Hewlett-Packard does not seem to have encountered this situation at present, so the common fault handling is uploaded:
Eighteen common failures and solutions for HP inkjet printers. Inkjet printers are common equipment in the office, and HP inkjet printers have the advantages of advanced technology and excellent workmanship. They have a good reputation in the field of inkjet printers. It is more common among users. Here is an example of checking and eliminating common failures of HP inkjet printers.
Fault 1. After replacing the new ink cartridge, the HP 420C inkjet printer's "ink-out lamp" is on. Fault phenomenon: "ink-out lamp" is on. After replacing the new ink cartridge, the "color ink-out" lamp on the boot panel is still on.
Failure inspection and analysis: There are generally two reasons for this failure. One is that the ink cartridge is not installed in place or correctly installed; the second is that the old ink cartridge is removed and replaced with a new ink cartridge in the shutdown state.
Troubleshooting: Turn on the printer power and move the print head to the ink cartridge replacement position. Reinstall the new ink cartridge according to the correct method of replacing the ink cartridge, let the printer test the machine after recharging, and troubleshoot.
Troubleshooting experience: After replacing the new ink cartridge, the printer must charge the ink delivery system. If the printer is turned off at this time, the printer cannot detect the newly installed ink cartridge. Secondly, some printers use the electronic counter inside the printer to calculate the ink volume. When the counter reaches a certain value, the printer determines that the ink is used up. During the ink cartridge replacement process, the printer resets its internal electronic counter to confirm that a new ink cartridge is installed.
Trouble two, HP 420C inkjet printer does not print
Fault phenomenon: After the HP 420C inkjet printer is turned on, the carriage moves to the left for a certain distance and then stops. The ink suction mechanism on the right side of the printer stops after a few rotations. The [paper feed] indicator on the operation panel flashes, and the printer does not print.
Failure check and analysis: Under normal circumstances, after the HP 420C inkjet printer is turned on, the nozzle cap of the ink absorption mechanism on the right side of the printer is lowered, away from the inkjet head, then the carriage starts to move to the left, and returns to the left end quickly To the ink suction mechanism (ink head cleaning unit) on the right, the ink suction mechanism starts a cleaning procedure including two operations of wiping the nozzle and sucking ink. After cleaning, the nozzle cap of the ink absorption mechanism moves upward to cover the inkjet head. Wait for the next print command. The problem is that the printer moves to the left as soon as the printer is turned on, and the ink absorption mechanism is constantly rotating, indicating that the nozzle cap of the ink absorption mechanism did not cover the inkjet head before starting. According to the analysis, it may be: The transmission mechanism in the ink mechanism is faulty, making it unable to reset normally; the position detection sensor in the ink absorption mechanism fails, that is, the ink absorption mechanism cannot detect the inkjet head, and reports an error message.
Troubleshooting method: check the ink absorption mechanism according to the above analysis, the specific methods are as follows:
1. Unplug the power plug, use a flat-blade screwdriver to pry off the buckles (two on each side) from the four slots on the back of the printer, and remove the rear cover;
2. Unplug the operation switch plug on the lower cover from the main control circuit board, use a flat-blade screwdriver to pry the buckles on both sides from under the printer cover, and lift up from the front to remove the lower cover;
3. Use a special tool to unscrew the 5 screws under the printer frame and remove the black plastic bottom plate;
4. Move the carriage to the middle, unscrew one ink suction mechanism fixing screw located on the right side of the frame and two screws on the back of the chassis from the front of the printer frame, and remove the ink suction mechanism from the main control circuit board Position sensor plug (J8), then remove the entire ink suction mechanism in the direction of the frame;
5. Use the RXl block of the multimeter to check the ink suction mechanism sensor (the sensor is a normally open reed type), that is, insert the test pen on the sensor plug, turn the transmission gear of the ink suction mechanism by hand, and observe the multimeter when the nozzle cap rises to the highest point There is no response from the pointer on to determine whether the sensor has failed. In this case, the sensor was determined to be invalid after inspection. Troubleshooting after replacement.
