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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 the following parts may result in a severe, possibly fatal, electrical shock. (Inverter unit
that includes High Voltage Capacitor, High Voltage Power Transformer, High Voltage Rectifier and Heat sink etc.,
and Magnetron, High Voltage Harness etc..)
BEFORE SERVICING ...................................................................................................... INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL ................................................................................................................ 1
MICROWAVE MEASUREMENT PROCEDURE ................................................................................................... 2
FOREWORD AND WARNING ............................................................................................................................... 3
PRODUCT SPECIFICATIONS .............................................................................................................................. 4
GENERAL INFORMATION ................................................................................................................................... 5
OPERATION .......................................................................................................................................................... 7
TROUBLESHOOTING GUIDE ............................................................................................................................ 11
TEST PROCEDURE ............................................................................................................................................ 13
TOUCH CONTROL PANEL ASSEMBLY ............................................................................................................ 22
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ................................................................ 29
PICTORIAL DIAGRAM ........................................................................................................................................ 38
POWER UNIT CIRCUIT ...................................................................................................................................... 39
LSI UNIT CIRCUIT ............................................................................................................................................... 41
PRINTED WIRING BOARD ................................................................................................................................. 43
PARTS LIST ........................................................................................................................................................ 44
PACKING AND ACCESSORIES ......................................................................................................................... 49
SHARP CORPORATION
SERVICE MANUAL
OVER THE RANGE
MICROWAVE OVEN
MODELS
TABLE OF CONTENTS
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
S54M1R2110JW/
R-2110JK
R-2110JW
R-2120JK
R-2120JW
R-2110JK
R-2110JW
R-2120JK
R-2120JW
Page
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Related Manuals for Sharp R-2110JK
Summary of Contents for Sharp R-2110JK
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Page 1: Table Of Contents
R-2110JK R-2110JW R-2120JK R-2120JW SERVICE MANUAL S54M1R2110JW/ OVER THE RANGE MICROWAVE OVEN R-2110JK MODELS R-2110JW R-2120JK R-2120JW 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. -
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 Measure- ment 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-2110JK R-2110JW R-2120JK R-2120JW 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) Inverter unit that includes High Voltage Capacitor, High Voltage Power Transformer, High Voltage Rectifier, Heat sink etc., and Magnetron, High... -
Page 4: Microwave Measurement Procedure
R-2110JK R-2110JW R-2120JK R-2120JW SERVICING FOR INVERTER UNIT WARNING This inverter unit contains circuitry capable of producing high voltage and high current. Contact with any part of the high voltage will result in electrocution. DO NOT ACCESS ANY PARTS OF INVERTER UNIT WITH POWER SUPPLY CONNECTED. -
Page 5: Foreword And Warning
MICROWAVE OVEN R-2110JK / R-2110JW / R-2120JK / R-2120JW GENERAL INFORMATION FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the OPERATION SHARP OVER THE RANGE MICROWAVE OVEN, R-2110JK, R- 2110JW, R-2120JK, R-2120JW. -
Page 6: Product Specifications
R-2110JK R-2110JW R-2120JK R-2120JW PRODUCT SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 14 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 1200 watts (IEC TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 29-15/16" Height 17" Depth 15- 9/16"... -
Page 7: General Information
R-2110JK R-2110JW R-2120JK R-2120JW GENERAL INFORMATION 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 accordance with the National Electrical Code and local codes and ordinances. - Page 8 R-2110JK R-2110JW R-2120JK R-2120JW R-2110JW R-2120JW NOTE: Some one-touch cooking features such as "MINUTE PLUS" are disabled after three minutes when the oven is not in use. These features are automatically enabled when the door is opened and closed or the STOP/...
