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R-530EW-T
In the interest of user-safety the oven should be restored to its original condition and only parts identical to those
specified should be used.
WARNING TO SERVICE PERSONNEL: Microwave ovens contain circuitry capable of producing very high
voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock.
(High Voltage Capacitor, High Voltage Power Transformer, Magnetron, High Voltage Rectifier Assembly,
High Voltage Harness etc..)
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE EXPO-
SURE TO EXCESSIVE MICROWAVE ENERGY
CHAPTER 1. WARNING TO SERVICE PERSONNEL
CHAPTER 2. MICROWAVE MEASUREMENT PRO-
CEDURE
CHAPTER 3. FOREWORD AND WARNING
CHAPTER 4. PRODUCT DESCRIPTION
CHAPTER 5. GENERAL INFORMATION
CHAPTER 6. OPERATION
CHAPTER 7. TROUBLESHOOTING GUIDE
SERVICE MANUAL
MODELS
R-530ES-T
CONTENTS
CHAPTER 8. TEST PROCEDURES
CHAPTER 9. TOUCH CONTROL PANEL ASSEMBLY
CHAPTER 10. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
CHAPTER 11. COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE
CHAPTER 12. CIRCUIT DIAGRAMS
Parts List
SX705R530EPW/
MICROWAVE OVEN
R-530EK-T
R-530EW-T
R-530ES-T
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
R530EW
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Summary of Contents for Sharp R-530EK-T
- Page 1 TopPage R530EW SERVICE MANUAL SX705R530EPW/ MICROWAVE OVEN R-530EK-T MODELS R-530EW-T R-530EW-T R-530ES-T R-530ES-T In the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified should be used. WARNING TO SERVICE PERSONNEL: Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock.
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Page 2: Table Of Contents
CONTENTS PRECAUTIONS TO BE OBSERVED BEFORE [11] K: KEY UNIT TEST........8-5 AND DURING SERVICING TO AVOID POSSIBLE [12] L: RELAY TEST .......... 8-5 EXPOSURE TO EXCESSIVE MICROWAVE ENER- [13] M: DEFROST CENTER TEST....8-6 [14] N: FOIL PATTERN ON THE PRINTED WIRING BOARD TEST...... -
Page 3: Precautions To Be Observed Before
Before servicing an operative unit, perform a microwave emission check as per the Microwave Measurement Procedure outlined in this service manual. If microwave emissions level is in excess of the specified limit, contact SHARP ELECTRONICS CORPORATION immediately @1-800-237-4277. If the unit operates with the door open, service person should 1) tell the user not to operate the oven and 2) contact SHARP ELECTRONICS CORPORATION and Food and Drug Administration's Center for Devices and Radiological Health immediately. -
Page 4: When The Testing Is Completed
R530EWT CHAPTER 1. R530EWT WARNING TO SERVICE PERSONNEL Service Manual Microwave ovens contain circuitry capable of producing 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 Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc.. Read the Service Manual carefully and follow all instructions. -
Page 5: Chapter 2. Microwave Measurement
R530EWT CHAPTER 2. R530EWT MICROWAVE MEASUREMENT PROCEDURE Service Manual [1] Requirements: 1. Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/ at any point 5cm or more from the external surface of the oven, measured prior to acquisition by a purchaser, and thereafter (through the use- ful life of the oven), 5 mW/cm at any point 5cm or more from the external surface of the oven. -
Page 6: Chapter 3. Foreword And Warning
Service Manual [1] FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVENS, R-530EK-T, R-530EW-T and R-530ES-T. 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. -
Page 7: Chapter 4. Product Description
R530EWT CHAPTER 4. R530EWT PRODUCT DESCRIPTION Service Manual [1] SPECIFICATIONS ITEM DESCRIPTION 120 Volts Power Requirements 60 Hertz Single phase, 3 wire grounded Power Consumption 1700W / Approx. 14.3 Amperes 1200 W nominal of RF microwave energy (IEC Test procedure) Power Output Operating frequency 2450 MHz Width 24"... -
Page 8: Chapter 5. General Information
