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Sharp R-1512 Service Manual
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Sharp R-1512 Service Manual

Sharp R-1512 Service Manual

Over the range microwave oven
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See also: Instruction and Installation Manual
This is a supplemental Service Manual for Model R-1512. This model is quite similar to base model R-1500 and R-1501.
Use this supplemental manual together with the Base Models Service Manual (Reference No. is S8123R1500X//)
for complete operation, service information, etc..
BEFORE SERVICING ...................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL ................................................................................................................ 1
MICROWAVE MEASUREMENT PROCEDURE ................................................................................................... 2
FOREWORD AND WARNING ............................................................................................................................... 3
PRODUCT SPECIFICATIONS .............................................................................................................................. 4
CONTROL PANEL ................................................................................................................................................. 5
OPERATION .......................................................................................................................................................... 5
TROUBLESHOOTING GUIDE .............................................................................................................................. 7
TEST PROCEDURE .............................................................................................................................................. 8
TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................ 14
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 19
PICTORIAL DIAGRAM ........................................................................................................................................ 22
POWER UNIT CIRCUIT ...................................................................................................................................... 23
LSI UNIT CIRCUIT ............................................................................................................................................... 24
PRINTED WIRING BOARD ................................................................................................................................. 25
PARTS LIST ........................................................................................................................................................ 26
PACKING AND ACCESSORIES ......................................................................................................................... 28
SHARP CORPORATION
SERVICE MANUAL
MODEL
SENSOR
Light
Fan
Stop
Clear
In the interest of user-safety the oven should be restored to its
Start
Minute Plus
original condition and only parts identical to those specified should
be used.
WARNING TO SERVICE PERSONNEL: Microwave ovens con-
tain circuitry capable of producing very high voltage and
current. Contact with the following parts may result in a
severe, possibly fatal, electrical shock. (High Voltage Capaci-
tor, High Voltage Power Transformer, Magnetron, High Volt-
age Rectifier Assembly, High Voltage Harness etc..)

TABLE OF CONTENTS

31
OVER THE RANGE
MICROWAVE OVEN
R-1512
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
R-1512
S73M213R1512E
Page

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Summary of Contents for Sharp R-1512

  • Page 1: Table Of Contents

    Rectifier Assembly, High Voltage Harness etc..) This is a supplemental Service Manual for Model R-1512. This model is quite similar to base model R-1500 and R-1501. Use this supplemental manual together with the Base Models Service Manual (Reference No. is S8123R1500X//) for complete operation, service information, etc..

  • 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-1512 R-1511 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-1512 R-1511 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...

  • Page 5: Foreword And Warning

    Information for the SHARP OVER THE RANGE MICROWAVE OVEN, R-1512. The model R-1512 is quite similar to base model R-1500 and R-1501 (Reference No. is S8123R1500X//). It is recommended that service personnel carefully study the entire text of this manual and base model service manual so that they will be qualified to render satisfactory customer service.

  • Page 6: Product Specifications

    R-1512 R-1511 PRODUCT SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 14 Amperes 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 15- 9/16" Depth 16- 1/4"...

  • Page 7: Control Panel

    10 sec. control unit. (Figure O-1). P-50 (approx. 50% power) 18 sec. 14 sec. 1. The display will show "SHARP SIMPLY THE BEST P-40 (approx. 40% power) 16 sec. 16 sec. PRESS CLEAR AND PRESS CLOCK". To set any program or set the clock, you must first P-30 (approx.
  • Page 8 R-1512 R-1511 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-1512 R-1511 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...

  • Page 10: Test Procedure

    R-1512 R-1511 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.)
  • Page 11 R-1512 R-1511 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.
  • Page 12 R-1512 R-1511 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER FRESH DEFROST CUSTOM LIGHT ROLLS / WATER CENTER HELP HI / LO MUFFINS KEEP SENSOR WARM REHEAT COOK POPCORN HI / LO PLUS CENTER FRESH STOP BAKED VEGETABLES POTATOES CLEAR START FROZEN...
  • Page 13 R-1512 R-1511 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.
  • Page 14 R-1512 R-1511 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.
  • Page 15 R-1512 R-1511 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-1512 R-1511 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...
  • Page 17 R-1512 R-1511 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-1512 R-1511 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 R-1512 R-1511 Pin No. Signal Description Common data signal. COM2 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.
  • Page 20 R-1512 R-1511 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.

  • Page 21: Component Replacement And Adjustment Procedure

    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: Oven Lamp Removal

    R-1512 R-1511 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 R-1512 R-1511 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.
  • Page 24 R-1512 R-1511...

  • Page 25: Power Unit Circuit

    R-1512 R-1511 D1-D4 1N4002 – – R2 510 1/2w Q1 2SB1238 R1 330 1w – AC(N) 10∝/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...

  • Page 26: Lsi Unit Circuit

    R-1512 R-1511 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG7 SEG6 SEG6 SEG5 SEG5 SEG4 SEG4 SEG3 SEG3 SEG2 SEG2 SEG1 SEG1 SEG0 SEG0 COM4 COM3(LCD) COM3 VREF XOUT...

  • Page 27: Printed Wiring Board

    R-1512 R-1511 CN-C CN-E CN-A CN-B Figure S-4. Printed Wiring Board...

  • Page 28: Parts List

    R-1512 PARTS LIST Note: The parts marked “ ” may cause undue microwave exposure. The parts marked “*” are used in voltage more than 250V. " §" MARK: PARTS DELIVERY SECTION REF. NO. PART NO. § DESCRIPTION Q'TY CODE ELECTRIC PARTS...
  • Page 29 R-1512 REF. NO. PART NO. § DESCRIPTION Q'TY CODE 3- 2-2 JBTN-B144MRF0 Open button 3- 2-3 JBTN-B126MRF0 Select button 3- 2-4 MSPRTA050WRE0 Button spring 3- 3 LHLD-B018MRF0 LCD holder 3- 4 PSHEPB023MRE0 LED sheet 3- 5 XEPSD30P10XS0 Screw; 3mm x 10mm...

  • Page 30: Packing And Accessories

    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 R-1512 OVEN AND CABINET PARTS 6-1-5 6-12 4-10 6-16 1-17 4-12 1-12 4-19 1-14 6-14 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...
  • Page 32 R-1512 CONTROL PANEL PARTS 3-2-1 DOOR PARTS 3-2-3 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 '03 SHARP CORP. (6S2.400E) Printed in U.S.A...

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