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R-530EK
R-530EW
SERVICE MANUAL
S3108R530EUW/
MICROWAVE OVEN
MODELS
1200 WATTS
R-530EK
SENSOR DEFROST COOK HELP
Sensor Cooking
Sensor Custom
Popcorn
reheat help
Fresh Baked
Rice
vegetables potatoes
Ground Fish/
Poultry
meat seafood
Frozen Foods
Entrees Snacks Vegetables R-530EW
Let's Cook
15 Minutes
Breakfast Lunch
Recipes
Defrost From the Beverage
Center Pantry Center
Timer Keep Warm Minute
Clock Plus Plus
Power Stop Start
Level Clear Touch On
In the interest of user-safety the oven should be
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R-530EK R-530EW PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of h
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R-530EK R-530EW WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of pro- ducing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Trans- former, Magnetron, High Voltage Rectifier Assem- bly, High Voltage Harness etc.. Read the Service Manual carefully and follow all instructions. Don't Touch ! Danger High Voltage When the testing is completed, Before Se
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R-530EK R-530EW MICROWAVE MEASUREMENT PROCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven 2 should not exceed 1mW/cm at any point 5cm or more from the external surface of the oven, measured prior to acquisition 2 by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm at any point 5cm or more from the external surface of the oven. 2) Safety interlock switches Primary interlock rela
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R-530EK R-530EW SERVICE MANUAL PRODUCT DESCRIPTION MICROWAVE OVEN R-530EK/ R-530EW GENERAL INFORMATION FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVEN, R-530EK, R-530EW. OPERATION It is recommended that service personnel carefully study the entire text of this manual so that they will be qualified to render satisfactory customer service. TROUBLESHOOTING GUIDE AND TEST PROCEDURE Check t
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R-530EK R-530EW SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 13.8 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 1200 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 24" Height 13-3/8" Depth 19-1/8" Cooking Cavity Dimensions Width 17-3/8" Height 10-1/2" 2.0 Cubic Feet Depth 18-5/8" Control Complement Touch Control System Clock ( 1:00 - 12:59 ) Timer (0 - 99 min. 99 seconds) Microwave Power for Variable Cooking Repetition Rate; 100 P
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R-530EK R-530EW Where a two-pronged wall-receptacle is encountered, it is the personal Grounded 3-Pronged Plug Receptacle Box responsibility and obligation of the customer to contact a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly grounded and polarized. If the extension cord must be used, it should be a 3-wire, 15 amp. or higher rated cord. Do not drape over a countertop or table where it can be pulled on b
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R-530EK R-530EW OPERATION DESCRIPTION OF OPERATING SEQUENCE the secondary interlock switch and primary interlock The following is a description of component functions during relay and is mechanically associated with the door so oven operation. that it will function in the following sequence. (1)When the door opens from the closed position, the OFF CONDITION primary interlock relay (RY2) and secondary interlock Closing the door activates the door sensing switch and switch open their contacts. And
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MICROWAVE MICROWAVE R-530EK R-530EW The time of supplementary cooking is determined by experi- ment with each food category and inputted into the LSI. An example of how sensor works: (POTATOES) 1. Potatoes at room temperature. Vapor is emitted very slowly. 2. Heat Potatoes. Moisture and humidity is emitted rapidly. You can smell the aroma as it cooks. AH SENSOR 3. Sensor detects moisture and humidity and calculates cooking time and variable power. Cooking Sequence. 1. Touch one of the SENSOR pad
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R-530EK R-530EW SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. NOTE: Indicates components with potential above 250 V. 2. CLOCK APPEARS ON DISPLAY. MAGNETRON MONITOR TEMP. FUSE 20A FUSE COM. N.O. A2 CAPACITOR 1.0μF AC 2300V (RY-2) (RY-1) A1 PRIMARY INTERLOCK RELAY GRN CONTROL UNIT N.O. COM. 120V AC POWER B1 B2 60 Hz TRANSFORMER N.C. DOOR CAVITY SENSING MONITOR TEMP. SWITCH SWITCH FUSE COM. OL TTM FM H.V. RECTIFIER MAGNETRON TURN- OVEN FAN TABLE LAMP MOTOR MOTOR SECONDARY INTERLOCK