R530EWT CHAPTER 5. R530EWT GENERAL INFORMATION Service Manual [1] GROUNDING INSTRUCTIONS This oven is equipped with a three prong grounding plug. It must be plugged into a wall receptacle that is properly installed and grounded in accor- dance with the National Electrical Code and local codes and ordinances. In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the electric current. -
Page 9: Chapter 6. Operation Description Of Operating Se- Quence
When oven is plugged in, 120 volts A.C. is supplied to the control unit. (Figure O-1). VARI-MODE ON TIME OFF TIME 1) The display will show “SHARP SIMPLY THE BEST PRESS CLEAR 100 PERCENT (100% power) 32 sec. 0 sec. AND PRESS CLOCK”. -
Page 10: Oven Schematic
R530EWT 2. The coil of shut-off relay (RY-1) is energized, the turntable motor, oven lamp and cooling fan motor are turned on, but the power AH SENSOR transformer is not turned on. 3. After about 16 seconds, the cook relay (RY-2) is energized. The power transformer is turned on, microwave energy is produced and first stage is started. -
Page 11: Description And Function Of Components
R530EWT 2. Cooking Condition SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. COOKING TIME PROGRAMMED. 3. VARIABLE COOKING CONTROL "P-HI/ 100 PERCENT". 4. START PAD TOUCHED. MAGNETRON TEMP. FUSE CAPACITOR 1.0mF AC 2300V (RY-2) (RY-1) PRIMARY INTERLOCK RELAY CONTROL UNIT N.O. - Page 12 R530EWT 4. TURNTABLE MOTOR The turntable motor rotates the turntable located on the bottom of the oven cavity, so that the foods on the turntable cook evenly during cooking. The turntable may turn in either direction. 5. COOLING FAN MOTOR The cooling fan motor drives a blade which draws external cool air.
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Page 13: Troubleshooting Guide
R530EWT CHAPTER 7. R530EWT TROUBLESHOOTING GUIDE Service Manual 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. -
Page 14: Chapter 8. Test Procedures
R530EWT CHAPTER 8. R530EWT TEST PROCEDURES Service Manual [1] 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. -
Page 15: D: High Voltage Capacitor Test
R530EWT 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. NOTE: Be sure to use an ohmmeter that will supply a forward bias voltage of more than 6.3 volts. [4] D: HIGH VOLTAGE CAPACITOR TEST 1. -
Page 16: G: Monitor Switch Test
R530EWT 2. PRIMARY INTERLOCK SYSTEM 2.1. DOOR SENSING SWITCH 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 switch and connect the ohmmeter to the common (COM.) and normally open (NO) terminal of the switch. The meter should indicate an open circuit with the door open and a closed circuit with the door closed. -
Page 17: I: Noise Filter Test
R530EWT 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. [9] I: NOISE FILTER TEST 1. Disconnect the power supply cord, and then remove outer case. 2. -
Page 18: K: Key Unit Test
R530EWT g) The figure of all digits flicker. 3) Other possible problems caused by defective control unit. a) Buzzer does not sound or continues to sound. b) Clock does not operate properly. c) Cooking is not possible. 3. If the Key unit or the Control unit is defective. 1) Disconnect the power supply cord, and then remove outer case. -
Page 19: M: Defrost Center Test
R530EWT 7. Remove the outer case and check voltage between the cabinet side terminal of the relay RY1 and Pin No. 1 of 2 pin connector (A) on the control unit with an A.C. voltmeter. The meter should indicate 120 volts, if not check oven circuit. RY1 and RY2 Relay Test These relays are operated by D.C. -
Page 20: O: Ah Sensor Test
R530EWT 3) Discharge high voltage capacitor. 4) Disconnect the leads to the primary of the power transformer. 5) Ensure that these leads remain isolated from other components and oven chassis by using insulation tape. 6) After that procedure, re-connect the power supply cord. 7) Follow the troubleshooting guide given below for repair. - Page 21 R530EWT 6) Reconnect all leads removed from components during testing. 7) Re-install the outer case (cabinet). 8) Reconnect the power supply cord after the outer case is installed. 9) Reconnect the oven to the power supply and check the sensor cook operation as follows: a) Fill approximately 200 milliliters of tap water in a 1000 milliliter measuring cup.
