LG LRM9020 Service Manual

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9. DISASSEMBLY INSTRUCTIONS

IMPORTANT NOTES:

UNIT MUST BE DISCONNECTED FROM ELECTRICAL
OUTLET WHEN MAKING REPAIRS, RE-PLACEMENTS,
ADJUSTMENTS AND CONTINUITY CHECKS. WAIT AT
LEAST ONE MINUTE, UNTIL THE HIGH VOLTAGE
CAPACITOR IN THE HIGH VOLTAGE POWER
SUPPLY HAS FULLY DISCHARGED. THE CAPACITOR
SHOULD BE DISCHARGED BY USING INSULATED
WIRE - I.E. TEST PROBE CONNECTED TO 10KOHM
RESISTOR IN SERIES TO GROUND. WHEN
RECONNECTING THE WIRE LEADS TO ANY PART,
MAKE SURE THE WIRING CONNECTIONS AND LEAD
COLORS ARE CORRECTLY MATCHED ACCORDING
TO THE OVERALL CIRCUIT DIAGRAM. (ESPECIALLY
SWITCHES AND HIGH VOLTAGE CIRCUIT.)

A. REMOVING OUT CASE (Figures 7)

(1) Remove four screws from the rear section.
(2) Remove one screw from the side section.
(3) Push the outer case back about 1 inch (3cm).
(4) Lift the case from the set.

B. REMOVING TOASTER ASSEMBLY(Figure 8)

CAUTION: BE CAREFUL HOT SURFACE!

AFTER TOASTING, ENTIRE TOASTER’S
SURFACES ARE VERY HOT. BEFORE
SERVICING, COOL DOWN THE TOASTER

PARTS ENOUGH NOT TO GET BURNT.
(1) Open the door.
(2) Remove 2 screws, holding the toaster.
(3) Disconnect the 2 lead wires from connectors(CN2,CN3).
(4) Disconnect the wires at the secondary interlock switch

and wires at the toaster door switch.

(5) Disconnect the wires from the toaster thermostat and

wires at the Toaster Assembly.

(6) Lift up and pull out Toaster Assembly carefully from the

cavity.

Lift up and pull out toaster assembly

securing
screw

Remove screw

Figures 8

Figure 7

C. DOOR GROSS ASSEMBLY REMOVAL

(1) Open the door.
(2) Remove the choke cover cap very carefully with a flat-blade

screwdriver.

CAUTION : Be careful not to damage door seal plate by

screwdriver.

(3) Lift up and push the door.

NOTE:

1. After replacing the door, be sure to check that the primary
switch, monitor switch, and secondary switch operate
normally.

2. After replacing the door, check for microwave energy leakage
with a survey meter. Microwave energy must be below the
limit of 5 mW/cm.sq. (with a 275 ml water load)

3. When mounting the door assembly to the oven assembly, be
sure to adjust the door assembly parallel to the chassis. Also
adjust so the door has no play between the inner door surface
and oven frame assembly. If the door assembly is not
mounted properly, microwaves may leak from the clearance
between the door and the oven.

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Remove choke cover cap

Remove Door

Figure 9