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Page 9: Operation
R-2110JK R-2110JW R-2120JK R-2120JW OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during (1) When the door opens from a closed position, the oven operation. primary interlock switch and secondary interlock switch open their contacts, and then the monitor OFF CONDITION switch contacts close. - Page 10 R-2110JK R-2110JW R-2120JK R-2120JW resistance reaches the value set according to the menu, VENTILATION METHODS HOT AIR EXHAUST supplementary cooking is started. The time of supplemen- 1. VERTICAL VENTING tary cooking is determined by experiment with each food For this venting method, hot air rising from the category and input into the LSI.
- Page 11 R-2110JK R-2110JW R-2120JK R-2120JW SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. CLOCK APPEARS ON DISPLAY PRIMARY INTERLOCK SWITCH OVEN THERMAL CUT-OUT CONTROL UNIT FUSE STOP SWITCH HOOD FAN THERMAL High CUT OUT N.C. OVEN LAMP RELAY INVERTER UNIT HOOD 120 V AC.
- Page 12 R-2110JK R-2110JW R-2120JK R-2120JW DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM monitor switch contacts. CAUTION: BEFORE REPLACING A BLOWN MONITOR The door is opened by pushing the open button on the FUSE TEST THE STOP SWITCH, PRIMARY control panel, refer to the Figure D-1.
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Page 13: Troubleshooting Guide
R-2110JK R-2110JW R-2120JK R-2120JW 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. - Page 14 R-2110JK R-2110JW R-2120JK R-2120JW CK = Check / RE = Replace CK LOW VOLTAGE CK NO POWER AT OUTLET RE SHORTED IN POWER CORD CK OPENED OR SHORTED WIRING CK HOOD MOTOR CAPACITOR RE HOOD LAMP OR SOCKET RE STIRRER MOTOR...
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Page 15: Test Procedure
R-2110JK R-2110JW R-2120JK R-2120JW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MAGNETRON ASSEMBLY TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds. - Page 16 R-2110JK R-2110JW R-2120JK R-2120JW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER Chart for checking the defective inverter unit No power at full power output cooking Magnetron is defective. Exchange the magnetron. Exchange the Inverter unit Brown monitor fuse The secondary interlock switch, primary interlock Check the switches according to switch and the monitor switch are operating properly.
- Page 17 R-2110JK R-2110JW R-2120JK R-2120JW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 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 18 R-2110JK R-2110JW R-2120JK R-2120JW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER HOOD THERMAL CUT-OUT TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds.
- Page 19 R-2110JK R-2110JW R-2120JK R-2120JW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 1. Key Unit. NOTE ; 1) Check key unit ribbon connection before replacement. 2) Re-install the hood intake duct R with seven (7) screws. 3) Re-install the outer case (cabinet).
- Page 20 R-2110JK R-2110JW R-2120JK R-2120JW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER schematic and place a jumper wire between the pins that correspond to the STOP/CLEAR pad making momentary contact. If the control unit responds by clearing with a beep the key unit is faulty and must be replaced.
- Page 21 R-2110JK R-2110JW R-2120JK R-2120JW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER (6) Touch the “ START ” button. (7) The oven is in Easy defrost cooking condition. (8) The oven will operate as follows. Menu 1ST STAGE 2ND STAGE Steaks/Chops LEVEL...
- Page 22 R-2110JK R-2110JW R-2120JK R-2120JW 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 23 R-2110JK R-2110JW R-2120JK R-2120JW TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER (9) Reconnect the oven to the power supply and check the sensor cook operation as follows: 9-1. Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.
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Page 24: Touch Control Panel Assembly
R-2110JK R-2110JW R-2120JK R-2120JW TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL The touch control section consists of the following units 3) Synchronizing Signal Circuit as shown in the touch control panel circuit. The power source synchronizing signal is available in... - Page 25 R-2110JK R-2110JW R-2120JK R-2120JW DESCRIPTION OF LSI The I/O signal of the LSI is detailed in the following table. Pin No. Signal Description VL2-VL1 Power source voltage input terminal. Standard voltage for LCD. AN7-AN5 Terminal to change cooking input according to the Model.
