Sharp R-310FW Service Manual

Sharp R-310FW Manual

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  • Sharp R-310FW | Service Manual - Page 1
    F K R-310FW SERVICE MANUAL S1202R310FPW/ MICROWAVE OVEN MODELS R-310FK R-310FW REHEAT CENTER COMPU DEFROST 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
  • Sharp R-310FW | 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-310FW | Service Manual - Page 3
    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
  • Sharp R-310FW | Service Manual - Page 4
    sure that the actual instrument is operating normally as 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 CFR 1030.10(c)(3)(i), must be used for testing. 2) Place
  • Sharp R-310FW | Service Manual - Page 5
    undue microwave exposure, by themselves, or when they are damaged, loosened or removed. R - 3 10 F K R-310FW PRODUCT DESCRIPTION GENERAL INFORMATION OPERATION TROUBLESHOOTING GUIDE AND TEST PROCEDURE TOUCH CONTROL PANEL COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE WIRING DIAGRAM PARTS LIST SHARP
  • Sharp R-310FW | Service Manual - Page 6
    R-310FW 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 CFR, Title 21, Chapter 1, Subchapter J GENERAL INFORMATION GROUNDING INSTRUCTIONS This oven is equipped with a three prong grounding plug. It
  • Sharp R-310FW | Service Manual - Page 7
    Grounding Pin 3-Pronged Receptacle 7 R - 3 10 F K R-310FW 2 1 5 10 11 9 8 12 4 1. Door open door is securely closed. 3. Removable turntable support. 4. Removable turntable. The turntable will rotate minutes 99 seconds. 10. Coupling. 11. Wave guide cover. 12. Power supply cord TOUCH CONTROL
  • Sharp R-310FW | Service Manual - Page 8
    R-310FK R-310FW OPERATION DESCRIPTION OF OPERATING SEQUENCE The following is a 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
  • Sharp R-310FW | Service Manual - Page 9
    R - 3 10 F K R-310FW SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED 2. CLOCK APPEARS ON DISPLAY NOTE: " " indicates components with potential above 250V. MONITOR FUSE 20A THERMAL CUT-OUT (OVEN)
  • Sharp R-310FW | Service Manual - Page 10
    R-310FK R-310FW DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM The door is opened 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 thermal cut-out remains closed.
  • Sharp R-310FW | Service Manual - Page 11
    F K R-310FW 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
  • Sharp R-310FW | Service Manual - Page 12
    310FK R-310FW TEST PROCEDURE CK = Check / RE = Replace RE RE A B C D E F F G H RE RE CK I CK CK CK J K L M POSSIBLE CAUSE AND DEFECTIVE PARTS SHORT 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
  • Sharp R-310FW | Service Manual - Page 13
    R - 3 10 F K R-310FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 4. To test for an open 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).
  • Sharp R-310FW | Service Manual - Page 14
    R-310FK R-310FW TEST PROCEDURES PROCEDURE LETTER C COMPONENT TEST HIGH VOLTAGE RECTIFIER TEST 1. 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).
