Sharp R-1514F Supplemental Service Manual
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Sharp R-1514F Supplemental Service Manual

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  • Page 2: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy

    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 3: Warning To Service Personnel

    R-1514 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..

  • Page 4: Microwave Measurement Procedure

    R-1514 MICROWAVE MEASUREMENT PROCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven should not exceed 1mW/cm at any point 5cm or more from the external surface of the oven, measured prior to acquisition 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.
  • Page 5 R-1514 FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP OVER THE RANGE MICROWAVE OVEN, R-1514. The model R-1514 are quite similar to base models R-1500 and R-1501 (Reference No. is S8123R1500X//).

  • Page 6: Product Specification

    R-1514 PRODUCT SPECIFICATION ITEM DESCRIPTION 120 Volts / 14 Amperes / 1600 Watts Power Requirements 60 Hertz Single phase, 3 wire grounded Power Output 1000 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 29-15/16" Height 16-1/4" Depth 15- 9/16" Cooking Cavity Dimensions Width 17-1/2"...

  • Page 8: Sensor Cooking Condition

    R-1514 SENSOR COOKING CONDITION 3. Sensor detects moisture and humidity and calculates cooking time and variable power. Using the Sensor Cooking function, the foods are cooked or defrosted without figuring time, power level or quantity. When Cooking Sequence. the oven senses enough steam from the food, it relays the 1.

  • Page 9: Troubleshooting Guide

    R-1514 SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. COOKING TIME PROGRAMMED. 3. VARIABLE COOKING CONTROL "HIGH". 4. "START" BUTTON PRESSED. CAVITY MAGNETRON THERMAL CUT-OUT TEMPERATURE FUSE CONTROL UNIT N.O. COM. FUSE DOOR POWER SENSING TRANSFORMER SWITCH HOOD FAN THERMAL High CUT OUT...

  • Page 10: Test Procedures

    R-1514 Q CK TEST PROCEDURE POSSIBLE CAUSE DEFECTIVE PARTS PROBLEM CONDITION The oven stops and "ERROR" is displayed or does not end during Sensor Cooking SENSOR condition. (Oven does not shut off after a cup of water is boiling by Sensor Cooking.) COOKING CONDITION Oven stops at 32 seconds after starting.

  • Page 11: Component Test

    R-1514 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 3) To discharge high voltage capacitor, wait for 60 seconds. 4) Replace the key unit. 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.

  • Page 12: Relay Test

    R-1514 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER FRESH DEFROST CUSTOM LIGHT ROLLS / CENTER HELP WATER HI / LO MUFFINS KEEP SENSOR REHEAT WARM COOK POPCORN HI / LO PLUS CENTER FRESH STOP BAKED POTATOES VEGETABLES CLEAR START FROZEN POWER TIMER BEVERAGE ROLLS /...
  • Page 13 R-1514 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER (8) The oven will operate as follows. Menu 1ST STAGE 2ND STAGE Steaks/Chops LEVEL TIME LEVEL TIME 0.5lbs 57sec. 17sec. (9) If improper operation is indicated, the control unit is probably defective and should be checked. 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.

  • Page 14: Ah Sensor Test

    R-1514 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 9) Disconnect the power supply cord. 10) Open the door and block it open. 11) To discharge high voltage capacitor, wait for 60 seconds. 12) Reconnect all leads removed from components during testing. 13) Re-install the hood intake duct R.

  • Page 15: Checking Control Unit

    R-1514 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER (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: 9-1.

  • Page 16: Touch Control Panel Assembly

    R-1514 TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units as shown in the touch control panel circuit. 3) Synchronizing Signal Circuit The power source synchronizing signal is available in (1) Key Unit order to compose a basic standard time in the clock (2) Control Unit (The Control unit consists of LSI Unit and circuit.
  • Page 17 R-1514 Pin No. Signal Description Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an analog input terminal from the AH sensor circuit, and connected to the A/D converter built into the LSI. 11-13 P57-P55 Used for initial balancing of the bridge circuit (absolute humidity sensor).
  • Page 18 R-1514 Pin No. Signal Description Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of G7 line keys on key matrix is touched. Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of G6 line keys on key matrix is touched.

