Fan (44) Stopped; Control Panel Doesn't Show Correct Values - Cebora SYNSTAR 200 M Manual De Servicio

D3, D4, etc.), DC-capacitors, inverter igbt
and diodes ((U8, U9, U10, U11, U12, U13,
D13, D14 etc.).
♦ If the voltage remains at values much low-
er than 320 Vdc, check the precharge circuit
(PTC1, relay RL1, etc.).
♦ If the voltage remains at +320 Vdc, check
the boost converter circuits (U5, U7, Q5, Q6,
D11, D12, etc.) and the voltages on TP11 and
TP12 of power board (45), as indicated in Fig.
2.3.2 (boost converter power supply circuits).
♦ Replace power board (45).
POWER BOARD (45) POWER SUPPLY TEST.
□ Power board (45), test points TP11(+), TP12(+) and R32
SHUNT terminal or TP13(-) = voltages as indicated in
Fig. 2.3.2 (boost converter circuits power supply).
□ Power board (45), connectors J2 and J3 = voltages as
indicated in Fig. 2.3.2 (inverter circuits power supply).
YES
♦ With the power source off, temporarily dis-
connect connectors J3 and J7 from power
board (45). Power up the power source and
repeat the measures on power board (45). If
EN
not correct, locate the faulty components, on
power board (45), based on the diagram in
Fig. 2.3.2 and replace them. If correct search
for the anomaly cause in the fan (44) or in the
panel board (48).
♦ Replace power board (45).
PANEL BOARD (48) POWER SUPPLY TEST.
□ Panel board (48), connector J1, terminals 1(+) and 2(-) =
+15 Vdc approx., with switch (40) closed.
□ Panel board (48), connector J2(+) and connector J1, ter-
minal 2(-) = +3,3 Vdc, with switch (40) closed.
YES
♦ Check the wiring between J7 power board
(45) and J1 panel board (48).
♦ If the uncorrected voltage is the +3,3 Vdc
search for anomalies in the panel board (48) power supply circuits (U1 etc.) (see connec-
tor map, par. 5.5).
♦ Replace the power (45) and/or panel (48)
boards.
■ Replace the power (45) and/or panel (48) boards.
22
Correct?
NO
Correct?
NO
3.3.2

Fan (44) stopped.

FAN (44) TEST.
□ Power board (45), connector J3, terminals 1(+) - 2(-) =
+14 Vdc approximately, with switch (40) closed.
NO Correct?
♦ Check wiring between fan (44) and J3 on
power board (45).
♦ Make sure that there are no mechanical im-
pediments blocking the fan.
♦ Replace the fan (44).
■ Temporarily disconnect J3 from power board (45) and
repeat the test voltage on J3. If correct check that the
winding of the fan (44) is not in short circuit. If not
correct, check integrity of the resistor NTC1 on power
board (45). Correct value at ambient temperature = 5
ohm approximately.
■ Check the supply voltages of the power board (45),
in particular the +15V_ISO voltage performing,
if necessary, the POWER BOARD (45) POWER
SUPPLY TEST, of par. 3.3.1.
■ Replace power board (45) and/or fan (44).
3.3.3

Control panel doesn't show correct values.

SELF TEST.
□ Upon start-up, on control panel display A shows the
general information page:
− power source article number;
− power source firmware version;
− firmware issue date;
− synergic curves version.
□ After 2 s, display A shows the main menu page:
− synergic curve set;
− welding current (A) and wire speed expressed in
meter for minute;
− arc voltage (V) and suggested thickness expressed
in millimetres.
YES
3302316/A