Preliminary inspection:

　　Check if the power supply of the printer is connected properly and confirm if the plug is loose.

　　Check if the connection cable of the printer is intact and undamaged to ensure that it is not broken or damaged.

　　Check if the ink cartridge or toner is sufficient, and refer to the relevant instructions based on the printer model.

　　Troubleshooting:

　　Check if the printer driver is installed properly. If it is not installed or has an updated version, try reinstalling or updating it.

　　Clean the rollers and nozzles inside the printer using specialized cleaning tools or a soft cloth dipped in alcohol.

　　Check if the paper transfer system is smooth and promptly resolve issues such as paper jams.

　　Try restarting the printer and connected computer.

　　Replacing accessories:

　　If using an ink cartridge printer, try replacing it with a brand new ink cartridge to ensure compatibility.

　　If using a toner printer, try replacing it with a brand new toner to ensure compatibility.

　　If the nozzle or drum is damaged, it may be necessary to replace the original nozzle or drum.

　　Repair for specific faults:

　　If there is blurry printing, it may be due to insufficient ink cartridges or toner, or the drum and nozzle need to be cleaned.

　　If there is a paper jam issue, check the paper transfer system and remove any blocked paper.

　　For battery contact issues, you can try adding two rudder tin for repair.

　　Seeking professional assistance:

　　If the above steps cannot solve the problem, it is recommended to contact the customer service of the printer manufacturer or seek the help of professional repair personnel.

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