Red-D-Arc EXTREME 360, Technical Manual

Page: 30 / 68

PRE-POWER CHECKS
TM-229 409 Page 26 Extreme 360
6-13. Control/Auxiliary Power Board PC1 − Auxiliary Power Circuit
Ref. 217 184-F / 907 161
Y Read and follow safety information
in Section 6-1 before proceeding.
Y Wear an earth grounded wrist strap
when performing pre-power
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
3 Receptacle RC3
4 Receptacle RC5
5 IGBT Gate Drive IC U1
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
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.
1
3
2
4
Test Equipment Needed:
5 8
9
10
11
12
13
6 7
1
2
3
4
8
7
6
5
.
Pin sequence of IC chips.