Sharp MMD24B Drawer Assembly And Choke Removal, Drawer Support Angle Removal, Fig. D-1, stated

Page 30
DRAWER/SLIDE RAIL REMOVAL

MMD24S

 

 

MMD24B

DRAWER/SLIDE RAIL REMOVAL

 

DRAWER ASSEMBLY AND CHOKE REMOVAL

 

1. Follow the Microwave Drawer disassembly as previously

Fig. D-1

stated

 

2.Open the drawer and keep it open.

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

4.Remove the both right and left side panels.

5.Remove (2) Drawer Support Covers from Choke Cover as shown in (Fig. D-1).

6.Insert a putty knife (thickness of about 0.5mm) into the gap between the choke cover and the door frame.

7.Carefully slide choke cover away from drawer as far as possible.

8.Remove (6) screws from all (3) drawer Support Angles as shown in (Fig. D-2).

9.Unhook Drawer Support Angles from drawer, then remove.

10.Now, the door assembly is free and the Choke Cover can now be removed.

DRAWER SUPPORT ANGLE REMOVAL

1.Remove Drawer Assembly and Choke Cover as stated in

"DRAWER ASSEMBLY AND CHOKE REMOVAL".

2.Remove (2) screws from right or left Latch Angle Assembly, then remove Angle assembly (Fig. D-4).

3.Separate Slide Rails by moving inside lever of Slide Rails. The Slide Rail will now separate by pulling straight forward and out (Fig. D-3).

4.At this point, you can replace either Latch Angle Assy or Latch Angles.

To reassemble, just reverse the above order.

After reassembly, do the following.

Fig. D-3

 

(A)Make sure that drawer sensing switch, secondary interlock switch and monitor switch are operating properly. (Refer to chapter "Test Procedures".)

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

After any servicing, make sure of the following :

1.Drawer 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.Drawer is positioned with its face pressed toward cavity face plate.

4.Reassemble the unit and check for microwave leakage around drawer with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.)

Note: The drawer 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 door be air-tight,moisture (condensation)-tight or light-tight. Therefore,occasional appearance of moisture,light orsensingofgentlewarmairmovementaroundoven drawer is not abnormal and do not of themselves

NOTE:

To remove only the

Microwave Drawer, follow steps

1, 2, 5, 8, 9 & 10

as instructed under

"DRAWER ASSEMBLY AND CHOKE REMOVAL".

Fig. D-2

Fig. D-4

30

Image 30
Contents WARNING TO SERVICE PERSONNEL TABLE OF CONTENTSWARNING TO SERVICE PERSONNEL MICROWAVE MEASUREMENT PROCEDUREBEFORE SERVICING Before Servicing WARNING TO SERVICE PERSONNELAfter repairing When the testing is completedA. Requirements MICROWAVE MEASUREMENT PROCEDUREB. Preparation for testing C. Leakage testSERVICE MANUAL DANGER1440 Bridge Gate Dr Diamond Bar, CA If provided, Vent Hood, Fan assembly, Cooling Fan MotorMICROWAVE DRAWER SPECIFICATION DESCRIPTIONGENERAL INFORMATION GROUNDING INSTRUCTIONSDESCRIPTION OF OPERATING SEQUENCE POWER LEVEL P-0 TO P-90 COOKINGOPERATION OFF CONDITIONSENSOR COOKING CONDITION Cooking SequenceMICROWAVE SCHEMATIC OFF CONDITION CLOSED, COOK OFF CONDITTIONDOOR A TOUCH CONTROL PANEL ASSEMBLY TEST TEST PROCEDURESPROCEDURE Before testingCOMPONENT TEST B KEY UNIT TESTC RELAY TEST STEPS Check supply voltage and oven power cordDEFROST TEST The rated AC voltage is not present betweenTESTING METHOD FOR AH SENSOR AND/OR CONTROL UNIT F AH SENSOR TEST Checking the initial sensor cooking conditionWater load cooking test CHECKING CONTROL UNIT R1, R2 22Ω ± 1% 1/2W R3 4.3kΩ ± 5% 1/4W R4 1MΩ ± 5% 1/4WMICROWAVE OUTPUT POWER Refer to the disassembly instructions found on PageG MAGNETRON ASSEMBLY TEST H THERMAL CUT-OUT TESTI SECONDARY INTERLOCK SWITCH TEST J STOP SWITCH TESTK MONITOR SWITCH TEST M POWER TRANSFORMER TEST L BLOWN MONITOR FUSE TEST4 Reset Circuit TOUCH CONTROL PANEL ASSEMBLYControl Unit and Power Unit 5 Indicator CircuitInternal clock oscillation frequency setting input DESCRIPTION OF LSI IC-1Power source voltage 0V GND Power source voltage +5VSignal coming from touch key SignalSegment data signal Signal similar to P23Signal to sound buzzer Magnetron high-voltage circuit driving signalCommon relay driving signal. Square Waveform 60Hz Signal to synchronize LSI with commercial power source frequency1 Structure of Humidity Sensor HUMIDITY SENSOR CIRCUITventilation opening for sensing 2 Operational Principle of Humidity Sensor4. Other Precautions TOUCH CONTROL PANEL SERVICING1 Servicing the touch control panel with power supply of the oven 2. Servicing of Touch Control Panel1. Employing lead-free solder PRECAUTIONS FOR USING LEAD-FREE SOLDER2. Using lead-free wire solder 3. SolderingWARNING AGAINST HIGH VOLTAGE COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDUREWARNING FOR WIRING To prevent an electric shock, take the following pre- cautionsMICROWAVE DRAWER DISASSEMBLY Un-hook/Attach White AC Wire to Bottom Terminal POWER CORD REPLACEMENTUn-hook/Attach Black AC Wire to Top Terminal Un-hook/Attach Ground to metal Tab on Back PlateRe-install STOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVALSTOP SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT After adjustment, check the followingDRAWER/SLIDE RAIL REMOVAL DRAWER ASSEMBLY AND CHOKE REMOVALDRAWER SUPPORT ANGLE REMOVAL 1. Follow the Microwave Drawer disassembly as previouslyACTUATOR REMOVAL/ADJUSTMENT SWITCH ANGLE REMOVAL/ADJUSTMENTSWITCH ANGLE REMOVAL Actuator adjustmentRACK GEAR REMOVAL AUTO DRAWER GEAR REMOVAL/INSTALLATIONBottom cover InstallationHIGH VOLTAGE COMPONENTS to Back PlateFM A Figure S-2. Power Unit CircuitMICRO CN-AUNIT UNITCONTROL F G HFigure S-4. Printed Wiring Board of Power Unit 2.5AA B C D E F G H 5.PrintedWiringBoard UnitControlofCOPYRIGHT 2008 BY DACOR, INC ALL RIGHTS RESERVED