R- 410FK R-410FW SERVICE MANUAL S12M179R410FE MICROWAVE OVEN MODELS R-410FK R-410FK R-410FW 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.
R- 410FK R-410FW PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open.
R-410FK R-410FW 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. (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. Don't Touch ! Danger High Voltage When the testing is completed, 1.
R- 410FK R-410FW 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/cm2 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/cm2 at any point 5cm or more from the external surface of the oven.
R-410FK R-410FW SERVICE MANUAL PRODUCT DESCRIPTION MICROWAVE OVEN R-410FK/R-410FW GENERAL INFORMATION FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVENS, R-410FK, R-410FW. 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.
R- 410FK R-410FW SPECIFICATION ITEM DESCRIPTION PowerRequirements 120 Volts 14.3 Amperes, 1700 watts 60 Hertz Single phase, 3 wire grounded Power Output 1200 watts (IEC 705 TEST PROCEDURE) Operating frequency of 2450MHz Case Dimensions Width 21-21/32" Height 12-3/8" Depth 18-7/16" Cooking Cavity Dimensions Width 15-23/32" Height 9-21/32" Depth 17-7/8" 1.6 Cubic Feet Control Complement Touch Control System Clock ( 1:00 - 12:59 ) Timer (0 - 99 min.
R-410FK R-410FW a qualified electrician and have it replaced with a properly grounded three-pronged wall receptacle or have a grounding adapter properly grounded and polarized. If the extension cord must be used, it should be a 3-wire, 15 amp. or higher rated cord. Do not drape over a countertop or table where it can be pulled on by children or tripped over accidentally.
R- 410FK R-410FW OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a description of component functions during oven operation. and is mechanically associated with the door so that it will function in the following sequence. (1) When the door opens from the closed position, the secondary interlock relay (RY2) and primary interlock switch open their contacts. And contacts of the relay (RY1) remains closed. Then the monitor switch contacts close.
R-410FK R-410FW Note:* Indicates component SCHEMATIC NOTE: CONDITION OF OVEN 1. Door Closed 2. CLOCK APPEARS ON DISPLAY CAVITY TEMPERATURE FUSE C/T FUSE ORG ORG BRN ORG RED RED N.O. COM. B2 (RY1) CONTROL UNIT COM. ORG RED MONITOR SWITCH N.C. TURN TTM TABLE FM FAN MOTOR MOTOR OL OVEN LAMP HIGH VOLTAGE RECTIFIER COM. WHT WHT WHT GRY WHT HIGH VOLTAGE CAPACITOR F1 ORG ORG OVEN LAMP RELAY WHT WHT N.O.
R- 410FK R-410FW DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM The door is opened by pushing the open button on the control panel, refer to the Figure D-1. When the open button is pushed, the open button pushes up the switch lever, and then the switch lever pushes up the latch head. The latch heads are moved upward and released from latch hook. Now the door will open. Latch Heads Door Sensing Switch Door 3.
R-410FK R-410FW 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. These tests are given a procedure letter which will be found in the "Test Procedure "section.
R- 410FK R-410FW CK = Check / RE = Replace Home fuse or circuit breaker blows when power cord is plugged into wall receptacle C/T fuse blows when power cord is plugged into wall receptacle. OFF CONDITION All letters and indicators do not appear in display when power cord is first plugged into wall outlet. Display does not operate properly when STOP/CLEAR key is touched. (Buzzer should sound and ":" or time of day should appear in display.) Oven lamp does not light when door is opened.
R-410FK R-410FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 4. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm. 5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament leads and chassis ground. This test should indicate an infinite resistance. If there is little or no resistance the magnetron is grounded and must be replaced. 6.
R- 410FK R-410FW TEST PROCEDURES PROCEDURE LETTER C COMPONENT TEST HIGH VOLTAGE RECTIFIER TEST 1. 2. 3. 4. Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance across the terminals and observe, reverse the leads to the rectifier terminals and observe meter reading.
