Sharp R-351NW Service Manual

Sharp R-351NW Manual

Get Sharp R-351NW PDF manuals and user guides View all Sharp R-351NW manuals
Add to My Manuals
Save this manual to your list of manuals

Sharp R-351NW manual content summary:

  • Sharp R-351NW | Service Manual - Page 1
    R-351NW SERVICE MANUAL Palomitas de Maiz Minuto Extra Nivel de Potencia Cronometro Reloj Detencion Cancelacion BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY BEFORE SERVICING CHAPTER 7. TROUBLESHOOTING GUIDE CHAPTER 8. TEST PROCEDURES CHAPTER
  • Sharp R-351NW | Service Manual - Page 2
    5. GENERAL INFORMATION [1] GROUNDING INSTRUCTIONS 5-1 [2] OVEN DIAGRAM 5-1 CHAPTER 6. OPERATION [1] DESCRIPTION OF OPERATING SE- QUENCE 6-1 [2] OVEN SCHEMATIC 6-2 [3] DESCRIPTION AND FUNCTION OF COMPONENTS 6-3 CHAPTER 7. TROUBLESHOOTING GUIDE [1] TROUBLESHOOTING CHART 7-1 CHAPTER 8. TEST
  • Sharp R-351NW | Service Manual - Page 3
    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 @1-800-237-4277
  • Sharp R-351NW | Service Manual - Page 4
    Service Manual carefully and follow all instructions. Don't Touch ! Danger High Voltage [1] Before Servicing use of an insulated screwdriver. Whenever troubleshooting is performed the power supply must and set the power to HIGH and set the microwave timer for two (2) minutes. When the two minutes
  • Sharp R-351NW | Service Manual - Page 5
    fied in its instruction booklet. Important: Survey instruments that comply with the requirement for instrumentation as prescribed by the performance standard for microwave ovens, 21 CFR before any door movement. NOTE: After servicing, record data on service invoice and microwave leakage report. 2 - 1
  • Sharp R-351NW | Service Manual - Page 6
    R-351NW CHAPTER 3. FOREWORD AND WARNING [1] FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. Service Personnel with Operation and Service Information for the SHARP MICROWAVE OVENS, R-351NW. It is recommended that service personnel carefully study the entire text of this
  • Sharp R-351NW | Service Manual - Page 7
    , depth and height. Actual capacity for holding food is less. Touch Control System Clock (1:00 - 12:59) Timer (0 - 99 minutes 99 seconds) Microwave Power for Variable Cooking Control Complement Oven Cavity Light Repetition Rate; P-HI Full power throughout the cooking time P-90 approx. 90% of
  • Sharp R-351NW | Service Manual - Page 8
    R-351NW CHAPTER 5. GENERAL INFORMATION [1] GROUNDING INSTRUCTIONS This oven is equipped with a three prong sealing surfaces 6. Turntable motor shaft 3 2 7. Removable turntable support 8 11 10 3 7 Carefully place the turntable support 9 in the center of the oven floor. 8. Removable
  • Sharp R-351NW | Service Manual - Page 9
    2. TOUCH CONTROL PANEL Palomitas de Maiz Minuto Extra R-351NW Nivel de Potencia Cronometro Reloj Detencion Cancelacion Comienzo Function Rapida Derretir Suavizar Calentar 1 Mantequilla 1 Helados 1 Coberturas de 2 Chocolate 2 Queso crema postres COCCION DESCONGELACION RECALENTAR 1
  • Sharp R-351NW | Service Manual - Page 10
    transformer, oven lamp, etc. are turned off, and the generation of microwave energy is stopped. The oven will revert to the OFF condition. 6) NOTE: The ON/OFF time ratio does not correspond with the percentage of microwave power, because approx. 3 seconds are needed for heating of the magnetron fi
  • Sharp R-351NW | Service Manual - Page 11
    [2] OVEN SCHEMATIC 1. Off Condition SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. CLOCK APPEARS ON DISPLAY L FUSE 20A NOISE FILTER 120V AC 60 Hz GRN LINE CROSS CAPACITOR 0.22µF / AC 250V NOISE SUPPRESSION COIL LINE BYPASS CAPACITOR 0.0033µF / AC 125V LINE BYPASS CAPACITOR 0.0033µF /
  • Sharp R-351NW | Service Manual - Page 12
    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 temperature fuse remains closed. However, when abnormally high temperatures are reached within
  • Sharp R-351NW | Service Manual - Page 13
    TROUBLESHOOTING GUIDE R-351NW 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
  • Sharp R-351NW | Service Manual - Page 14
    power supply cord after the outer case is installed. 9. Run the oven and check all functions. 1. 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-351NW | Service Manual - Page 15