  • Page 19: Absolute Humidity Sensor Circuit

    R-1514 Pin No. Signal Description COM2 Common data signal. Connected to LCD signal COM3. COM1 Common data signal. Connected to LCD signal COM2. COM0 Common data signal. Connected to LCD signal COM1. Power source voltage input terminal. Standard voltage for LCD. ABSOLUTE HUMIDITY SENSOR CIRCUIT then the detector circuit starts to function and the LSI (1) Structure of Absolute Humidity Sensor...
  • Page 20 R-1514 SERVICING 1. Precautions for Handling Electronic Components 5) Re-connect the power supply cord after the outer This unit uses CMOS LSI in the integral part of the case is installed. circuits. When handling these parts, the following 6) Run the oven and check all functions. precautions should be strictly followed.

  • Page 21: Warning For Wiring

    4. If the outer case (cabinet) is not fitted. WARNING FOR WIRING To prevent an electric shock, take the following pre- 3) Sharp edge: cautions. Bottom plate, Oven cavity, Waveguide flange, 1. Before wiring, Chassis support and other metallic plate.

  • Page 22: Control Panel Assembly, Control Unit And Key Unit Removal

    R-1514 to the oven cavity top plate, the oven cavity front flange Sensor ground wire AH sensor and the fan duct. And remove the hood intake duct R. Screws 5. Disconnect the connector CN-F of AH sensor from the Hole control unit.

  • Page 23: Oven Lamp Socket Removal

    R-1514 5. Disconnect only the connector CN-F from the control by turning the socket counterclockwise. unit. It is not necessary to disconnect other connectors 7. Remove the oven lamp from the socket by turning the or wire leads from the control unit. oven lamp.
  • Page 24 R-1514...
  • Page 25 R-1514 D1-D4 1N4002 – – R2 510 1/2w Q1 2SB1238 R1 270 2w – AC(N) 10µ/35v OVEN LAMP OVEN LAMP TURNTABLE TURNTABLE MOTOR MOTOR FAN MOTOR FAN MOTOR KRC243M AC(H) BUZZER PKM22EPT MICRO. MICRO. HOOD MOTOR HIGH HOOD MOTOR HOOD HOOD MOTOR THERMAL COM.
  • Page 26 R-1514...
  • Page 27 R-1514 CN-C CN-E CN-A CN-B Figure S-4. Printed Wiring Board...

  • Page 28: Parts List

    R-1514 PARTS LIST Note: The parts marked "∆" may cause undue microwave exposure. The parts marked "*" are used in voltage more than 250V. " δ" MARK: PARTS DELIVERY SECTION δ REF. NO. PART NO. DESCRIPTION Q'TY CODE ELECTRIC PARTS 1- 1 FH-DZB016MRY0 High voltage rectifier assembly...

  • Page 29: Oven Parts

    R-1514 REF. NO. PART NO. δ DESCRIPTION Q'TY CODE 3- 2-2 FDECAB030MRK0 Open button 3- 2-3 JBTN-B138MRF0 Select button 3- 2-4 MSPRTA050WRE0 Button spring 3- 2-5 PSHEPB101MRE0 Button rubber 3- 2-6 PCAP-B007MR10 Button cap 3- 3 LHLD-B018MRF0 LCD holder 3- 4 PSHEPB023MRE0 LED sheet 3- 5...

  • Page 30: Screws,Nuts And Washers

    1. MODEL NUMBER 2. REF. NO. 3. PART NO. 4. DESCRIPTION Order Parts from the authorized SHARP parts Distributor for your area. Defective parts requiring return should be returned as indicated in the Service Policy. PACKING AND ACCESSORIES 4-3 TURNTABLE TRAY...

  • Page 31: Oven And Cabinet Parts

    R-1514 OVEN AND CABINET PARTS 6-1-5 6-12 4-10 6-14 1-17 4-12 1-12 4-19 1-14 4-24 4-23 4-17 4-16 4-18 4-13 4-17 6-13 6-10 4-16 1-15 4-20 4-13 4-15 4-11 1-16 1-13 1-10 1-11 4-21 1-11 4-14 4-22 1-10 4-25 1-13 1-16 6-11 2-7-2...
  • Page 32 R-1514 CONTROL PANEL PARTS 3-2-1 DOOR PARTS 3-2-5 3-2-3 3-2-6 3-2-2 3-2-4 5-2-3 5-2-3 5-2-1 5-2-2 MISCELLANEOUS 6-1-1 6-1-4 6-1-5 6-1-2 6-1-6 6-1-7 6-1-3 6-15 '02 SHARP CORP. (8M2.42E) Printed in U.S.A...

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