R-410FK R-410FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 5. If the C/T fuse is blown when the door is opened, check the secondary interlock relay, primary interlock switch and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown monitor fuse. CAUTION: BEFORE REPLACING A BLOWN C/T FUSE, TEST THE SECONDARY INTERLOCK RELAY, PRIMARY INTERLOCK SWITCH, DOOR SENSING SWITCH AND MONITOR SWITCH FOR PROPER OPERATION.
R- 410FK R-410FW TEST PROCEDURES PROCEDURE LETTER G MONITOR SWITCH TEST 1. 2. 3. 4. 5. 6. 7. 8. COMPONENT TEST Disconnect the power supply cord, and then remove outer case. Open the door and block it open. Discharge high voltage capacitor. Before performing this test, make sure that the primary interlock switch and the secondary interlock relay are operating properly, according to the above Switch Test Procedure. Disconnect the wire lead from the monitor switch (COM) terminal.
R-410FK R-410FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 2) Open the door and block it open. 3) Discharge high voltage capacitor. 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. 2. Control Unit The following symptoms indicate a defective control unit.
R- 410FK R-410FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 3 2 1 BONELESS POULTRY 2 START MINUTE PLUS BONE-IN POULTRY STEAKS/ CHOPS 10 8 GROUND MEAT FRESH VEGETABLES (DEFROST CENTER) 1 5 TIMER CLOCK 9 FROZEN ENTREES GROUND MEAT BAKED POTATOES (COOK CENTER) 4 8 STOP CLEAR 3 FROZEN VEGETABLES 7 0 POWER LEVEL 6 HOT WATER 7 6 REHEAT POPCORN 5 RICE KEEP WARM 14 13 12 9 4 11 6. Re-install the outer case (cabinet). 7.
R-410FK R-410FW TEST PROCEDURES PROCEDURE LETTER M COMPONENT TEST 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. 1. Foil pattern check and repairs. 1) Disconnect the power supply cord, and then remove outer case. 2) Open the door and block it open. 3) Discharge high voltage capacitor. 4) Follow the troubleshooting guide given below for repair.
R- 410FK R-410FW TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL This circuit consists of 22 segments and 3 common electrodes using a Liquid Crystal Display. The touch control section consists of the following units. (1) Key Unit (2) Control Unit (The Control Unit consists of Power Unit and LSI Unit). 3) Power Source Circuit This circuit generates voltages necessary in the control unit from the AC line voltage.
R-410FK R-410FW DESCRIPTION OF LSI LSI The I/O signal of the LSI is detailed in the following table. Pin No. Signal I/O Description 1-2 VL2-VL1 IN Power source voltage input terminal. Standard voltage for LCD. 3-6 AN7-AN4 IN Terminal to change cooking input according to the Model. By using the A/D converter contained in the LSI, DC voltage in accordance with the Model in operation is applied to set up its cooking constant. 7 P63 OUT 8 AN2 IN Input terminal to judge the model.
R- 410FK R-410FW Pin No. 27 Signal RESET I/O IN Description 28 P71 OUT 29 P70 IN Signal similar to P47. When either G9 line on key matrix is touched, a corresponding signal will be input into P70. 30 XIN IN Internal clock oscillation frequency input setting. The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to XOUT terminal. 31 XOUT OUT 32 VSS IN 33 P27 OUT Key strobe signal. Signal applied to touch-key section.
R-410FK R-410FW Pin No. 73/74 VCC/VREF Signal I/O IN Connected to GND. Description 75 AVSS IN Connected to VC. 76 COM3 OUT Terminal not used. 77 COM2 OUT Common data signal. Connected to LCD signal COM3. 78 COM1 OUT Common data signal. Connected to LCD signal COM2. 79 COM0 OUT Common data signal. Connected to LCD signal COM1. 80 VL3 IN Power source voltage input terminal. Standard voltage for LCD.
