Touch Control Panel - Sharp R-530ES Supplemental Service Manual

R - 5 3 0 E S
PROCEDURE
LETTER
J
KEY UNIT TEST
1.
2.
3.
4.
5.
6.
7.
8.
TEST PROCEDURES
Disconnect the power supply cord, and then remove outer case.
Open the door and block it open.
Discharge high voltage capacitor.
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.
Reconnect all leads removed from components during testing.
Re-install the outer case (cabinet).
Reconnect the power supply cord after the outer case is installed.
Run the oven and check all functions.
G 1 G 2 G 3
Beverage
Center
Fresh
From the
Rice
vegetables
Pantry
Ground
Poultry
meat
Fish
Entrees Vegetables
Seafood
COMPONENT TEST
G 4 G 5 G 6 G 7
1 2 3 4
6 7 8 9
Keep
Start Timer
Snacks
Warm
Touch On Clock
Plus
Power Stop
Breakfast Lunch
Level
Clear
Defrost Custom Baked Sensor
Center Help potatoes reheat
8
G 8
G 9
5
G10
0
Minute
G11
Plus
15
G12
Minute
Recipes
G13
Popcorn
G14