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F-24F-24
PRECISION TIG 275
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TROUBLESHOOTING & REPAIR
HIGH FREQUENCY CIRCUIT DISABLE PROCEDURE (continued)
PROCEDURE
1. Remove the input power to the PRECISION
TIG 275 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.2.
4. Carefully remove the three leads from the
Spark Gap Assembly. See Figure F.2.
5. Insulate the leads from each other and from
the case.
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.
FIGURE F.2 – SPARK GAP ASSEMBLY
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!
.015 Spark Gap
LEADS
ATTACH
HERE
VIEWED FROM ABOVE