Sharp MMD24B Auto Drawer Gear Removal/Installation, Bottom cover, Rack Gear Removal, Base plate

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AUTO DRAWER GEAR REMOVAL/INSTALLATION

MMD24S

MMD24B

AUTO DRAWER GEAR REMOVAL/INSTALLATION

(This procedure requires a 14" or greater phillips screwdriver)

1.Disengage any power going to the unit.

2.Open the drawer and keep it open.

3.Remove the top cover and right side cabinet.

4.Unhook wiring to Auto Drawer Gear.

5.Remove bottom screw below Auto Drawer Gear (Fig. G-1).

6.Remove the (4) screws holding the auto drawer gear to the bottom cavity angle (Fig. G-2).

7.Disengage (pull) Auto Drawer Gear from rack gear and slide to the right (toward the rear), then turn motor 900 and slip out along rear of drawer (Fig. G-3).

8.Then tilt Auto Gear Motor 20o to extract the assembly out. The Auto Drawer Gear is now free.

Installation:

1. Proceed in reverse to reinstall the Auto Drawer Gear taking care that the gear teeth are set into the cavity angle correctly

Base plate

Bottom cover

Bottom cover

Fig. G-1

Slide to back

Fig. G-2

RACK GEAR REMOVAL

1.Follow the Microwave Drawer disassembly as previously stated

2.Open the drawer and keep it open.

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

4.Remove the Microwave Drawer by following steps 1, 2, 5, 8, 9 & 10 as instructed under "DRAWER ASSEMBLY AND CHOKE REMOVAL".

5.Remove the (3) screws holding the Rack Gear to the bottom slide rail (Fig. G-5).

7. Proceed in reverse to reinstall the new Rack Gear.

turn 90o

Fig. G-3

Tilt 20o

Fig. G-4

Fig. G-5

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Contents TABLE OF CONTENTS WARNING TO SERVICE PERSONNELWARNING TO SERVICE PERSONNEL MICROWAVE MEASUREMENT PROCEDUREBEFORE SERVICING WARNING TO SERVICE PERSONNEL After repairingBefore Servicing When the testing is completedMICROWAVE MEASUREMENT PROCEDURE B. Preparation for testingA. Requirements C. Leakage testDANGER 1440 Bridge Gate Dr Diamond Bar, CASERVICE MANUAL If provided, Vent Hood, Fan assembly, Cooling Fan MotorMICROWAVE DRAWER SPECIFICATION DESCRIPTIONGENERAL INFORMATION GROUNDING INSTRUCTIONSPOWER LEVEL P-0 TO P-90 COOKING OPERATIONDESCRIPTION OF OPERATING SEQUENCE OFF CONDITIONMICROWAVE SENSOR COOKING CONDITIONCooking Sequence DOOR SCHEMATIC OFF CONDITIONCLOSED, COOK OFF CONDITTION TEST PROCEDURES PROCEDUREA TOUCH CONTROL PANEL ASSEMBLY TEST Before testingC RELAY TEST COMPONENT TESTB KEY UNIT TEST Check supply voltage and oven power cord DEFROST TESTSTEPS The rated AC voltage is not present betweenWater load cooking test TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNITF AH SENSOR TEST Checking the initial sensor cooking condition CHECKING CONTROL UNIT R1, R2 22Ω ± 1% 1/2W R3 4.3kΩ ± 5% 1/4W R4 1MΩ ± 5% 1/4WRefer to the disassembly instructions found on Page G MAGNETRON ASSEMBLY TESTMICROWAVE OUTPUT POWER H THERMAL CUT-OUT TESTK MONITOR SWITCH TEST I SECONDARY INTERLOCK SWITCH TESTJ STOP SWITCH TEST M POWER TRANSFORMER TEST L BLOWN MONITOR FUSE TESTTOUCH CONTROL PANEL ASSEMBLY Control Unit and Power Unit4 Reset Circuit 5 Indicator CircuitDESCRIPTION OF LSI IC-1 Power source voltage 0V GNDInternal clock oscillation frequency setting input Power source voltage +5VSignal Segment data signalSignal coming from touch key Signal similar to P23Magnetron high-voltage circuit driving signal Common relay driving signal. Square Waveform 60HzSignal to sound buzzer Signal to synchronize LSI with commercial power source frequencyHUMIDITY SENSOR CIRCUIT ventilation opening for sensing1 Structure of Humidity Sensor 2 Operational Principle of Humidity SensorTOUCH CONTROL PANEL SERVICING 1 Servicing the touch control panel with power supply of the oven4. Other Precautions 2. Servicing of Touch Control PanelPRECAUTIONS FOR USING LEAD-FREE SOLDER 2. Using lead-free wire solder1. Employing lead-free solder 3. SolderingCOMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING FOR WIRINGWARNING AGAINST HIGH VOLTAGE To prevent an electric shock, take the following pre- cautionsMICROWAVE DRAWER DISASSEMBLY POWER CORD REPLACEMENT Un-hook/Attach Black AC Wire to Top TerminalUn-hook/Attach White AC Wire to Bottom Terminal Un-hook/Attach Ground to metal Tab on Back PlateSTOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENTRe-install After adjustment, check the followingDRAWER ASSEMBLY AND CHOKE REMOVAL DRAWER SUPPORT ANGLE REMOVALDRAWER/SLIDE RAIL REMOVAL 1. Follow the Microwave Drawer disassembly as previouslySWITCH ANGLE REMOVAL/ADJUSTMENT SWITCH ANGLE REMOVALACTUATOR REMOVAL/ADJUSTMENT Actuator adjustmentAUTO DRAWER GEAR REMOVAL/INSTALLATION Bottom coverRACK GEAR REMOVAL InstallationHIGH VOLTAGE COMPONENTS to Back PlateFigure S-2. Power Unit Circuit MICROFM A CN-AUNIT CONTROLUNIT F G HA B C D E F G H Figure S-4. Printed Wiring Board of Power Unit2.5A 5.PrintedWiringBoard UnitControlofCOPYRIGHT 2008 BY DACOR, INC ALL RIGHTS RESERVED