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COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
7. Disconnect the high voltage rectifier assembly from the high voltage capacitor. 8. 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 BASE PLATE THROUGH THE CAPACITOR HOLDER WITH AN EARTHING SCREW.
HIGH VOLTAGE TRANSFORMER REMOVAL
1. CARRY OUT 3D CHECKS. 2. Disconnect the main wire harness from the high voltage transformer. 3. Disconnect the filament leads and high voltage wire of high voltage transformer from high voltage capacitor and the magnetron. 4. Remove the two (2) screws and one (1) washer holding the transformer to the base plate. 5. Remove the transformer. 6. Now the high voltage transformer is free.
MAGNETRON REMOVAL
1. CARRY OUT 3D CHECKS. 2. Disconnect the H.V. wire B and filament lead of the transformer from the magnetron. 3. Carefully remove four (4) screws holding the magnetron to the waveguide, when removing the screws hold the magnetron to prevent it from falling. 4. Remove the magnetron from the waveguide with care so the magnetron antenna is not hit by any metal object around the antenna. 5. Remove the magnetron guide H from the magnetron. 6. Remove the one (1) screw holding the magnetron guide V to the magnetron. 7. Now, the magnetron is free. CAUTION: WHEN REPLACING THE MAGNETRON, BE SURE THE R.F. GASKET IS IN PLACE AND THE MAGNETRON MOUNTING SCREWS ARE TIGHTENED SECURELY.
CONTROL PANEL ASSEMBLY REMOVAL
1. CARRY OUT 3D CHECKS. 2. Disconnect the wire leads and the connectors from the control unit. 3. Remove the one (1) screw holding the earth wire to the oven cavity face plate. 4. 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 adhesive on the control panel frame surfaces completely 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. 3. Stick the key unit firmly to the control panel frame by rubbing with soft cloth not to scratch.
FAN MOTOR REPLACEMENT
REMOVAL
1. CARRY OUT 3D CHECKS. 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 four (4) screws holding the chassis support to the oven cavity front flange, back plate, air intake duct and the magnetron. 5. Remove the chassis support from the oven cavity. 6. Disconnect the wire leads from the fan motor. 7. Remove the one (1) screw holding the fan duct to the back plate. 8. Release the tabs of the fan duct from back plate. 9. Remove the fan duct from the oven. 10.Remove the fan blade from the fan motor shaft according to the following procedure. 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 the gap between the rotor & stator of the fan 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. 3) Now, the fan blade is free. CAUTION: � Do not reuse the removed fan blade as the fixing hole may be oversize. 11.Remove the two (2) screws holding the fan motor to the fan duct. 12.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. 1) Hold the centre of the bracket which supports the shaft of the fan motor on a flat table. 2) Apply the screw lock tight into the hole (for shaft) of the fan blade. 3) Install the fan blade to the shaft of fan motor by pushing the fan blade with a small, light weight, rubber mallet.
