Correct maintenance method of printer
First, check whether the printer is powered on. If the indicator light goes out, check whether the power cord and fuse are blown.
2. When the power indicator is normal, please check the print status indicator that shows communication data. Generally, yellow-green indicates normal, and flashing red indicates paper jam, no paper or lack of ink. The flashing of double lights indicates that the ink cartridge or print head can't be detected, which may be burnt out or poor contact, or the ink may flow out and get stuck, resulting in internal short circuit between the print head chip and the ink cartridge detection chip. The two lights flash alternately, indicating that the waste ink bin is full of waste ink, and the counter of the print head chip or the ink cartridge chip needs to be reset. The zero clearing method of Canon printer-press and hold the power switch, and then plug in the printer. When the power indicator light is on, press the paper key twice quickly with another finger, and then release the power switch at the same time to reset manually. Manual zero setting is generally not very thorough. If necessary, you can download dedicated or universal zeroing software online for zeroing.
3. If the two indicator lights are normal, but the printer can't print, check whether the printing task is a printing task by clicking "Print Output" at ordinary times, and check whether the computer reacts too slowly and the user prints too quickly, resulting in too many printing tasks and the printer can't respond, thus blocking the interruption and crashing.
Fourth, if you can print, but the printing effect is not good, check whether the ink cartridge is short of ink or whether the nozzle of the print head is blocked. Blurred handwriting or blank in the middle of printing is a problem of lack of ink, blocked print head or no calibration. Just add enough ink to clean or correct the print head. Printing discoloration and color cast are caused by insufficient ink in some ink cartridges, blockage of individual nozzles or mixing of different inks, which can be solved by adding ink correctly or replacing ink cartridges; If the handwriting is incomplete, only half or more strokes are drawn, or the printing line is broken, white bars are missing, and the omission is unclear, or even it can't be typed, it is a paper jam fault of the print head, which can be solved by properly cleaning or soaking the print head.
5. Printer cleaning method: Select Advanced Maintenance in the toolbar of the printer driver property program, and enter the print head cleaning function for automatic cleaning. This cleaning method usually takes effect after three times. If it still doesn't work after five times of cleaning, don't automatically clean and waste ink; At this point, the machine can be disassembled for manual cleaning. The method is to disassemble the print head, soak it in 80-90 degrees pure boiling water for half an hour or an hour, then wipe it clean with paper towels and put it back.
6. If there is a paper jam, please turn the mechanical gear by hand and gently pull out the paper. Then check whether the paper feeding system is composed of paper feeding sensors and related mechanical transmission devices, and pay attention to whether the pinion is damaged or the paper is improperly placed. Sometimes the paper jam is caused by too thin, too wet or static electricity; Sometimes paper jams are caused by abnormal operation of ink cartridges or print heads; Sometimes paper jams are caused by system poisoning or damage and driver errors; Sometimes the paper jam is caused by paper scraps and sundries blocking the paper feed bin; Sometimes the paper jam is caused by the longitudinal and transverse thickness adjusters of the paper, which is also called improper lever adjustment; Sometimes the paper jam is caused by insufficient power supply or unstable voltage of the driving circuit board. Therefore, the specific analysis of specific problems cannot be tinkered with blindly, nor can it be handled unilaterally.
Seven, if the printer does not respond, please check whether the printer driver is installed correctly. If installed correctly, check that the printer is pointing to the correct port. After checking the wiring and driver, make sure that the printer is in a "ready" working state and can print normally.
8. If all the above work has been checked and the printer still doesn't respond, check whether there is waste ink at the bottom that wets the circuit board, causing the power IC integrated circuit to be short-circuited, otherwise the print head will be seriously damaged and scrapped. In this case, a new or good print head should be replaced. The print head is out of control and automatically "hits the wall" as soon as it is turned on, which is caused by the wear or failure of the photosensitive belt behind the ink truck.
Printer maintenance skills
First, the printing effect is different from the preview.
Usually, this happens in a text editor, such as word or wps2000. When previewing, it was clearly in a neat format, but when printing, I found that some fonts overlapped. This situation is generally caused by improper settings when editing. The solution is to change the paper size, paper type and words per line in the "Page Properties" of the file, which can generally be solved.
Second, the printing handwriting is not clear.
This problem is very common in the usual use of printers. Generally speaking, this situation is mainly related to hardware failure. When you encounter this problem, you should generally pay attention to some key parts of the printer. Let's take the inkjet printer here as an example. When the print color is blurred and the font is unclear, we can lock the fault in the nozzle and automatically clean the print head first. If it fails, we can wipe it with soft paper with strong water absorption, close to the print head; If the above methods still can't be solved, you have to reinstall the printer driver.
