Lincoln Electric NA-5N Service Manual page 127

F-74
DIGITAL METER AND METER PC BOARD REMOVAL AND REPLACEMENT
METER PC BOARD REMOVAL
PROCEDURE
1. Remove input power to the NA-5.
2. Using the 5/16" nutdriver open the
control box PC board access door.
3. Locate and unplug the meter PC
board that is to be removed. See
Figure F.11
4. Using the 5/16" nutdriver remove the
four PC board mounting nuts. See
Figure F.11
METER BOARD
FIGURE F.11 METER PC BOARD, MOUNTING NUTS AND PLUG
TROUBLESHOOTING & REPAIR
SPEED METER BOARD
MOUNTING
NUTS
NA-5
5. Carefully remove the meter PC
board.
Note insulation placement for reassem-
bly. Also make sure the plug on the
back of the PC board plugs into the
prongs on the meter when you
reassemble.
PC BOARD
PLUG PRONGS
F-74