Troubleshooting; The Power Source Does Not Start, Control Panel Off - Cebora Power Tig 1540 DC-HF 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 (2 MINUTES).
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 (6),
power board (29) and fan (16).
♦ Make sure that the terminals X220 and VAC1 on power board (29) are not short-
circuited between them or towards earth.
♦ Make sure that terminals of the fan (16) are not short-circuited between them or
towards earth.
♦ Mains not suitable to power the power source (ex.: insufficient installed power).
MAINS CONNECTION TEST.
Terminals X220 and VAC1 on power board (29) = 230 Vac, with switch (6) closed.
♦ Check power cable and plug and replace if necessary.
♦ Check switch (6), and replace if defective.
♦ Check the mains voltage conditions.
PANEL BOARD (26) POWER SUPPLY TEST.
Panel board (26), connector CN2, terminals 1(+) and 2(-) = +5 Vdc.
3.302.212
WARNINGS
PERSONNEL.
NOTE
Correct?
NO
Correct?
YES
Correct?
YES
YES
NO
NO
8
12/01/06