Firepower TIG 160S, Service Manual

Page: 53 / 84

TROUBLESHOOTING FIREPOWER 160 S
Manual 0-5371 6-13 Troubleshooting
6.10 Troubleshooting Circuit Diagram
V1: Details refer to 6.09 A, B and D waveforms.
V2: Details refer to 6.09 C and E waveforms.
Art # A-09897_AE
G
D
S
G
D
S
PU
T
230V
AC
/1
15VA
C
50
/6
0H
z
G
D S
AC
OU
TA
CO
UT
DC
-
DC
+
RED
BLACK
J2-1
J2-2
J2-3
J2-4
J2-5
J2-6
J2-7
J2-8
-24V
GND
+15V
IGBT Driver A
IGBT Driver B
GND
Over Current Signal
Over Current Signal
J3-1
J3-2
J3-3
J3-4
J3-5
J3-6
J3-7
J3-8
J4
-6
J4
-5
J4
-4
J4
-3
J4
-2
J4
-1
+15V
PO
T
WI
PE
R
Fa
ul
t
Pr
oc
ess
Sw
itch
GN
D
N/
A
J7
-2
J7
-1
J8
-1
J8
-2
GN
D
-2
4V
J7-
3
+1
5V
GN
D
RE
D
BL
AC
K
J9-1
J9-2 J1-2
J1-1
RED
Ma
in
Power
PC
B1
Co
ntro
l PC
B2
Front Panel PCB3
J6-1
J6-2
J6-3
J6-4
GND
+15V
-15V
Current Feedback
3J
7J
8JJ6
J1
J4
CO
NN
EC
TO
R
LA
YO
UT
DI
AG
RA
M
JC
OT
TU
O
MI
BF
I
JF
ON
1
VR
D
ON
OF
F
FA
N
PF
C
CI
RC
UIT
MB
IN
WV
IN
RED
BLACK
J1
1-5
J11
-4 J11
-3 J1
1-2
J11-
1
ST
IC
K
LI
FT
TI
G
PR
OC
ESS
SE
LE
CTO
R
CURRE
NT
CO
NT
RO
L
FA
UL
T
AC
PO
S
NE
G
+ -
BLACK
WV
IN
FJ
OT
JC
MB
IN
IM
OU
T
IF
B
RED
YELLOW
GRAY
WHITE
J5-1
J5-2
J5
JC
IN
115V
AC
ST
IC
K
--1
.5
VD
C
115V
AC
LI
FT
TI
G
--4
.5
VDC
230V
AC
--0
.5
VD
C
C1
Current Sensor
75
ć
75
ć
PTC
VR