The Power Source Does Not Start, Control Panel Off - Cebora SYNSTAR 200 M Manual De Servicio

C
D
Fig. 3.2.a
E
F
G
Fig. 3.2.b
3302316/A
3.3.1 The power source does not start, control
panel off.
MAINS SUITABILITY TEST.
A
□ No voltage for mains protection.
B
NO
H1
H
♦ Eliminate any short-circuits or isolation leaks
towards earth on the connections between
power cord, switch (40) and TP15 and TP4
terminals on power board (45).
♦ Make sure the B1 rectifier bridge on power
board (45) is not in short circuit.
♦ Mains not suitable to power the power source
(e.g.: insufficient installed power).
♦ Replace power board (45).
MAINS CONNECTION TEST.
□ Terminals TP15 and TP4 on power board (45) = 230
Vac, with switch (40) closed.
YES
♦ Check connections between switch (40) and
power board (45).
♦ Check power cord and plug.
♦ Check switch (40).
♦ Check the mains voltage conditions.
The circuits in this section of the power board (45) are
directly connected to the mains potential and therefore
dangerous. To measure use insulated tools and take the
POWER SUPPLY TEST.
□ Power board (45), R32 SHUNT(-) terminal (in proximity
of inductor L3) and dissipater DISS2(+), voltage = +320
Vdc approximately, after switch (40) closing; +395 Vdc,
after start-up phase, 5 s approximately (Vdc across
DC-capacitors).
YES
♦ If the voltage is not present, turn off the power
source and check the R32 SHUNT(-) terminal
and DISS2(+) dissipater are not in short
circuit. If the case look for the short circuit
cause between the following components:
boost converter (U5, U7), flyback circuit (U3,
Correct?
YES
Correct?
NO
WARNING
necessary precautions.
Correct?
NO
EN
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