Control/Auxiliary Power Board Pc1 − Auxiliary Power Circuit - Red-D-Arc EXTREME 360 Technical Manual

6-13. Control/Auxiliary Power Board PC1 − Auxiliary Power Circuit
1
2
3
4
.
Pin sequence of IC chips.
Y Read and follow safety information
in Section 6-1 before proceeding.
Y Wear an earth grounded wrist strap
when performing
checks. Remove wrist strap before
performing any checks or proce-
dures with power applied to the ma-
chine.
.
Remove all plugs from PC1 before
testing.
1 Control Board PC1
2 Receptacle RC2
TM-229 409 Page 26
PRE-POWER CHECKS
8
7
6
5
3 Receptacle RC3
4 Receptacle RC5
5 IGBT Gate Drive IC U1
pre-power
6 IGBT Gate Drive IC U4
7 IGBT Gate Drive IC U5
8 Diode D37
9 Diode D38
10 Diode D39
11 Diode D42
12 Diode D43
13 Diode D44
5 1 8 11 6
3
Test Equipment Needed:
Unplug all connections to PC1.
Visually inspect PC1 for damage.
Check all measurements for PC1 Auxiliary
Power, Pre-Regulator and Inverter Control
(see Sections 6-14 thru 6-18).
If all measurements passed, continue to
the end of the pre-power flowchart (see
Section 6-2).
.
If any measurements failed, replace
PC1.
7 4
13
12
9
10
2
Ref. 217 184-F / 907 161
Extreme 360