Lincoln Electric PRO-CUT 55 SVM140-A - Manual (Page 62)

Retur
n to Section TOC
Retur
n to Section TOC
Retur
n to Section TOC
Retur
n to Section TOC
Retur
n to Master TOC
Retur
n to Master TOC
Retur
n to Master TOC
Retur
n to Master TOC
TROUBLESHOOTING & REPAIR
F-25 F-25
PRO-CUT 55
OUTPUT POWER BOARD RESISTANCE TEST (continued)
FIGURE F.4 – OUTPUT POWER BOARD LEAD LOCATIONS
TEST PROCEDURE
1. Remove input power to the Pro-Cut 55
machine.
2. Perform the Input Filter Capacitor
Discharge Procedure detailed earlier in this
section.
3. Remove the torch assembly from the
machine.
4. Remove leads X4, X2, B21, X20, X40 and
plugs J33 and J32 from the output power
board. See Figure F.4.
5. Using the analog ohmmeter, perform the
resistance checks per Table F.4.
G3326 - [ ] PRO-CUT 55 OUTPIUT
x40
J33
X4
(B11)
X2
(B12)
R5
Test
Point
(G3326-1)
(only)
B21
J32
x20
J31
B1
B2
R5
D30
Test Point
(G3326-2,3)