Sharp R-CD1800M Service Manual
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Sharp R-CD1800M Service Manual

Sharp R-CD1800M Service Manual

Commercial microwave oven
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REFER TO TECH BULLETIN MW339 FOR RCD2200M HVC UPDATE INFORMATION.
DOCUMENTS INCLUDED IN THIS SERVICE MANUAL . (Page 54 /55)
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. OPERATION
CHAPTER 6. TROUBLESHOOTING GUIDE
SERVICE MANUAL
COMMERCIAL MICROWAVE OVEN
MODELS
CONTENTS
CHAPTER 7. TEST PROCEDURES
CHAPTER 8. TOUCH CONTROL PANEL ASSEMBLY
CHAPTER 9. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
CHAPTER 10. COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE
CHAPTER 11. CIRCUIT DIAGRAMS
Parts List
RCD2200M
S2801RCD22MP
R-CD1800M
R-CD2200M
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

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  • Page 1 DOCUMENTS INCLUDED IN THIS SERVICE MANUAL . (Page 54 /55) SERVICE MANUAL S2801RCD22MP COMMERCIAL MICROWAVE OVEN R-CD1800M MODELS R-CD2200M 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: Table Of Contents

    CONTENTS PRECAUTIONS TO BE OBSERVED BEFORE CHAPTER 8. TOUCH CONTROL PANEL ASSEM- AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENER- SPECIAL FUNCTION FOR SERVICING ..8-1 SERVICING FOR BRINTED WIRING BOARDS............. 8-6 CHAPTER 1. WARNING TO SERVICE PERSON- CHAPTER 9.

  • 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

    RCD2200M CHAPTER 1. RCD2200M 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

    RCD2200M CHAPTER 2. RCD2200M MICROWAVE MEASUREMENT PROCEDURE   Service Manual A. 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 FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVENS, R-CD2200M and R-CD1800M. 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

    RCD2200M CHAPTER 4. RCD2200M PRODUCT DESCRIPTION   Service Manual [1] SPECIFICATIONS ITEM DESCRIPTION R-CD1800M R-CD2200M Power Requirements Single phase 230/208V, 60Hz, A.C. only 2.7kW 3.2kW Power Consumption 230V-12.3A 230V-14A 208V-13.5A 208V-16A Power Output 1800W Operating frequency 2450 MHz 2200W Operating frequency 2450 MHz 17-1/2”...

  • Page 8: Oven Diagram

    RCD2200M [3] OVEN DIAGRAM 1. OVEN 1. Touch control panels 2. Door latch openings 3. Ceramic shelf 4. Splash cover 5. Oven light 6. Air intake filter 4 18 3 7. Air intake openings 8. Door seals and sealing surfaces 9.

  • Page 9: Chapter 5. Operation Description Of Operating Se- Quence

    RCD2200M CHAPTER 5. RCD2200M OPERATION   Service Manual [1] DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during oven operation. 1. OFF CONDITION 2. The shut-off relay (RY-4) contacts close completing circuits to turn on the oven lamp and antenna motors. (For details, refer to Figure O-1) 3.

  • Page 10: Oven Schematic

    RCD2200M [2] OVEN SCHEMATIC 1. Off Condition SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. “ . “ APPEARS ON DISPLAY Figure O-1. Oven Schematic-Off Condition 2. Cooking Condition SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. SELECT TIME PAD TUCHED.. 3.

  • Page 11: Description And Function Of Components

    RCD2200M [3] DESCRIPTION AND FUNCTION OF COMPONENTS 1. DOOR OPEN MECHANISM 3. If the door is opened, and the contacts of the primary interlock relay and secondary interlock switch of the same circuit fail to open, the 1. The handle lever is pulled. monitor fuse blows simultaneously with closing of the monitor 2.
  • Page 12 RCD2200M During cooking, they operate. After cooking, they will operate at least 4. The large electric currents flow through the high voltage winding of for 1 minute and the maximum operating time is 4 minutes. When the the high voltage transformer. temperature of the magnetron thermistor becomes bellow 110°C, the 5.

  • Page 13: Chapter 6. Troubleshooting Guide

    RCD2200M CHAPTER 6. RCD2200M 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 RCD2200M 6 – 2...
  • Page 15 RCD2200M SPECIFICATION OF ERROR Outline Operation when error occurs Display in operation usually When a basic performance and the function are ruined Displaying and heating stop EE0, EE1, EE2, EE3, EE8 When the dangers of the state of the high temperature and the ignition, etc. are Displaying and heating stop foreseen When you mistake the setting of the heating time...

  • Page 16: Chapter 7. Test Procedures

    RCD2200M CHAPTER 7. RCD2200M TEST PROCEDURES   Service Manual [1] A: MAGNETRON ASSEMBLY TEST 1. Disconnect the power supply cord, and then remove outer case and rear cover. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4.

