Sharp R-209FW Service Manual - Page 21
Magnetron Removal, High Voltage Components Removal, High Voltage Transformer Removal
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MAGNETRON REMOVAL R-209(IN) R-209(W) R-209(Y) 1. CARRY OUT 3D CHECKS. 2. Disconnect the wire leads from magnetron. 3. Remove the three (3) screws holding the magnetron to the waveguide. 4. Remove the magnetron from waveguide. 5. 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. HIGH VOLTAGE COMPONENTS REMOVAL (HIGH VOLTAGE CAPACITOR AND HIGH VOLTAGE RECTIFIER ASSEMBLY) To remove the components, proceed as follows. 1. CARRY OUT 3D CHECKS. 2. Remove one (1) screw holding capacitor holder to rear cabinet. 3. Disconnect the H.V. wire of the H.V. rectifier assembly from the magnetron. 4. Disconnect the filament lead of the high voltage trans- former from the H.V. capacitor. 5. Remove one (1) screw holding ground side terminal of high voltage rectifier assembly, and remove capacitor holder. 6. Disconnect all the leads and terminals of high voltage rectifier assembly from high voltage capacitor. 7. Now the H.V. rectifier assembly and H.V. capacitor should be free. CAUTION: WHEN REPLACING HIGH VOLTAGE RECTIFIER ASSEMBLY, ENSURE THAT THE CATHODE (GROUND) CONNECTION IS SECURELY FIXED TO THE CAPACITOR HOLDER WITH A GROUNDING SCREW. CAUTION: DO NOT REPLACE ONLY HIGH VOLTAGE RECTIFIER. WHEN REPLACING IT, REPLACE HIGH VOLTAGE RECTIFIER ASSEMBLY. HIGH VOLTAGE TRANSFORMER REMOVAL 1. CARRY OUT 3D CHECKS. 2. Disconnect the wire leads (main wire harness) from high voltage transformer. 3. Disconnect the lead from magnetron filament. 4. Disconnect the leads of the high voltage transformer from high voltage capacitor. 5. Remove the two (2) screws holding the transformer to bottom plate from the upper side. 6. Remove the remaining two (2) screws from the bottom. 7. Remove the transformer. 8. Now the high voltage transformer is free. Re-install 1. Rest transformer on the bottom plate with its primary terminals toward the oven face plate. 2. Secure transformer with four (4) screws to the bottom plate. 3. Re-connect wire leads (primary and high voltage) and filament leads to the high voltage transformer, magnetron and high voltage capacitor, referring to "Pictorial Diagram". 4. Re-install outer case and check that the oven is operating properly. POSITIVE LOCK® CONNECTOR (NO-CASE TYPE) REMOVAL 1. CARRY OUT 3D CHECKS. 2. Push the lever of positive lock® connector. 3. Pull down on the positive lock® connector. Positive lock® connector Terminal 1 CAUTION: WHEN CONNECTING THE POSITIVE LOCK® CONNECTORS TO THE TERMINALS, INSTALL THE POSITIVE LOCK® SO THAT THE LEVER FACES YOU Lever Push 2 Pull down Figure C-1. Positive lock® connector CONTROL PANEL ASSEMBLY REMOVAL 1. CARRY OUT 3D CHECKS. 2. Disconnect the leads from the control unit and the timer motor. 3. Remove the one (1) screw holding the control panel to the front plate of the oven cavity. 4. Now, the control panel assembly is free. 19