Lincoln Electric INVERTEC V275-S Service Manual page 52

F-22
TEST PROCEDURE
1. Remove input power to the V275-S
machine.
2. Using a 5/16" nut driver, remove the case
wraparound cover.
3.
Perform the
Procedure detailed earlier in this section.
4. Locate the input rectifier and associated
leads. See Figure F.6.
5. Carefully remove the silicone sealant
from output lead terminals 207, 207A,
amp 209. See Figure F.6.
TROUBLESHOOTING & REPAIR
INPUT RECTIFIER TEST (CONTINUED)
Figure F.5 - Terminal Schematic
-
C
Capacitor Discharge
Figure F.6 - Input Rectifier
Allen
Screw
C B
L1
A
B
6. Using a phillips head screwdriver,
remove leads 207, 207A, and 209 from
the input rectifier.
7. Use the analog ohmmeter to perform the
tests detailed in Table F.2.
Wiring Diagram.
8. Visually inspect the three MOV'S for
damage (TP1,TP2,TP3). Replace if nec-
essary.
A
L3
L2
V275-S
+
See the
Allen
Screw
F-22