Sharp R-410FW Service Manual

Sharp R-410FW Manual

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  • Sharp R-410FW | Service Manual - Page 1
    ENERGY INSIDE FRONT COVER BEFORE SERVICING ...INSIDE FRONT COVER WARNING TO SERVICE PERSONNEL ...1 MICROWAVE MEASUREMENT PROCEDURE 2 FOREWORD AND WARNING ...3 PRODUCT SPECIFICATIONS ...4 GENERAL INFORMATION ...4 OPERATION ...6 TROUBLESHOOTING GUIDE ...9 TEST PROCEDURE ...10 TOUCH CONTROL PANEL
  • Sharp R-410FW | Service Manual - Page 2
    to the owner. BEFORE SERVICING 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
  • Sharp R-410FW | Service Manual - Page 3
    Service Manual carefully and follow all instructions. Don't Touch ! Danger High Voltage Before Servicing use of an insulated screwdriver. Whenever troubleshooting is performed the power supply must door and set the power to HIGH and set the microwave timer for two (2) minutes. When the two minutes
  • Sharp R-410FW | Service Manual - Page 4
    specified in its instruction booklet. Important: Survey instruments that comply with the requirement for instrumentation as prescribed by the performance standard for microwave ovens, 21 before any door movement. NOTE: After servicing, record data on service invoice and microwave leakage report. 2
  • Sharp R-410FW | Service Manual - Page 5
    SERVICE MANUAL R-410FK R-410FW MICROWAVE OVEN R-410FK/R-410FW 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
  • Sharp R-410FW | Service Manual - Page 6
    System Clock ( 1:00 - 12:59 ) Timer (0 - 99 min. 99 seconds) Microwave Power for Variable Cooking Repetition Rate; P-HI Full power throughout the cooking time P-90 approx 21, Chapter 1, Subchapter J GENERAL INFORMATION GROUNDING INSTRUCTIONS This oven is equipped with a three prong grounding
  • Sharp R-410FW | Service Manual - Page 7
    not operate unless the door is securely closed. 3. Removable turntable support. 4. Removable turntable. The turntable will rotate clockwise or counterclockwise. seconds. 6 2 5 10 4 3 7 9 11 8 1 10. Wave guide cover. 11. Power supply cord TOUCH CONTROL PANEL R-410FK R-410FW NOTE: The
  • Sharp R-410FW | Service Manual - Page 8
    food is placed to be cooked. 5. Upon completion of the cooking time, the power transformer, oven lamp, etc. are turned off, and the generation of microwave energy is stopped. The oven will revert to the OFF condition. 6. When the door is opened during a cook cycle, the monitor switch, door sensing
  • Sharp R-410FW | Service Manual - Page 9
    SCHEMATIC NOTE: CONDITION OF OVEN 1. Door Closed 2. CLOCK APPEARS ON DISPLAY Note:* Indicates component BRN ORG RED RED WHT CAVITY TEMPERATURE FUSE RED C/T FUSE RED GRN 120VAC GND 60Hz N.O. (RY1) OVEN LAMP RELAY GRY ORG ORG N.O. RED COM. B2 DOOR SENSING SWITCH COM. (RY2) SECONDARY
  • Sharp R-410FW | Service Manual - Page 10
    is designed to prevent damage to the magnetron if an over heated condition develops in the tube due to cooling fan failure, obstructed air guide, dirty or blocked air intake, etc. Under normal operation, the C/T fuse remains closed. However, when abnormally high temperatures are reached within the
  • Sharp R-410FW | Service Manual - Page 11
    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
  • Sharp R-410FW | Service Manual - Page 12
    TURNTABLE MOTOR TOUCH CONTROL PANEL WRONG OPERATION LOW VOLTAGE DIRTY OVEN CAVITY KEY UNIT RELAY (RY1) COMPU DEFROST FOIL PATTERN ON PWB. CONDITION PROBLEM Home fuse or circuit breaker blows when power cord is plugged into wall receptacle OFF CONDITION C/T fuse blows when power cord is plugged
  • Sharp R-410FW | Service Manual - Page 13
    the power supply cord after the outer case is installed. 9. Run the oven and check all functions. MICROWAVE OUTPUT POWER The following test procedure should be carried out with the microwave oven in a fully assembled condition (outer case fitted). HIGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO
  • Sharp R-410FW | Service Manual - Page 14
    operation of control unit. Check for restricted air flow through the vent holes of the oven cavity, especially the cooling fan and air guide. 5. Reconnect all leads removed from components during testing. 6. Reinstall the outer case (cabinet). 7. Reconnect the power supply cord after the outer case
  • Sharp R-410FW | Service Manual - Page 15
    R-410FK R-410FW PROCEDURE LETTER TEST PROCEDURES 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.