Third, large files cannot be printed.
This situation is more common in laser printers. It may be normal when printing small files, but it will crash when printing large files. This problem is mainly a software failure. You can check the remaining space on the hard disk, delete some useless files, or inquire about the amount of printer memory, whether it can be expanded.
Four, choose the printer does not respond after printing.
Generally, when this happens, the system will prompt "Please check whether the printer is online and whether the cable connection is normal". The general reason may be that the printer power cord is not plugged in properly; The print cable is not connected correctly; Poor contact; Computer parallel port damage, etc. There are mainly the following solutions:
1. If it doesn't start normally, that is, the power light doesn't work, first check whether the power cord of the printer is connected correctly, plug it in again after shutdown, and try to solve it by changing a power socket.
2. If the printer can be started normally after pressing the printing power switch, enter the bios settings to check the parallel port settings. Ordinary printers use ecp mode, and some printers do not support ecp mode. At this time, you can use ecp+epp or "Normal" mode.
3. If the above two methods are ineffective, it is necessary to check the print line. First, turn off the computer, unplug both ends of the print cable, and then plug it in again. Be careful not to plug in the electricity. If the problem cannot be solved, please try another print cable or use other methods.
Verb (abbreviation of verb) is not completely printed.
If you encounter such a problem, it can definitely be said that it is caused by a software failure. You can change the print interface settings in windows95/98, and then select Start → Settings → Control Panel → System → Device Management → Ports → Printer Port → Driver Change → Show All Devices, and change the ecp print port to printer port and confirm.
Maintenance method of laser printer
1, the room temperature should be controlled at about 22℃, and the relative temperature should be 20% ~ 80%; Avoid direct sunlight and chemical corrosion.
2. The laser printer absorbs the charged toner on the photosensitive drum through photoelectric action according to the instructions issued by the computer, and then prints it on the printing paper from the photosensitive drum, heating the toner, so that the toner is dissolved in the paper fiber to complete the printing function. Therefore, the photosensitive drum plays an important role in the whole laser printing process, so the maintenance of the photosensitive drum is more important. When the photosensitive drum works, the relative humidity should be kept at 20%~80% and the temperature should be 10~32.5℃. Avoid direct sunlight and try to keep the temperature and humidity constant.
3. The optical box in the laser printer is the key part of the printer. If the optical element is dirty, the digital information transmitted by the computer cannot be accurately converted from photoelectric to electrostatic latent image. Digital information of characters and images cannot be correctly transmitted to the carrier. Therefore, the uncleanness of optical elements is the main factor affecting the quality of carriers.
The optical elements and positions in the box are all debugged and positioned with very precise special equipment, and cannot be adjusted without special equipment. Care should be taken to clean and maintain the laser beam detector, optical fiber head, focusing lens and hexagonal prism. When cleaning the above parts and components, only bamboo tweezers, cork pieces and wooden sticks can be used to avoid metal damage or scratches on optical components during cleaning. In cleaning optical components, it is best to "dry clean" the hexagonal prism, and other components can be "dry cleaned" or "washed". You can use anhydrous ethanol for water, wood or bamboo tools for cleaning, suede or medicinal absorbent cotton for cleaning, but it is best to dry clean, because "water-washed absorbent cotton" is easy to lose fiber and affect the optical effect.
4. The working process of laser printer is to dissolve toner into paper by photoelectric principle, so the paper used for laser printer must be dry and static-free, otherwise it is easy to get stuck or make the printed document black. Printing paper should be stored in an environment with the temperature of 17~23℃ and the relative humidity of 40%~50% to obtain the best printing effect.
5. If paper jam is found during printing, you can open the printer cover, take out the paper stuck in the printer, and then close the printer cover to eliminate the fault. If there are frequent failures, please clean the corona wire and paper feeding track of the printer with a dry cloth.
6. The laser printer will produce ozone during printing, and the ozone filter must be replaced every 50,000 copies printed. Although the ozone filter looks clean at this time, it can no longer filter ozone. When the laser printer is placed in a crowded environment, the indoor ventilation is poor, the printer exhaust port is facing the operator's face, and the ozone filter is used for too long, which will cause the ozone generated by the printer to be harmful to the human body. At this time, it is necessary to improve the working environment of the printer and replace the ozone filter in time.
7. Wipe off the scraps of paper and dust in the laser printer with a dry cloth, and clean the corona wire. Only in this way can we ensure the normal use of laser printers and extend their service life.
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