The Start Command Produces No Effect - Cebora PLASMA PROF 164 HQC Service Manual

CEBORA S.p.A.

3.3.4 - The start command produces no effect.

ERROR CODE TEST.
When turned on, after the start-up phase, displays (B) and (C) on the Power Source and
displays (F) and (M) on the Gas Console indicate an alarm situation.
♦ See Error codes and alarm signals, par. 3.4.
START COMMAND TEST.
Remote board (59), connector J2, terminals 1(+) and 9(-) = 0 Vdc with start command active;
+24 Vdc with command not active.
♦ Check the wiring between J3 remote board (59) and J1 control board (38).
♦ Check on control board (38), connector J1, terminals 9(+) - 10(-) voltage = +1
Vdc with start command active (0 Vdc with start command not active). If
incorrect, with Power Source off temporarily disconnect connector J1 on control
board (38) and check the resistance on terminals 9 and 10 of J1 on control board
(38). Correct value = coupling of 2 diodes in both measurement directions. If
incorrect, replace control board (38). If correct, replace remote board (59).
♦ Replace the remote (59) and/or control (38) boards.
REMOTE BOARD (59) POWER SUPPLY TEST.
With Power Source off, temporarily disconnect connector J1 on control board (38).
Power up the Power Source again and check for the following voltages on remote board (59):
J3 terminal 9(+) and J2 terminal 9(-) = approximately +25 Vdc;
J3 terminal 3(+) and J2 terminal 9(-) = approximately +12 Vdc.
♦ Check the wiring between J5 remote board (59), and service transformer (56).
♦ Make sure on remote board (59), connector J5, terminals 1 and 2 = 230 Vac. If
incorrect check the wiring between J5 remote board (59), service transformer (56)
service voltage change terminal board and switch (39). If correct, replace remote
board (59).
♦ Check the wiring between J2 remote board (59) and connector (4) on the Power Source.
♦ Check the wiring between J3 remote board (59) and J1 control board (38).
♦ Check the wiring between connector (4) on the Power Source and the device actuator of the
start command (switch, relay, etc. of the system).
♦ Replace the remote board (59).
3.302.218
Correct?
NO
Correct?
NO
Correct?
YES
YES
YES
NO
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9/8/2006