8
R-530ES
KEY UNIT TEST
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. If the display fails to clear when the STOP/CLEAR pad is depressed, first verify the flat ribbon
cable is making good contact, verify that the door sensing switch (stop switch) operates properly;
that is the contacts are closed when the door is closed and open when the door is open. If the door
sensing switch (stop switch) is good, disconnect the flat ribbon cable that connects the key unit
to the control unit and make sure the door sensing switch is closed (either close the door or short
the door sensing switch connecter). Use the Key unit matrix indicated on the control panel
schematic and place a jumper wire between the pins that correspond to the STOP/CLEAR pad
making momentary contact. If the control unit responds by clearing with a beep the key unit is
faulty and must be replaced. If the control unit does not respond, it is a faulty and must be replaced.
If a specific pad does not respond, the above method may be used (after clearing the control unit)
to determine if the control unit or key pad is at fault.
5. Reconnect all leads removed from components during testing.
6. Re-install the outer case (cabinet).
7. Reconnect the power supply cord after the outer case is installed.
8. Run the oven and check all functions.
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
J
G 1 G 2 G 3 G 4 G 5 G 6 G 7 G 8
G 9
G10
G11
G12
G13
G14
Fresh
vegetables
Beverage
Center
Breakfast Lunch
Popcorn
Snacks
From the
Pantry
Start
Touch On
Fish
Seafood
Power
Level
Keep
Warm
Plus
15
Minute
Recipes
Defrost
Center
Custom
Help
Baked
potatoes
Sensor
reheat
Minute
Plus
Vegetables
Rice
1
6
2
7
3
8
4
9
5
0
Poultry
Ground
meat
Entrees
Timer
Clock
Stop
Clear
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