Troubleshooting and repair, Repair procedure, Trigger transformer replacement – Lincoln Electric LN-8 SVM132-A User Manual
Page 81
F-31
TROUBLESHOOTING AND REPAIR
F-31
REPAIR PROCEDURE
1. Using the 5/16 in. nutdriver
remove the screws from the left
side cover assembly.
2. Remove the Relay PC board as
described in the PC Board
Replacement procedure.
3. Disconnect the Molex plug for the
trigger transformer from the bottom
of the relay board. Refer to Figure
F.9.
4. Using a flat blade screwdriver and
needlenose pliers, remove the trig-
ger transformer and insulation
sheet from the case.
5. Place the insulation sheet and new
trigger transformer into the case
and install the screws and nuts
that secure the transformer in
place.
6. Install the Relay PC board as
described in the PC Board
Replacement procedure.
7. Attach the trigger transformer
Molex plug to the bottom of the
relay board.
8. Install the screws that secure the
left side cover assembly.
LN-8
TRIGGER TRANSFORMER REPLACEMENT
(continued)
FIGURE F.9 – TRIGGER TRANSFORMER REMOVAL
INSULATION
SHEET
TRIGGER
TRANSFORMER
RELAY
PC BOARD
ROUNDHEAD
SCREW
NUT