First, the printer output blank paper
For the dot matrix printer, the cause of the blank of the printing paper is mostly due to ink ribbon drying, ribbon breaking, print head damage, etc. The ribbon should be replaced or the print head should be repaired. For inkjet printers, the majority of defects that cause blank printing are Because the nozzle is clogged, the ink cartridge is not ink, etc., the nozzle should be cleaned or replaced. If the continuous ink supply is modified, the vent hole of the external ink cartridge may not be open, and vent holes should be left on the external ink cartridge.
For a laser printer, the cause of this type of malfunction may be that the developing roller has not absorbed the toner (the developing roller DC bias is not applied), or the photosensitive drum is not grounded, so that the negative charge cannot be released to the ground, and the laser beam cannot Works on the photoconductor drum.
In addition, if the drum of the laser printer does not rotate, no image will be generated and transmitted to the paper. Disconnect the printer, remove the toner cartridge, open the notch on the lid, and mark the non-photosensitive part of the drum and reload it. After booting for a while, and then checking out if the check mark has moved, you can judge whether the photoconductor drum is working properly. If the toner cannot be supplied normally or the laser beam is blocked, blank paper will also be printed. Therefore, check that the toner is used up, that the cartridge is properly loaded in the printer, that the sealing tape has been removed, or that there is no obstructer on the laser light path. It should be noted that the power must be turned off during the inspection because the laser beam may damage the operator's eyes.
Second, print paper output black
For the dot matrix printer, the cause of this failure is ribbon stripping, excess ink on the ribbon, dirty print head, poor ribbon quality, and too close position of the push rod. During the inspection, the position of the push rod should be adjusted first. If the fault cannot be eliminated, replace the ribbon, clean the print head, and generally correct the fault.
For inkjet printers, it is important to check whether the nozzle is damaged, whether the ink tube is broken, the type of the ink is normal, etc. For the laser printer, it is mostly due to the failure of the corona discharge wire or the failure of the control circuit, which causes the laser to emit continuously, resulting in printing. The output is completely black. Therefore, it should be checked whether the corona discharge wire has been disconnected or the corona high pressure exists, and whether the beam detector in the laser beam path is working properly.
Third, the print character is incomplete or the character is not clear
For inkjet printers, there may be two reasons: the ink cartridge is completely ink, the printer is not used for a long time, or it is exposed to direct sunlight, causing nozzle clogging. The solution is to replace the ink cartridge with new ink. If the cartridge is not used up, it can be concluded that the nozzle is blocked: remove the ink cartridge (for the ink cartridge nozzle is not an integrated printer, you need to remove the nozzle), soak the nozzle in warm water for a while, Note that you must not immerse the circuit board in water, otherwise the consequences can be disastrous.
For the dot matrix printer, there may be several reasons: the ribbon is used for a long time; the print head has not been cleaned for a long time, and there is too much dirt; the print head has a broken needle; the print head drive circuit is defective. The solution is to adjust the distance between the print head and the print roller first. The fault cannot be eliminated. You can change the ribbon. If it is not enough, you need to clean the print head. The method is: Remove the two fixing screws on the print head and take down the print head. Use a needle or a small hook to remove dirt from the front and back of the print head. Usually the ribbon fibers accumulated for a long time are printed. The back of the head can see a few drops of indicator oil at the place where the needle is seen, to remove some of the dirt, do not load the ribbon with blank sheets of paper, and then reload the ribbon so that the problem can be basically solved if it is a print head break. Needle or drive circuit problem, you can only replace the print pin or drive tube.
Fourth, print writing is light
For the dot matrix printer, most of the causes of this type of failure are dry ink ribbon cartridges, broken needles on the print head, and too far positions of the push rods. This can be solved by replacing the ribbon and adjusting the push rod; for inkjet printers, Blockage of the nozzles, overdrying of the ink, incorrect ink type, air in the ink supply tube, and excessive printer operating temperatures can cause this malfunction, and should be used to detect and repair nozzles, ink cartridges, etc.
