HP HP printer after-sales service points in various cities across the country-National 24-hour customer service repair center

Warm reminder: If you have network connection driver problems, please call the number in the manual

Dear users, no matter what your needs are, as long as you call our 24-hour unified maintenance service hotline: We will do the rest

1. Our customer service representatives will provide you with professional consultation and answers!

2. We will arrange a maintenance outlet nearby The service is on time according to the time you agreed!

3. While providing the service, we will explain the working principle and process of the product to you in detail!

4. We will take the initiative after the service Explain to you the common sense of product use and guide your use!

5. Your service information will be fed back to the customer service center simultaneously, and we will arrange regular return visits by customer service personnel!

As As the number of users increases, maintenance failures also increase, which brings great inconvenience to users’ daily use!

1. Solutions to 3 common problems with HP printers

1 . When printing, a DOT400X port error is displayed. This situation is mostly due to a problem with the USB port, either it is not recognized correctly, or the length of the USB cable does not meet the specifications.

Solution: Replace the USB cable. Another possibility is that the printer driver is not installed correctly.

Even if the installation is correct, this problem will occur if the driver and port do not match. Therefore, when troubleshooting, we should combine these three to analyze the cause.

2. After the USB interface of the printer is connected to another USB interface of the computer, the computer displays "Automatic Installation", but does not display the icon. Trying to use the original computer driver to print does not respond. When such a problem occurs, we have to seriously doubt whether only one USB port is used and the other USB port was not installed successfully. At this time, we enter the original driver, find "Properties", then click on this port, uncheck the "Offline Status" displayed by the printer, then restart the printer to print, and there should be no related faults.

3. After running HP's own CD-ROM installation program, if an error window appears at the end of copying files, or when the installation is ended with "Add Printer", the interface displays "The specified file cannot be found" " and other errors.

Such problems often occur because after repeatedly installing the program many times, the program itself appears in an abnormally chaotic state in the system. To solve this kind of problem, we should use the "Device Manager" to uncheck "Other Devices" on the premise of using the original driver, and then refresh the system or scan for new hardware. "USB Printing Support" will be updated. Here, the editor recommends that you select the "HB" directory under the "Drivers" directory. The system will automatically find the corresponding files, saving you a lot of trouble later.

2. HP printer cannot print normally

1. Fault phenomenon

After the HP 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 rotating for a few times, the [Paper Feed] indicator light on the operation panel flashes, and the printer does not print.

2. Troubleshooting

Under normal circumstances, after the HP printer is turned on, the nozzle cap of the ink suction mechanism on the right side of the printer drops and is away from the inkjet head. At this time, the inkjet carriage starts Move to the left, and then quickly return to the ink suction mechanism (inkjet head cleaning unit) on the right after moving to the left end. The ink suction mechanism starts a cleaning process including wiping the nozzles and sucking ink. After cleaning, the nozzle cap of the ink absorbing mechanism moves upward to cover the inkjet head. Waiting for the next print command to be executed. This fault is that the character carriage moves to the left as soon as the printer is turned on, and the ink-absorbing mechanism is constantly rotating, indicating that the nozzle cap of the ink-absorbing mechanism does not cover the inkjet head before turning on the printer.

3. Fault analysis

According to this analysis, it may be that the transmission mechanism in the ink suction mechanism is faulty, which prevents it from resetting normally; the position detection sensor in the ink suction mechanism fails, that is, the ink suction mechanism fails. The ink mechanism cannot detect the inkjet head and reports an error message.

4. Troubleshooting method

First unplug the power plug, use a flat-blade screwdriver to pry open the buckles (two on each side) from the four notches on the back of the printer, and remove Remove the rear cover. Unplug the operation switch plug on the lower cover from the main control circuit board, use a flat-blade screwdriver to pry open the buckles on both sides from under the printer cover, lift it up from the front, and remove the lower cover.

Use a special tool to unscrew the 5 screws under the printer frame and remove the black plastic bottom plate. Move the character carriage to the middle, unscrew the one fixing screw of the ink absorbing mechanism on the right side of the frame and the two screws on the back of the frame from the front of the printer frame, and unplug the position of the ink absorbing mechanism from the main control circuit board. Sensor plug, and then remove the entire ink absorbing mechanism along the direction of the frame.

Use the RXl block of the multimeter to check the sensor of the ink absorbing mechanism (the sensor is a normally open reed type), that is, insert the test pen into the sensor plug, turn the transmission gear of the ink absorbing mechanism by hand, and observe the nozzle Check whether the pointer on the multimeter reacts when the cap rises to its highest point to determine whether the sensor has failed. In this case, it was determined after inspection that the sensor failed, and the fault was eliminated after replacement.

National after-sales network distribution areas: Unified service hotline:

National door-to-door service areas: Beijing, Hangzhou, Suzhou, Shanghai, Nanjing, Chengdu, Chongqing, Guangzhou, Zhuhai, Foshan, Shenzhen,

Zhongshan, Dongguan, Nanning, Xiamen, Haikou, Huizhou, Jiangmen, Xuzhou, Sanya, Guilin, Qingyuan, Zhaoqing, Yangjiang, Ganzhou,

Quanzhou, Wuhan, Huangshi, Yichang, Tianjin, Hefei, Nanchang, Cixi, Yuyao, Wuxi, Shijiazhuang, Ningbo, Zhengzhou, Jinan,

Xi'an, Fuzhou, Fuqing, Mianyang, Lanzhou, Changzhou, Wenzhou, Kunming, Taiyuan, Changsha, Guiyang , Shenyang, Luoyang, Changchun, Harbin,

Nanjing, Wuhu, Yangzhou, Jiujiang, Huaihua, Jinhua, Jiaxing, Cixi, Zhuzhou, Yuyao, Nantong, Anqing, Shangqiu, Kunshan, Shaoxing,

Baoji, Liuzhou, Huzhou, Changde, Zhangjiagang, Taicang, Changshu, Beihai, Jiangyin, Dazhou, Zhanjiang, Wujiang,

Hohhot, Luzhou, Baotou, Zhoushan, Urumqi, etc., unified repair reports will be arranged nearby The master comes to repair