Table of Contents
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TopPage
CHAPTER 1. BEFORE SERVICING
CHAPTER 2. WARNING TO SERVICE PERSONNEL
CHAPTER 3. PRODUCT SPECIFICATIONS
CHAPTER 4. APPEARANCE VIEW
CHAPTER 5. OPERATION SEQUENCE
CHAPTER 6. FUNCTION OF IMPORTANT COMPO-
NENTS
CHAPTER 7. TROUBLESHOOTING GUIDE
CHAPTER 8. TEST PROCEDURES
SERVICE MANUAL
MODELS
HEALTHY MENUS
LOW FAT
VEGETARIAN
MEAL
MEAL
EXPRESS MENUS
EXPRESS
EXPRESS
EXPRESS
DEFROST
COOK
MEAL
SENSOR COOK
RICE/
VEGETABLES
DESSERTS
PASTA
EASY
QUICK&
SENSOR
DEFROST
EASY
REHEAT
LESS
HELP
MORE
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.
CONTENTS
CHAPTER 9. TOUCH CONTROL PANEL ASSEMBLY
CHAPTER 10. PRECAUTIONS FOR USING LEAD-
FREE SOLDER
CHAPTER 11. COMPONENT REPLACEMENT AND
ADJUSTMENT PROCEDURE
CHAPTER 12. MICROWAVE MEASUREMENT
CHAPTER 13. CIRCUIT DIAGRAMS
Parts List
S1701R380LPJW
MICROWAVE OVEN
R-380L(S)
R-380L(W)
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
R380L(W)
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Related Manuals for Sharp R-380LS
Summary of Contents for Sharp R-380LS
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Page 1: Microwave Oven
TopPage R380L(W) SERVICE MANUAL S1701R380LPJW MICROWAVE OVEN R-380L(S) MODELS HEALTHY MENUS LOW FAT VEGETARIAN MEAL MEAL R-380L(W) EXPRESS MENUS EXPRESS EXPRESS EXPRESS DEFROST COOK MEAL SENSOR COOK RICE/ VEGETABLES DESSERTS PASTA EASY QUICK& SENSOR DEFROST EASY REHEAT LESS HELP MORE 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. -
Page 2: Table Of Contents
CONTENTS CHAPTER 1. BEFORE SERVICING SERVICING FOR TOUCH CONTROL PANEL ............9-2 CHAPTER 2. WARNING TO SERVICE PERSON- CHAPTER 10. PRECAUTIONS FOR USING LEAD- FREE SOLDER CHAPTER 3. PRODUCT SPECIFICATIONS CHAPTER 11. COMPONENT REPLACEMENT CHAPTER 4. APPEARANCE VIEW AND ADJUSTMENT PROCEDURE BEFORE OPERATING ...... -
Page 3: Chapter 1. Before Servicing
GENERAL IMPORTANT INFORMATION This Manual has been prepared to provide Sharp Corp. Service engineers with Operation and Service Information. It is recommended that service engineers carefully study the entire text of this manual, so they will be qualified to render satisfactory customer ser- vice. -
Page 4: Chapter 2. Warning To Service Personnel
If the water remains cold carry out 3D checks and Sharp recommend that wherever possible fault-finding is carried out reexamine the connections to the component being tested. with the supply disconnected. It may, in some cases, be necessary to... -
Page 5: Chapter 3. Product Specifications
R380L(W) CHAPTER 3. R380L(W) PRODUCT SPECIFICATIONS Service Manual ITEM DESCRIPTION 230 - 240 Volts Power Requirements 50 Hertz Single phase, 3 wire earthed Power Consumption 1.67 k W 1200 watts nominal of RF microwave energy (IEC Test Procedure) Power Output Operating frequency 2450 MHz Width 520 mm Case Dimensions... -
Page 6: Chapter 4. Appearance View
R380L(W) CHAPTER 4. R380L(W) APPEARANCE VIEW Service Manual OVEN 1. Door open button 2. Door safety latches 3. Removable turntable support 4. Removable turntable tray 5. Oven lamp 6. See through door 7. Ventilation openings 8. Touch control panel 9. Liquid crystal display 10. -
Page 7: Chapter 5. Operation Sequence Off Condition
R380L(W) CHAPTER 5. R380L(W) OPERATION SEQUENCE Service Manual [1] OFF CONDITION 1) When the oven door is opened during or after the cycle of a cooking program, the 1st. latch switch and 2nd. interlock relay Closing the door activates all door interlock switches (1st. latch switch control switch must open their contacts first. - Page 8 R380L(W) 2. Heat potatoes. Moisture and humidity is emitted rapidly. You can smell the aroma as it cooks.; AH S E NS OR 3. Sensor detects moisture and humidity and calculates cooking time and variable power. 1. Cooking Sequence. 1. 1.Operate the oven in sensor cooking mode by referring to the operation manual.