- Page 26 R-2110JK R-2110JW R-2120JK R-2120JW Pin No. Signal Description Terminal not used. Connected to GND through the pull-down resistor. RESET Auto clear terminal. Signal is input to reset the LSI to the initial state when power is applied. Clock signal is output to a memory IC (IC3).
- Page 27 R-2110JK R-2110JW R-2120JK R-2120JW Pin No. Signal Description 48-72 SEG24-SEG0 Segment data signal. Connected to LCD. The relation between signals are as follows: LSI signal (Pin No.) LCD (Pin No.) LSI signal (Pin No.) LCD (Pin No.) SEG 24 (48) ---------------- SEG24 (29)
- Page 28 R-2110JK R-2110JW R-2120JK R-2120JW HUMIDITY SENSOR CIRCUIT As the sensor cooking proceeds, the food is heated to (1) Structure of Humidity Sensor generate moisture by which the resistance balance of The humidity sensor includes two thermistors as shown the bridge circuit is deviated to increase the voltage in the illustration.
- Page 29 R-2110JK R-2110JW R-2120JK R-2120JW SERVICING 1. Precautions for Handling Electronic Components repair all the controls (sensor-related ones included) of This unit uses CMOS LSI in the integral part of the the touch control panel while keeping it connected to the circuits.
- Page 30 R-2110JK R-2110JW R-2120JK R-2120JW PRECAUTIONS FOR USING LEAD-FREE SOLDER 1. Employing lead-free solder The "Control unit PWB and Inverter unit 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.
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Page 31: 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: All parts cautions. (Bottom plate, Oven cavity, Waveguide flange, 1. Before wiring, Chassis support and other metallic plate.) 1) Disconnect the power supply cord. - Page 32 R-2110JK R-2110JW R-2120JK R-2120JW 4. Remove the three (3) screws holding the hood louver to Left tab the oven cavity front face plate. 5. Pull the hood louver from the oven cavity by pushing the right and left tabs of the hood louver to remove.
- Page 33 R-2110JK R-2110JW R-2120JK R-2120JW HOOD FAN THERMAL CUT-OUT REMOVAL 1. Disconnect the power supply cord and remove the oven flange, the fan duct and base plate R. And remove the from wall and remove outer case. (Refer to procedure of hood intake duct R.
- Page 34 R-2110JK R-2110JW R-2120JK R-2120JW metal pieces may be produced. KNACK FOR INSTALLING FAN BALDE * Do not touch the pliers to the coil of the fan motor 1. Hold the center of the bracket which supports the shaft because the coil may be cut or damaged.
- Page 35 R-2110JK R-2110JW R-2120JK R-2120JW HOOD LAMP SOCKETS REMOVAL 6. Open the base cover. 1. Disconnect the power supply cord. 7. Screw the hood lamp off from the lamp socket. 2. Open the door and block it open. 3. To discharge the high voltage capacitor, wait for 60 seconds.
- Page 36 R-2110JK R-2110JW R-2120JK R-2120JW HUMIDITY SENSOR REMOVAL 1. Disconnect the power supply cord, remove the oven of the humidity sensor should be positioned through from wall, and remove outer case. (Refer to procedure of the hole of the oven cavity top plate (right).
- Page 37 R-2110JK R-2110JW R-2120JK R-2120JW STOP SWITCH, PRIMARY INTERLOCK SWITCH, SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL 1. Disconnect the power supply cord and remove the oven 9. Remove each switch from the latch hook by pushing the from wall and remove outer case. (Refer to procedure of one (1) stopper tab holding each switch.
- Page 38 R-2110JK R-2110JW R-2120JK R-2120JW DOOR REPLACEMENT After any servicing, make sure of the following : DOOR ASSEMBLY REMOVAL 1. Door latch heads smoothly catch latch hook through 1. Disconnect the power supply cord. latch holes and that latch head goes through center of 2.
- Page 39 R-2110JK R-2110JW R-2120JK R-2120JW 9. Pry the choke cover by inserting a putty knife in order shown in Figure C-3. Door stopper 10.Now choke cover is free from door panel and door frame. NOTE: When carrying out any repair to the door, do not...
