Cebora SOUND MIG 2035/M Pulse Service Manual page 15

CEBORA S.p.A.
♦ Check the wiring between J3 power supply board (25) and terminals TP3(+) and
TP4(-) of power board (26).
♦ With the power source off, temporarily disconnect the power supply board (25)
from the power board (26) and check the resistance between terminals 1 and 2 of
J3 on power supply board (25). If short-circuited, replace the power supply board
(25) and power board (26).
♦ Replace the power board (26).
CONTROL BOARD (27) POWER SUPPLY TEST.
Control board (27), connector J10, terminals 1(+) - 2(-) = +27 Vdc;
Control board (27), connector J10, terminals 3(+) - 4(-) = +14 Vdc;
Control board (27), connector J3, terminals 3(+) - 1(-) = +5 Vdc.
♦ Check the wiring between J10 control board (27) and J2 power supply board (25).
♦ With the power source off, temporarily disconnect the connector J10 on control
board (27) and check the resistance between terminals 1 - 2 of J10 on control
board (27), and the resistance between terminals 3 - 4 of J10 on control board
(27). If short-circuited, replace control board (27) and power supply board (25).
♦ Replace power supply (25) and control (27) boards.
CONTROL PANEL POWER SUPPLY TEST.
Push-pull board (43), connector J1, terminals 4(+) – 5(-) = +24 Vdc.
Push-pull board (43), connector J1, terminals 10(+) – 3(-) = +5 Vdc.
♦ 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).
♦ With the power source off, temporarily disconnect the connector J12 on control
board (27) and check the resistance between terminals 12 and 9 (+24 Vdc line),
and the resistance between terminals 12 and 26 (+5 Vdc line), on the patch
connector left free by J12. If short-circuited, replace panel (41) and/or push-pull
(43) and control (27) boards.
♦ Replace the control board (27).
♦ Replace the panel board (41) and/or push-pull board (43).
♦ Replace the panel board (41) and/or push-pull board (43).
♦ Replace the control board (27).
3.302.161
Correct?
YES
Correct?
YES
NO
NO
15
24/03/2004