Sharp R-21JCA-F Antenna Motor Shaft Replacement, After any service, make sure of the following

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(B)An approved microwave survey meter should be used to assure compliance with proper microwave radiation emission limitation standards. (Refer to Microwave Measurement Procedure.)

After any service, make sure of the following :

1.Door latch heads smoothly catch latch hook through latch holes and that latch head goes through center of latch hole.

2.Deviation of door alignment from horizontal line of cavity face plate is to be less than 1.0mm.

3.Door is positioned with its face pressed toward cavity face plate.

4.Check for microwave leakage around door with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.)

Note: The door on a microwave oven is designed to act as an electronic seal preventing the leakage of microwave energy from oven cavity during cook cycle. This function does not require that the door be air-tight, moisture (condensation)-tight or light-tight. Therefore, occasional appearance of moisture, light or sensing of gentle warm air movement around oven door is not abnormal and do not in themselves indicate a leakage of microwave energy from oven cavity.

R-21JCA-F

Upper

Pin Oven

Hinge

Upper Oven

Hinge

Lower

Oven

Door Hinge

Panel

Slit

Chok

Choke Cover

Lower

Oven

Pin Hinge

Figure C-7. Door Replacement

ANTENNA MOTOR SHAFT REPLACEMENT

REMOVAL

1.Disconnect the power supply cord.

2.Open the door and block it open.

3.To discharge the high voltage capacitor, wait for 60 seconds.

4.Remove the antenna motor from the oven cavity bottom plate, referring to "ANTENNA MOTOR REMOVAL" .

5.Remove the ceramic shelf from the oven cavity bottom plate.

6.Remove the one (1) screw and the one (1) washer holding the antenna holder of the stirrer antenna assembly to the oven cavity bottom plate through the square hole of the stirrer antenna. Refer to Figure C-8.

7.Release the antenna holder from the one (1) tab of the oven cavity bottom plate.

8.Remove the stirrer antenna assembly from the oven cavity bottom plate.

9.Remove the antenna motor shaft from the hole of the oven cavity bottom plate.

10.Now, the antenna motor shaft is free.

Screw

Antenna holder

Washer

 

Square

 

hole

 

 

Stirrer antenna

 

Antenna

Tab

motor shaft

 

Oven cavity

 

bottom plate

Antenna motor

Screw

Figure C-8. Antenna Motor Shaft Removal

INSTALLATION

1.Install the antenna motor shaft into the hole of the oven cavity bottom plate, and turn the flat faces of antenna motor shaft to the left and right side walls of oven cavity (to fit the stirrer antenna holder). Refer to Figure C-9.

2.Set the direction of the stirrer antenna and antenna holder so that the hole of the antenna holder fit to the centre of the stirrer antenna's big blade. Refer to Figure C-9.

3.Hook the hole of the antenna holder on the tab of the oven cavity bottom plate. Refer to Figure C-10.

4.Insert the antenna holder into the hole of the oven cavity bottom plate and fit the hole of the antenna holder with an antenna motor shaft. Refer to Figure C-10.

5.Install the antenna holder to the oven cavity bottom plate with the one (1) screw and the one (1) washer. Refer to Figure C-8.

6.Install the antenna motor to the oven cavity bottom plate with one (1) screw. Refer to Figure C-8.

7.Connect the wire leads to the antenna motor, referring to the pictorial diagram.

8.Install the base plate cover to the base plate with one (1) screw.

9.Install the ceramic shelf to the oven cavity bottom plate. Refer to "INSTALLATION OF CERAMIC SHELF" .

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Contents Model R-21JCA-F Before Servicing Dont Touch Before Servicing When the testing is completedMicrowave Measurement Procedure RequirementsLeakage test Sharp Electronics Corporation Light Duty Commercial Microwave Oven 21JCA-F ForewordActual capacity for holding food is less SpecificationGeneral Information Maximum width, depth and height10 6 Oven DiagramCooking Condition OperationDescription of Operating Sequence OFF ConditionFM AM Figure O-1 Oven Schematic-OFF ConditionDescription and Function of Components Troubleshooting Guide Test Procedure Possible Case Defective PartsProblem Power Transformer Test Microwave Output PowerHigh Voltage Capacitor Test Thermal CUT-OUT Test 125˚C OvenThermal CUT-OUT Test 145˚C Magnetron Primary Interlock Relay RY1 Door Sensing SwitchMonitor Switch Test Primary Interlock System TestControl Panel Assembly Test Before testingNoise Filter Test Relay Test Test Procedures Letter Component TestSteps Occurrence Cause or Correction Description of LSI Touch Control Panel AssemblyPower source voltage +5V Pin No Signal Description Auto clear terminalPower source voltage Internal clock oscillation frequency input settingServicing Tools Other PrecautionsTouch Control Panel Servicing Servicing of Touch Control PanelSoldering Precautions for Using LEAD-FREE SolderUsing lead-free wire solder Employing lead-free solderComponent Replacement and Adjustment Procedure Power Transformer RemovalOuter Case Removal Control Panel Assembly Removal Magnetron RemovalOven Lamp and Lamp Socket Removal Rear View Positive Lock Connector NO-CASE Type RemovalAntenna Motor Removal Cooling FAN Motor RemovalPower Supply Cord Replacement Re-installRemoval Door Parts Removal Antenna Motor Shaft Replacement After any service, make sure of the followingRemoval Figure C-10. Stirrer Antenna Assembly Installation Installation of Ceramic ShelfHighvoltagecomponents PictorialDiagramCN-A3 Pin5mm Pitch Figure S-3. Printed Wiring Board Control Panel Parts Parts ListElectric Parts Cabinet PartsSCREWS,NUTS and Washers HOW to Order Replacement PartsDoor Parts MiscellaneousOven and Cabinet Parts Control Panel Parts Copyright 2005 by Sharp Corporation ALL Rights Reserved Packing and Accessories
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