  • Sharp R-410FW | Service Manual - Page 16
    microwave ovens, proper maintenance cannot be performed with only a voltmeter and ohmmeter. In this service manual, the touch control panel assembly is divided into two units, Control Unit and Key Unit, and also the Control Unit is divided into two units, LSI Unit and Power Unit, and troubleshooting
  • Sharp R-410FW | Service Manual - Page 17
    to light up. e) Wrong figure appears. f) A certain group of indicators do not light up. g) The figure of all digits flicker. 2-3 Other possible problems caused by defective control unit. a) Buzzer does not sound or continues to sound. b) Clock does not operate properly. c) Cooking is not possible
  • Sharp R-410FW | Service Manual - Page 18
    circuit. RY1 and RY2 Relay Test These relays are operated by D.C. voltage Check voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation. DC. voltage indicated Defective relay. DC. voltage not indicated ........ Check diode which is connected to the relay coil. If
  • Sharp R-410FW | Service Manual - Page 19
    case (cabinet). 8) Reconnect the power supply cord after the outer case is installed. 9) Run the oven and check all functions. 2. Follow the troubleshooting guide given below, if indicator does not light up after above check and repairs are finished. 1) Disconnect the power supply cord, and then
  • Sharp R-410FW | Service Manual - Page 20
    R-410FK R-410FW TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 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). The principal functions of these units and the signals communicated among
  • Sharp R-410FW | Service Manual - Page 21
    Magnetron high-voltage circuit driving signal. To turn on and off the cook relay (RY2). The signals holds "L" level during OFF H : GND microwave cooking and "H" level while not cooking. In other cooking modes (variable cooking) the signal turns to "H" level and "L" level in repetition according
  • Sharp R-410FW | Service Manual - Page 22
    R-410FK R-410FW Pin No. Signal I/O 27 RESET IN 28 P71 OUT 29 P70 IN 30 XIN IN 31 XOUT OUT 32 VSS IN 33 P27 OUT 34 P26 OUT 35 P25 OUT 36 P24 OUT 37 P23 OUT 38 P22 OUT 39 P21 OUT 40 P20 OUT 41-48 49-50 51-72 P17-P10 P07-P06 SEG21-SEG0 OUT OUT OUT
  • Sharp R-410FW | Service Manual - Page 23
    Pin No. 73/74 75 76 77 Signal VCC/VREF AVSS COM3 COM2 I/O IN IN OUT OUT 78 COM1 OUT 79 COM0 OUT 80 VL3 IN Connected to GND. Description Connected to VC. Terminal not used. Common data signal. Connected to LCD signal COM3. Common data signal. Connected to LCD signal COM2. Common data
  • Sharp R-410FW | Service Manual - Page 24
    the touch control panel with power supply of the oven: CAUTION: THE HIGH VOLTAGE TRANSFORMER OF THE MICROWAVE OVEN IS STILL LIVE DURING SERVICING AND PRESENTS A HAZARD. Therefore, before checking the performance of the touch control panel, 1) Disconnect the power supply cord, and then remove
  • Sharp R-410FW | Service Manual - Page 25
    possible exposure to microwave energy, please follow the instructions below before operating 1. Without the RF gasket (Magnetron). 2. If the wave guide or oven cavity are not intact. 3. If the door cavity. 3) Sharp edge: Bottom plate, Oven cavity, Waveguide flange, Chassis support and other metallic
  • Sharp R-410FW | Service Manual - Page 26
    Open the door and block it open. 3. Discharge high voltage capacitor. 4. Disconnect wire leads from magnetron. 5. Remove the two (2) screws holding the chassis support to the magnetron and the oven cavity front flange. 6. Slide the magnetron duct slightly so that the two (2) screws at left hand side
  • Sharp R-410FW | Service Manual - Page 27
    OVEN LAMP AND LAMP SOCKET REMOVAL 1. Disconnect the power supply cord and remove outer case. 2. Open the door and block it open. 3. Discharge high voltage capacitor. 4. Remove the oven lamp from the oven lamp socket. 5. Pull the wire leads from the oven lamp socket by pushing the terminal hole of