    thermal cut-out (Magnetron) indicates overheating of the magnetron. Check for restricted air flow to the magnetron, especially the cooling fan and air guide. An open temperature fuse (Oven) or thermal cut-out (Oven) indicates overheating of the oven, exchange the temperature fuse or thermal cut-out
  • Sharp R-351NW | Service Manual - Page 16
    R-351NW [7] F: PRIMARY INTERLOCK SYSTEM TEST 1. DOOR SENSING SWITCH 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. Isolate the switch and connect the ohmmeter to the common (COM.) and normally open (NO)
  • Sharp R-351NW | Service Manual - Page 17
    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, CPU Unit and Power Unit, and troubleshooting
  • Sharp R-351NW | Service Manual - Page 18
    to light up. e) Wrong figure appears. f) A certain group of indicators do not light up. g) The figure of all digits flicker. 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. 3. If
  • Sharp R-351NW | Service Manual - Page 19
    voltage at the relay coil with a D.C. voltmeter during the microwave cooking operation. DC. voltage indicated Defective relay. DC. voltage block it open. 3) Discharge high voltage capacitor. 4) Follow the troubleshooting guide given below for repair. STEPS OCCURRENCE CAUSE OR CORRECTION 1 Only
  • Sharp R-351NW | Service Manual - Page 20
    (cabinet). 8) Reconnect the power supply cord after the outer case is installed. 9) Run the oven and check all functions. d a b 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-351NW | Service Manual - Page 21
    the LSI if the door is open or closed. 8) Back Light Circuit A circuit to drive the back light (Light emitting diodes LD1- LD3). [2] SERVICING FOR TOUCH CONTROL PANEL 1. Precautions for Handling Electronic Components This unit uses CMOS LSI in the integral part of the circuits. When handling these
  • Sharp R-351NW | Service Manual - Page 22
    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, when checking the performance of the touch control panel, 1) Disconnect the power supply cord and then remove outer
  • Sharp R-351NW | Service Manual - Page 23
    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. Example: Indicates lead-free solder of tin, silver and copper Using lead-free wire solder
  • Sharp R-351NW | Service Manual - Page 24
    to microwave energy. Please follow the instructions below Door does not close firmly. 2. Door hinge, support or latch hook is damaged. 3. The door the RF gasket (Magnetron). 2. If the wave guide or oven cavity are not intact. 3. If the transformer and Oven cavity. 3) Sharp edge: Bottom plate, Oven
  • Sharp R-351NW | Service Manual - Page 25
    open. 3. Discharge high voltage capacitor. 4. Disconnect all wire leads from magnetron. 5. Remove the one (1) screw holding the chassis support to the magnetron. 6. Release the chassis support from the hole of the oven cavity front flange. 7. Remove the two (2) screws holding air duct to magnetron
  • Sharp R-351NW | Service Manual - Page 26
    to the oven cavity top plate and the magnetron with two (2) screws. 3. Insert the end of the chassis support into the hole of the oven cavity front flange. 4. Hold the other end of the chassis support to the magnetron with the one (1) screw. 5. Reconnect the wire leads to the magnetron. Refer to
  • Sharp R-351NW | Service Manual - Page 27
    the corners have been snipped off bend corner areas flat. No sharp edges must be evident after removal of the turntable motor cover. 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
  • Sharp R-351NW | Service Manual - Page 28
    R-351NW Coil Groove joint pliers Shaft Shaft These are the positions Stator Gap Axis that should be pinched Stator with pliers. Table Cen Bracket Rotor Rotor brac Rear View Side View [11] POWER SUPPLY CORD REPLACEMENT 1. REMOVAL 1. Disconnect the power supply cord, and remove outer
  • Sharp R-351NW | Service Manual - Page 29
    bend or warp the slit choke (tabs on the door panel assembly) to prevent microwave leakage. 7. Release two (2) pins of door panel from two (2) holes of Re-install choke cover to door panel by pushing. NOTE: After any service to the door; 1) Make sure that door sensing switch and secondary interlock
  • Sharp R-351NW | Service Manual - Page 30
