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F
FanucGeneral Series CNC
303 — Alarm 303 (ABSOLUTE PULSE CODER IS FAULTY) Diagnostic Tree
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Step 1 / 3
Sway the cable connected to JF1, JF2, JF3, and JF4 on the main CPU board, JF5-JF8 on the option 2A/2B board, or JF1/JF2 on the option 2C board. If the alarm is generated, exchange the cable.
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