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Sharp R-216(G) Service Manual

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CAUTION, MICROWAVE RADIATION.................................................................................................... 1
WARNING .................................................................................................................................................1
SERVICING ............................................................................................................................................. 2
PRODUCT SPECIFICATIONS .................................................................................................................5
GENERAL INFORMATION....................................................................................................................... 5
APPEARANCE VIEW .............................................................................................................................. 6
OPERATION SEQUENCE ........................................................................................................................7
FUNCTION OF IMPORTANT COMPONENTS ....................................................................................... 8
TROUBLESHOOTING GUIDE .................................................................................................................9
TEST PROCEDURE .............................................................................................................................. 10
CONTROL PANEL ASSEMBLY ............................................................................................................ 15
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE .................................................. 18
MICROWAVE MEASUREMENT ........................................................................................................... 24
TEST DATA AT A GLANCE .................................................................................................................. 25
WIRING DIAGRAM ................................................................................................................................ 25
PICTORIAL DIAGRAM .......................................................................................................................... 26
CONTROL PANEL CIRCUIT .................................................................................................................. 27
PRINTED WIRING BOARD .................................................................................................................... 28
PARTS LIST .......................................................................................................................................... 29
SERVICE MANUAL
MODELS
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In interests of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.

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SHARP CORPORATION
35
MICROWAVE OVEN
R-216(G)
R-216(IN)
R-216(W)
R-216(Y)
R-216(G)
R-216(IN)
R-216(W)
R-216(Y)
S5207R216PHW/
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Summary of Contents for Sharp R-216(G)

  • Page 1: Table Of Contents

    COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE ..........18 MICROWAVE MEASUREMENT ......................24 TEST DATA AT A GLANCE ........................25 WIRING DIAGRAM ..........................25 PICTORIAL DIAGRAM .......................... 26 CONTROL PANEL CIRCUIT ........................27 PRINTED WIRING BOARD ........................28 PARTS LIST ............................29 SHARP CORPORATION...

  • Page 2: Caution Microwave Radiation

    R-216(G) R-216(IN) R-216(W) R-216(Y) CAUTION MICROWAVE RADIATION Personnel should not be exposed to the microwave energy which may radiate from the magnetron or other microwave generating devices if it is improperly used or connected. All input and output microwave connections, waveguides, flanges and gaskets must be secured.

  • Page 3: Warning

    MICROWAVE OVEN R-216(G)/ R-216(IN)/ R-216(W)/ R-216(Y) GENERAL INFORMATION GENERAL IMPORTANT INFORMATION This Manual has been prepared to provide Sharp Corp. Service engineers with Operation and Service Information. APPEARANCE VIEW It is recommended that service engineers carefully study the entire text of this manual, so they will be qualified to render satisfactory customer service.

  • Page 4: Servicing

    Sharp beveelt ten sterkste aan dat, voor zover mogelijk, defecten worden opgespoord wanneer de stekker uit het Wanneer alle reparaties zijn uitgevoerd en de oven weer in stopcontact is gehaald.
  • Page 5 är kallt utför Du 3 steg kontroller och kontrollerar anslutningarna till varje enskild komponent på nytt. Sharp rekommenderar att felsökning sker med strömmen fränkopplad. Ibland kan det var nödvändigt att koppla på När all service är klar och ugnen ihopskruvad skall ugnens strömmen efter det att höljet avlägsnats, utför da 3 Steg...
  • Page 6 Sharp raccomanda, nei limiti del possibile, che la ricerca dei guasti avvenga in assenza di alimentazione elettrica. In alcuni casi tuttavia, può essere necessario alimentare Dopo aver portato a termine le operazioni di manutenzione l'apparecchio dopo aver rimosso la scatola esterna.

  • Page 7: Product Specifications

    R-216(G) R-216(IN) R-216(W) R-216(Y) PRODUCT DESCRIPTION SPECIFICATION ITEM DESCRIPTION Power Requirements 230 Volts 50 Hertz Single phase, 3 wire earthed Power Consumption 1.18 kW Power Output 800 W nominal of RF microwave energy (measured by method of IEC 60705) Operating fequency 2450 MHz Case Dimensions Width 460 mm...

  • Page 8: Appearance View

    R-216(G) R-216(IN) R-216(W) R-216(Y) APPEARANCE VIEW OVEN 1. Ventilation openings 7. Coupling 2. Oven lamp 8. Control panel 3. Door hinges 9. Waveguide cover 4. Door safety latches 10. Power supply cord 5. See through door 11. Turntable 6. Door seals sealing surfaces 12.

  • Page 9: Operation Sequence

    R-216(G) R-216(IN) R-216(W) R-216(Y) OPERATION SEQUENCE OFF CONDITION monitored latch switch SW1 and 2nd. interlock relay control switch (SW3) are made open. Closing the door activates all door interlock switches (monitored latch switch and 2nd. interlock relay control 6. MONITOR SWITCH CIRCUIT switch).

