly, let alone mixed. After cleaning, install according to the original sequence. There shall be no missing parts

2. the vulnerable parts of the printer shall be replaced, and the main motor gear, paper suction cam, transfer roller gear and fusing roller gear shall be mainly inspected. Spacer sleeves at both ends of the fusing roller, paper take-up wheels and alignment roller gears

3. when pulling and inserting the circuit board plug, pay attention to pulling and inserting gently with even force. It is forbidden to pull and insert forcibly to avoid disconnecting the wiring; Remember the color and location of the plug. If necessary, mark it with adhesive tape. When installing, seat it according to the mark. Never plug in the wrong one, otherwise it may cause failure, even fatal failure

4. when cleaning the dirt on the circuit board, first remove the dust with a brush, then suck it with a vacuum cleaner, then remove the residual dirt on the circuit board with a clean cotton dipped in a small amount of alcohol, and finally dry it with an electric hair dryer. Do not use sharp tools to forcibly scrape dirt on the circuit board or components to avoid damaging components, and do not use corrosive solutions to clean

5. when disassembling the laser scanning assembly, pay attention to make a mark, otherwise the diagonal distortion of the output text may be caused after restoration, which is troublesome to correct. When cleaning the collimator, it is better to use the special cloth (chamois) for wiping the lens and the reflector, and do not use the materials (cotton, etc.) that have shed wool. Once there is powder, wool, etc. left on the mirror, there will be inaccurate printing; Moreover, sharp utensils should not be used to clean and print the catalogue of technologies and products encouraged to be used in the building materials industry (2018 (2) 020) to wash various lenses or mirrors. The reflector cannot use gasoline. Clean with solvent such as ethane, otherwise it is easy to cause the coating protective layer of the mirror to fall off, affecting the reflection ability

6. the transfer roller can not use water to maintain the universal material testing machine? The above content is a detailed introduction to this problem. For washing or solvent scrubbing, first gently tap the transfer roller with a flat wooden board, and then repeatedly suck it with a vacuum cleaner after the dirt is soft. Finally, apply a small amount of conductive grease on one end of the conductive electrode and put it in place. It must not be replaced by ordinary grease

7. pay attention to the sequence when disassembling the fusing device, and be careful not to smash the heating lamp (glass products). After taking out the heating roller, first apply a small amount of alcohol or MEK solution to the surface of the heating roller from the chemical business department, and after about 10 minutes, wipe off the toner adhered to the surface of the heating roller with a soft cloth. The pressure rubber roller can also be cleaned by the same method. Do not try to blunt the separation plate or separation claw. Although it is beneficial to protect the fluorine film (polytetrafluoroethylene) on the surface of the heating roller, it is easy to cause poor paper separation and paper jam. The dirt on the surface of thermistor and thermal protection switch shall be carefully removed. If the surface is damaged, it shall be replaced in time. Generally, the main causes of heating roller wear are thermistor and thermal protection switch. Therefore, the above components shall be replaced together with the replacement of heating roller

8. the maintenance of the mechanical transmission device is more intuitive. Check all gears for tooth loss, especially the gears of the fusing device, which work under the condition of high temperature and poor lubrication and are damaged quickly. If the fusing gear is out of gear or severely worn, it will cause asynchronous operation and irregular paper jam. The maintenance of the laser printer is a time-consuming work. Do not be impatient. Be patient and careful. Otherwise, unexpected failures will occur after the maintenance and recovery. It is very necessary to make all preparations before work. If you are maintaining some unfamiliar models, you must make all kinds of marks. It is best to concentrate on completing them in a short time to avoid unnecessary trouble caused by forgetting the location of components and missing the schematic diagram

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