For laser printers, when the toner in the toner cartridge is low, the development voltage of the developing roller is low, and the toner sensation is poor, the printed writing may also be too light. At this point, remove the toner cartridge and gently shake it. If the print effect does not improve, replace the toner cartridge or adjust the set of light-receiving switches under the printer toner cartridge to match the toner's photosensitivity.
Fifth, the printed side is clear and the other side is not clear
This phenomenon usually occurs on the dot matrix printer. Inkjet printers may also appear, but the probability is small. The main reason is that the print head guide and the print roller are not parallel, resulting in the distance between the two is far. The solution is to adjust the distance between the print head guide and the print roller so that they are parallel.
Specifically, loosen the adjustment tabs on both sides of the printhead guide rail, turn the adjustment tab counterclockwise to reduce the gap, and finally adjust the printhead guide rail and the print roller in parallel to solve the problem. However, pay attention to adjust the direction of the adjustment, you can gradually adjust, print more than a few times.
Six, repetitive smudges appear on the printing paper
Repeatedly appearing faults in the dot matrix printer are mostly caused by ribbon removal or excess ink. Replace the ribbon cartridge to eliminate it.
The repetitive appearance of ink-jet printers is caused by ink leakage from ink tanks or ink tubes. When the performance of the nozzles is poor, the ejected ink is not properly disconnected from the remaining ink and is in an equilibrium state. Ink leakage may also occur.
The laser printer has a certain regularity in this phenomenon. As a piece of paper passes through the printer, the 12 rollers in the machine turn more than one revolution, and the largest photosensitive drum rotates 2 to 3 turns. The feed roller may turn Ten laps, when there are equally spaced stains on the paper, may be caused by dirty or damaged rolls.
Seventh, the print head is blocked, stop and scream or vibrate in the same place
This is mainly due to the fact that the print head guide will become dry when it slides for a long time, and the print head will be obstructed when it moves. To a certain extent, printing will stop. If it is not processed in time, the drive circuit may be burned in severe cases. The solution is to apply a few drops of oil on the print rails and move the print head back and forth to evenly distribute it. After restarting, if there is any obstruction, the driver circuit may be burned out and you need to get it to the maintenance department.
Eight, the printer does not print
There are many reasons why printers do not print. There are printers and computers. The following are introduced separately:
1. Check if the printer is online. On most printers, there is a light next to the “OnLine†button that indicates the online status. Under normal circumstances, the online light should be on. If this indicator is off or blinking, the connection is abnormal. Check whether the printer power is on, whether the printer power switch is on, and whether the printer cable is properly connected. If the online indicator is normal, turn the printer off and on again to see if the print test page is normal.
2. Check if the printer has been set as the default printer. Click Start/Settings/Printer to check if there is a black hook on the currently used printer icon and then set the printer as the default printer. If there are no printers used in the Printers window, click the Add Printer icon and follow the prompts to install.
3, check whether the current printer has been set to suspend printing by right-clicking the printer icon in the Printers window and checking the "Pause Print" in the drop-down menu that appears. If there is a small hook on the option, if " Pause printing" Please cancel this option.
4. Just type in some text in Notepad and click Print on the File menu. If you can print a test document, then you have a problem with the print program. Check whether the correct printer is selected for WPS, CCED, Word, or other applications. If the application is a print file, check the print output generated by the application. is it right or not.
5, check the computer's hard disk free space is too small. If the free space of the hard disk is less than 10MB, it cannot be printed. Check the method is to right-click on the hard disk icon of "Install Windows" in "My Computer", select "Properties", check the hard disk space in the "General" tab, if the hard disk If the remaining space is less than 10MB, you must clear the Recycle Bin and delete the temporary files, expired files, or files that are no longer in use on the hard disk to free up more space.
6, check the printer driver is appropriate and print configuration is correct. In the "Printer Properties" window "Details" option check the following: In the "Print to the following port" selection box, check the printer port settings are correct, the most commonly used port is "LPT1 (printer port)", but some The printer requires the use of other ports; if you cannot print large files, you should focus on checking the “Timeout Settings†values ​​in the “Timeout Settings†section. This option is valid only for printers that are directly connected to the computer, but not when using network printers.