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Page 9: Chapter 6. Function Of Important Com
R380L(W) CHAPTER 6. R380L(W) FUNCTION OF IMPORTANT COMPONENTS Service Manual [1] DOOR OPEN MECHANISM [6] OVEN TEMPERATURE FUSE The door is opened by pushing the open button on the control panel, The temperature fuse, located on the top of the oven cavity, is refer to the Figure D-1.When the open button is pushed, the open but- designed to prevent damage to the oven by fire.If the food load is over- ton pushes up the switch lever, and then the switch lever pushes up... -
Page 10: Chapter 7. Troubleshooting Guide
R380L(W) CHAPTER 7. R380L(W) TROUBLESHOOTING GUIDE Service Manual When troubleshooting the microwave oven, it is helpful to follow the IMPORTANT: Sequence of Operation in performing the checks. Many of the possible If the oven becomes inoperative because of a blown fuse F10A in the causes of trouble will require that a specific test be performed. -
Page 11: Chapter 8. Test Procedures 1] A: Magnetron (Mg) Test
R380L(W) CHAPTER 8. R380L(W) TEST PROCEDURES Service Manual [1] A: MAGNETRON (MG) 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. To test for an open circuit filament use an ohmmeter to make a continuity test between the magnetron filament terminals, the meter should show a reading of less than 1 ohm. -
Page 12: B: Power Transformer Test
R380L(W) 1000g 1000g 1000g T1 C T2 C Heat up for 38 sec. [2] B: POWER TRANSFORMER TEST WARNING: High voltages and large currents are present at the secondary winding and filament winding of the power transformer. It is very dangerous to work near this part when the oven is on. NEVER make any voltage measurements of the high-voltage cir- cuits, including the magnetron filament. -
Page 13: E: Switch Test
R380L(W) [5] E: SWITCH TEST CARRY OUT 3D CHECKS. Isolate the switch to be tested and using an ohmmeter check between the terminals as described in the following table. Table: Terminal Connection of Switch Plunger Operation Common terminal to Normally open terminal Common terminal to Normally close terminal Released Open circuit... -
Page 14: J: High Voltage Fuse Test
R380L(W) [10] J: HIGH VOLTAGE FUSE TEST CARRY OUT 3D CHECKS. If the high voltage fuse is blown, there could be a short in the high voltage rectifier or the magnetron. Check them and replace the defective parts and the high voltage fuse. CARRY OUT 4R CHECKS. -
Page 15: M: Relay Test
R380L(W) [13] M: RELAY TEST CARRY OUT 3D CHECKS. Remove the outer case and check voltage between the cabinet side terminal of the relay RY1 and the lower side terminal of the relay RY2 on the power unit with an A.C. voltmeter. The meter should indicate 230 - 240 volts, if not check oven circuit. RY1 and RY2 Relay Test These relays are operated by D.C. - Page 16 R380L(W) 2) Place the container on the center of tray in the oven cavity. 3) Close the door. 4) Touch the TIMER/CLOCK pad once, the POWER LEVEL pad twice and the START pad once. And touch the number pads 1 once and the number pad 4 once.
- Page 17 R380L(W) 15)Reconnect all leads removed from components during testing and repairing. 16)Re-install the outer case (cabinet). 17)Reconnect the power supply cord after the outer case is installed. Run the oven and check all functions. 18)Carry out “Water load cooking test” again and ensure that the oven works properly. Plunger To connector (F) on Control Unit.