Troubleshooting experience: HP DeskJet 420 inkjet printer is an economical household inkjet printer, the printer is only equipped with a black nozzle (HP 51626A), its ink suction mechanism is driven by the ink suction mechanism motor, ink pump, nozzle cap And position sensor. When the printer starts to work, the drive motor drives the nozzle cap of the ink absorption mechanism to drop through the transmission gear, so that the inkjet head leaves the nozzle cap. At this time, the carriage begins to move to the left. After moving to the left end, it quickly returns to the ink absorption mechanism (jetting At the ink head cleaning unit), the ink suction mechanism is rotated by the driving motor to align the nozzle cap with the ink jet head, and then the nozzle cap is driven to rise, so that the nozzle cap seals the ink jet head, and at the same time, the position of the ink suction mechanism The contact of the sensor is closed, and a cleaning procedure including two operations of wiping the nozzle and sucking ink is performed. After the cleaning is completed, the nozzle cap of the ink suction mechanism will move upward to cover the inkjet head, waiting for the next printing command to be executed. In this case, because the position sensor of the ink suction mechanism cannot be closed, the ink suction mechanism is continuously rotating, and the printer cannot perform the inkjet head cleaning procedure normally, and stops working and alarms.
Trouble three, HP DeskJet600 inkjet printer multi-feeds
Symptom: When the printer executes the print command, it feeds multiple sheets of printing paper at a time.
Failure inspection and analysis: The causes of this failure are generally the following: First, the printing paper does not meet the requirements, such as paper sticking together. The second is that too much paper is loaded in the input tray. The third is to load different thicknesses of printing paper, and at the same time feed the thick paper together with the thin ones. Upon inspection, it was found that the thickness of the paper in the input tray was different,
Troubleshooting: The solution is to remove the printing paper and load the same type, weight, and size of printing paper.
Trouble four, the HP DeskJet 640C color inkjet printer prints pages with black trailing faults: after the inkjet printer is turned on, horizontal black trailing traces appear on the pages when printing documents.
Failure inspection and analysis: For inkjet printers, the printed page has a horizontal black trailing phenomenon. The gap between the inkjet head and the printing paper is generally too small, causing the nozzle to rub the printing paper. Due to the back and forth movement of the carriage , The residual ink on the nozzle touches the printing paper, and the horizontal black trailing is generated on the printing paper as the carriage moves back and forth. Obviously, the fault in this case is caused by too small print gap.
Troubleshooting method: Adjust the printing gap as follows:
1. Remove the metal bottom plate and upper cover of the printer;
2. Remove the operation panel assembly of the upper cover of the printer, and then install the operation panel on the main control circuit board of the printer with the upper cover removed for the next adjustment work;
3. Use special tools from the left and right sides of the printer frame to loosen the two fixing screws at the two ends of the guide bar of the carriage, and gently pry the guide bar upward (within the range of the long adjustment hole, the fixing screw is generally adjusted The middle of the hole), temporarily tighten the fixing screw;
4. Turn on the power and print a test page. Observe that if there is still a tail, continue to adjust according to the method of step 3 until the horizontal tail disappears;
5. Tighten the fixing screws on both sides of the guide bar of the word car, and install the upper cover and the metal bottom plate respectively.
After the above-mentioned treatment, the printer troubleshooting.
Fault 5. HP660C inkjet printer cannot print characters. Fault phenomenon: the inkjet printer starts printing and executes the print command, but there is a printing action, but it cannot print characters.
Failure inspection and analysis: the printer has printing action, the character car can move left and right, the printing paper runs normally, but the characters cannot be printed. This failure is generally a problem with the print head. There are mainly the following types: First, the nozzle is installed incorrectly. If the nozzle cannot be accurately positioned during installation, it will cause poor contact between the nozzle and the circuit contacts on the base, causing the nozzle to not receive the signal normally, causing the inkjet to be abnormal and printing characters failure. The second is the clogging of the nozzle, the third is the failure of the connected signal cable, and the fourth is that the ink in the nozzle is used up. After inspection, it is found that there is a problem with the nozzle installation.
Troubleshooting method: The print head should be removed and reinstalled. When installing, first install the black print head, pay attention to install it in place; then install the color print head, and after installing it, close the printer cover. Note that during the installation process, do not touch or bump the nozzles and the copper contacts on the nozzle base. Keep it clean to avoid poor contact. Also avoid touching or bumping the ink nozzles to prevent nozzle damage. Each time the print head is replaced or reinstalled, the black print head and color print head must be aligned to keep the black ink and color ink aligned when used together on the same line of text or the same image.
Trouble six, HP DeskJet 670C color inkjet printer does not print
Symptom: After the HP DeskJet 670C color inkjet printer is turned on, the carriage can be reset normally, but when input paper is printed, the paper feed lift of the printer does not lift up, the printer cannot suck paper, and the [feed] indicator on the operation panel flashes , The printer does not print.