  • Page 17: D: High Voltage Capacitor (1) And/Or (2) Test

    RCD2200M 4. Isolate the high voltage rectifier assembly from the HV circuit. The high voltage rectifier can be tested using an ohmmeter set to its highest range. Connect the ohmmeter across the terminal B+C of the high voltage rectifier and note the reading obtained. Reverse the meter leads and note this second reading.

  • Page 18: F: Primary Interlock System Test

    RCD2200M [6] F: PRIMARY INTERLOCK SYSTEM TEST 1. DOOR SENSING SWITCH 1. Disconnect the power supply cord, and then remove outer case and rear cabinet. 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 19: I: Fuse 12A (1) (2) Test

    RCD2200M 3. Discharge high voltage capacitor. 4. If the monitor fuse is blown when the door is opened, check the primary interlock relay RY1, secondary interlock switches (1), (2) and monitor switches (1), (2) according to the “TEST PROCEDURE” for those switches before replacing the blown monitor fuse. CAUTION: CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, TEST THE PRIMARY INTERLOCK RELAY, SECONDARY INTERLOCK SWITCHES, DOOR SENSING SWITCH AND MONITOR SWITCHES FOR PROPER OPERATION.

  • Page 20: L: Exhaust Thermistor Test

    RCD2200M 6. Reinstall the rear cover and the outer case (cabinet). 7. Reconnect the power supply cord after the rear cover and the outer case are installed. 8. Run the oven and check all functions. [12] L: EXHAUST THERMISTOR TEST The exhaust thermistor can be checked by using the Special function (SF-6).

  • Page 21: O: Control Unit Test

    RCD2200M 8) For the door key unit, check the open/short and/or connection of the switch unit and the harness, too. 10.If the Key unit is defective. 1) Disconnect the power supply cord, and then remove outer case and rear cover. 2) Open the door and block it open.

  • Page 22: Q: Relay Unit Test

    RCD2200M vi) If they are open, the power unit is defective [17] Q: RELAY UNIT TEST 1. Disconnect the power supply cord, and then remove outer case and rear cover. 2. Open the door and block it open. 3. Discharge two high voltage capacitors. 4.

  • Page 23: Special Function For Servicing

    RCD2200M CHAPTER 8. RCD2200M TOUCH CONTROL PANEL ASSEMBLY   Service Manual [1] SPECIAL FUNCTION FOR SERVICING This oven has the special functions for servicing as shown in the table 1 ~ 4. By using the special function, service person can check the using time or the using number of times for the electrical parts. Also service person can check the AC supply voltage and /or set the standard voltage.
  • Page 24 RCD2200M For example: Procedure to check the total cooking number of times (example, 957700 times) and using time (example, 1260 hours) of MG 1 and set 0 hours after MG1 is replaced. : no sound : 0.1 second sound : 2.0 second sound : (0.06 sec.
  • Page 25 RCD2200M #1 If there is no error “0" will be displayed. #2 If you touch SELECT POWER, all history are cleared. 3. Check of AC supply voltage (SF-5) You can check the current voltage of AC supply. For example: Procedure to check current voltage (In case of 230V For example: Procedure to check current voltage (In case of +13%) 230V)
  • Page 26 RCD2200M For example: In case the exhaust thermistor works incorrectly (275ml water load is necessary), the display will show “no” as follows. In that case, the exhaust thermistor should be checked or replaced. Operation Display Indicator Sound plug in (within 20 sec.) SELECT POWER SET MEMORY (within 20 sec.)
  • Page 27 (within 20 sec.) START STOP/CLEAR CUSTOM HELP cd-XX (model name) (date) XXXX (time) XXXX STOP/CLEAR #1: The display will show “cd22”, “cd18” or “cd12”. “cd22” means model R-CD2200M and “cd18” means model R-CD1800M and “cd12” means model R-CD1200M. 8 – 5...

  • Page 28: Servicing For Brinted Wiring Boards

    RCD2200M [2] SERVICING FOR BRINTED WIRING BOARDS 1. Precautions for Handling Electronic Components b) On some models, the power supply cord between the printed wiring boards and the oven proper is long enough that they This unit uses CMOS LSI in the integral part of the circuits. When han- may be separated from each other.

  • Page 29: Chapter 9. Precautions For Using Lead

    RCD2200M CHAPTER 9. RCD2200M 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 30: Chapter 10. Component Replacement And Adjustment Procedure Warnings

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

  • Page 31: Power Transformers (1) And/Or (2) Removal

    RCD2200M 10.Remove the eight (8) screws holding the rear cover and exhaust 12.Now, the rear cover with the fan motor and exhaust cover is free. cover to the bottom plate, power supply cord angle, intake duct and NOTE: Do not forget to re-connect the wire leads to the exhaust fan exhaust duct.