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Page 18: Chapter 9. Touch Control Panel Assem
R380L(W) CHAPTER 9. R380L(W) TOUCH CONTROL PANEL ASSEMBLY Service Manual [1] 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 them are explained below. -
Page 19: Servicing For Touch Control Panel
R380L(W) Abs olute humidity vs , output voltage characteris tic Operational amplifier Output voltage S : T hermis tor open ves s el C : T hermis tor clos ed ves s el Abs olute humidity (g/m ) 3. Detector Circuit of Absolute Humidity Sensor Circuit This detector circuit is used to detect the output voltage of the absolute humidity circuit to allow the LSI to control sensor cooking of the unit. - Page 20 R380L(W) CAUTION: THE HIGH VOLTAGE TRANSFORMER OF THE MICROWAVE OVEN IS STILL LIVE DURING SERVICING AND PRESENTS A HAZ- ARD. Therefore, before checking the performance of the touch control panel, 1) Disconnect the power supply cord, and then remove outer case. 2) Open the door and block it open.
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Page 21: Chapter 10. Precautions For Using Lead- Free Solder
R380L(W) CHAPTER 10. R380L(W) PRECAUTIONS FOR USING LEAD-FREE SOLDER Service Manual 1. Employing lead-free 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. -
Page 22: And Adjustment Procedure 1] Before Operating
Please refer to ”OVEN PARTS, CABINET PARTS, DOOR PARTS”, when carrying out any of the following removal procedures: WARNING FOR WIRING To prevent an electric shock, take the following precautions. 3) Sharp edge: 1. Before wiring, Bottom plate, Oven cavity, Weveguide flange, Chassis support and other metallic plate. -
Page 23: Power Transformer Removal
R380L(W) [3] POWER TRANSFORMER REMOVAL 1. REMOVAL 2. RE-INSTALL 1. CARRY OUT 3D CHECKS. 1. Rest transformer on the bottom plate with its primary terminals toward the oven face plate. 2. Disconnect wire leads (primary) from the power transformer. 2. Secure transformer with four (4) screws (two (2) screws from the 3. -
Page 24: Control Panel Assembly Removal
4. Where the corners have been snipped off bend corner areas flat. 8. After replacement use the one (1) screw (XHPS740P08K00) to fit No sharp edges must be evident after removal of the turntable the turntable motor cover. motor cover. -
Page 25: Power Supply Cord Replacement
R380L(W) 2. Hold the center of the bracket which supports the shaft of the fan CAUTION: • Do not hit the fan blade strongly when installed because motor on the flat table. the bracket may be disfigured. 3. Apply the screw lock tight into the hole (for shaft) of the fan blade. •... -
Page 26: 1St. Latch Switch, 2Nd. Interlock Relay Control Switch And Monitor Switch Adjustment
R380L(W) [13] 1ST. LATCH SWITCH, 2ND. INTERLOCK RELAY CONTROL SWITCH AND MONITOR SWITCH ADJUSTMENT 1. Adjustment 2. The 1st. latch switch and 2nd. interlock relay controls witch inter- rupt the circuit before the door can be opened. If the 1st. latch switch, 2nd. interlock relay control switch and monitor 3. - Page 27 R380L(W) 3. After any service, make sure of the following: 4. SEALER FILM 1. Door latch heads smoothly catch latch hook through latch holes 1. Put the adhesive tape on the backing film of the sealer film as and that latch head goes through center of latch hole. shown in Fig.