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R-530EK R-530EW DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM open, the monitor fuse blows simultaneously with closing of the monitor switch contacts. The door is opened by pushing the open button on the control panel, refer to the Figure D-1. When the open button CAUTION: BEFORE REPLACING A BLOWN MONITOR is pushed, the open button pushes up the switch lever, and FUSE TEST THE DOOR SENSING SWITCH, then the switch lever pushes up the latch head. The latch PRIMARY INTERLOCK RELAY (RY2
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R-530EK R-530EW TROUBLESHOOTING GUIDE Never touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected. When troubleshooting the microwave oven, it is helpful to follow the Sequence of Operation in performing the checks. Many of the possible causes of trouble will require that a specific test be performed. These tests are given a procedure letter which will be found in the "Test Procedure "section. IMPORTANT: If the oven becomes inoperative because of
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R-530EK R-530EW CK = Check / RE = Replace TEST PROCEDURE RE REAB C D EE F F G H RE RE CK I CK CK CKJK L M N POSSIBLE CAUSE AND DEFECTIVE PARTS PROBLEM CONDITION Home fuse or circuit breaker blows when power cord is plugged into wall receptacle. Monitor fuse blows when power cord is plugged into wall receptacle. Any letters or indicators do not appear in display when power cord is first plugged OFF CONDITION into wall outlet. Display does not operate properly when STOP/CLEAR key is touched.
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R-530EK R-530EW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER A MAGNETRON ASSEMBLY TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm. 5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament lead
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R-530EK R-530EW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER (HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO MEASURE THE FILAMENT AND HIGH VOLTAGE.) C HIGH VOLTAGE RECTIFIER TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance across the terminals and observe, reverse the
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R-530EK R-530EW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 5. Reconnect all leads removed from components during testing. 6. Reinstall the outer case (cabinet). 7. Reconnect the power supply cord after the outer case is installed. 8. Run the oven and check all functions. CAUTION: IF THE TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERA- TURE, REPLACE TEMPERATURE FUSE. F SECONDARY INTERLOCK SWITCH TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door
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R-530EK R-530EW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER with the door opened (in this condition the plunger of the monitor switch is pushed in), the meter should indicate an open circuit. If improper operation is indicated, the switch may be defective. After testing the monitor switch, reconnect the wire lead to the monitor switch (COM) terminal and check the continuity of the monitor circuit. 5. Reconnect all leads removed from components during testing. 6. Reinstall the outer case (cab
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R-530EK R-530EW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 4) Reconnect the power supply cord after the outer case is installed. 5) Run the oven and check all functions. The following symptoms indicate a defective key unit. a) When touching the pads, a certain pad produces no signal at all. b) When touching a number pad, two figures or more are displayed. c) When touching the pads, sometimes a pad produces no signal. If the Key unit is defective. 1) Disconnect the power supply cord, and the
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R-530EK R-530EW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER the above method may be used (after clearing the control unit) to determine if the control unit or key pad is at fault. 5. Reconnect all leads removed from components during testing. 6. Re-install the outer case (cabinet). 7. Reconnect the power supply cord after the outer case is installed. 8. Run the oven and check all functions. G 1 G 2 G 3 G 4 G 5 G 6 G 7 G 8 Beverage 1 2 3 4 5 G 9 Center Fresh From the Rice 6 7 8 9 0 G10 vegeta
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OMIF DU T1 12 AC XA VH VRS1 R-530EK R-530EW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MENU 1ST STAGE 2ND STAGE Steaks, chops or fish LEVEL TIME LEVEL TIME 0.5lb 70% 30sec. 40% 15sec. (5) If improper operation is indicated, the control unit is probably defective and should be checked. M FOIL PATTERN ON THE PRINTED WIRING BOARD TEST To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on the PWB, this foil pattern acts as a fuse. 1. Foil pa
