Magnetron Removal; Capacitor Removal - Frigidaire GLBM188HB Service Manual

GLBM188HB
12.Remove the one (1) screw holding the noise filter assembly to the
fan duct.
13.Disconnect the connector CN-F and CN-D from the control unit.
14.Remove one (1) screw holding the hood duct to the oven cavity top
plate.
15.Remove the one (1) screw holding the hood duct to the fan duct.
16.Release the 6-pin connector and the 3-pin connector of the main
harness A from the hood duct.
17.Disconnect the control harness A from the control harness B.
18.Disconnect the connector of control harness A from the cavity face
plate.
19.Remove the hood duct from the oven cavity by lifting it up.
20. Release the snap band of control harness A from the hood duct.
21.Release the harness of the sensor assembly and the control har-
ness A from four(4) wire holders of the hood duct.
22.Remove two (2) screws holding the sensor assembly to the hood
duct.
23.Now, the sensor assembly is free.
24.Lift the oven lamp cover up and remove the oven lamp cover from
hood duct.
25.Remove the oven lamp (Refer to the procedure of "Oven lamp
removal").
26.Disconnect the wire leads from the oven lamp socket.
27.Rotate the oven lamp socket to remove from hood duct.

[8] MAGNETRON REMOVAL

1. Disconnect the power supply cord, remove the oven from wall and
remove outer case (Refer to procedure of "Removal of Oven from
Wall" and "Outer Case Removal".)
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove two (2) screws holding the chassis support right to the rear
and face of the oven cavity flanges.
5. Remove the one (1) screw holding the noise filter assembly to the
fan duct.
6. Disconnect the wire leads from the fan motor.
7. Disconnect the high voltage wire leads of the high voltage rectifier
assembly from the magnetron.
8. Disconnect the filament lead of the transformer from the magne-
tron.
[9] HIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL
1. Disconnect the power supply cord, remove the oven from wall and
remove outer case (Refer to procedure of "Removal of Oven from
Wall" and "Outer Case Removal".)
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect the high voltage wire leads with high voltage rectifier
from the magnetron.
5. Disconnect filament lead of the transformer from high voltage
capacitor.
6. Disconnect high voltage wire from capacitor.
28.Now, the oven lamp socket is free.
NOTE: When the hood fan motor is reinstalled, hold the hood
fan motor harness at the right edge of the hood duct
with one wire tie.
Hood fan motor harness
Wire tie
Top view of the microwave oven
9. Remove the one(1) screw holding the hood duct to the fan duct and
remove the one (1) screw holding the oven cavity top plate to the
fan duct.
10.Remove the one(1) screw holding the right base plate to the fan
duct and remove the fan duct assembly
11. Remove the power transformer from the right base plate, referring
to "POWER TRANSFORMER REMOVAL".
12.Carefully remove four (4) mounting screws holding the magnetron
to waveguide. When removing the screws hold the magnetron to
prevent it from falling.
13.Remove the magnetron from the unit with care so the magnetron
tube should not be hit by any metal object around the tube.
CAUTION: CAUTION: WHEN REPLACING THE MAGNETRON, BE
SURE THE R.F. GASKET IS IN PLACE AND MOUNTING
SCREWS ARE TIGHTENED SECURELY.
7. Remove one (1) screw holding capacitor holder and high voltage
rectifier to the fan duct.
8. Disconnect the high voltage rectifier assembly from the high volt-
age capacitor and remove one (1) screw holding the voltage recti-
fier assembly to the capacitor holder.
9. Now, the high voltage rectifier assembly is free.
10.Remove capacitor from the holder.
11. Now, the high voltage capacitor is free.
CAUTION: WHEN REPLACING THE HIGH VOLTAGE RECTIFIER
ASSEMBLY, THE GROUND SIDE TERMINAL MUST BE
SECURED FIRMLY WITH A GROUNDING SCREW.
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Wire tie
Hood fan duct
Hood fan motor harness
Hood fan duct
Hood fan motor