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PRECISION TIG 185
F-18 F-18
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TROUBLESHOOTING & REPAIR
T1 TRANSFORMER TEST (continued)
TEST PROCEDURE
1. Remove main supply power to the
machine.
2. Using the 3/8” nutdriver remove the
case wrap-around cover.
3. Locate plugs J3 and J4 on the
control board. See Figure F.2.
4. Carefully apply the correct input
power making certain the reconnect
configuration at the input switch is
correct for the input voltage applied.
Turn the TIG 185 ON.
5. Using the voltmeter carefully test for
the correct transformer secondary
voltages per Table F.1.
PRECISION TIG 185 CONTROL BOARD
J2
J3
J4
PIN 4 (LEAD #201)
PIN 3 (LEAD #204
)
PIN 7 (LEAD #209)
PIN 8 (LEAD #210)
PIN 3 (LEAD #232)
PIN 2 (LEAD #260)
FIGURE F.2 - Plugs J3 & J4 on Control Board