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Summary of Contents for Sharp R-8000E
- Page 1 .q----7- ~-‘ SHARP SERVICE MANUAL f’ SHARP CONVECTION MICROWAVE OVW- R-%OOOE In the interests of user-safety the set should be restored to its original qdition and only parts identical to those specified used. RATION - ’ ’...
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Page 2: Foreword
SERVICE MANUAL SHARP R-8000E FOREWORD This service manual is prepared to provide Sharp service personnel with complete service information on Sharp Convection Microwave Oven. Basic, general information for Sharp Microwave Ovens is given in the GENERAL service manual. Therefore, to permit them to give satisfactory customer... -
Page 3: Table Of Contents
TABLE OF CONTENTS Page FOREWORD ............... CNUTION, MICROWAVE RADIATION ............ THUMB INDEX ..............CHAPTER I PRODUCT ........... DESCROPTION Specifications ..............Features of Control Panel ............CHAPTER11 OPERATION ........................NormalCookingSequence.. Microwave.Cooking ............. Convection Cooking.............. Description of Operating Sequence ............. OffCondition .............. - Page 4 CHAPTER IV COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURES..... Warning...............2 Outer Case Removal.............. OvenLampRemoval............~..2 Power Transformer Removal ............RectifierRemoval..............2 Hight Voltage Capacitor Removal............. Turntable Motor Removal.
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Page 5: Chapter I Product Descroption
CHAPTER PRODUCT DESCRIPTION SPECIFICATIONS 22OV/24OV Power requirements 50Hz Single phase, 3 wire earthed 1.3kW (Microwave), 1.4kW (Convection) Power consumption 650W (2 litre water load) Microwave output power Convection output power 1.3kW nominal of Sheath Heater Case dimensions 552mm Width 395mm including feet Height 500mm BPfi... -
Page 6: Features Of Control Panel
FEATURES OF CONTROL PANEL Indicator Lamp for Convection Cooking (Orange) ------Timer for Convection Cooking Temperature (Heater) Indicator Lamp (Red) Temperature Control for Convection Cooking El 23 Indicator Lamp for Microwave Cooking (Green) Variable Cooking Control : FULL POWER (HIGH) 7&r : ROAST (MEDIUM HIGH) : SIMMER (MEDIUM) A- *.. -
Page 7: Chapter11 Operation
CHAPTER OPERATION NORMAL COOKING SEQUENCE Push the Cooking Start button. Microwave Cooking: The convection lamp will glow to indicate the oven is 1. Place the food to be cooked in the oven and close the in the convection cooking cycle, and-the turntable door firmly. -
Page 8: Idlecondition
IDLE CONDITION 1-9 Upon completion of the selected cooking time, Closing the door activates both door latch switches; upper the timer bell rings once. And the timer contact latch switch and lower latch switch. are deactivated. The oven reverts to the OFF condition. -
Page 9: Preheating Condition
Note: When both microwave and convection timers are PREHEATING CONDITION set, convection cooking takes place first. In this case, the microwave operation will begin Set the preheating temperature by turning the temperature automatically when the convection timer returns to control knob (at 90°C to 25O”C), and preheating time at “0”... -
Page 10: Offcondition
220V 50Hz FUSE 26OV T6.3A LINE LINE RESISTOR BYPASS BYPASS CAPACITOR CAPACITOR FAN MOTOR -01 JT TURNTABLE LOWER 1 IA-.-A- LATCH SWITCH TIMER CONVECTION 1 CONTACTS THERMOSTAT THERM0 SWITCH & ((2) ---1 -___ ------- MICRO L---- ---- ----r-- nnwv2nlAiauc TIMER TllhRCD I.II”b .“..A”... - Page 11 220V 50Hz ---- r---- I@--; FUSE I- ____ -----J 250V T6.3A & RESISTOR LINE LINE Ty-T LINE ACROSS BYPASS RESISTOR BYPASS CAPACITOR CAPACITOR CAPACITOR a J-7 FAN MOTOR MAGNETRON THERM0 CUT. -OUT UPPER OVEN LAMP LATCH TURNTABLE SWITCH LOWER LATCH COOK SWITCH 0’...
- Page 12 220V 50Hz \“‘I ---_ r---- FUSE 25OV T6.3A LINE LINE LINE ACROSS BYPASS BYPASS CAPACITOR CAPACITOR CAPACI TOR , FAN MOTOR MAGNETRON THERM0 CUT-O\ UPPER OVEN LAMP _ COM TURNTABLE LOWER MOTOR LATCH SWITCH CONVECTION , LAMP I--- ________ ____ ---- ----- MICRO...
