Lincoln Electric PRECISION TIG 375 Service Manual page 70

F-24
HIGH FREQUENCY CIRCUIT DISABLE PROCEDURE (continued)
P P R R O O E E D D U U R R E E
1. Remove the input power to the Precision TIG
375 machine.
2. Using the 3/8" nut driver, remove the right
side case cover.
3. Locate the Spark Gap Assembly at the lower
rear right side of the machine. See Figure
F.3.
4. Carefully remove the three leads from the
Spark Gap Assembly. See Figure F.3.
5. Insulate the leads from each other and from
the case.
TROUBLESHOOTING & REPAIR
FIGURE F.3 – SPARK GAP ASSEMBLY
PRECISION TIG 375
6. When voltage testing and scope measure-
ments are complete, reconnect the three
leads to the Spark Gap Assembly.
7. Reassemble the right side case cover.
F-24