  • Page 10: Function Of Important Components

    R-216(G) R-216(IN) R-216(W) R-216(Y) FUNCTION OF IMPORTANT COMPONENTS THERMAL CUT-OUT TC2 125˚C (OVEN) DOOR OPEN MECHANISM The thermal cut-out located on the top of the oven cavity The door is opened by pulling the door, refer to the Figure is designed to prevent damage to the oven if the foods in D-1.

  • Page 11: Troubleshooting Guide

    R-216(G) R-216(IN) R-216(W) R-216(Y) TROUBLESHOOTING GUIDE When troubleshooting the microwave oven, it is helpful to IMPORTANT: If the oven becomes inoperative because follow the Sequence of Operation in performing the of a blown fuse F1 in the monitored latch checks. Many of the possible causes of trouble will require switch SW1 - 2nd.

  • Page 12: Test Procedure

    R-216(G) R-216(IN) R-216(W) R-216(Y) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER MAGNETRON TEST NEVER TOUCH ANY PART IN THE CIRCUIT WITH YOUR HAND OR AN INSULATED TOOL WHILE THE OVEN IS IN OPERATION. CARRY OUT 3D CHECKS. Isolate the magnetron from the high voltage circuit by removing all leads connected to the filament terminal.
  • Page 13 R-216(G) R-216(IN) R-216(W) R-216(Y) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER Room temperature ....... To = 21˚C Initial temperature ....T1 = 11°C Temperature after (52 + 3) = 55 sec..............T2 = 21°C Temperature difference Cold-Warm ..............∆T1 = 10°C Measured output power The equation is “P = 80 x ∆T”...
  • Page 14 R-216(G) R-216(IN) R-216(W) R-216(Y) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER C. A normal capacitor shows continuity for a short time (kick) and then a resistance of about 10MΩ after it has been charged. D. A short-circuited capacitor shows continuity all the time. E.
  • Page 15 R-216(G) R-216(IN) R-216(W) R-216(Y) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER FUSE F1 CARRY OUT 3D CHECKS. If the fuse F1 is blown when the door is opened, check the monitored latch switch SW1, 2nd. interkock relay RY2, 2nd. interkock relay control switch SW3 and monitor switch SW2. If the fuse F1 is blown by incorrect door switching, replace the defective switch(s) and the fuse F1.
  • Page 16 R-216(G) R-216(IN) R-216(W) R-216(Y) TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER TACT SWITCH TEST 1. CARRY OUT 3D CHECKS. 2. Remove the control unit from the control panel. 3. By using an ohmmeter, check the tact switch operation. 4. When the tact switch is not depressed, an ohmmeter should indicate an open circuit. When the tact switch is depressed, an ohmmeter should indicate a short circuit.

  • Page 17: Control Panel Assembly

    R-216(G) R-216(IN) R-216(W) R-216(Y) CONTROL PANEL ASSEMBLY OUTLINE OF CONTROL PANEL Control Unit 5) Buzzer Circuit Control unit consists of LSI, power source circuit, synchro- The buzzer is responsive to signals from the LSI to emit nizing signal circuit, reset circuit, buzzer circuit, encoder audible sounds (tact switch touch sound and comple- circuit and indicator circuit.
  • Page 18 R-216(G) R-216(IN) R-216(W) R-216(Y) Pin No. Signal Description IN/OUT Terminal not used. Connected to 0V. Signal coming from touch tact switch. When tact switch SW2 is touched, a signal will be input into P21. When tact switch is not touched, the signal is held at “H” level. Signal coming from encoder.
  • Page 19 R-216(G) R-216(IN) R-216(W) R-216(Y) SERVICING B. On some models, the power supply cord be- 1. Precautions for Handling Electronic Components tween the touch control panel and the oven This unit uses CMOS LSI in the integral part of the proper is so long enough that they may be circuits.

