Troubleshooting & repair, Voltage board transformer test – Lincoln Electric NA-5S User Manual
Page 99
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F-46
TROUBLESHOOTING & REPAIR
F-46
TEST PROCEDURE
1. Remove all input power to the NA-5.
2. Using the 5/16" nutdriver open the
control box PC board access door.
3. Locate the voltage board. See
Figure F.3
4. Remove the molex type plugs from
the voltage board.
5. Using the phillips head screwdriver
remove the voltage board from the
control box.
6. Locate the transformer and test
points on the voltage board. See
Figure F.4
VOLTAGE BOARD TRANSFORMER TEST
(Continued)
NA-5
FIGURE F.3 VOLTAGE BOARD LOCATION
VOLTAGE
BOARD
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