Thermal Dynamics CUTMASTER 60i Service Manual

CUTMASTER 60i
Manual 0-5475 SERVICE
5-13
Details:
a. Meter + lead on GND_PRI and - lead to each of the 3 AC terminals. Normally it should measure as one
diode in the forward direction (about 0.4V to 0.5V with Fluke meter).
b. Reversing the leads, + on AC, - on GND_PRI, it should measure higher with voltage/resistance increas-
ing (charging a capacitor).
c. Now repeat the measurement for the terminal to the right of BRIDGE + with the leads as follows: Me-
ter – lead on the terminal to the right of BRIDGE + and the +lead on each AC terminal normal should
measure as one diode in the forward direction (about 0.4V to 0.5V with Fluke meter).
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-13327
d. Reversing the leads, - lead on each of the AC terminals and + lead on the terminal to the right of BRIDGE
+, should measure higher with voltage/resistance increasing (charging a capacitor).
If any of these read the same in either direction, high (open) or low or near zero then remove the Bias board
and measure the bridge separately. If results are the same then replace the bridge rectifier.

Thermal Dynamics CUTMASTER 60i Specifications

General

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