Restore Blade-Holder Movement When the Car Still Travels

When the car moves after cutting starts but the blade holder does not drop, first verify the power adapter, cutting pressure, and cable connections. Use the original power adapter, increase the cutting pressure to 300 or higher, and inspect and reconnect any loose wiring. If these checks do not restore blade-holder movement, the machine’s mainboard is likely faulty and must be replaced.

Documented Symptom and Possible Causes

This troubleshooting process applies when the machine initiates cutting and the car moves, but the blade holder remains raised. The documented causes are insufficient power input, a cutting pressure setting that is too low, loose wiring, or a mainboard failure.

Insufficient input power may prevent the blade holder from operating properly. A low pressure setting may also keep it from lowering as expected. If power and pressure are correct, disconnected or loose cables may be interrupting operation. When these conditions have been ruled out, the mainboard is the likely source of the fault.

Checks and Fixes to Perform

1. Verify the power adapter. Confirm that the machine is using its original power adapter. Low input power may prevent the blade holder from functioning correctly.
2. Increase the cutting pressure. Set the cutting pressure to 300 or higher, initiate another cutting test, and observe whether the blade holder lowers.
3. Inspect the wiring. Check the relevant cable connections for loose wiring and reconnect the cables according to the documented wiring-inspection instructions.
4. Evaluate the mainboard. If the original adapter is in use, the pressure has been raised, and the wiring is securely connected, the machine’s mainboard is likely faulty and requires replacement.

Expected Result and Fault Verification

After correcting the power supply, pressure setting, or cable connection, the expected result is that the blade holder lowers correctly when cutting begins. Run a cutting test after each applicable check so that you can determine whether that specific change restored normal movement.

If the car continues to move while the blade holder remains raised after all three checks, the documented conclusion is a likely mainboard failure. The blade-down action is controlled by the Y-axis motor signal from the mainboard, so a malfunctioning mainboard can prevent the holder from lowering.

When Mainboard Replacement Is Required

If the checks do not resolve the issue, replace the screen protector cutting machine’s mainboard. After replacement, the blade holder should drop normally. If you need the replacement part, contact your local distributor or the seller of your machine.