Failure inspection and analysis: For the HP DeskJet 670C color inkjet printer, the main reasons that cause the fault indicator on the operation panel to flash are the following: First, the printer jams, second, the printer is out of ink (out of ink), and third There are mechanical failures, such as blocked print heads or other failures. Fourth, the paper sensor is dirty or damaged. In this example, the [Paper Feed] indicator on the operation panel flickers when the paper is fed into the printer and the paper feed roller of the printer does not rotate. Generally related to the paper feed mechanism of the printer. Open the printer's panel and use a small plastic rod to press the panel sensor on the upper right of the printer. When the panel is opened, the sensor is disconnected and the printer's carriage will automatically bring the inkjet head to the middle of the replacement inkjet head. The printer does not move at the position; when the panel is closed, the protruding part at the right end of the panel presses down the pressure lever of the sensor, the sensor is closed, and the carriage drives the inkjet head back to the inkjet head cleaning mechanism on the right for forced cleaning) The printer power supply observes the paper feed of the printer. Under normal circumstances, after the HP DeskJet 670C color inkjet printer is turned on, the carriage is reset and the forced cleaning procedure is performed. Then, move it to the left and push the paper lift clutch gear to the left to make the paper lift clutch gear engage and move The paper feed lifting plate under the paper wheel is lifted, and the printing paper placed on the paper feeding plate is fit with the paper feeding wheel. At the same time, the paper feeding motor drives the paper feeding wheel to rotate, and the printing paper is driven by the paper feeding wheel Entering the printing area, when the printing paper touches the paper feed sensor, the paper feed process is completed, the carriage returns to the initial position, the paper feed clutch gear is separated, and the paper feed wheel stops rotating. In this example, after the printer is turned on, after the carriage is reset, the forced cleaning procedure is executed, and then it is moved to the left to push the paper clutch gear block to the left, but the paper clutch gear is not engaged. It is estimated that the paper clutch gear block is not In place, it may be related to the printer's printing gap is too large.
Troubleshooting method: check and adjust according to the following steps:
1. Remove the metal bottom plate and upper cover of the printer;
2. Remove the operation panel assembly of the upper cover of the printer, and then install the operation panel on the main control circuit board of the printer with the upper cover removed for the next adjustment work;
3. Loosen the two fixing screws on both ends of the guide bar of the carriage with special tools from the left and right sides of the printer frame, and gently press down the guide bar (within the range of the elongated adjustment hole, the fixing screw is generally in the adjustment hole The middle position), make the printing gap smaller, and temporarily tighten the fixing screw;
4.
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Eighteen common failures and solutions for HP inkjet printers. Inkjet printers are common equipment in the office, and HP inkjet printers have the advantages of advanced technology and excellent workmanship. They have a good reputation in the field of inkjet printers. It is more common among users. Here is an example of checking and eliminating common failures of HP inkjet printers.
Fault 1. After replacing the new ink cartridge, the HP 420C inkjet printer's "ink-out lamp" is on. Fault phenomenon: "ink-out lamp" is on. After replacing the new ink cartridge, the "color ink-out" lamp on the boot panel is still on.
Failure inspection and analysis: There are generally two reasons for this failure. One is that the ink cartridge is not installed in place or correctly installed; the second is that the old ink cartridge is removed and replaced with a new ink cartridge in the shutdown state.
Troubleshooting: Turn on the printer power and move the print head to the ink cartridge replacement position. Reinstall the new ink cartridge according to the correct method of replacing the ink cartridge, let the printer test the machine after recharging, and troubleshoot.
Troubleshooting experience: After replacing the new ink cartridge, the printer must charge the ink delivery system. If the printer is turned off at this time, the printer cannot detect the newly installed ink cartridge. Secondly, some printers use the electronic counter inside the printer to calculate the ink volume. When the counter reaches a certain value, the printer determines that the ink is used up. During the ink cartridge replacement process, the printer resets its internal electronic counter to confirm that a new ink cartridge is installed.
Trouble two, HP 420C inkjet printer does not print
Fault phenomenon: After the HP 420C inkjet printer is turned on, the carriage moves to the left for a certain distance and then stops. The ink suction mechanism on the right side of the printer stops after a few rotations. The [paper feed] indicator on the operation panel flashes, and the printer does not print.
Failure check and analysis: Under normal circumstances, after the HP 420C inkjet printer is turned on, the nozzle cap of the ink absorption mechanism on the right side of the printer is lowered, away from the inkjet head, then the carriage starts to move to the left, and returns to the left end quickly To the ink suction mechanism (ink head cleaning unit) on the right, the ink suction mechanism starts a cleaning procedure including two operations of wiping the nozzle and sucking ink. After cleaning, the nozzle cap of the ink absorption mechanism moves upward to cover the inkjet head. Wait for the next print command. The problem is that the printer moves to the left as soon as the printer is turned on, and the ink absorption mechanism is constantly rotating, indicating that the nozzle cap of the ink absorption mechanism did not cover the inkjet head before starting. According to the analysis, it may be: The transmission mechanism in the ink mechanism is faulty, making it unable to reset normally; the position detection sensor in the ink absorption mechanism fails, that is, the ink absorption mechanism cannot detect the inkjet head, and reports an error message.
