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The maintenance technician completed troubleshooting and repair of Servo Drive Alarm No. 1 on the Makino V33.
Initial fault symptoms: The Makino V33 servo drive displayed Alarm No. 1, and the operator panel showed the same alarm message simultaneously. Pressing the alarm reset button could not clear the fault.
Confirmed cause: After powering down for inspection, the technician translated the alarm message and confirmed it was caused by a drive cooling fan failure.
Repair procedure: The technician removed the faulty fan, replaced it with a new one, and reinstalled it into the drive.
Verification steps: After powering the machine back on, Alarm No. 1 on the drive disappeared. The alarm on the operator panel could then be reset successfully, confirming the fault was cleared.
Timeline
00:00 — Alarm fault discovered: FANUC Servo Alarm No. 1 appeared, operator panel displayed the alarm, and reset was not possible.
00:23 — Machine powered down for troubleshooting; alarm message translated and identified as drive cooling fan failure.
00:35 — Cooling fan replaced: old fan removed and new fan installed.
00:45 — Machine powered back on; servo drive alarm disappeared, and operator panel alarm could be reset.
01:20 — Fault fully resolved, machine returned to normal operation, and maintenance completed.
