Electrolux EI30MH55GBA, Техническое и сервисное руководство

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Troubleshooting
3-8
Procedure
Letter
I
J
Component Test
HOOD FAN MOTOR TEST
1. Disconnect the power supply cord, and then remove outer case.
2. Open the door and block it open.
3. 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 1 20 Volts appear and the hood capacitor is good, replace the hood fan
assembly. If 1 20 Volts does not appear, check the motor circuit. The resistance values of
motor terminals are as follows in the chart below:
4. Reconnect all leads removed from components during testing.
5. Reinstall the outer case (cabinet).
6. Reconnect the power supply cord after the outer case is installed.
7. Run the oven and check all functions.
TOUCH CONTROL PANEL ASSEMBLY TEST
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. 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. Remove the hood intake
duct R.
4. Disconnect the leads to the primary of the inverter unit.
5. Ensure that these leads remain isolated from other components and oven chassis by using
insulation tape.
6-PIN CONNECTOR
OF HOOD FAN MOTOR
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