Specifications

60
SECTION 5 MACHINE TESTING / TROUBLESHOOTING / SERVICE
5.8.11 Lock In Switch Circuit
When the Trigger lock switch on the front panel is engaged, this closes the lock in switch circuit on the
PCB control board. This engages the logic that allows the PC650 to continuously re without depressing
the torch trigger constantly. The trigger lock switch is connected to the PCB control board via P6-1 and
P6-2. This activates the logic on IC2 pin 9 which maintains a continuous arc on regardless of the torch
switch input. The logic of the circuit is designed so that depressing the torch a second time will allow the
arc to be discontinued.
CONTENTS