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SiemensSINUMERIK 808D/828D
700015 — Alarm 700015 (Gear position signal error) Diagnostic Tree
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Check the gear position sensors (proximity switches, microswitches, or encoders) on the gearbox to ensure they are clean, correctly adjusted, and functioning properly. Since alarms numbered 700000 and above are Machine Manufacturer (OEM) PLC alarms, refer to your machine tool builder's electrical schematics and documentation if the issue persists.
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