Frigidaire CFMV152KW, Servicing Manual

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Section 4 Component Teardown
4-6
Turntable Motor And Food Lamp Sockets
Removal
1. Disconnect the power supply cord.
2. Open the door and block it open.
3. Remove the three (3) screws holding the base cover
to the oven cavity front face plate.
4. Open the front base cover from cavity front face
plate.
5. The base plate is now hanging on the rear cavity.
TURNTABLE MOTOR
6. Disconnect the wire leads from the turntable motor.
7. Remove one (1) screw holding turntable motor to
the oven cavity.
8. Now the turntable motor is free.
HOOD LAMP SOCKET
9. Disconnect the wire leads from the lamp socket.
10. Remove the two lamp covers and remove the two
(2) screws holding the lamp socket to the base
plate. Remove the lamps.
11. Now, the lamp socket is free.
Oven Lamp And Lamp Socket Removal
1. Disconnect the power supply cord.
2. Remove the two (2) screws holding air protector R
to the oven cavity front flange, and remove the air
protector R.
3. Disconnect the wire leads from lamp socket.
4. Turn the lamp socket and release it from the air
duct.
5. Turn the oven lamp out of the lamp socket.
6. Now, the oven lamp is free.
A. Servicing the touch control panel with power
supply of the oven:
Therefore, before checking the performance of the touch
control panel:
1. Disconnect the power supply cord and then remove
the outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
The high voltage transformer of the microwave
oven is still live during servicing and presents a
hazard.
CAUTION
To discharge the high voltage capacitor, wait for 60
seconds and then short-circuit the connection of the
high-voltage capacitor (that is the connecting lead of
the high-voltage rectifier) against the chassis with the
use of an insulated screwdriver.
NOTE
Servicing The Touch Control Panel
Precautions For Handling Electronic Components
This unit uses CMOS LSI in the integral part of the
circuits. When handling these parts, the following
precautions should be strictly followed. CMOS LSI have
extremely high impedance at its input and output
terminals. For this reason, it is easily in
fl uenced by the
surrounding high voltage power source, static electricity
charge in clothes, etc. and sometimes it is not fully
protected by the built-in protection circuit.
In order to protect CMOS LSI.
1. When storing and transporting, thoroughly wrap
them in aluminium foil. Also wrap all PW boards in
aluminium foil.
2. When soldering, ground the technician and use a
grounded soldering iron and work table.
Servicing of Touch Control Panel
The following are procedures to permit servicing of the
touch control panel of the microwave oven and the
precautions you must take when doing so. To perform
the servicing, power to the touch control panel is
available either from the power line of the oven itself or
from an external power source.