Troubleshooting & repair, Caution – Lincoln Electric WELDANPOWER SVM 113-A User Manual
Page 84
IDLER PRINTED CIRCUIT BOARD REMOVAL AND REPLACEMENT
(continued)
FIGURE F.19 - IDLER P.C. CIRCUIT BOARD
PROCEDURE
Before starting the following procedure, refer
to the topic "PC Board Troubleshooting
Procedures" at the beginning of this section.
1. Remove the engine spark plug wire to pre-
vent accidental kickback or starting.
2. With the 5/16" nut driver, remove the 8
sheet metal screws that hold the top cover
in place. Remove the cover.
3. With the 5/16" nut driver and 5/16" wrench,
remove the 6 sheet metal screws that hold
the control panel in place. Carefully move
the control panel aside as far as the leads
will allow.
4. Locate and remove the two molex plugs
connected to the idler P.C. board. See
Figure F.19.
5. With the 1/4" nut driver, remove the 3 P.C.
board mounting screws.
6. Carefully remove the board.
Be sure to follow the recommended static-free
methods for handling printed circuit boards.
Failure to do so can result in permanent dam-
age to the equipment.
6. Replace the old idler P.C. board. Mount the
new board with the 3 mounting screws and
1/4" nut driver.
7. Replace the control panel and tighten the 6
sheet metal screws with the 5/16" nut dri-
ver and 5/16" wrench.
8. Replace the top cover of the control box
and tighten the 8 sheet metal screws with
the 5/16" nut driver.
TROUBLESHOOTING & REPAIR
F-46
F-46
WELDANPOWER 125
CAUTION
M17578
WP125 IDLER
J1
J2
MOUNTING
SCREWS
MOUNTING
SCREW