  • Page 32: Power Supply Cord Replacement

    RCD2200M 3. Discharge two high voltage capacitors. CAUTION: 1) DISCHARGE THE TWO HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR 4. Remove the two (2) screws holding the capacitor unit angle to the WIRING. intake duct assembly or the exhaust duct assembly. 2) DO NOT REPLACE ONLY THE HIGH VOLTAGE REC- 5.

  • Page 33: Exhaust Fan Removal

    RCD2200M [9] EXHAUST FAN REMOVAL 1. Disconnect the power supply cord and then remove the outer case 4. Make sure that the connector of the exhaust fan has been discon- and the rear cover, referring to “OUTER CASE AND REAR COVER nected from the wire harness.

  • Page 34: Door Sensing Switch/Secondary Interlock Switches (1), (2) And Monitor Switches (1), (2) Replacement

    RCD2200M NOTE: 1) Before attaching a new key unit, remove remaining adhe- sive on the panel fixing plate surfaces completely with a Cushion soft cloth soaked in alcohol. 2) When attaching the key unit to the panel fixing plate, adjust the lower edge and left edge of the key unit to the Vinyl tape (W 20mm x L 520mm) correct position of panel fixing plate.

  • Page 35: Door Replacement

    RCD2200M 2. After adjustment, check the following. Switch lever A 1. In and out play of door remains less than 0.5mm when in the Latch lever latched position. Latch hook 2. The door sensing switch and secondary interlock switches (1), (2) interrupt the circuit before the door can be opened.

  • Page 36: Door Disassembly

    RCD2200M [18] DOOR DISASSEMBLY 1. CHOKE COVER REMOVAL 3) Stick the key unit firmly to the key fixing plate by rubbing with soft cloth to prevent scratching. 1. Remove the door assembly from oven cavity, referring to “DOOR REMOVAL”. 4. SWITCH UNIT REMOVAL 2.
  • Page 37 RCD2200M 8. DOOR CASE REMOVAL 9. NOTE FOR POSITION OF HARNESS AND PIPE After removing door panel; Before the door panel is reinstalled, make sure that the pipe should be positioned at the correct place. And the harness should pass through 1.

  • Page 38: Circuit

    RCD2200M CHAPTER 11. RCD2200M CIRCUIT DIAGRAMS   Service Manual [1] Figure S-1. Pictorial Diagram High voltage High voltage rectifier (1) capacitor (1) Magnetron (1) Magnetron temp.fuse (1) Gray/Gray Asymmetric rectifier (1) Magnetron (1) Power Magnetron transformer (1) thermistor (1) High voltage capacitor (2) High voltage Magnetron...
  • Page 39 RCD2200M Connector CN-G Sensor harness White/Orange/Blue Control Sensor harness Connector CN-Z unit Connector CN-H Connector CN-F Green/Yellow Microwave sensor Antenna CPU harness Key unit ribbon cable sensor (1) Red/Blue Harness of Exhaust exhaust thermistor Brown/Red thermistor White/White Oven temp. Exhaust Main wire harness fuse thermistor...
  • Page 40 RCD2200M Main wire harness 3 WHT NOTE: The red and blue wire leads to the cabinet side terminals of RY2 and RY3 should go through inside the core of CT1 Cook relay (1) Main wire Cook relay (2) harness Primary interlock relay RY1 Main wire harness DC harness 22...
  • Page 41 RCD2200M [2] Figure S-2. Switching Power Supply Unit Circuit 11 – 4...
  • Page 42 RCD2200M [3] Figure S-3. Relay Unit Circuit NOTE: IF NOT SPECIFIED : 1/4W J% : 1SS133 RTRNPA162DR : NOT INSERT PARTS CN-D 1N4002x4 : CHECK POINT D292 D291 VRS1 S10K300 D294 D293 CN-A V-SENS D-12 GND-1 AC230V/208V O.L. PCJ-124D3M CN-E 24V-2 24V 2 24V-1...
  • Page 43 RCD2200M [4] Figure S-4. Control Unit/ Antenna sensor/ Microwave Sensor Circuit 11 – 6...
  • Page 44 RCD2200M [5] Figure S-5. Printed Wiring Board CONTROL UNIT ANTENNA SENSOR SWITCH UNIT RELAY UNIT MICROWAVE SENSOR SWITCHING POWER SUPPLY UNIT 11 – 7...

