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Fanucalpha i / beta i series
SP9121 — Alarm SP9121 (COMMUNICATION DATA ALARM / Alarm Code C1) Diagnostic Tree
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Detailed troubleshooting steps for the specified alarm (SP9121 - Alarm Code C1 / COMMUNICATION DATA ALARM) are not available in the uploaded source documents. Please refer to Section 3.4.67 of the Fanuc B-65285EN/04 manual, page 122 (Section 4.4.71) of the B-65515EN/01 manual, or page 139 (Section 2.5.4.72) of the B-65555EN/03 manual for the detailed procedure.
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