  • Page 20: Component Replacement And Adjustment Procedure

    Oven lamp, Magnetron, High voltage transformer manners. and Oven cavity. 1. Before wiring, 3) Sharp edge: 1) Disconnect the power supply. Bottom plate, Oven cavity, Waveguide flange, 2) Open the door and wedge the door open. Chassis support and other metallic plate.
  • Page 21 R-216(G) R-216(IN) R-216(W) R-216(Y) 6. Remove the two (2) screws holding the transformer to bottom plate from below. Wire tight 7. Remove the two (2) screws holding the transformer to bottom plate from above. 8. Remove the transformer. HIGH VOLTAGE COMPONENTS REMOVAL (HIGH VOLTAGE CAPACITOR, HIGH VOLTAGE RECTIFIER ASSEMBLY AND H.V.
  • Page 22 Re-install 3. Turn the oven over. 1. Remove the any sharp edges on the turntable motor 4. Cut the four (4) bridges holding the turntable motor cover and the bottom plate with the cutting pliers. cover to the bottom plate with the cutting pliers as 2.
  • Page 23 R-216(G) R-216(IN) R-216(W) R-216(Y) Install the fan blade to the fan motor shaft according Install the fan motor assembly to the oven cavity by to the following procedure. fitting the tabs of the fan duct into the holes of the oven Hold the center of the bracket which supports the cavity and the waveguide flange.
  • Page 24 R-216(G) R-216(IN) R-216(W) R-216(Y) MONITORED LATCH SWITCH, 2ND. INTERLOCK RELAY CONTROL SWITCH AND MONITOR SWITCH REMOVAL 1. CARRY OUT 3D CHECKS. in the middle position. The 2nd. interlock relay control 2. Disconnect wire leads from the switches and control switch is in the upper position. panel.
  • Page 25 R-216(G) R-216(IN) R-216(W) R-216(Y) DOOR REPLACEMENT REMOVAL After any service, make sure of the following : 1. Disconnect the power supply cord. 1. Door latch heads smoothly catch latch hook through 2. Open the door slightly. latch holes and that latch head goes through center of 3.

  • Page 26: Microwave Measurement

    R-216(G) R-216(IN) R-216(W) R-216(Y) MICROWAVE MEASUREMENT Recommended instruments are: After adjustment of monitored latch switch, 2nd. interlock NARDA 8100 relay control switch, monitor switch and door are com- NARDA 8200 pleted individually or collectively, the following leakage HOLADAY HI 1500 test must be performed with a survey instrument and it SIMPSON 380M must be confirmed that the result meets the requirements...

  • Page 27: Test Data At A Glance

    R-216(G) R-216(IN) R-216(W) R-216(Y) TEST DATA AT A GLANCE PARTS SYMBOL VALUE / DATA Fuse T6.3A 250V High voltage fuse 0.6A 5 kV Thermal cut-out 95°C Off / 75˚C On Thermal cut-out 125°C Off Oven lamp 240 V 25W High voltage capacitor 0.91µF AC 2100V Filament <...

  • Page 28: Pictorial Diagram

    R-216(G) R-216(IN) R-216(W) R-216(Y)

  • Page 29: Control Panel Circuit

    R-216(G) R-216(IN) R-216(W) R-216(Y)

  • Page 30: Printed Wiring Board

    R-216(G) R-216(IN) R-216(W) R-216(Y) LD11 LD12 LD13 LD14 LD15 LD16 LD17 (J3) (J5) (J7) (JF) (JC) CN - B (JD) CN - A (J1) Figure S-3. Printed Wiring Board...

  • Page 31: Parts List

    R-216(G) R-216(IN) R-216(W) R-216(Y) PARTS LIST ∆ Note: The parts marked " " may cause undue microwave exposure. The parts marked "*" are used in voltage more than 250V. REF. NO. PART NO. DESCRIPTION Q'TY CODE ELECTRIC PARTS RC-QZA295WRZZ High voltage capacitor High voltage capacitor (Interchangeable)for production use RC-QZA218WRE0 QFS-CA027WRZZ...
  • Page 32 R-216(G) R-216(IN) R-216(W) R-216(Y) ∆ Note: The parts marked " " may cause undue microwave exposure. The parts marked "*" are used in voltage more than 250V. REF. NO. PART NO. DESCRIPTION Q'TY CODE VRD-B12EF472J Resistor 4.7k ohm 1/4W VRD-B12EF472J Resistor 4.7k ohm 1/4W...

  • Page 33: Packing And Accessories

    R-216(G) R-216(IN) R-216(W) R-216(Y) REF. NO. PART NO. DESCRIPTION Q'TY CODE SCREWS AND WASHERS 7- 1 XHPSD40P08K00 Screw : 4mm x 8mm 7- 2 LX-EZA042WRE0 Special screw 7- 3 LX-WZA028WRE0 Special washer 7- 4 XOTSE40P08000 Screw : 4mm x 8mm [R-216(W)/(IN)/(Y))] 7- 4 XOTSF40P08000 Screw : 4mm x 8mm [R-216(G)]...
  • Page 34 R-216(G) R-216(IN) R-216(W) R-216(Y) OVEN PARTS 7-10 4-14 4-11 4-13 4-10 4-12...
  • Page 35 R-216(G) R-216(IN) R-216(W) R-216(Y) CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS Actual wire harness may be different than illustration.
  • Page 36 R-216(G) R-216(IN) R-216(W) R-216(Y) COPYRIGHT © 2002 BY SHARP CORPORATION ALL RIGHTS RESERVED. 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.

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R-216(in)R-216(w)R-216(y)

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