Snap-On TIG 250 AC-DC, Руководство по обслуживанию

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CEBORA S.p.A.
18
♦
Check the presence of 30 Vac supply voltage, conducting the CONTROL
BOARD (40) POWER SUPPLY TEST, par. 3.3.1 if necessary, particularly the
one relating to J8.
♦
Replace HF (42) and/or control (40) boards.
HF BOARD (42) POWER SUPPLY TEST.
WARNING
FOR THIS TEST RE-CONNECT CONNECTOR J3 AND DISCONNECT THE
CONNECTOR J4 ON HF BOARD (42) TO KEEP THE HIGH FREQUENCY GENERATION
DISABLED.
Correct?
‰
HF board (42), connector J3, terminals 1 - 2 = 30 Vac, with HF operation set (Led L on).
YES
NO
♦
Check the wiring between J3 HF board (42) and J9 control board (40).
♦
With power source off, temporarily disconnect connector J3 from HF board (42)
and check the resistance between terminals 1 - 2 of J3 on HF board (42). Correct
values = >Mohm in both directions. If incorrect replace HF board (42). If in short-
circuit also replace control board (40).
♦
Check for the presence of 30 Vac supply voltage, performing if necessary the
CONTROL BOARD (40) POWER SUPPLY TEST, par. 3.3.1, especially the one
relating to J8.
♦
Go to par. 3.3.7.
♦
Replace HF board (42).
3.302.221 15/01/07