    R-351NW 3. After any service, make sure of the following: 1. Door latch heads smoothly of gentle warm air movement around oven door is not abnormal and do not of themselves indicate a leakage of microwave energy from oven cavity. Pin 4. SEALER FILM 1. Put the adhesive tape on the backing film of the
  • Sharp R-351NW | Service Manual - Page 31
    12 - 1 Figure S-1 Pictorial Diagram DOOR WHT N.O. SENSING SWITCH GRN COM. GRY CONTROL UNIT CN-B 21 T1 CN-B 2 GRY 1 WHT PRIMARY INTERLOCK RELAY RY2 GRY RY1 GRY RB EL DK RPW EN H DK T GRN GRY WHT BLK N.C. COM. MONITOR SWITCH SECONDARY INTERLOCK NO SWITCH COM. WHT WHT GRY BLK PNK
  • Sharp R-351NW | Service Manual - Page 32
    R-351NW [2] Control Unit Circuit (Figure S-2) Figure S-2 Control Panel Circuit 12 - 2
  • Sharp R-351NW | Service Manual - Page 33
    [3] Printed Wiring Board of Power Unit(Figure S-3) R-351NW Figure S-3. Printed Wiring Board of Power Unit 12 - 3
  • Sharp R-351NW | Service Manual - Page 34
    R-351NW 12 - 4
  • Sharp R-351NW | Service Manual - Page 35
    3. PART NO. 4. DESCRIPTION Parts marked "*" may cause undue microwave exposure. Parts marked "S" are used in voltage more than 250V. 307NK) 6-6 INSTRUCTION BOOK 6-2 TURNTABLE TRAY INTO THE OVEN CAVITY 6-1 TURNRTABLE SUPPORT TRAY PAD sales service only. The contents are subject to change
  • Sharp R-351NW | Service Manual - Page 36
    R-351NW [1] OVEN PARTS 2-1 7-1 1-14 1-13 7-10 7-2 7-10 7-10 7-2 4-13 1-7 4-4 6-2 4-7 4-12 6-1 2-2 7-10 2-3 4-9 4-15 4-12 7-9 4-3 1-12 7-3 1-6 7-6 7-8 4-16 6-4 7-1 1-3 7-3 7-10 7-10 1-8 7-7 7-12 4-8 7-8 4-14 4-6 1-11 7-4 7-5 4-10 4-12 4-17 4-18 7-7 4-1 1-9 1-10 4-5 1-1 7-1
  • Sharp R-351NW | Service Manual - Page 37
    4-14 PCUSGA614WRPZ Cushion 4-15 PCUSGA615WRPZ Cushion 4-16 MROD-A019WREZ Chassis support 4-17 PCUSGA681WRPZ Cushion 4-18 PSPA-A141WRFZ Bottom support MISCELLANEOUS 6-1 FROLPA101WRKZ Turntable support 6-2 NTNT-A117WREZ Turntable 6-4 TCAUAA270WRRZ DHHS caution label SCREWS, NUTS AND
  • Sharp R-351NW | Service Manual - Page 38
    R-351NW [2] DOOR AND CONTROL PANEL PARTS 5-7 5-2 5-1 5-3 5-4 3-2-1 3-2-3 3-2-2 5-8 5-6 5-5 3-9 3-6 3-7 3-4 3-8 3-1 6-6 3-2 6-3 6-7 6-8 3-5 Actual wire harness may be different from illustration. 6-5 3-3 4
  • Sharp R-351NW | Service Manual - Page 39
    LSTPPA230WRFZ Latch head 5-6 MSPRTA187WRE0 Spring * 5-7 GCOVHA472WRFZ Choke cover 5-8 XEPS740P08000 Screw: 4mm x 8mm MISCELLANEOUS 6-3 FW-VZC048WREZ Main wire harness 6-6 TINSEB206WRRZ Instruction book DESCRIPTION R-351NW Q'TY PRICE RANK BH BA BA AQ AT AK AF AB AQ AE AQ AB BC AR AX AS
  • Sharp R-351NW | Service Manual - Page 40
    -AX AK AK BG -BG BK BH BH AF AE AM AB AB AB AB AB AC AG AC AA AA AA COPYRIGHT© 2009 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
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
R-351NW
CONTENTS
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE EXPO-
SURE TO EXCESSIVE MICROWAVE ENERGY
BEFORE SERVICING
CHAPTER 1. WARNING TO SERVICE PERSONNEL
CHAPTER 2. MICROWAVE MEASUREMENT PRO-
CEDURE
CHAPTER 3. FOREWORD AND WARNING
CHAPTER 4. PRODUCT DESCRIPTION
CHAPTER 5. GENERAL INFORMATION
CHAPTER 6. OPERATION
Cronometro
Minuto Extra
1 Mantequilla
2 Chocolate
1 Helados
2 Queso crema
1 Coberturas de
postres
DESCONGELACION
RECALENTAR
COCCION
1 Verdura
Fresca
2 Came Molida
3 Papa Asada
4 Arroz
5 Verdura
6 Entradas
Congelada
Congeladas
1 Came Molida
2 Aves
3 Bistec/
Deshuesadas
Chuletas
4 Aves
1 Caserola
2 Sopa
3 Pizza
4 Bebida
5 Plato Principal
6 Pan Presco
7 Pan Congelada
8 Veroura Bnlatada
Derretir
Suavizar
Calentar
Function Rapida
Reloj
Nivel de
Potencia
Comienzo
Detencion
Cancelacion
Palomitas de Maiz
S3910R351NPAL
MICROWAVE OVEN
R-351NW
In the interest of user-safety the oven should be restored to
its original condition and only parts identical to those speci-
fi
ed 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 se-
vere, possibly fatal, electrical shock. (High Voltage Capaci-
tor,
High Voltage Power Transformer, Magnetron, High
Voltage Rectifier Assembly, High Voltage Harness etc..)
SERVICE MANUAL
This document has been published to be used for after sales service only.
The contents are subject to change without notice.
CHAPTER 7. TROUBLESHOOTING GUIDE
CHAPTER 8. TEST PROCEDURES
CHAPTER 9.
TOUCH CONTROL PANEL ASSEMBLY
CHAPTER 10. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
CHAPTER 11. COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE
CHAPTER 12. CIRCUIT DIAGRAMS
Parts List
MODEL