  • Sharp R-410FW | Service Manual - Page 28
    1. Disconnect the power supply cord. 2. Remove turntable and turntable support from oven cavity. 3. Lay the oven on it's backside. Remove 4. Where the corners have been snipped off bend corner areas flat. No sharp edges must be evident after removal of the turntable motor cover. 5. Disconnect
  • Sharp R-410FW | Service Manual - Page 29
    larger than normal. INSTALLATION 1. Install the fan blade to the fan motor shaft according to the following procedure. 2. Hold the center of the bracket which supports the shaft of the fan motor on the flat table. 3. Apply the screw lock tight into the hole (for shaft) of the fan blade. 4. Install
  • Sharp R-410FW | Service Manual - Page 30
    3. Monitor switch contacts close when door is opened. 4. Re-install outer case and check for microwave leakage around door with an approved microwave survey meter. (Refer to Microwave Measurement Procedure.) Latch Heads Door Switch Lever Door Sensing Switch Monitor Switch Primary Interlock Switch
  • Sharp R-410FW | Service Manual - Page 31
    switch are operating properly. (Refer to chapter "Test Procedures".). (B) An approved microwave survey meter should be used to assure compliance with proper microwave radiation emission limitation standards. After any service, make sure of the following : 1. Door latch heads smoothly catch latch
  • Sharp R-410FW | Service Manual - Page 32
    R-410FK R-410FW A B C D E F G H 1 1 2 2 12 3 3 to Oven cavity DOOR SENSING SWITCH COM. N.O. PNK GRN GRN GRN CN-B (POWER UNIT) WHT COM. RY1 N.O. GRY COM. RY2 N.O. T1 SECONDARY INTERLOCK RELAY 2 GRN 1 PNK CN-B BRN RED RED RED N.C. WHT WHT COM. MONITOR SWITCH C/T FUSE
  • Sharp R-410FW | Service Manual - Page 33
    31 H 6 5 4 3 2 Figure S-2. Power Unit Circuit H 1 G G NOTE : IF NOT SPECIFIED, 1/4W ± 5% T1 24 D1-D4 1N4002 D3 D1 LD1 LD2 LD3 LD4 WH-1 WH-1 WH-1 WH-1 10G471K VRS1 (J10) (J12) (J14) (J16) d1 3 D4 D2 a b + + - - C1 0.1µ/50v C2 1000µ/25v (J11) (J13) (J15) (J17) (J1) c R1
  • Sharp R-410FW | Service Manual - Page 34
    32 6 5 4 3 2 1 H H PRESET 41 LED 45 GND 40 R2 82 R3 4.7k C4 0.1µ/50v VC 42 R4 4.7k Q1 2SA1037AK C10 0.1µ/50v INT 44 AN7 46 AN6 47 AN5 48 AN4 49 Q10 DTA143EKA R30 3.3k R40 4.7k C40 0.01µ /25v BUZZER 50 VR 43 OVEN LAMP FAN MOTOR TURNTABLE 51 MOTOR MICRO 52
  • Sharp R-410FW | Service Manual - Page 35
    1 A B C D E F G 2 3 4 5 C21 12 WH-1 LD4 LD3 LD2 12 WH-1 LOT NO. BFB QKITPB037MRE0 D40 JP1 1 2 D20 JP2 CN-B SP1 R1 (J17) (J15) (J13) (J11) ZD1 LD1 DIP C1 B Q21 D21 D4 D3 D1 C3 (J16) (J14) (J12) (J10) JP4 JP5 JP3 E D22 RY1 C2 3 D2 2 VRS1 4 S P 1 T1 FB 037 MR
  • Sharp R-410FW | Service Manual - Page 36
    R-410FK R-410FW 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 M OVEN PARTS H.V. Capacitor band Chassis support Latch hook Switch lever Magnetron duct Fan blade
  • Sharp R-410FW | Service Manual - Page 37
    support NTNT-A095WRE0 M Turntable tray TCAUAB045MRR0 M Monitor caution label TCAUAB038MRR0 M DHHS/Screw caution label TINSEB300MRK0 M Operation manual NO. 3. PART NO. 4. DESCRIPTION Order Parts from the authorized SHARP parts Distributor for your area. Defective parts requiring return should be returned
  • Sharp R-410FW | Service Manual - Page 38
    R-410FK R-410FW 1 2 3 OVEN AND CABINET PARTS A 4 5 6 7-8 A 7-8 7-6 B C D 4-8 2-3 4-7 B 7-6 7-5 6-7 1-9 C 1-5 4-6 7-3 1-13 1-8 7-6 1-6 D 7-7 4-2 7-4 E 4-9 1-10 E 6-6 1-3 6-3 6-5 4-10 7-2 7-2 7-4 4-3 7-1 1-7 1-4 4-5 1-11 F 1-12 7-5 1-6 F 2-1 6-4 1-7 7-1 4-4
  • Sharp R-410FW | Service Manual - Page 39
    1 2 3 CONTROL PANEL PARTS A 3 - 2 3 - 3 3 - 5 3-2-1 3 - 4 4 3 - 1 5 3 - 6 R-410FK R-410FW 6 A B B 3-2-3 3-2-2 C C DOOR PARTS 5-4 D D 5-2 E 5-3 E F 5-5 G H 1 2 5-1-1 5-1-2 F 5-1 6-1 G 6-2 6-9 H Actual wire harness may be different from illustration. 3 4 5 6
  • Sharp R-410FW | Service Manual - Page 40
