Troubleshooting; The Power Source Does Not Start, Control Panel Off - Cebora BI-WELDER 1365 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 (6 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 (5)
and board filter (10).
♦ Make sure that the terminals IN1 and IN2 on filter board (10) are not short-
circuited between them or towards earth.
♦ Make sure that the mains input terminals P1 and P2 on power board (13) 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 P1 and P2 on power board (13) = 115 or 230 Vac, with switch (5) closed.
♦ Check mains voltage presence on terminals IN1 e IN2 on filter board (10). If
absent, check power cable and plug, and switch (5), and replace if necessary. If
present check connections between power board (15) and filter board (10); if
correct, replace filter board (10).
♦ Check the mains voltage conditions.
♦ Replace power board (13).
3.302.110
WARNINGS
PERSONNEL.
NOTE
Correct?
NO
Correct?
YES
YES
NO
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18/11/02