TOUCH CONTROL PANEL SERVICING R- 410FK R-410FW 1. Precautions for Handling Electronic Components This unit uses CMOS LSI in the integral part of the circuits. When handling these parts, the following precautions should be strictly followed. CMOS LSI have extremely high impedance at its input and output terminals. For this reason, it is easily influenced by the surrounding high voltage power source, static electricity charge in clothes, etc.
R-410FK R-410FW COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WARNING AGAINST HIGH VOLTAGE: Microwave ovens contain circuitry capable of producing very high voltage and current. Contact with the following parts may result in severe, possibly fatal, electric shock. (Example) High Voltage Capacitor, Power Transformer, Magnetron, High Voltage Rectifier Assembly, High Voltage Harness etc.. WARNING: To Avoid possible exposure to microwave energy, please follow the instructions below before operating the oven.
R- 410FK R-410FW CAUTION: 1. DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE. 2. DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. NOTE: When replacing the outer case, the 2 special Torx screws must be reinstalled in the same locations. Special screw Screw Driver (Type: TORX T20 H or GTXH20-100) POWER TRANSFORMER REMOVAL Re-install 1. Rest transformer on the bottom plate with its primary terminals toward the oven face plate. 2.
R-410FK R-410FW OVEN LAMP AND LAMP SOCKET REMOVAL 1. 2. 3. 4. 5. Disconnect the power supply cord and remove outer case. Open the door and block it open. Discharge high voltage capacitor. Remove the oven lamp from the oven lamp socket. Pull the wire leads from the oven lamp socket by pushing the terminal hole of the oven lamp socket with the small flat type screw driver. 6. Remove the oven lamp socket from the magnetron duct by turning the socket counterclockwise. 7.
R- 410FK R-410FW Installation 1. Remove remaining adhesive on the control panel frame surfaces with a soft cloth soaked in alcohol. 2. Make sure that the LCD sheet and the liquid crystal display is installed in position. 3. Remove the backing paper from the new membrane switch and ribbon cable. 4. Insert the ribbon cable of the membrane switch into the slit of the control panel frame. 5.
R-410FK R-410FW COOLING FAN MOTOR REMOVAL REMOVAL 1. Disconnect the power supply cord and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Disconnect the wire leads from the fan motor. 5. Remove the two (2) screws holding the fan motor to the oven cavity back plate. 6. Remove the fan blade from the fan motor shaft according to the following procedure. 7. Hold the edge of the rotor of the fan motor by using a pair of groove joint pliers.
R- 410FK R-410FW 3. Secure latch hook (with two (2) mounting screws) to oven flange. 4. Make sure that the monitor switch is operating properly and check continuity of the monitor circuit. Refer to chapter "Test Procedure" and Adjustment procedure. DOORSENSINGSWITCH/PRIMARYINTERLOCKSWITCHANDMONITORSWITCHADJUSTMENT 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor.
R-410FK R-410FW 9. Release the door panel from twelve (12) tabs of door frame. 10.Remove the door panel from the door frame. 11.Now, door panel with sealer film is free. 12.Tear sealer film from door panel. 13.Now, door panel is free. 14.Slide latch head upward and remove it from door frame with releasing latch spring from door frame and latch head. 15.Now, latch head and latch spring are free. 16.Remove door screen from door frame 17.Now, door frame is free. RE-INSTALL 1.
1 2 RY2 COM. 3 30 T1 SECONDARY INTERLOCK RELAY N.O. GRY G N.O. 4 5 COM. PRIMARY NO INTERLOCK SWITCH WHT GRY WHT WHT WHT TURNTABLE MOTOR Figure S-1. Pictorial Diagram C/T FUSE WHT BRN OVEN LAMP AND SOCKET WHT WHT RED ORG WHT FAN MOTOR MAGNETRON POWER TRANSFORMER H.V. RECTIFIER HIGH VOLTAGE WIRE A HIGH VOLTAGE CAPACITOR HIGH VOLTAGE COMPONENTS NOTE: Hot (ORG) wire must be connected to the terminal with blue mark on the oven light socket.