7, check the computer's BIOS settings in the printer port is open. The port used by the printer in the BIOS should be set to "Enable". Some printers do not support the print port signal of the ECP type. The print port should be set to the "Normal, ECP+EPP" mode.
8, check the computer for viruses, if necessary, antivirus software for antivirus.
9. Check if the printer driver is damaged. You can right-click the printer icon, select Delete, and then double-click Add Printer to reinstall the printer driver.
10. There is no paper or paper jam in the printer's input tray, and the printer's toner cartridge, ribbon, or toner cartridge is valid. If it is not valid, it cannot be printed.
Nine, the printer jams or can not move paper
The most common problem with the printer is a paper jam. When such a fault occurs, the indicator on the operation panel will light up and send an alarm signal to the host. There are many reasons for this failure. For example, there are debris in the paper output path, the rotation of components such as the paper feed roller fails, the paper tray does not feed paper, and the sensor malfunctions. It is very simple to eliminate such failures by simply opening the cover. Remove the jammed paper, but note that the paper must be pulled in the direction of the paper feed. Never turn any knob in the opposite direction.
If paper jams occur frequently, check the paper feed path and remove debris from the output path. The front edge of the paper is just above the metal plate. Check if the rollers are worn or the springs are loose and the pressure is not enough, ie the paper cannot be fed into the machine. When the paper roll is worn out and cannot be replaced at one time, the rubber band can be used for emergency treatment. After winding the rubber band, the friction force of the paper is increased and the paper feeding can be restored to normal. In addition, the paper loading tray is not installed properly, and the paper quality is not good (too thin, too thick, and damp), which may also cause a paper jam or failure to pick up the paper.
Ten, print messy characters
Whether it is a stylus printer, inkjet printer or laser printer print garbled phenomenon, mostly due to damage to the print interface circuit or damage to the host microcontroller, but the actual repair found that the printer interface circuit failure is more common, due to the interface circuit The micro power supply is used. Once the interface is charged and plugged to generate high-voltage static electricity instantaneously, it is easy to break through the interface chip. Generally, simply replace the interface chip to eliminate such faults. In addition, this phenomenon may also occur if the fonts have not been correctly loaded into the printer.
For the dot matrix printer, the cause of the blank of the printing paper is mostly due to ink ribbon drying, ribbon breaking, print head damage, etc. The ribbon should be replaced or the print head should be repaired. For inkjet printers, the majority of defects that cause blank printing are Because the nozzle is clogged, the ink cartridge is not ink, etc., the nozzle should be cleaned or replaced. If the continuous ink supply is modified, the vent hole of the external ink cartridge may not be open, and vent holes should be left on the external ink cartridge.
For a laser printer, the cause of this type of malfunction may be that the developing roller has not absorbed the toner (the developing roller DC bias is not applied), or the photosensitive drum is not grounded, so that the negative charge cannot be released to the ground, and the laser beam cannot Works on the photoconductor drum.
In addition, if the drum of the laser printer does not rotate, no image will be generated and transmitted to the paper. Disconnect the printer, remove the toner cartridge, open the notch on the lid, and mark the non-photosensitive part of the drum and reload it. After booting for a while, and then checking out if the check mark has moved, you can judge whether the photoconductor drum is working properly. If the toner cannot be supplied normally or the laser beam is blocked, blank paper will also be printed. Therefore, check that the toner is used up, that the cartridge is properly loaded in the printer, that the sealing tape has been removed, or that there is no obstructer on the laser light path. It should be noted that the power must be turned off during the inspection because the laser beam may damage the operator's eyes.
Second, print paper output black
For the dot matrix printer, the cause of this failure is ribbon stripping, excess ink on the ribbon, dirty print head, poor ribbon quality, and too close position of the push rod. During the inspection, the position of the push rod should be adjusted first. If the fault cannot be eliminated, replace the ribbon, clean the print head, and generally correct the fault.
For inkjet printers, it is important to check whether the nozzle is damaged, whether the ink tube is broken, the type of the ink is normal, etc. For the laser printer, it is mostly due to the failure of the corona discharge wire or the failure of the control circuit, which causes the laser to emit continuously, resulting in printing. The output is completely black. Therefore, it should be checked whether the corona discharge wire has been disconnected or the corona high pressure exists, and whether the beam detector in the laser beam path is working properly.