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Page 22: Chapter 9. Touch Control Panel Assembly
R530EWT CHAPTER 9. R530EWT TOUCH CONTROL PANEL ASSEMBLY Service Manual [1] OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units. 3) Power Source Circuit (1) Key Unit This circuit generates voltages necessary in the control unit from the AC line voltage.In addition, the synchronizing signal is available (2) Control Unit (The Control Unit consists of Power Unit and CPU in order to compose a basic standard time in the clock circuit. -
Page 23: Absolute Humidity Sensor Circuit
R530EWT [2] ABSOLUTE HUMIDITY SENSOR CIRCUIT 1. Structure of Absolute Humidity Sensor 1)Absolute humidity sensor circuit The absolute humidity sensor includes two thermistors as shown in the illustration. One thermistor is housed in the closed vessel filled with dry 620k air while another in the open vessel. -
Page 24: Servicing For Touch Control Panel
R530EWT [3] SERVICING FOR TOUCH CONTROL PANEL 1. Precautions for Handling Electronic Components b) On some models, the power supply cord between the touch control panel and the oven proper is so long enough that This unit uses CMOS LSI in the integral part of the circuits. When han- they may be separated from each other. -
Page 25: Chapter 10. Precautions For Using Lead
R530EWT CHAPTER 10. R530EWT PRECAUTIONS FOR USING LEAD-FREE SOLDER Service Manual Employing lead-free solder The “Main PWB” of this model employs lead-free solder. This is indicated by the “LF” symbol printed on the PWB and in the service manual. The suffix letter indicates the alloy type of the solder. -
Page 26: Chapter 11. Component Replacement
1. Door does not close firmly. 4. If the outer case (cabinet) is not fitted. WARNING FOR WIRING To prevent an electric shock, take the following precau- 3) Sharp edge: tions. Bottom plate, Oven cavity, Waveguide flange, 1. Before wiring, Chassis support and other metallic plate. -
Page 27: Power Transformer Removal
R530EWT CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE. DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. NOTE: When replacing the outer case, the 2 special Torx screws must be reinstalled in the same locations. Special screw Screw Driver (Type: TORX T20 H or... -
Page 28: Oven Lamp Removal
4. Where the corners have been snipped off bend corner areas flat. 8. After replacement use the one (1) screw XOTS740P10000 to fit the No sharp edges must be evident after removal of the turntable turntable motor cover. motor cover. -
Page 29: Door Sensing Switch/Secondary Interlock Switch And Monitor Switch Removal
R530EWT CAUTION: Make sure that no metal pieces enter the gap between 2. Hold the center of the bracket which supports the shaft of the fan the rotor and the stator of the fan motor because the motor on the flat table. rotor is easily shaven by pliers and metal pieces may 3. -
Page 30: Door Replacement
R530EWT 2. After adjustment, check the following. Latch Heads 1. In and out play of door remains less than 0.5mm when in the latched position. First check upper position of latch hook, pushing and pulling upper portion of door toward the oven face. Then check lower portion of the latch hook, pushing and pulling Door Sensing Door... - Page 31 R530EWT 4. SEALER FILM 1. Put the adhesive tape on the backing film of the sealer film as shown in Fig. C-6. 2. Tear the backing film by pulling the adhesive tape. 3. Put the pasted side of the sealer film on the door panel. Sealer film Backing film Adhesive tape...
