CIGWELD WeldSkill 4R Wirefeeder - 6.13 WELDSKILL 250 MIG POWER SOURCE CIRCUIT DIAGRAM

TROUBLESHOOTING WELDSKILL 250, 350
Manual 0-5186 6-19 Troubleshooting
6.13 WELDSKILL 250 MIG POWER SOURCE CIRCUIT DIAGRAM
20V20V
DCL
V1 V2
V3 V4
R1
100/40W
C1
100n/1KV
KM-1
KM-2
S1
TC
FU1 3A
-
+
30V
FS
FU2 8A
18
17
1
2
CN5
1 2 3
CN1
1 2 3 4
CN3
Welding current potentiometer
5K
Power indicator
M
_
Spot
R2
0.5Ω/30W
36V
KM
Spot timer
100K
0
19
28
29
30
30
32
26
LED1
VR1
VR2
Thermostat1
I.P.S
TC
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
Mo tor power
2
8 9 10 11 6 7 20A 21A
2172
15
25
24
345
22D
13 14
22C
22A
22B21B
21C
21D
20B
20C
20D
16
1
0
Burn back
100K
VR3
Spot switch/4T
4T
12
5364
Spot switch
+
22000uF
+
22000uF
+
22000uF
+
22000uF
0V
240V
R3
15R/50W
KM-5B
Thermostat2
27
35 36 37
240V
C2
220V
1 2 3
4
22
11
4433
5
6
66
55
7
8
88
77
TR1
SWITCH-12
31
31
S4
11
12 10
22B40
21C22C
S4
3
44
45
5
46
2
13
46 47
41
21B
KM-4
23
Gas valve
S3
S4
8
79
YV
20D 43
36V
42
20D25
CONTROL PCB
Art # A-09926_AB