Troubleshooting method: check the ink absorption mechanism according to the above analysis, the specific methods are as follows:
1. Unplug the power plug, use a flat-blade screwdriver to pry off the buckles (two on each side) from the four slots on the back of the printer, and remove the rear cover;
2. Unplug the operation switch plug on the lower cover from the main control circuit board, use a flat-blade screwdriver to pry the buckles on both sides from under the printer cover, and lift up from the front to remove the lower cover;
3. Use a special tool to unscrew the 5 screws under the printer frame and remove the black plastic bottom plate;
4. Move the carriage to the middle, unscrew one ink suction mechanism fixing screw located on the right side of the frame and two screws on the back of the chassis from the front of the printer frame, and remove the ink suction mechanism from the main control circuit board Position sensor plug (J8), then remove the entire ink suction mechanism in the direction of the frame;
5. Use the RXl block of the multimeter to check the ink suction mechanism sensor (the sensor is a normally open reed type), that is, insert the test pen on the sensor plug, turn the transmission gear of the ink suction mechanism by hand, and observe the multimeter when the nozzle cap rises to the highest point There is no response from the pointer on to determine whether the sensor has failed. In this case, the sensor was determined to be invalid after inspection. Troubleshooting after replacement.
Troubleshooting experience: HP DeskJet 420 inkjet printer is an economical household inkjet printer, the printer is only equipped with a black nozzle (HP 51626A), its ink suction mechanism is driven by the ink suction mechanism motor, ink pump, nozzle cap And position sensor. When the printer starts to work, the drive motor drives the nozzle cap of the ink absorption mechanism to drop through the transmission gear, so that the inkjet head leaves the nozzle cap. At this time, the carriage begins to move to the left. After moving to the left end, it quickly returns to the ink absorption mechanism (jetting At the ink head cleaning unit), the ink suction mechanism is rotated by the driving motor to align the nozzle cap with the ink jet head, and then the nozzle cap is driven to rise, so that the nozzle cap seals the ink jet head, and at the same time, the position of the ink suction mechanism The contact of the sensor is closed, and a cleaning procedure including two operations of wiping the nozzle and sucking ink is performed. After the cleaning is completed, the nozzle cap of the ink suction mechanism will move upward to cover the inkjet head, waiting for the next printing command to be executed. In this case, because the position sensor of the ink suction mechanism cannot be closed, the ink suction mechanism is continuously rotating, and the printer cannot perform the inkjet head cleaning procedure normally, and stops working and alarms.
Trouble three, HP DeskJet600 inkjet printer multi-feeds
Symptom: When the printer executes the print command, it feeds multiple sheets of printing paper at a time.
Failure inspection and analysis: The causes of this failure are generally the following: First, the printing paper does not meet the requirements, such as paper sticking together. The second is that too much paper is loaded in the input tray. The third is to load different thicknesses of printing paper, and at the same time feed the thick paper together with the thin ones. Upon inspection, it was found that the thickness of the paper in the input tray was different,
Troubleshooting: The solution is to remove the printing paper and load the same type, weight, and size of printing paper.
Trouble four, the HP DeskJet 640C color inkjet printer prints pages with black trailing faults: after the inkjet printer is turned on, horizontal black trailing traces appear on the pages when printing documents.
Failure inspection and analysis: For inkjet printers, the printed page has a horizontal black trailing phenomenon. The gap between the inkjet head and the printing paper is generally too small, causing the nozzle to rub the printing paper. Due to the back and forth movement of the carriage , The residual ink on the nozzle touches the printing paper, and the horizontal black trailing is generated on the printing paper as the carriage moves back and forth. Obviously, the fault in this case is caused by too small print gap.
Troubleshooting method: Adjust the printing gap as follows:
1. Remove the metal bottom plate and upper cover of the printer;
2. Remove the operation panel assembly of the upper cover of the printer, and then install the operation panel on the main control circuit board of the printer with the upper cover removed for the next adjustment work;
3. Use special tools from the left and right sides of the printer frame to loosen the two fixing screws at the two ends of the guide bar of the carriage, and gently pry the guide bar upward (within the range of the long adjustment hole, the fixing screw is generally adjusted The middle of the hole), temporarily tighten the fixing screw;
4. Turn on the power and print a test page. Observe that if there is still a tail, continue to adjust according to the method of step 3 until the horizontal tail disappears;
5. Tighten the fixing screws on both sides of the guide bar of the word car, and install the upper cover and the metal bottom plate respectively.