  • Sharp R-310FW | Service Manual - Page 15
    R - 3 10 F K R-310FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST CAUTION: IF THE THERMAL CUT-OUT INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE THERMAL CUT-OUT. F SECONDARY INTERLOCK
  • Sharp R-310FW | 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, CPU Unit and Power Unit, and troubleshooting
  • Sharp R-310FW | Service Manual - Page 17
    R - 3 10 F K R-310FW TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST c) When touching the pads, 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
  • Sharp R-310FW | Service Manual - Page 18
    R-310FK R-310FW PROCEDURE LETTER TEST PROCEDURES COMPONENT TEST G 9 G10 G11 G12 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
  • Sharp R-310FW | Service Manual - Page 19
    R-310FW TEST parts. c RY1 ba d XA VRS1 (J1) 6) Reconnect all leads removed from components during testing. 7) Re-install the outer 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
  • Sharp R-310FW | Service Manual - Page 20
    R-310FK R-310FW 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
  • Sharp R-310FW | Service Manual - Page 21
    R - 3 10 F K R-310FW Pin No. 11 12-13 14 15 16 Signal P57 P56-P55 CNTR0 P53 P52 circuit driving signal. To turn on and off the cook relay (RY2). The signals holds "L" level during microwave cooking and "H" level while not cooking. In other cooking modes (variable cooking) the signal turns to "H"
  • Sharp R-310FW | Service Manual - Page 22
    R-310FK R-310FW Pin No. 34 Signal P26 I/O OUT 35 P25 OUT 36 P24 OUT 37 P23 OUT 38 P22 OUT 39 P21 OUT 40 P20 OUT 41-
  • Sharp R-310FW | Service Manual - Page 23
    310FW TOUCH CONTROL PANEL SERVICING 1. Precautions for Handling Electronic Components This unit uses CMOS LSI in the integral part of the circuits. When handling these parts : THE HIGH VOLTAGE TRANSFORMER OF THE MICROWAVE OVEN IS STILL LIVE DURING SERVICING AND PRESENTS A HAZARD. Therefore, before
  • Sharp R-310FW | Service Manual - Page 24
    does not close firmly. 2. Door hinge, support or latch hook is damaged. 3. The door gasket or seal is damaged. 4. The door is bent or warped. 5. There are defective parts in the door interlock system. 6. There are defective parts in the microwave generating and transmission assembly. 7. There is
  • Sharp R-310FW | Service Manual - Page 25
    R - 3 10 F K R-310FW CAUTION: 1. DISCONNECT OVEN FROM POWER SUP PLY BEFORE REMOVING OUTER CASE. 8. Lift up magnetron with care so that magnetron antenna 5. Remove the five (5) screws holding chassis support to is not hit by any metal object around antenna. magnetron, oven cavity back plate, oven
  • Sharp R-310FW | Service Manual - Page 26
    310FW Reinstallation 1. Reinstall the magnetron to waveguide flange with the four (4) screws. 2. Insert the two (2) tabs of the chassis support to the oven cavity front plate and the back plate. 3. Hold the chassis support off bend corner areas flat. No sharp edges must be evident after removal of
  • Sharp R-310FW | Service Manual - Page 27
    the fan motor is free. Coil Groove joint pliers R - 3 10 F K R-310FW INSTALLATION 1. Install the fan motor to the fan duct with the two (2) screws. according to the following procedure. 3. Hold the center of the bracket which supports the shaft of the fan motor on the flat table. 4. Apply the
  • Sharp R-310FW | Service Manual - Page 28
    310FW between the choke cover and door frame as shown in Figure C-4 to free engaging parts. 4. Pry the choke cover by inserting a putty knife as shown Figure C-4. microwave survey meter should be used to assure compliance with proper microwave radiation emission limitation standards. After any service
  • Sharp R-310FW | Service Manual - Page 29
    or sensing 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 R - 3 10 F K R-310FW SEALER FILM Installation 1. Put the adhesive tape on the backing film of the sealer film as shown in Fig. C-6. 2. Tear
  • Sharp R-310FW | Service Manual - Page 30
