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COMPONENTS
RELAY 1,4, OF P.C.B
(Disconnect the 7 pin
connector from P.C.B)
See Schematic Dagram on
page 11)
RY1 : Turn Table,
Fan Motor,
Oven Lamp
RY4 : Heater Moving Motor
RELAY 4, 5 OF P.C.B
(Wire leads removed.)
RY3 : Grill
RY2 : Microwave
KEY PAD
SENSOR
(Wire leads removed)
NOTE : A MICROWAVE ENERGY LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS
SERVICED FOR ANY REASON.
MAKE SURE THE WIRE LEADS ARE CORRECT POSITION.
WHEN REMOVING THE WIRE LEAD FROM THE PARTS, BE SURE TO GRASP THE
CONNECTOR, NOT THE WIRES.
TEST PROCEDURE
1
CN2
3
5
7
Relay 1
Relay 2
Tact S/W
1
2
3
4
5
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21
22
23
24
Measure the resistance.
connector
Relay 4
Relay 3
P.C.B
1
2
3
4
5
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21
22
23
24
BK
WH
Shield wire
RD
24
RESULTS
Cooking Start
OFF
Cooking Start
OFF
Check continuity between
switch terminals, by pressing an
appropriate pad on key board.
The contacts assignment of the
respective pads on the key
board is as shown left figures.
Port
Resistance
1 and 2
Approx.1MΩ
1 and 3
Approx.5KΩ
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