Troubleshooting; The Power Source Does Not Start, Control Panel Off - Cebora SOUND MIG 2035/M Pulse Service Manual

CEBORA S.p.A.

3.3 - Troubleshooting.

ANY INTERNAL INSPECTIONS OR REPAIRS MUST BE CARRIED OUT BY QUALIFIED
BEFORE REMOVING THE PROTECTIVE GUARDS AND ACCESSING INTERNAL
PARTS, DISCONNECT THE POWER SOURCE FROM THE MAINS AND WAIT FOR THE
INTERNAL CAPACITORS TO DISCHARGE (1 MINUTE).
Items in boldface describe problems that may occur on the machine (symptoms).
Operations preceded by this symbol refer to situations the operator must determine (causes).
♦ Operations preceded by this symbol refer to actions the operator must perform in order to
solve the problems (solutions).

3.3.1 - The power source does not start, control panel off.

MAINS SUITABILITY TEST.
No voltage for mains protection.
♦ Eliminate any short-circuits on the connections between power cable, switch (16),
filter board (47) and power board (26).
♦ Make sure that terminals TP5 and TP6 on filter board (47) and TP1 and TP2 on
power board (26) are not short-circuited.
♦ Mains not suitable to power the power source (ex.: insufficient installed power).
MAINS CONNECTION TEST.
Terminals TP1 and TP2 on power board (26) = 230 Vac, with switch (16) closed.
♦ Check power cable and plug and replace if necessary.
♦ Check switch (16), and replace if defective.
♦ Check the mains voltage conditions.
♦ Replace filter board (47).
POWER SUPPLY TEST.
Power supply board (25), connector J3, terminals 1(+) and 2(-) = +320 Vdc.
3.302.161
WARNINGS
PERSONNEL.
NOTE
Correct?
NO
Correct?
YES
Correct?
YES
YES
NO
NO
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24/03/2004