Thermal Dynamics CUTMASTER 60i Service Manual

CUTMASTER 60i
SERVICE Manual 0-5475
5-14
3. PFC Board Diode Test. Measure between Bridge + and J305-3 (assumes PFC inductors L1 & L2 remain con-
nected.)
GRN/YEL
ORANGE
VIOLET
BLACK
ORANGE
BLACK
CHASSIS
GND
(3Ø ONLY)
+15V PRI
+24V
-15V
+15V
3Ø
1Ø
AC1
AC2
AC3
GND PRI
BRIDGE+
TP21
TP8 TP23
TP22
TP4
ACINSEN
HI LINE
BUS CHK
LO LINE15 UV
+
C303
D301
D303
HS300 HS301
C302
+
C300
C307
+
C306
+
C304
+
C301
D304
D306
D305
D307
1
J305
1
J304
46
13
J303
K300
MOV300 MOV301 MOV302
1
J302
Q301Q300
R300
R303
R301
R302
T300
1
U300
1
U301
+
C305
HS302
1
J301
D300
1
2
5 6
J300
T301
D302
MOV306
MOV304
MOV305
MOV303
E300
-
+
Art # A-13328
a. With meter + lead on BRIDGE + and meter – lead on J305-3 meter on diode scale should read as a diode
in the forward direction, a bit lower resistance than the bridge diodes. about 0.3V to 0.4V on Fluke meter.
b. Reverse the leads, meter - lead on BRIDGE + and meter +lead on J305-3. Meter should show slowly
increasing resistance/voltage (capacitor charging) until meter goes over range.
c. If either or both of these read a short or an open in both directions replace the PFC board.
!
CAUTION
Single phase and 3 phase PFC boards are different, have different
catalog numbers! Using the wrong one may cause it to fail.

Thermal Dynamics CUTMASTER 60i Specifications

General

Brand	Thermal Dynamics
Model	CUTMASTER 60i
Category	Welding System
Language	English