LG LTM9000W Service Manual page 18

F. HIGH VOLTAGE TRANSFORMER REMOVAL
1) Discharge the high voltage capacitor.
2) Disconnect the leadwire from magnetron, high voltage
transformer, and capacitor.
3) Remove the screw holding the high voltage transformer to
the baseplate.
G. FAN MOTOR ASSEMBLY REMOVAL
1) Discharge the high voltage capacitor.
2) Disconnect the leadwire from fan motor and high voltage
capacitor.
3) Remove the two screws holding the the suction guide
ASSEMBLY to the oven cavity.
4) Remove the two screws holding the fan motor ASSEMBLY
to the suction guide ASSEMBLY.
H. HIGH VOLTAGE CAPACITOR AND DIODE REMOVAL
1) Discharge the high voltage capacitor.
2) Disconnect the leadwire from fan motor and high voltage
capacitor.
3) Remove the screw holding the suction guide ASSEMBLY to
the oven cavity.
4) Remove the screw holding the high voltage capacitor
bracket and remove the high voltage diode earth screw.
H.V.
Transformer
Fan Motor
Assembly
Figures 12
I. INTERLOCK SYSTEM
1) INTERLOCK MECHANISM
The door lock mechanism is a device which has been
specially designed to eliminate completely microwave
activity when the door is opened during cooking and thus
to prevent the danger resulting from the microwave
leakage.
2) MOUNTING OF THE PRIMARY/MONITOR/
SECONDARY SWITCHES TO THE LATCH BOARD
3) INSTALLATION AND ADJUSTMENT OF THE LATCH
BOARD TO THE OVEN ASSEMBLY
• Mount the latch board to the oven assembly.
• Adjust the latch board in the arrow direction so that oven
door will not have any play in it when the door is closed.
• Tighten the mounting screw.
• Check for play in the door by pushing the door
release button. Door movement should be less than
0.5 mm. (1/64 inch)
Don't push the door release button while making this
adjustment. Make sure that the latch moves smoothly after
adjustment is completed and that the screws are tight.
Make sure the primary, monitor, and secondary switches
operate properly by following the continuity test
procedure.
ADJUSTMENT
DIRECTION
Suction
Guide
H.V.
Capacitor
H.V.
Diode
-17-
SECONDARY
SWITCH
MONITOR
SWITCH
PRIMARY
SWITCH
Figures 13