16
R-2110JK
R-2110JW
R-2120JK
R-2120JW
6-PIN CONNECTOR
OF HOOD FAN MOTOR
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. To discharge high voltage capacitor, wait for 60 seconds.
4. A continuity check across the thermal cut-out terminals should indicate an open circuit unless the
temperature of the thermal cut-out reaches approximately 140˚F(60˚C) or more. At that temperature, the
contacts will close. The thermal cut-out opens automatically at approximately 113˚F(45˚C).
5. Reconnect all leads removed from components during testing.
6. Reinstall the outer case (cabinet).
7. Reconnect the power supply cord after the outer case is installed.
8. Run the oven and check all functions.
H
HOOD THERMAL CUT-OUT TEST
I
HOOD FAN MOTOR TEST
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. To discharge high voltage capacitor, wait for 60 seconds.
4. If the motor does not turn, touch the FAN HI/LO pad once (set hood fan motor power "HIGH") and check
voltage between pins "1" and "2" (Blue and Black wires) of the 6 pin connector. If 120 Volts appear and
the hood capacitor is good, replace the hood fan assembly. If 120 Volts does not appear, check the motor
circuit. The resistance values of motor terminals are as follows:
5. Reconnect all leads removed from components during testing.
6. Reinstall the outer case (cabinet).
7. Reconnect the power supply cord after the outer case is installed.
8. Run the oven and check all functions.
Resistance between;
BLU (1)
AND YLW (4) =
0
Ω
(Shorted)
BLK (2)
AND YLW (4) = 32
Ω
BLU (1)
AND
BLK (2) = 32
Ω
BLK (2)
AND WHT (3) = 10
Ω
WHT (3) AND
RED (5) = 20
Ω
32
Ω
10
Ω
20
Ω
HOOD FAN
CAPACITOR
YLW
RED
BLU
BLK
1
2
3
WHT
4
5
1
2
3
4
5
BLU
BLK WHT
YLW RED
The touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore, unlike
conventional microwave ovens, proper maintenance cannot be performed with only a voltmeter and
ohmmeter. In this service manual, the touch control panel assembly is divided into two units, Control Unit and
Key Unit, and also the Control Unit is divided into two units, LSI Unit and Power Unit, and troubleshooting by
unit replacement is described according to the symptoms indicated.
Before testing,
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 seven (7) screws holding the hood intake duct R to the oven cavity top plate, oven cavity flange,
fun duct, magnetron duct and the base plate R. And 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.
J
TOUCH CONTROL PANEL ASSEMBLY TEST