31 4 B1 B2 COM 5 D40 1SS270A D20 1SS270A RY2 RY1 1 T1 3 4 D3 D4 D2 D1-D4 1N4002 D1 + R1 560 1/2W C1 0.
R- 410FK R-410FW A B C D E F G H LIQUID CRYSTAL DISPLAY SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 COM3 COM2 C0M1 24 52 R62 15k R61 15k R60 15k 4 3 2 1 RICE 2 BONE-IN POULTRY STEAKS/ CHOPS GROUND MEAT FRESH VEGETABLES (DEFROST CENTER) START MINUTE PLUS 1 5 TIMER CLOCK 9 FROZEN ENTREES BAKED GROUND MEAT POTATOES (COOK CENTER) 4 8 STOP CLEAR 3 FROZEN VEGETABLES 7 0 POWER LEVEL 6 HOT WATER 9
R-410FK R-410FW 2 1 4 3 5 6 A A 2 1 WH-1 B LD4 LD3 LD2 LD1 B 2 1 LOT NO. WH-1 BFB DIP QKITPB037MRE0 C C D40 JP1 CN-B D R1 JP2 (J17) (J15) (J13) (J11) 2 D20 ZD1 1 SP1 D C2 C21 C1 B Q21 D2 D4 D3 D1 (J16) (J14) (J12) (J10) E 3 2 VRS1 RY1 C3 JP4 E D22 JP5 JP3 D21 E S P F F 4 1 T1 RY2 G RM 730 BF R (J1) G 0-V49 A72M RCM H H Figure S-5 .
R- 410FK R-410FW PARTS LIST ∆” may cause undue microwave exposure. Note: The parts marked “∆ The parts marked “*” are used in voltage more than 250V. "§" MARK: PARTS DELIVERY SECTION. REF. NO. PART NO.
R-410FK R-410FW REF. NO. PART NO.
R- 410FK R-410FW 2 1 4 3 6 5 OVEN AND CABINET PARTS 7-8 A A 7-8 7-6 2-3 B B 4-7 7-6 6-7 7-5 1-9 C C 1-5 4-6 7-3 1-13 1-8 D 4-8 7-6 D 1-6 7-7 4-2 7-4 E 4-9 1-10 6-6 E 1-3 7-2 6-3 1-4 7-2 6-5 7-4 1-11 F 1-12 7-5 F 1-6 2-1 6-4 4-5 7-1 1-7 4-3 4-10 1-7 7-1 4-4 4-1 1-1 1-2 G G 7-4 7-4 2-2 2-2 7-4 2-2 4-11 2-2 H H 1 2 4 3 36 5 6
R-410FK R-410FW 2 1 4 3 6 5 CONTROL PANEL PARTS 3-1 3-4 3-2 A 3-5 A 3-6 3-3 3-2-1 B B 3-2-3 3-2-2 C C DOOR PARTS 5-4 D D 5-2 5-3 E E 5-1-1 F F 5-1-2 5-5 5-1 6-1 G G 6-2 H 6-9 1 2 4 3 37 H Actual wire harness may be different from illustration.
R- 410FK R-410FW PACKING AND ACCESSORIES TOP PAD ASSEMBLY DOOR PROTECTION SHEET 6-5 TURNTABLE TRAY PLASTIC BAG ON TOP OF THE OVEN TRAY HOLDER 6-8 OPERATION MANUAL I O NT TH 6-4 TURNTABLE SUPPORT PACKING CASE Non-replaceable items 38 EO N VE Y VIT CA BOTTOM PAD ASSEMBLY
R-410FK R-410FW NOTES 39
R- 410FK R-410FW NOTES 40
R-410FK R-410FW NOTES 41
R- 410FK R-410FW 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. 2002 SHARP CORP. (2M2.20E) Printed in U.S.