    R-410FK R-410FW PACKING AND ACCESSORIES DOOR PROTECTION SHEET 6-5 TURNTABLE TRAY ON TOP OF THE OVEN TRAY HOLDER TOP PAD ASSEMBLY PLASTIC BAG 6-8 OPERATION MANUAL INTO THE OVEN CAVITY BOTTOM PAD ASSEMBLY 6-4 TURNTABLE SUPPORT PACKING CASE Non-replaceable items 38
  • Sharp R-410FW | Service Manual - Page 41
    NOTES R-410FK R-410FW 39
  • Sharp R-410FW | Service Manual - Page 42
    R-410FK R-410FW NOTES 40
  • Sharp R-410FW | Service Manual - Page 43
    NOTES R-410FK R-410FW 41
  • Sharp R-410FW | Service Manual - Page 44
    R-410FK R-410FW COPYRIGHT © 2002 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in , electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. 2002 SHARP CORP. (2M2.20E) Printed in U.S.A 42
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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 con-
tain 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 Recti-
fier Assembly,
High Voltage Harness etc..)
TABLE OF CONTENTS
Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO
AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
..................
INSIDE FRONT COVER
BEFORE SERVICING
.....................................................................................................
INSIDE FRONT COVER
WARNING TO SERVICE PERSONNEL
..............................................................................................................
1
MICROWAVE MEASUREMENT PROCEDURE
..................................................................................................
2
FOREWORD AND WARNING
.............................................................................................................................
3
PRODUCT SPECIFICATIONS
.............................................................................................................................
4
GENERAL
INFORMATION
.................................................................................................................................
4
OPERATION
........................................................................................................................................................
6
TROUBLESHOOTING GUIDE
.............................................................................................................................
9
TEST PROCEDURE
...........................................................................................................................................
10
TOUCH CONTROL PANEL
................................................................................................................................
18
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
..................................................................
24
PICTORIAL DIAGRAM
........................................................................................................................................
30
POWER UNIT CIRCUIT
.......................................................................................................................................
31
CPU UNIT CIRCUIT
.............................................................................................................................................
32
PRINTED WIRING BOARD
.................................................................................................................................
33
PARTS LIST
........................................................................................................................................................
34
PACKING AND ACCESSORIES
.........................................................................................................................
38
S12M179R410FE
R-410FK
R-410FW
MICROWAVE OVEN
MODELS
SERVICE MANUAL
SHARP ELECTRONCS CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
Service Headquarters: Sharp Plaza, Mahwah, New Jersey, 07430-2135
R-410FK