LG MP-3297IXC Service Manual page 25

K. 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
ADJUSTMENT
DIRECTION
Right
MONITOR
SWITCH
PRIMARY
SWITCH
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.
L. RELAY PCB ASSEMBLY
1) Disconnect the leadwire from relay PCB.
2) Remove the two screws holding relay PCB assembly.
3) Remove the relay PCB assembly from cavity
assembly.
4) Remove two screws holding relay PCB.
5) Remove the relay PCB from relay PCB support.
Relay PCB
LGE Internal Use Only
Left
SECONDARY
SWITCH
Relay PCB Support
5-7
M. UPPER SHEATH HEATER REMOVAL
1) Remove three hex nuts holding the sheath heater.
2) Remove gasket and bracket holding heater.
3) Remove the thermister.
4) Remove the sheath heater from the oven cavity.
Nut
Upper Heater
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Nut
Bracket
Gasket
Insulator-U
Thermistor