The Start Button Produces No Effect - Cebora SOUND MIG 2035/M Pulse Service Manual

CEBORA S.p.A.

3.3.4 - The start button produces no effect.

TORCH TYPE RECOGNITION TEST.
Control board (27), connector J12, terminal 11 (or R85 left side) and connector Jl4 (-) = 0
Vdc with push-pull torch inserted (+5 Vdc with other torches).
♦ Check the wiring between J12 control board (27) and J1 panel board (41).
♦ Make sure the push-pull board (43) is correctly mounted on the panel board (41).
♦ Make sure the push-pull torch is correctly inserted on the connector J1 of the
push-pull board (43).
♦ Check for the presence of the jumper between terminals 3 and 7 in the push-pull
torch connector.
♦ Replace the push-pull (43) and/or panel (41) boards.
♦ Replace the control board (27).
START COMMAND TEST WITH TRADITIONAL TORCH.
Control board (27), connector J1 terminals 2(+) – 1(-) = 0 Vdc with button on traditional torch
pressed (+16 Vdc approx. with button released).
♦ Check the wiring between connector J1 control board (27), central adapter (38)
and the torch trigger.
♦ Check torch button. If defective, replace.
♦ See CONTROL BOARD (27) POWER SUPPLY TEST, par. 3.3.1.
♦ Replace the control board (27).
START COMMAND TEST WITH PUSH-PULL TORCH.
Control board (27), connector J12, terminal 3 (or Z1 cathode, connector J9 side) and
connector J14 (-) = approximately 1,2 Vdc, with button on push-pull torch pressed (+4,7 Vdc
with button released).
♦ Check the wiring between J12 control board (27) and J1 panel board (41).
♦ Make sure the push-pull board (43) is correctly mounted on the panel board (41).
♦ Check the wiring between connector J1, terminals 4 and 5, on push-pull board
(43), and the button on push-pull torch.
♦ Check torch button. If defective, replace.
♦ See CONTROL BOARD (27) POWER SUPPLY TEST, par. 3.3.1.
♦ Replace the push-pull (43) and/or panel (41) boards.
♦ Replace the control board (27).
♦ Replace the control board (27).
3.302.161
Correct?
YES
Correct?
YES
Correct?
YES
NO
NO
NO
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24/03/2004