Third, the print character is incomplete or the character is not clear
For inkjet printers, there may be two reasons: the ink cartridge is completely ink, the printer is not used for a long time, or it is exposed to direct sunlight, causing nozzle clogging. The solution is to replace the ink cartridge with new ink. If the cartridge is not used up, it can be concluded that the nozzle is blocked: remove the ink cartridge (for the ink cartridge nozzle is not an integrated printer, you need to remove the nozzle), soak the nozzle in warm water for a while, Note that you must not immerse the circuit board in water, otherwise the consequences can be disastrous.
For the dot matrix printer, there may be several reasons: the ribbon is used for a long time; the print head has not been cleaned for a long time, and there is too much dirt; the print head has a broken needle; the print head drive circuit is defective. The solution is to adjust the distance between the print head and the print roller first. The fault cannot be eliminated. You can change the ribbon. If it is not enough, you need to clean the print head. The method is: Remove the two fixing screws on the print head and take down the print head. Use a needle or a small hook to remove dirt from the front and back of the print head. Usually the ribbon fibers accumulated for a long time are printed. The back of the head can see a few drops of indicator oil at the place where the needle is seen, to remove some of the dirt, do not load the ribbon with blank sheets of paper, and then reload the ribbon so that the problem can be basically solved if it is a print head break. Needle or drive circuit problem, you can only replace the print pin or drive tube.
Fourth, print writing is light
For the dot matrix printer, most of the causes of this type of failure are dry ink ribbon cartridges, broken needles on the print head, and too far positions of the push rods. This can be solved by replacing the ribbon and adjusting the push rod; for inkjet printers, Blockage of the nozzles, overdrying of the ink, incorrect ink type, air in the ink supply tube, and excessive printer operating temperatures can cause this malfunction, and should be used to detect and repair nozzles, ink cartridges, etc.
For laser printers, when the toner in the toner cartridge is low, the development voltage of the developing roller is low, and the toner sensation is poor, the printed writing may also be too light. At this point, remove the toner cartridge and gently shake it. If the print effect does not improve, replace the toner cartridge or adjust the set of light-receiving switches under the printer toner cartridge to match the toner's photosensitivity.
Fifth, the printed side is clear and the other side is not clear
This phenomenon usually occurs on the dot matrix printer. Inkjet printers may also appear, but the probability is small. The main reason is that the print head guide and the print roller are not parallel, resulting in the distance between the two is far. The solution is to adjust the distance between the print head guide and the print roller so that they are parallel.
Specifically, loosen the adjustment tabs on both sides of the printhead guide rail, turn the adjustment tab counterclockwise to reduce the gap, and finally adjust the printhead guide rail and the print roller in parallel to solve the problem. However, pay attention to adjust the direction of the adjustment, you can gradually adjust, print more than a few times.
Six, repetitive smudges appear on the printing paper
Repeatedly appearing faults in the dot matrix printer are mostly caused by ribbon removal or excess ink. Replace the ribbon cartridge to eliminate it.
The repetitive appearance of ink-jet printers is caused by ink leakage from ink tanks or ink tubes. When the performance of the nozzles is poor, the ejected ink is not properly disconnected from the remaining ink and is in an equilibrium state. Ink leakage may also occur.
The laser printer has a certain regularity in this phenomenon. As a piece of paper passes through the printer, the 12 rollers in the machine turn more than one revolution, and the largest photosensitive drum rotates 2 to 3 turns. The feed roller may turn Ten laps, when there are equally spaced stains on the paper, may be caused by dirty or damaged rolls.
Seventh, the print head is blocked, stop and scream or vibrate in the same place
This is mainly due to the fact that the print head guide will become dry when it slides for a long time, and the print head will be obstructed when it moves. To a certain extent, printing will stop. If it is not processed in time, the drive circuit may be burned in severe cases. The solution is to apply a few drops of oil on the print rails and move the print head back and forth to evenly distribute it. After restarting, if there is any obstruction, the driver circuit may be burned out and you need to get it to the maintenance department.