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Page 28: Chapter 12. Microwave Measurement
R380L(W) CHAPTER 12. R380L(W) MICROWAVE MEASUREMENT Service Manual After adjustment of door latch switches, monitor switch and door are completed individually or collectively, the following leakage test must be per- formed with a survey instrument and it must be confirmed that the result meets the requirements of the performance standard for microwave oven. REQUIREMENT The safety switch must prevent microwave radiation emission in excess of 5mW/cm at any point 5cm or more from external surface of the oven. -
Page 29: Chapter 13. Circuit Diagrams
R380L(W) CHAPTER 13. R380L(W) CIRCUIT DIAGRAMS Service Manual [1] Oven Schematic SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED. 2. CLOCK APPEARS ON DISPLAY. TEMPERATURE NOISE FILTER FUSE 150ºC (OVEN) FUSE F10A RY-2 2ND. INTERLOCK RELAY CONTROL UNIT CAPACITOR 1.13μ AC2300V 2ND. -
Page 30: Pictorial Diagram
R380L(W) [2] Pictorial Diagram LIVE COM. Figure S-1. Pictorial Diagram 13 – 2... -
Page 31: Power Unit Circuit
R380L(W) [3] Power Unit Circuit CN-C 2SB1238 VRS1 CN-A PA112DR 10G471K B02B-XASK-1 4.7K D1 - D4 1N4002 x 4 510 1/2W 2SB1238 680 1/2W C9 VR OMIF-S-124LM BUZZER DTD143ES R6 3.3K OL,FM, DU24D1-1P(M)-R MICRO MICRO Hz Free 2ND. INTERLOCK RELAY CONTROL SWITCH 2ND. -
Page 32: Cpu Unit Circuit
R380L(W) [4] CPU Unit Circuit Figure S-2(b). CPU Unit Circuit 13 – 4... -
Page 33: Lcd Circuit
R380L(W) [5] LCD Circuit SEG9 SEG36 SEG8 SEG15 SEG37 SEG7 SEG16 SEG38 SEG6 SEG17 SEG5 SEG39 SEG18 SEG4 COM16 SEG19 SEG3 COM15 SEG20 SEG2 COM14 SEG21 SEG1 COM13 SEG22 SEG0 COM12 COM7 COM11 COM6 COM10 COM5 COM9 COM4 COM8 COM3 COM2 COM1 COM0... -
Page 34: Printed Wiring Board (Figure S-3)
R380L(W) [6] Printed Wiring Board (Figure S-3) (RED) (GREEN) CN - C SH - B SH - A B R1 (CN - B) (J2) (R9) (D10) (CN - D) (J1) CN - A Figure S-3. Printed Wiring Board of Power Unit 13 –... -
Page 35: Parts List
R380L(W) PARTS LIST MICROWAVE OVEN HOW TO ORDER REPLACEMENT PARTS R-380L(S) To have your order filled promptly and correctly, please MODELS furnish the following information. 1. MODEL NUMBER 2. REF. NO. R-380L(W) 3. PART NO. 4. DESCRIPTION Parts marked "*" may cause undue microwave exposure. Parts marked "... - Page 36 R380L(W) [1] OVEN PARTS 7-10 7-10 7-10 1-13 1-12 4-15 4-12 7-10 4-20 4-16 1-15 4-13 7-10 4-17 7-10 7-11 4-19 1-11 4-14 4-21 4-10 4-18 4-11 1-10 4-12 1-14 4-12 4-12...
- Page 37 R380L(W) PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [1] OVEN PARTS ELECTRIC PARTS 1st. latch / 2nd. interlock relay control switch QSW-MA085WRE0 1st. latch / 2nd. interlock relay control switch (Interchangeable) QSW-MA147WRZZ 1st. latch / 2nd. interlock relay control switch (Interchangeable) QSW-MA137WRE0 Monitor switch QSW-MA086WRE0...
- Page 38 R380L(W) [2] DOOR AND CONTROL PANEL PARTS 3-2-1 3-2-2...
- Page 39 R380L(W) PRICE PART PARTS CODE DESCRIPTION RANK MARK RANK [2] DOOR AND CONTROL PANEL PARTS CONTROL PANEL PARTS Control unit DPWB-A462DRKZ Panel sub assembly [R-380L(W)] FPNLCB933WRKZ Panel sub assembly [R-380L(S)] FPNLCB936WRKZ 3-2-1 Graphic sheet [R-380L(W)] PSHEPB233WREZ 3-2-1 Graphic sheet [R-380L(S)] PSHEPB236WREZ 3-2-2 Membrane switch...
- Page 40 1-4-12 XOTS740P12RV0 1-7-2 PDUC-A833WRPZ 1-4-8 COPYRIGHT © 2007 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in retrieval systems, or transmitted in anyform or by any means, electronic, mechanical, photocopying, re- cording, or other wise, without prior written permission...