KitchenAid KHMS105E service manual Removing the High Voltage Rectifier High Voltage Capacitor

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REMOVING THE HIGH VOLTAGE RECTIFIER

AND THE HIGH VOLTAGE CAPACITOR

WARNING

Personal Injury Hazard

Disconnect from the electrical supply be- fore servicing the unit. Failure to do so could result in death or electrical shock.

CAUTION: Because of the weight and size of the microwave oven, two people are required to safely move and install it. Failure to do so could result in personal injury.

1.Disconnect the electrical supply to the microwave oven.

2.Refer to page 2-28 for accessing the high voltage components.

WARNING

Personal Injury Hazard

Disconnect from power supply before ser- vicing. Discharge the capacitor using a 20,000-ohm discharge resistor, or an insu- lated plastic-handle screwdriver to short across the capacitor terminals.

3.Discharge the high-voltage capacitor.

4.Unplug the wire connector going to the line fuse.

5.Remove the fan motor assembly from the unit (see the illustration on page 2-19 for the procedure).

Replacing The High Voltage Rectifier

1.Unplug one end of the high voltage recti- fier from the high voltage capacitor termi- nal.

2.Remove the mounting screw from the capacitor strap flange at the other end of the high voltage rectifier, and remove the rectifier.

3.Mount the eyelet on the end of the high voltage rectifier lead to the capacitor strap flange with its mounting screw.

4.Reassemble the microwave oven.

Replacing The High Voltage Capacitor

1.Unplug the leads going to the high volt- age capacitor terminals.

2.Remove the capacitor mounting strap screw, then remove the old capacitor.

3.Position the new high voltage capacitor with the round blister (between the leads), at the top, and loosely mount it to the chassis with the capacitor mounting strap and the mounting screw you removed in the previous step. Make sure that the flange on the strap is against the front edge of the capacitor, and tighten the screw just enough to hold the capacitor in place.

4.Reassemble the microwave oven.

2-30

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Contents Microwave Oven Hood Combination KHMS105E KHMC107E Table of Contents Convection Thermistor Convection Heating Element Important Safety Information Electrical Shock HazardPage Vii Equipment Leakage TestTest Theory of Operation Relay #4 Capacitor Bkbl Blower Motor High Component Access Component SectionsGeneral Removing the Microwave Oven & CabinetBase Plate Screws Cooktop Light Assembly Wiring Protection Control System Removing the Oven DoorRemoving the Door Choke Removing the Control Panel Removing the Line Fuse REMOVING/ADJUSTING the Interlock Switches Removing a SwitchInset SecondaryMaking Adjustments Removing the Base Thermal Fuse Removing the Magnetron Thermal Fuse Removing the Cavity Thermal Fuse Removing the Convection Thermistor White Wires Operating Control System Removing the Oven Light SocketRemoving the Control Circuit Board Turn Board OverRemoving the Temperature Probe Socket Removing the FAN Motor Removing the Power Cord Removing the Blower Motor Capacitor Removing the Convection Heating Element Viewed from Under TOP Plate Removing the GAS Sensor Removing the Synchronous Motor Removing a Cooktop Light Socket High Voltage Components Accessing the High Voltage Components Removing the Magnetron Removing the High Voltage Rectifier High Voltage Capacitor Replacing The High Voltage RectifierHigh Voltage Rectifier Mounting Flange Removing the High Voltage Transformer Component Description & Testing Important Safety InstructionsPage Original 03/97 Thermal Fuses Possible Customer ComplaintBlower Motor Capacitor GAS Sensor Convection Thermistor Convection Heating Element Viewed from Under TOP PlateMotors Programming Checks Touch Panel Continuity TestTemperature Probe Things to KnowCombination Bake Combination RoastCharts Problem Possible Cause Test Procedure Or CorrectionProblem Possible Cause Test Procedure Or Correction Problem Possible Cause Test Procedure Or Correction Checking the Microwave Power Output Checking for Microwave Energy Leakage Measuring The Oven With The Cabinet Installed Making the MeasurementsPage Component Testing Test ChartsTerminal-To-Terminal Contacts Component Test Procedure Result Keyboard Matrix Control Circuit Board Check List Voltage circuitsPRIMARY, MONITOR, & Secondary Switch Checkout Procedure Continuity Test ChartDoor Open Door Closed
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