CIGWELD WeldSkill 4R Wirefeeder - Weldskill 350 Mig Power Source Circuit Diagram

Troubleshooting 6-20 Manual 0-5186
WELDSKILL 250, 350 TROUBLESHOOTING
6.14 WELDSKILL 350 MIG POWER SOURCE CIRCUIT DIAGRAM
20V 20V
DCL
V1 V4
V2 V3 V5 V6
R1
100/40W
C1
100n/1KV
KM-1
KM-2
KM-3
S1
TC
415V
FU1 3A
- +
27V
FS
FU2 8A
18
17
KM-4
1
2
CN5
1 2 3
CN1
1 2 3 4
CN3
Power indicator
Spot
36V
KM
Spot timer
100K
0V
19
23
28
29
31
31
32
26
LED1
VR2
Th ermo stat1
I.P.S
TC
Gas valve
S3
33
1 2 3 4
CN4
1 2
CN2
1 2 3 4 5 6 7 8
CN6
1
2
3
CN8
1
2
3
CN9
Over heat
LED2
Gun
T.S
1
2
3
4
CN7
17 18
Motor power
2
8 9 10 11 6 7 20A 21A
2172
15
25
24
345
22D
13 14
22C
22A
22B21B
21C
20B
20C
20D
16
1
0
Burn back
100K
VR3
Spot switch/4T
4T
12
5364
Spot switch
30
415V
415V 415V
Thermo stat2
27
21D
220V
30
W V
U
C1 C2 C3 C4
C
C5
C6 C7
S1 S2
C8
C9
B1 B2 B3 B4
B
B5
B6 B7 B8 B9
A1 A2 A3 A4
A
A5
A6 A7 A8 A9
TR1
SWITCH
S4
8
79
YV
20D43
M
_
R2
0.5Ω/30W
S4-4
11
12 10
22B
40
Welding cu rrent potentiometer
5K
VR1
21C22C
S4
3 44 45
5
46
2
13
36V
42
46
47
41
21B
20D25
CONTROL PCB
Art # A-09927_AB