Cebora 965, Service Manual, Page: 9 / 24

CEBORA S.p.A.
9
Correct?
YES
NO
♦
Check the wiring between switch (29) and control board (6).
♦
Check integrity of fuses on control board (6), considering that:
-
F1 is inserted in the supply circuit for torch start button insulated circuit.
For checking performs START COMMAND TEST, par. 3.3.3.
- F2 is inserted in the control board (6) supply circuit. In this case replace control
board (6).
- F3 is inserted in the supply circuit for control board (6) service transformer. In
this case replace service transformer on control board (6) or control board (6)
complete.
♦
Check the mains voltage conditions.
♦
Replace control board (6).
♦
Replace lamp (38).
♦
Replace control board (6).
3.3.2 - Power source powered, lamp (38) lit, fan (39) stopped.
FAN (39) TEST.
Correct?
‰
Fan (39) terminals = approximately 230 Vac, with switch (29) closed, both with mains at 230
and at 400 Vac.
YES
NO
♦
Check the wiring between terminals J8 and J9 of control board (6) and fan (39).
♦
Check the presence of control board supply voltages, performing the CONTROL
BOARD (6) POWER SUPPLY TEST in par. 3.3.1 if necessary.
♦
With power source off, temporarily disconnect terminals J8 and J9 on control
board (6) and make sure resistance on the terminals of the fan (39) disconnected
from J8 and J9. Corrected value = approximately 60 ohm. If 0 ohm (short circuit )
replace fan (39) and control board (6).
♦
Replace control board (6).
♦
Make sure that there are no mechanical impediments blocking the fan (39).
♦
With power source off, temporarily disconnect terminals J8 and J9 on control board (6) and
make sure resistance on the terminals of the fan (39) disconnected from J8 and J9. Corrected
value = approximately 60 ohm. If >Mohm (circuit interrupted) replace fan (39).
♦
Replace the fan (39).
3.302.173 28/07/04