SECTION 6
PCM-875A Plasmarc System
Troubleshooting
6-13
230V Schematic Part 2
V
P5-5
0.047uf
660V
PCB5
V
P1-3
V
P1-2
P1-6
V
(-)
(+)
GND 5
C23
C14
X2
T3
X1
2500 PF,15KV
C13
H2
1
X1
TB2
H1
T5
SG
2
X2
TORCH
2500 PF,15KV
WORK
L2
.82UF 630VDC
P.A.
L3
T3
K1
R13
C20
P1-1
V
K1
T2
T1
K1
C21
L1
.022UF, 1KV
GND 3
PILOT
ARC
330K ,1W
.022UF
P2
-1
3
P2
-1
2
GND 2
TB1-2
GND 4
.01UF,250 VAC
H1
.01UF
1KV
C11
TB1-1
.01UF
C12
1KV
H2
C9
115 VAC
V
V
250VAC
K1
B
A
SHIELD
P5-1
P5-2
V
C18
V
P5-6
V
PL2
C17
250VAC
.022UF
4T
L3
-
+
TORCH SWITCH
J1
V
2
V
1
SIGNAL TO CNC
VOLTAGE DIVIDER
SIGNAL TO CNC
(CONTROL BOARD)
PCB1
5
P6-2
P2-2
P2-3
SOL1
V
V
V
P1-12
P1-11
P6-1
V
1
V
V
1
NO
T
US
E
D O
N
C
O
N
S
O
L
E
S
2
1
2
75mA
60V
ZD1
S3
FS
2
4
05
58003357
0558003356
&
P2-3
P2-4
V
V
V
V
P6
-9
P6
-7
S2
2
6
1
3
(SEE CHART)
TB4
1
2
3
4
(+)
(-)
5
6
TB4-6
TB4-5
TB4-4
TB4-3
TB4-2
TB4-1
}
FROM CNC
}
ARC ON
START SIGNAL
}
1
2
3
