The Start Button Produces No Effect; Some Commands From Connector H Not Operating - Cebora SYNSTAR 270 T Manual De Reparaciones

3�3�4

The START button produces no effect

The start signal may be supplied to the power source through central adapter (3) or through connector (8).
Because both circuits in panel board (47) are connected in parallel, only one of the two signals is enough to start the
power source.
START CONTROL TEST
□ Panel board (47), terminals J9-A(+) and J9-B(-) = 0 VDC with start button pressed, +9 VDC approximately with
button released (with button connected to central adapter (3) or to connector (8)).
□ Panel board (47), connector J17, terminals 3(+) e 4(-) = 0 VDC with start button pressed, +9 VDC approximately with
button released (with button connected to central adaptor (3) or to connector (8)).
Correct?
■ Check the components fitted to the start line between J9, J17 and Q2 on panel board (47) are intact (see connector
map, section 5.4).
EN
■ Replace panel board (47).
3�3�5

Some commands from connector H not operating

□ Connector (8), signals are shown in table, with power source powered and connector (8) free (no accessory con-
nected to (8)).
1(+) - 8(-)
2(+) - 3(-)
4(+) - 5(-)
6 - 9
7(+) - 3(-),
10(+) - 3(-)
36
NO
YES
output for push-pull motor
potentiometer slide
start command
Arc-On signal output
connected accessory recognition si-
gnal
potentiometer power supply
NOTE
♦
Check the wiring between J9 of panel board (47), central
adaptor (3) and torch pushbutton.
♦
Check the wiring between J17 of panel board (47) and
connector (8).
♦
Check the power supply voltages of panel board (47),
if necessary carrying out the PANEL BOARD POWER
SUPPLY TEST (47), in section 3.3.1.
♦
Replace panel board (47).
Fig. 3.3.5
+12 VDC approx. (no load, capacitive
voltage).
+3.3 VDC
+9 VDC
>Mohm
+3.3 VDC
+3.3 VDC
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