18
R-2110JK
R-2110JW
R-2120JK
R-2120JW
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
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 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.
6. Reconnect all leads removed from components during testing.
7. Re-install the control panel assembly.
8. Reconnect the power supply cord.
9. Run the oven and check all functions.
1. Disconnect the power supply cord, and then remove outer case. Refer to procedure of “HOOD LOUVER
REMOVAL”, “REMOVAL OF OVEN FROM WALL” and “OUTER CASE REMOVAL”.
2. Open the door and block it open.
3. To discharge high voltage capacitor, wait for 60 seconds.
4. Remove the hood intake duct R.
5. Disconnect the leads to the primary of the inverter unit.
6. Ensure that these leads remain isolated from other components and oven chassis by using insulation tape.
7. After that procedure, re-connect the power supply cord.
8. Check voltage between the Pin No. 3 of the 3 pin connector (C) and the normal open terminal of the relay
RY1 on the control unit with an A.C. voltmeter.
The meter should indicate 120 volts, if not check oven circuit.
RY1, RY3, RY4, RY5 and RY6 Relay Test
These relays are operated by D.C. voltage
Check voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation.
DC. voltage indicated ....................... Defective relay.
DC. voltage not indicated ................. Check diode which is connected to the relay coil. If diode is good,
control unit is defective.
RELAY SYMBOL
OPERATIONAL VOLTAGE
CONNECTED COMPONENTS
RY1
Approx. 25.0V D.C.
Inverter unit/ Oven lamp/ Fan motor/ Stirrer motor
RY3
Approx. 25.0V D.C.
Hood motor (High/ Low seclection)
RY4
Approx. 25.0V D.C.
Hood motor
RY5
Approx. 25.0V D.C.
Hood lamp
RY6
Approx. 25.0V D.C.
Hood lamp
9. Disconnect the power supply cord.
10. Open the door and block it open.
11. To discharge high voltage capacitor, wait for 60 seconds.
12. Reconnect all leads removed from components during testing.
13. Re-install the hood intake duct R.
14. Re-install the outer case (cabinet).
15. Reconnect the power supply cord after the outer case is installed.
L
RELAY TEST
G8
G9
G10
G11
G12
CUSTOM
HELP
DINNER
FAVORITES
2
9
7
G7
1
6
8
STOP
CLEAR
POPCORN
G6
G5
G1
G2
G3
1
62
61
59
58
57
56
55
54
53
52
SNACK
TIME
TIMER/
CLOCK
3
4
5
0
60
START
MINUTE PLUS
POWER
LEVEL
MELT
KEEP
WARM
WARM
EASY
DEFROST
FAN
HI / LO
QUICK
BREAKFAST
SOFTEN
LIGHT
HI / LO
G4
G8
G9
G10
G11
G12
Melt
2
9
7
G7
1
6
Soften
8
STOP
CLEAR
Popcorn
G6
G5
G1
G2
G3
1
62
61
59
58
57
56
55
54
53
52
Dinner
Delight
Cook
3
4
5
0
60
START
Minute Plus
POWER
LEVEL
Warm
Reheat
Breakfast
Bar
Lunch on
the Run
Keep Warm
Plus
Custom
Help
Easy
Defrost
FAN
HI / LO
Timer
Clock
LIGHT
HI / LO
G4
R-2110J
R-2120J
M
EASY DEFROST TEST
(1) Open the door.
(2) Place one cup of water in the center of the turntable tray in the oven cavity.
(3) Touch the “EASY DEFROST” pad once. And then touch the number pad “ 2 ”.
(4) Touch the number pad “ 5 ”.
(5) Close the door.