  • Page 45: Parts List

    WRAP COVER SSAKHA034WRE0 ACCESSORY PAD SPADFA657WREZ INSTRUCTION BOOK BOTTOM PAD ASSEMBLY TOUCH GUIDE FPADBA692WRKZ PACKING CASE SPAKCE599WREZ [R-CD2200M] SPAKCE603WREZ [R-CD1800M] This document has been published to be used for after sales service only. The contents are subject to change without notice.
  • Page 46 RCD2200M [1] OVEN PARTS 7-15 4-64 7-21 6-15 4-48 7-21 4-63 4-34 4-12 7-15 7-21 7-25 2-2-1 6-13 7-13 4-11 4-48 4-63 7-21 1-18 7-21 4-60 7-21 4-10 7-26 7-21 Vinyl insulation tape: 2-10 7-21 20mm (W) x 520mm (L) Please get the vinyl insulation 4-71 4-62...
  • Page 47 RCD2200M PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [1] OVEN PARTS ELECTRIC PARTS Sensor assembly (Exhaust thermistor) FDTCTA239WRKZ Exhaust motor assembly FMOT-A031WRKZ Order Part Number Temperature fuse 120C (Oven) QFS-TA015WRE0 Magnetron thermistor assembly DH-HZA017WRKZ RC-QZA400WRZZ Power supply cord [RCD2200M] FACCDA120WREZ (SEE Technical Power supply cord [RCD1800M]...
  • Page 48 RCD2200M PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [1] OVEN PARTS 4-39 Lower hinge MHNG-A592WRPZ 4-40 Antenna shaft NSFTPA045WRFZ 4-41 Clip l PCLIC0018WRE0 4-42 Hinge cover PCOVPA480WRFZ 4-43 Sensor cover PCOVPA496WRFZ 4-44 PFILWA064WRPZ Lamp filter 4-45 Lamp glass PGLSPA720WREZ 4-46 Cushion PCUSGA761WRPZ...
  • Page 49 RCD2200M [2] DOOR AND CONTROL PANEL PARTS 3-3-6 3-3-8 3-3-3 3-3-4 3-3-2 3-3-1 3-3-7 3-3-8 3-3-5 5-34 5-20 5-17 5-28 5-18 5-3-2 5-34 5-18 5-3-1 5-17 5-19 5-21 5-33 5-14 5-30 5-25 5-26 5-31 5-29 5-11 5-27 5-32 5-24 5-13 5-10 5-16 5-12...
  • Page 50 RCD2200M PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [2] DOOR AND CONTROL PANEL PARTS CONTROL PANEL PARTS CPU protect sheet PSHEPB332WREZ Control unit [RCD2200M] DPWB-A567DRKZ Control unit [RCD1800M] DPWB-A574DRKZ 3-3-1 Key unit FUNTKB179WREZ 3-3-2 C/P case GCOVAA389WRPZ 3-3-3 Display window GMADIA189WRFZ 3-3-4 Panel grille...
  • Page 51 RCD2200M INDEX PRICE PART PRICE PART PARTS CODE PARTS CODE RANK MARK RANK RANK MARK RANK LHLD-A314WRFZ 1-4-4 [ D ] LHLDWA011WRE0 2-6-12 DDAI-A214WRKZ 1-2-1 LHLDWA013WRE0 2-6-3 DDUC-A071WRKZ 1-4-2 LHLDWA063WREZ 1-6-11 DDUC-A072WRKZ 1-4-17 LRTNPA001DRZZ 2-5-30 DH-HZA017WRKZ 1-1-4 LRTNPA002DRZZ 2-5-31 DPWB-A565DRKZ 1-1-24 LSTPPA260WRFZ 2-5-11...
  • Page 52 RCD2200M PRICE PART PARTS CODE RANK MARK RANK PSHEPB279WREZ 1-2-7 PSHEPB323WREZ 1-4-69 PSHEPB325WREZ 2-5-21 PSHEPB332WREZ 2-3-1 PSKR-A462WRPZ 1-4-47 PSKR-A464WRPZ 1-4-55 [ Q ] QFS-BA011WRE0 1-1-8 QFSHDA009WRE0 1-1-9 QFS-TA014WRE0 1-1-15 QFS-TA015WRE0 1-1-3 QSOCLA026WRZZ 1-1-16 QSW-MA085WRE0 1-1-12 [ R ] RC-QZA336WRZZ 1-1-10 RC-QZA347WRZZ 1-1-10 RLMPTA105WRZZ...
  • Page 53 EndPage COPYRIGHT © 2008 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...
  • Page 54 Appliance-MWO Technical Bulletin Sharp Electronics Corporation Services and Support Group 4050 S Mendenhall Rd Memphis,Tn 38115 Number: MW-339 Date: November 2014 Model(s): RCD2200M Subject: RCD2200M Change of High Voltage Capacitor The HVC (Part Number RC-QZA336WRZZ) for the RCD2200M will be changed for Service Part requests only .The new Part Number for the HVC will be RC-QZA400WRZZ.
  • Page 55 Note: Two Assembly Kits Required per Unit EHKE-845 Page 2 of 2...

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