Troubleshooting & repair, Plug p52, Plug p56 – Lincoln Electric INVERTEC V350-PRO SVM152-A User Manual
Page 72: Auxiliary transformer test (continued), Lead 41a lead 54, Test procedure
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TROUBLESHOOTING & REPAIR
F-34
F-34
V350-PRO
AUXILIARY TRANSFORMER TEST (continued)
TEST PROCEDURE
1. Remove input power to the V350-PRO.
2. Using a 5/16” nut driver, remove the case
wraparound cover.
3. Perform the Input Capacitor Discharge
Procedure detailed earlier in this section.
4.
Locate the auxiliary transformer. See Figure
F.8.
5.
Locate the secondary leads and plugs P52
and P56. See Figure F.8 and F.9.
FIGURE F.8 Auxiliary Transformer
FIGURE F.9 Plug Lead Connections Viewed From Transformer Lead Side of Plug
W
AR
NIN
G
RE
M
OT
E
PO
W
ER
OF
F
ON
A
A
M
P
S
A
V
V
O
LT
S
W
ELD
TERMINALS
SELECT
O
U
TP
U
T
LIN
COLN
ELECTR
IC
INVER
TEC V350-PR
O
Auxiliary
Transformer
Secondary Lead
Plugs P52 and P56
LEAD
541
LEAD
31
LEAD
24
LEAD
42
LEAD
532
PLUG P52
LEAD
41A
LEAD
54
PLUG P56
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