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Page 40: Pictorial Diagram
R-2110JK R-2110JW R-2120JK R-2120JW... -
Page 41: Power Unit Circuit
R-2110JK R-2110JW R-2120JK R-2120JW 10G471K VRS1 PA154DR D -- D1: 11N4002 2SB1238 1W 1K AC(H) AC(N) 10uF/35V OL, FM, INV. COM OL/FM/ DU24D1-1P(M)-R INV. COM KRC243M PS1420P02AT BUZZER 1SS270A x 2 H.MOTOR HIGH HOOD MOTOR HOOD G5S-1 24V H.MOTOR THERMO... - Page 42 R-2110JK R-2110JW R-2120JK R-2120JW 10G471K VRS1 PA154DR D -- D1: 11N4002 2SB1238 270 2W AC(H) AC(N) 10uF/35V OL, FM, INV. COM OL/FM/ DU24D1-1P(M)-R KRC243M INV. COM PS1420P02AT BUZZER 1SS270A x 2 H.MOTOR HIGH HOOD MOTOR HOOD G5S-1 24V THERMO H.MOTOR...
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Page 43: Lsi Unit Circuit
R-2110JK R-2110JW R-2120JK R-2120JW... - Page 44 R-2110JK R-2110JW R-2120JK R-2120JW...
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Page 45: Printed Wiring Board
R-2110JK R-2110JW R-2120JK R-2120JW Figure S-4. Printed Wiring Board... -
Page 46: Parts List
Base plate R 2- 4 HDEC-B001MRF0 Bottom sash [R-2120JK] [R-2110JK] 2- 4 HDEC-B005MRF0 Bottom sash [R-2120JW] [R-2110JW] 2- 5 GCABUB131MRP0 Outer case cabinet [R-2120JK] [R-2110JK] 2- 5 GCABUB132MRP0 Outer case cabinet [R-2120JW] [R-2110JW] 2- 6 TMAPCB080MRR0 Schematic diagram 2- 7 FANGKB019MRY0... - Page 47 4-30 LANGTB066MRP0A Oven lamp angle 4-31 PFILWB005MRP0 Lamp filter DOOR PARTS 5- 1 DDORFB084MRK0 Door panel assembly [R-2120JK] [R-2110JK] 5- 1 DDORFB085MRK0 Door panel assembly [R-2120JW] [R-2110JW] 5- 2 FCOV-B265MRK0 Door frame assy [R-2120JK] [R-2110JK] 5- 2 FCOV-B266MRK0 Door frame assy [R-2120JW] [R-2110JW]...
- Page 48 To have your order filled promptly and correctly, please furnish the following information. 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.
- Page 49 R-2110JK R-2110JW R-2120JK R-2120JW OVEN AND CABINET PARTS 6-1-5 6-13 4-10 1-12 4-29 4-12 6-16 1-14 4-19 4-30 4-16 6-14 4-13 6-10 1-13 4-18 4-20 4-31 1-11 4-16 4-11 4-21 4-13 6-11 4-26 4-27 4-28 4-26 4-22 4-15 4-25 4-23...
- Page 50 R-2110JK R-2110JW R-2120JK R-2120JW DOOR PARTS CONTROL PANEL PARTS MISCELLANEOUS...
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Page 51: Packing And Accessories
R-2110JK R-2110JW R-2120JK R-2120JW PACKING AND ACCESSORIES Bottom sash and 2-10 Bottom sush angle 6-15 SCALE PLATE (x 2) Rack TOP PAD 6-12 GREASE FILTER (x 2) TOP AND WALL TEMPLATE OPERATION MANUAL DOOR PROTECTOR INSTALL MATERIAL ASSEMBLY WRAP COVER... - Page 52 No part of this publication may be reproduced, stored in retrieval systems, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. 2004 SHARP CORP. (5S2.530E) Printed in U.S.A...