Lincoln Electric POWER WAVE SVM156-A Service Manual page 106

F-60
CONTROL, FEED HEAD, OR VOLTAGE SENSE PC BOARD
REMOVAL AND REPLACEMENT (CONTINUED)
FIGURE F.23 – VOLTAGE SENSE BOARD REMOVAL AND REPLACEMENT
9. Tilt back the rear of the control box to
access the PC board mounting nuts. Using
the 3/8" nut driver, remove the self-locking
mounting nuts from the Control and Feed
Head Boards.
boards.
10. Remove plugs J1 and J2 from the Voltage
Sense Board. See Figure F.23.
11. Using the needle-nose pliers, carefully
pinch the three plastic standoffs. Remove
the Voltage Sense Board.
TROUBLESHOOTING & REPAIR
COMPARTMENT
COVER
CONTROL
BOARD
VOLTAGE
SENSE
BOARD
Carefully remove the
POWER WAVE 455/R
POWER
BOARD
REPLACEMENT PROCEDURE
1. Install either the Control or the Feed Head
Board to the back of the control box with the
self-locking nuts. Use the 3/8" nut driver.
2. Connect the molex plugs to the Control
Board and the Feed Head Board. Be sure
the lead harnesses are securely and proper-
ly positioned.
3. Secure the rear of the control box in place
using two screws and the 3/8" nut driver.
F-60