Eight, the printer does not print
There are many reasons why printers do not print. There are printers and computers. The following are introduced separately:
1. Check if the printer is online. On most printers, there is a light next to the “OnLine†button that indicates the online status. Under normal circumstances, the online light should be on. If this indicator is off or blinking, the connection is abnormal. Check whether the printer power is on, whether the printer power switch is on, and whether the printer cable is properly connected. If the online indicator is normal, turn the printer off and on again to see if the print test page is normal.
2. Check if the printer has been set as the default printer. Click Start/Settings/Printer to check if there is a black hook on the currently used printer icon and then set the printer as the default printer. If there are no printers used in the Printers window, click the Add Printer icon and follow the prompts to install.
3, check whether the current printer has been set to suspend printing by right-clicking the printer icon in the Printers window and checking the "Pause Print" in the drop-down menu that appears. If there is a small hook on the option, if " Pause printing" Please cancel this option.
4. Just type in some text in Notepad and click Print on the File menu. If you can print a test document, then you have a problem with the print program. Check whether the correct printer is selected for WPS, CCED, Word, or other applications. If the application is a print file, check the print output generated by the application. is it right or not.
5, check the computer's hard disk free space is too small. If the free space of the hard disk is less than 10MB, it cannot be printed. Check the method is to right-click on the hard disk icon of "Install Windows" in "My Computer", select "Properties", check the hard disk space in the "General" tab, if the hard disk If the remaining space is less than 10MB, you must clear the Recycle Bin and delete the temporary files, expired files, or files that are no longer in use on the hard disk to free up more space.
6, check the printer driver is appropriate and print configuration is correct. In the "Printer Properties" window "Details" option check the following: In the "Print to the following port" selection box, check the printer port settings are correct, the most commonly used port is "LPT1 (printer port)", but some The printer requires the use of other ports; if you cannot print large files, you should focus on checking the “Timeout Settings†values ​​in the “Timeout Settings†section. This option is valid only for printers that are directly connected to the computer, but not when using network printers.
7, check the computer's BIOS settings in the printer port is open. The port used by the printer in the BIOS should be set to "Enable". Some printers do not support the print port signal of the ECP type. The print port should be set to the "Normal, ECP+EPP" mode.
8, check the computer for viruses, if necessary, antivirus software for antivirus.
9. Check if the printer driver is damaged. You can right-click the printer icon, select Delete, and then double-click Add Printer to reinstall the printer driver.
10. There is no paper or paper jam in the printer's input tray, and the printer's toner cartridge, ribbon, or toner cartridge is valid. If it is not valid, it cannot be printed.
Nine, the printer jams or can not move paper
The most common problem with the printer is a paper jam. When such a fault occurs, the indicator on the operation panel will light up and send an alarm signal to the host. There are many reasons for this failure. For example, there are debris in the paper output path, the rotation of components such as the paper feed roller fails, the paper tray does not feed paper, and the sensor malfunctions. It is very simple to eliminate such failures by simply opening the cover. Remove the jammed paper, but note that the paper must be pulled in the direction of the paper feed. Never turn any knob in the opposite direction.
If paper jams occur frequently, check the paper feed path and remove debris from the output path. The front edge of the paper is just above the metal plate. Check if the rollers are worn or the springs are loose and the pressure is not enough, ie the paper cannot be fed into the machine. When the paper roll is worn out and cannot be replaced at one time, the rubber band can be used for emergency treatment. After winding the rubber band, the friction force of the paper is increased and the paper feeding can be restored to normal. In addition, the paper loading tray is not installed properly, and the paper quality is not good (too thin, too thick, and damp), which may also cause a paper jam or failure to pick up the paper.
Ten, print messy characters
Whether it is a stylus printer, inkjet printer or laser printer print garbled phenomenon, mostly due to damage to the print interface circuit or damage to the host microcontroller, but the actual repair found that the printer interface circuit failure is more common, due to the interface circuit The micro power supply is used. Once the interface is charged and plugged to generate high-voltage static electricity instantaneously, it is easy to break through the interface chip. Generally, simply replace the interface chip to eliminate such faults. In addition, this phenomenon may also occur if the fonts have not been correctly loaded into the printer.
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