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Page 32: Chapter 12. Circuit Diagrams Pictorial Diagram
R530EWT CHAPTER 12. R530EWT CIRCUIT DIAGRAMS Service Manual [1] Pictorial Diagram Figure S-1. Pictorial Diagram 12 – 1... -
Page 33: Power Unit Circuit
R530EWT [2] Power Unit Circuit CN-C 12PIN LEAD WIRE HARNESS Q2 2SB1238 R4 27 R5 4.7k D1-D4 1N4002L CN-A 1SS270A 1SS270A Ð Ð R3 510 1/2w Q1 2SB1238 R2 680 1/2w SP1 PKM22EPT Q3 KRC243M BUZZER OVEN LAMP R6 3.3k TURNTABLE OVEN LAMP MOTOR... -
Page 34: Lsi Unit Circuit
R530EWT [3] LSI Unit Circuit Figure S-3. LSI Unit Circuit 12 – 3... -
Page 35: Printed Wiring Board Of Power Unit
R530EWT [4] Printed Wiring Board of Power Unit (CN - C) CN - C CN - B CN - A (J1) (CN - D) (D10) Figure S-4. Printed Wiring Board of Power Unit 12 – 4... - Page 36 R530EWT 12 – 5...
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Page 37: Parts List
DOOR AND CONTROL PANEL PARTS for R-530ES-T DOOR AND CONTROL PANEL PARTS for R-530EK-T/530EW-T INDEX TOP PAD ASSEMBLY FPADBA685WRKZ DOOR PROTECTION SHEET SPADPA204WRE0 CABINET COVER for R-530EK-T & R530ES-T SPAKHA026WREZ PLASTIC BAG SSAKHA012WRE0 FOAM SHEET SPAKHA013WREZ OPERATION MANUAL RECIPE CARD BOTTOM PAD ASSEMBLY... - Page 38 R530EWT [1] OVEN PARTS 1-14 4-16 4-13 1-11 1-13 4-14 forR-530EK-T/EW-T 1-12 7-11 4-15 4-12 7-10 7-11 forR-530ES-T 4-10 1-10 4-11...
- Page 39 Screw : 3mm x 6mm XCBS730P06000 Screw : 4mm x 8mm XHTS740P08RV0 LX-CZA070WRE0 Special screw (Torx tamper proof screw) Screw : 4mm x 12mm (for R-530EK-T) XOTS840P08000 Screw : 4mm x 12mm (for R-530EW-T/ES-T) XOTS740P12000 Screw : 4mm x 8mm XHPS740P08K00...
- Page 40 R530EWT [2] DOOR AND CONTROL PANEL PARTS for R-530EK-T/530EW-T for R-530EK-T/530EW-T Actual wire harness may be different from illustration. 3-2-1 PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [2] DOOR AND CONTROL PANEL PARTS for R-530EK-T/530EW-T CONTROL PANEL PARTS Control unit...
- Page 41 R530EWT PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [2] DOOR AND CONTROL PANEL PARTS for R-530EK-T/530EW-T Latch spring MSPRTA084WRE0 Door panel FDORFB075MRT0 Sealer film PSHEPB016MRE0 Choke cover GCOVHA523WRFZ Door screw XEPS730P06XS0 PGLSPA713WREZ Door glass (R-530EK-T) Door glass (R-530EW-T) PGLSPA714WREZ...
- Page 42 R530EWT PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [3] DOOR AND CONTROL PANEL PARTS for R-530ES-T Door panel FDORFB075MRT0 Sealer film PSHEPB016MRE0 Choke cover GCOVHA523WRFZ MISCELLANEOUS Main wire harnes FW-VZC149WREZ TINSEB148WRRZ Operation manual Recipe card TCADCA933WRRZ...
- Page 43 R530EWT INDEX PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK [ D ] [ Q ] DPWB-A558DRKZ 2-3-1 QFS-TA013WRE0 1-1-12 DPWB-A559DRKZ 3-3-1 QFS-TA014WRE0 1-1-7 QSW-MA085WRE0 1-1-6 [ F ] FACCDA083WRE0 1-1-11 QSW-MA147WRZZ 1-1-6 FACCDA085WREZ 1-1-11 [ R ] FACCDA103WREZ...
- Page 44 EndPage COPYRIGHT © 2007 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in retrieval systems, or transmitted in anyform or by any means, electronic, mechanical, photocopying, re- cording, or other wise, without prior written permission of the publisher.