Read the exact message
Photograph the complete display and write down the code exactly. Similar phrases can refer to different doors, sensors or states, and paraphrasing often sends troubleshooting in the wrong direction.
Note when the message appears: immediately at boot, only when a door moves, or after a game sequence. Timing is diagnostic information.
Inspect the physical door path
Check that the door closes squarely, latches fully and is not being held out by a cable, loose harness or damaged lock. Transport can shift panels enough to make an interlock miss its target.
Look for the original switch and actuator before assuming the switch is bad. Bent brackets and missing plastic tabs are common mechanical explanations.
Avoid permanent bypasses
Safety and security interlocks exist for a reason. Do not defeat a switch simply to silence a message. A bypass can hide a real cabinet problem and may expose energized areas when a door is open.
If a service procedure calls for temporarily holding a switch during diagnosis, follow the manufacturer documentation and restore the machine to its intended configuration afterward.
Configuration and reset behavior
Some messages clear automatically once a door is closed; others require a service acknowledgement or a completed boot cycle. Use the exact platform manual rather than generic reset sequences from a different machine family.
If the machine repeatedly forgets state or returns to errors after power loss, document that pattern before replacing parts.
When to stop
If you see damaged mains wiring, signs of overheating, severe corrosion or unknown modifications, disconnect power and move from hobby troubleshooting to qualified service.
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