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R-884M - 25
HIGH VOLTAGE TRANSFORMER REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect the filament leads of high voltage trans-
2. Disconnect the filament leads of high voltage trans-
former from high voltage capacitor and the magnetron.
3. Disconnect the H.V. wire A from the high voltage
transformer.
4. Disconnect the main wire harness from the high volt-
age transformer.
5. Remove the two (2) screws and one (1) washer holding
the transformer to the base plate.
7. Remove the transformer.
8. Now the high voltage transformer is free.
8. Now the high voltage transformer is free.
1. CARRY OUT 3D CHECKS.
2. Disconnect the H.V. wire B and filament lead of the
2. Disconnect the H.V. wire B and filament lead of the
transformer from the magnetron.
3. Remove the one (1) screw holding the chassis support
to the magnetron.
4. Move the air intake duct to left.
5. Carefully remove four (4) screws holding the magnetron
5. Carefully remove four (4) screws holding the magnetron
to the waveguide, when removing the screws hold the
magnetron to prevent it from falling.
6. Remove the magnetron from the waveguide with care
so the magnetron antenna is not hit by any metal object
around the antenna.
around the antenna.
CAUTION: WHEN REPLACING THE MAGNETRON,
BE SURE THE R.F. GASKET IS IN PLACE
AND THE MAGNETRON MOUNTING
SCREWS ARE TIGHTENED SECURELY.
AND THE MAGNETRON MOUNTING
SCREWS ARE TIGHTENED SECURELY.
MAGNETRON REMOVAL
adhesive on the control panel frame surfaces com-
pletely with a soft cloth soaked in alcohol.
pletely with a soft cloth soaked in alcohol.
2. When attaching the key unit to the control panel frame,
adjust the upper edge and right edge of the key unit to
the correct position of control panel frame.
the correct position of control panel frame.
3. Stick the key unit firmly to the control panel frame by
rubbing with soft cloth not to scratch.
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads and the connectors from the
2. Disconnect the wire leads and the connectors from the
control unit.
3. Lift up the control panel assembly and pull it forward.
Now the control panel assembly is free.
NOTE:
1. Before attaching a new key unit, wipe off remaining
1. Before attaching a new key unit, wipe off remaining
CONTROL PANEL ASSEMBLY REMOVAL
FAN MOTOR REPLACEMENT
the gap between the rotor & starter of the fan
motor.
motor.
• Avoid touch the coil of the fan motor with the
pliers as the coil may become cut or damaged.
• Avoid deforming the bracket whilst using the
pliers.
2) Remove the fan blade assembly from the shaft of
the fan motor by pulling and rotating the fan blade
with your hand.
with your hand.
3) Now, the fan blade is free.
CAUTION:
• Do not reuse the removed fan blade as the
• Do not reuse the removed fan blade as the
fixing hole may be oversize.
12.Remove the two (2) screws and nuts holding the fan
motor to the fan duct.
13.Now, the fan motor is free.
INSTALLATION
1. Install the the fan motor to the fan duct with the two (2)
screws and nuts.
2. Install the fan blade to the fan motor shaft according to
the following procedure.
REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the noise filter to the
2. Remove the one (1) screw holding the noise filter to the
chassis support.
3. Release the noise filter from the tabs of the fan duct.
4. Remove the one (1) screw holding the chassis support
4. Remove the one (1) screw holding the chassis support
to the oven cavity front flange.
5. Remove the chassis support from the oven cavity.
6. Disconnect the wire leads from the fan duct.
7. Remove the one (1) screw holding the capacitor holder
6. Disconnect the wire leads from the fan duct.
7. Remove the one (1) screw holding the capacitor holder
to the oven cavity back plate.
8. Release the tabs of the capacitor holder from the fan
duct.
9. Remove the one (1) screw holding the fan duct to the
oven cavity back plate.
10.Remove the fan duct from the oven.
11.Remove the fan duct from the fan motor shaft accord-
11.Remove the fan duct from the fan motor shaft accord-
ing to the following procedure.
1) Hold the edge of the rotor of the fan motor by using
1) Hold the edge of the rotor of the fan motor by using
a pair of groove joint pliers.
CAUTION:
• Make sure that no swarf from the rotor enters
5. Remove one (1) screw holding fan duct to the oven
cavity rear plate.
6. Remove one (1) screw holding capacitor holder to the
oven cavity rear plate.
7. Release the capacitor holder from the fan duct.
8. Remove the high voltage capacitor from the capacitor
8. Remove the high voltage capacitor from the capacitor
holder.
9. Disconnect the high voltage wire B and the high voltage
rectifier assembly from the high voltage capacitor.
10.Disconnect the high voltage rectifier assembly from the
high voltage wire B.
11.Now, the high voltage rectifier assembly and the high
voltage capacitor should be free.
CAUTION: WHEN REPLACING HIGH VOLTAGE
RECTIFIER ASSEMBLY, ENSURE THAT
THE CATHODE (EARTH) CONNECTION
IS SECURELY FIXED TO THE CAPACI-
TOR HOLDER WITH AN EARTHING
SCREW.
THE CATHODE (EARTH) CONNECTION
IS SECURELY FIXED TO THE CAPACI-
TOR HOLDER WITH AN EARTHING
SCREW.
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
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