    connected to the terminal with "N" mark on the power supply cord. HIGH VOLTAGE COMPONENTS GRY GRY RED MAGNETRON HIGH VOLTAGE CAPACITOR POWER TRANSFORMER H.V. RECTIFIER A A 6 5 4 3 2 1 R-310FK R-310FW
  • Sharp R-310FW | Service Manual - Page 31
    R - 3 10 F K R-310FW 1 2 3 4 5 6 A A B CN-A AC A 1 T1 3 4 10G471K VRS1 C A 2 d 1 7 D1 ab S1NB10 GND + - (J1) D c OVEN LAMP RY1 TURNTABLE MOTOR COM FAN MOTOR AC NO E RY2 MICRO NO COM SH-A F
  • Sharp R-310FW | Service Manual - Page 32
    R-310FK R-310FW A B C D E F G H 1 1 2 2 3 3 GND C-3 VR C-5 C1 0.1µ/50v CPU UNIT C2 220µ/10v C3 0.01µ/25v R1 82 R2 4.7k + R12 4.7k - LD1 LD2 LD3 LD4 Q1 2SA1037AK R4
  • Sharp R-310FW | Service Manual - Page 33
    R - 3 10 F K R-310FW 1 2 3 4 5 6 A A 1 1 CN - C 9 SH - B 2 B B CN - B SH - A VH D I P C C SP1 D1 C1 (D2) RY2 (D3) D D OM DU OM DU RY1 E E 7 (J1) 1 S P F G H 1 3 VRS1 XA VH 2 1 CN - A T1 Figure S-4. Printed Wiring
  • Sharp R-310FW | Service Manual - Page 34
    310FK R-310FW PARTS LIST Note: The parts marked "∆" may cause undue microwave exposure. The parts marked "*" are used in voltage more than 250V. REF. NO. 1- 1 1- 1 1- 2 1- 3 1- 3 1- 4 1- 5 1- 5 * 1- 6 * 1- 6 * 1- 7 * 1- 7 ∆* 1- 8 ∆* 1- 8 1- 9 1- 9 * 1-10 1-11 1-12 1-12 1-12 1-12 1-13 1-13 PART NO
  • Sharp R-310FW | Service Manual - Page 35
    Cushion DOOR PARTS Door panel Sealer film Door frame [R-310FK] Door frame [R-310FW] Door screen [R-310FK] Door screen [R-310FW] Latch head Latch spring Screw : 4mm x 8mm Cushion Cushion Cushion Choke cover MISCELLANEOUS Turntable support Turntable tray Main wire harness Instruction book Terminal
  • Sharp R-310FW | Service Manual - Page 36
    R-310FK R-310FW 1 2 3 4 OVEN AND CABINET PARTS 2-1 A 4-22 5 7-6 7-8 6 A 7-6 4-9 B 4-17 7-10 B 7-8 4-20 1-4 6-7 7-6 4-13 1-8 7-7 C 4-11 4-7 6-6 C 7-6 D 4-12 E 4-14 6-2 F 6-1 G 4-2 1-12 7-1 4-1 4-10 7-3 4-21 7-6 1-5 D 7-4 4-15 7-9 7-1 4-21 1-6 1-1 4-19 1-7 4-22
  • Sharp R-310FW | Service Manual - Page 37
    1 2 CONTROL PANEL PARTS A 3-3 3-4 B 3-3-1 C 3 3-2 3-6 3-5 4 5 3-6 3-1 DOOR PARTS 5-11 5-7 R - 3 10 F K R-310FW 6 A B C D E 5-3 F 5-4 5-1 5-10 5-9 5-2 5-7 D 5-7 5-7 E 5-7 5-10 5-9 5-5 F 5-6 G H 1 5-8 6-3 2 MISCELLANEOUS 6-5 Actual wire harness may be different from
  • Sharp R-310FW | Service Manual - Page 38
    R-310FK R-310FW 1 2 3 4 A PACKING AND ACCESSORIES DOOR PROTECTION SHEET SPADPA204WRE0 B FOAM SHEET SPAKHA012WREZ (only for R-310FK) 6- 4 INSTRUCTION BOOK & PRINTING MATTER C 6- 2 TURNTABLE TRAY 6- 1 TURNTABLE SUPPORT INTO THE OVEN CAVITY D TRAY PACK SPADFA451WRE0 Not replaceable items. E
  • Sharp R-310FW | Service Manual - Page 39
    R - 3 10 F K R-310FW 37
  • Sharp R-310FW | Service Manual - Page 40
    R-310FK R-310FW 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,
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R-310FK
R-310FW
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
................................................................
22
PICTORIAL DIAGRAM
........................................................................................................................................
28
POWER UNIT CIRCUIT
......................................................................................................................................
29
CPU UNIT CIRCUIT
............................................................................................................................................
30
PRINTED WIRING BOARD
.................................................................................................................................
31
PARTS LIST
........................................................................................................................................................
32
PACKING AND ACCESSORIES
.........................................................................................................................
36
S1202R310FPW/
R-310FK
R-310FW
MICROWAVE OVEN
MODELS
SERVICE MANUAL
SHARP CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
COMPU DEFROST
REHEAT CENTER