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TABLE OF CONTENTS
TECHNICAL REFERENCE
SERVICE
MANUAL
VF-SERIES
CB3 controls the power to coolant pump only. It can be blown by an overload of the coolant pump motor or a short in the
wiring to the motor.
CB4 controls the 115V AC to the air solenoids, 4th axis brake, and the oiler. It is never expected to trip. If it does trip, it is
likely caused by a short circuit in the wiring on the I/O assembly or the wiring to the solenoids on the spindle head.
11.7 OPERATORS LAMP TRANSFORMER
Transformer T4 supplies low voltage to the operators lamp. The primary is 115V AC and the secondary is 10V AC. The
primary is protected at ½ amp by F6. It is connected to the POWER PCB by connector P19.
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