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Remove the drum core, using a flathead screwdriver to gently upward to pick out a charging roll it gently out. Small knowledge: the role of the charging roller to charge in the cartridge when working on the drum core. The charge roller surface is a layer of conductive rubber, so that a uniform charge on the surface of the drum core. We can see that there is a pin below the charging roller, which is the key point out the top of the iron pin, using a slotted screwdriver. Tip: Other methods into small iron pin on the outside inwards, so that can also be damage, but very easy on the cartridge, use the figure of the method can easily remove the iron pin, no damage to the cartridge. Top out small iron pin with diagonal pliers gently pull.  5mw green laser has the strict parameters and high performances.
Unscrew the cartridge the other end of the screw with a Phillips screwdriver. Unscrew the screws after the imaging position and the waste bunker separated. Using a flathead screwdriver out small iron pin cartridge to the other end of the charging roller following the top of the method in Figure 5. Just top out small iron pin with diagonal pliers to pull out. Use a Phillips screwdriver, unscrew the two screws inside the circle in the figure within the drum core, remove the waste toner box scraper. Tip: when the cartridges in the work will not be on the drum core all the toner transferred onto the paper above, some residual toner, so they need the scraper to scrape the toner left behind, otherwise, would times print to the next piece of paper, causing the ghosting. Therefore, the parameter, description and revise in the drawing of 5mw green laser should be as exact and accurate as possible.
Residual toner in the waste bunker down clean, with a bag loaded up, to prevent contamination. Tip: waste bunker Feifen must have to deal with clean, or will produce powder leakage, Feifen the friction Guxin will reduce the life of the drum core. With a clean soft cloth to clean the charge roller. Tip: charging roller can not use alcohol to clean the surface with a layer of conductive rubber, alcohol has a corrosive effect. Clean the charge roller, charge roller and drum core of the installation, the scratches can also be replaced for the drum core. Back to the part of developing position, remove the imaging position on the magnetic roller. Small knowledge: the role of the magnetic roller put the toner inside the toner adsorbed to himself, to form a thin circle of toner. The drawing of cheap Laser Pointers should be drafted by the experienced and profession personnel.
In order to prevent the toner and the toner in the increase is not compatible with cloth to wipe off the toner on the magnetic roller. Plus powder quartet built with a piece of paper notch shape, ease of adding powder to the bunker. Tip: add the powder around the bottle moves back and forth, so that the toner evenly join the bunker. Also remove the cover from the next to the powder outlet plus powder, so that is convenient, but the lid close it again after removing the sealing performance deterioration will be caused by leaking powder. Add toner after, install the gear cover, the magnetic roller close attention to the gears do not lose or reverse mounted. For final assembly, close the cleaned waste bunker and good toner imaging positions. Tip: Note about both sides of the spring is not lost, to be installed in place. He is specialize in the laser technology of 5mw green laser.
Find out the last to pull out in front of two small iron pin into the small iron pin location map, maintain and plastic mouth level to the end of the entire powder process. Clean up printer fault. Clear the jam. During a print job, paper or other print media can become jammed in the printer. Possible reasons are: the paper input tray is loaded improperly or too full. Tray 2 was removed in the process of print job. Open the top cover during a print job. The paper output area to excessive accumulation or blockage of the output area. The paper used is not in line with hp specifications. Solution. Open the top cover. Toward the imaging drum away from the direction to promote, and then from the printer. The personnel are good at other parameters and performances of 5mw green laser.