After the above-mentioned treatment, the printer troubleshooting.
Fault 5. HP660C inkjet printer cannot print characters. Fault phenomenon: the inkjet printer starts printing and executes the print command, but there is a printing action, but it cannot print characters.
Failure inspection and analysis: the printer has printing action, the character car can move left and right, the printing paper runs normally, but the characters cannot be printed. This failure is generally a problem with the print head. There are mainly the following types: First, the nozzle is installed incorrectly. If the nozzle cannot be accurately positioned during installation, it will cause poor contact between the nozzle and the circuit contacts on the base, causing the nozzle to not receive the signal normally, causing the inkjet to be abnormal and printing characters failure. The second is the clogging of the nozzle, the third is the failure of the connected signal cable, and the fourth is that the ink in the nozzle is used up. After inspection, it is found that there is a problem with the nozzle installation.
Troubleshooting method: The print head should be removed and reinstalled. When installing, first install the black print head, pay attention to install it in place; then install the color print head, and after installing it, close the printer cover. Note that during the installation process, do not touch or bump the nozzles and the copper contacts on the nozzle base. Keep it clean to avoid poor contact. Also avoid touching or bumping the ink nozzles to prevent nozzle damage. Each time the print head is replaced or reinstalled, the black print head and color print head must be aligned to keep the black ink and color ink aligned when used together on the same line of text or the same image.
Trouble six, HP DeskJet 670C color inkjet printer does not print
Symptom: After the HP DeskJet 670C color inkjet printer is turned on, the carriage can be reset normally, but when input paper is printed, the paper feed lift of the printer does not lift up, the printer cannot suck paper, and the [feed] indicator on the operation panel flashes , The printer does not print.
Failure inspection and analysis: For the HP DeskJet 670C color inkjet printer, the main reasons that cause the fault indicator on the operation panel to flash are the following: First, the printer jams, second, the printer is out of ink (out of ink), and third There are mechanical failures, such as blocked print heads or other failures. Fourth, the paper sensor is dirty or damaged. In this example, the [Paper Feed] indicator on the operation panel flickers when the paper is fed into the printer and the paper feed roller of the printer does not rotate. Generally related to the paper feed mechanism of the printer. Open the printer's panel and use a small plastic rod to press the panel sensor on the upper right of the printer. When the panel is opened, the sensor is disconnected and the printer's carriage will automatically bring the inkjet head to the middle of the replacement inkjet head. The printer does not move at the position; when the panel is closed, the protruding part at the right end of the panel presses down the pressure lever of the sensor, the sensor is closed, and the carriage drives the inkjet head back to the inkjet head cleaning mechanism on the right for forced cleaning) The printer power supply observes the paper feed of the printer. Under normal circumstances, after the HP DeskJet 670C color inkjet printer is turned on, the carriage is reset and the forced cleaning procedure is performed. Then, move it to the left and push the paper lift clutch gear to the left to make the paper lift clutch gear engage and move The paper feed lifting plate under the paper wheel is lifted, and the printing paper placed on the paper feeding plate is fit with the paper feeding wheel. At the same time, the paper feeding motor drives the paper feeding wheel to rotate, and the printing paper is driven by the paper feeding wheel Entering the printing area, when the printing paper touches the paper feed sensor, the paper feed process is completed, the carriage returns to the initial position, the paper feed clutch gear is separated, and the paper feed wheel stops rotating. In this example, after the printer is turned on, after the carriage is reset, the forced cleaning procedure is executed, and then it is moved to the left to push the paper clutch gear block to the left, but the paper clutch gear is not engaged. It is estimated that the paper clutch gear block is not In place, it may be related to the printer's printing gap is too large.
Troubleshooting method: check and adjust according to the following steps:
1. Remove the metal bottom plate and upper cover of the printer;
2. Remove the operation panel assembly of the upper cover of the printer, and then install the operation panel on the main control circuit board of the printer with the upper cover removed for the next adjustment work;
3. Loosen the two fixing screws on both ends of the guide bar of the carriage with special tools from the left and right sides of the printer frame, and gently press down the guide bar (within the range of the elongated adjustment hole, the fixing screw is generally in the adjustment hole The middle position), make the printing gap smaller, and temporarily tighten the fixing screw;
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