Start
Enter
Popcorn
Clock
Light
Add 30
Stop/
Clear
Manual
Cook
Vent
N.C
N.C
Kitchen
Timer
6
7
5
1
2
3
4
Measure the resistance between terminal
pins of connector KEY CONNECTOR.
NOTE:
When reconnecting the FPC connector,
make sure that the holes on the FPC
connector are properly engaged with hooks
on the plastic fastener.
MATRIX CIRCUIT FOR
TOUCH KEY BOARD
CONNECTOR(KEY CON)
NOTES:
• A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR
ANY REASON.
• MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.
• WHEN REMOVING THE WIRE LEADS FROM THE PARTS,BE SURE TO GRASP THE CONNECTOR,NOT
THE WIRES.
7-18
COMPONENTS
TEST PROCEDURES
RESULTS
TOUCH KEY BOARD
Resistance
value
When
When not
touched
touched
Less than More than
400 ohms 1 mega ohm
1
2
3
4
5
6
7
8
FPC CONNECTOR
Top
KEY MATRIX
