Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

B–62755EN/018.TROUBLESHOOTING8.1CORRECTIVEACTION FORFAILURESWhen a failure occurs, it is important to correctly grasp what kind offailure occured and take appropriate action, to promptly recover themachine.Check for the failure according to the following procedure :When?With whatoperation?Grasp the kind of failure↓Appropriate action↓RecoveryWhat failure?8.1.1Investigating theConditions underwhich Failure Occurred(1) When and how many times (frequency of occurrences)(2) With what operation(3) What failure occurred1 When did the failure occur?Date and time?Occurred during operation? (how long was the operation?)Occurred when the power was turned on?Was there any lightening surge, power failure, or other disturbances tothe power supply?How many times has it occurredOnly once?Occurred many times ? (How many times per hour, per day, or permonth?)2 With what operation did it occur ?What was the NC mode when the failure occurred?Jog mode/memory operation mode /MDI mode /reference positionreturn modeIf during program operation,1) Where in the program ?2) Which program No. and sequence No. ?3) What program ?4) Occurred during axial movement ?5) Occurred during the execution of an M/S/T code ?6) Failure specific to the program ?Does the same operation cause the same failure ?(Check the repeatability of the failure.)Occurred during data input/output ?For a failure related to feed axis servo1) Occurred at both low feedrate and high feedrate ?2) Ocurred only for a certain axis ?297