126
MAINTENANCE
F
4.2 Troubleshooting
Symptom Possible Cause Corrective Action
Controller does not
power on when
standby power switch
is turned on.
♦ Power cord unplugged or faulty.
♦ Blown fuse(s).
♦ Plug in power cord.
♦ Replace power cord.
♦ Replace fuses. Reference “4.4 Fuse
Replacement and Voltage Selection
Means” on page 130.
Handpiece does not
operate.
♦ Handpiece cord not connected
securely, if applicable.
♦ Handpiece cord and/or button, if
applicable, faulty.
♦ Handpiece faulty.
♦ If using a footswitch, footswitch
cord not connected securely.
♦ Footswitch cord or footswitch
faulty.
♦ Handpiece safety is in the safe,
or off position, if applicable.
♦ Securely connect handpiece cord to
the handpiece, if applicable, and the
controller receptacle.
♦ Replace handpiece cord, where
applicable. If handpiece cord is
permanently affixed, return
handpiece for service.
♦ Return for service.
♦ Securely connect footswitch cord to
controller receptacle.
♦ Return for service.
♦ Move safety, if applicable, to the
appropriate operating position.
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