The repair of the shredder not feeding paper automatically needs to focus on the four core issues of power supply, sensor head, paper jam cleaning, and overheating protection. The following are specific inspections and solutions:
Basic inspection
Confirm that the power connection is normal: Check whether the plug is loose and whether the switch is turned on. If the motor does not respond, it may be a circuit board failure or poor contact of the relay (tapping the relay may temporarily solve the contact problem).
Check the status of the scrap can: An unclosed scrap can may cause the machine to be unable to power on and run.
Motor status analysis
The motor rotates but cannot feed paper: Usually the sensor head (photoelectric sensor) is faulty and the manufacturer needs to be contacted for repair.
Motor does not rotate:
Paper jam: Clean the paper inlet or use the paper eject button to try to eject the paper; if it does not work, turn the machine head upside down and shake it after powering off to clear the paper jam.
Overheating protection: Continuous use for more than 30 minutes may trigger the protection mechanism and the machine needs to be shut down and cooled for at least 30 minutes.
Mechanical and transmission system troubleshooting
Gear or belt failure: If the motor is running but the paper cannot be rolled in, it may be that the gear is damaged or the belt is loose (common in old models), and the machine needs to be disassembled for inspection or repair.
Cutter blockage: Excessive accumulation of shredded paper may hinder the operation of the cutter and need to be cleaned regularly.
Environmental and operation optimization
Avoid excessive shredding: It is recommended to put no more than 4 sheets of paper at a time to prevent blade wear or paper jam.
Special paper handling: For translucent or slippery paper (such as base map), mixing ordinary paper can enhance paper feeding stability.
If the above steps are ineffective, it is recommended to contact the shredder manufacturer or professional maintenance personnel to check the core components such as circuit boards and motors. In daily use, regular maintenance (such as cleaning dust from electric eyes and checking belt tightness) can reduce the failure rate.