- Page 13 220V 50Hz FUSE 250V T6.3A RESISTOR LINE LINE LINE ACROSS BYPASS RESISTOR BYPASS CAPACITOR CAPACITOR CAPACITOR FAN MOTOR / MAGNETRON THERM0 CUT-OUT UPPER OVEN LAMP LATCH SWITCH LOWER LATCH SWITCH COOK SWITCH : CONVEC. I TIMER ! CONTACTS THERMOSTAT THERM SWITCH “>...
- Page 14 220V 50Hz ---- r---- FUSE 250V T6.3A RESISTOR LINE LINE A3 < RESISTOR LINE ACROSS BYPASS BYPASS CAPACITOR CAPACITOR CAPACITOR FAN MOTOR hEE[ 5%OUT 1 AT-t-” LPiIb” TURNTABLE SWITCH COOK ; LAMP r--------- THERMOSTAT ; SHEATH THERM0 ; HEATER SWITCH ) ;...
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Page 15: Description And Function Of Components
DESCRIPTION FUNCTION OF COMPONENTS VARIABLE COOKING CONTROL power transformer intermittently within a 30 The variable cooking control consists of the vari-motor, seconds time base. A half (l/2) of full power would be vari-switch, gear, select lever bracket assembly, etc. approx. 16 seconds of the switch on the 14 seconds of off the purpose of the vari-motor is to rotate a cam which time. -
Page 16: Microwavetimer
MICROWAVE TIMER Timer switch contacts: Timer motor: The timer switch contacts are mechanically opened or Timer is single speed type: cook time from 0 to 120 closed by turning the timer knob located on the timer minutes may be selected with the timer. The dial is divided motor shaft. -
Page 17: Dooropenmechanism
DOOR OPEN MECHANISM The door can be opened by pushing the open button on the control panel, refer to Figure 7. Pushing the open button, the open plate on the open device pushes the door lever on the door. Therefore, the lower and upper latch heads remove upwards, and then those latch heads are released from the lower and upper latch hooks. -
Page 18: Thermostat
THERMOSTAT Function of Thermostat The thermostat is composed of thermo-rod, shaft, contacts etc. The oven cavity temperature is sensed through a pushed This thermostat actuates their contacts by changing the hole provided at the cavity rear by means of the thermo-rod. pressure of oil filled in a capillary tube according to tempe- Furthermore, the oven cavity temperature can be preset by turning the temperature control knob to a desired... -
Page 19: Convection Cooking System
CONVECTION COOKING SYSTEM the preset temperature, the sheath heater is deenergized. This oven is designed with a hot air heating system where When the temperature inside the oven cavity thereafter food is not directly heated up by the sheath heater, but is drops below the preset temperature, the sheath heater is instead heated by forced circulation of the hot air produced energized again. - Page 20 CHAPTER SERVICING TROUBLESHOOTING GUIDE troubleshooting the microwave oven, it is helpful to IMPORTANT: United Kingdom and Australia Models. follow the Sequence of Operation in performing the checks. If the oven becomes inoperative because Many of the possible causes of trouble will require that a of a blown fuse in the lower latch- specific test be performed.
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Page 21: Troubleshooting Guide
TROUBLESHOOTING GUIDE (CONT’D) TEST PROCEDURE POSSIBLE CAUSE PROBLEM CORRECTION MICROWAVE COOKING CONDITION Replace. Defective cook switch. Microwave lamp does not light when cook switch is pushed. Procedure D on GENERAL. Defective magnetron therm0 cut-out. Defective upper latch switch Procedure 3. Procedure 4. -
Page 22: Convection Cooking Condition
TROUBLESHOOTING GUIDE (CONT’D) TEST PROCEDURE POSSIBLE CAUSE PROBLEM CORRECTION CONVECTION COOKING CONDITION Defective cook switch. Convection lamp does not light Replace. when cook switch is pushed. Defective magnetron therm0 cut out. Check conductive and replace. Defective upper latch switch. Procedure 3. Defective lower latch switch. -
Page 23: Test Procedures
TEST PROCEDURES PROCEDURE COMPONENT TEST NUMBER MAGNETRON ASSEMBLY TEST HlGH VOLTAGES ARE PRESENT DURING THE COOK CYCLE, SO EXTREME CAUTION SHOULD BE OBSERVED. DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING. To test for an open filament, isolate the magnetron from the high voltage circuit. -
Page 24: Sheath Heater Test
TEST PROCEDURES (CONT’D) PROCEDURE COMPONENT TEST NUMBER SHEATH HEATER TEST Make sure the heating element is fully cooled and test the foIlowings. a. Disconnect heater leads and measure the resistance with an ohmmeter. On the RX1 scale, the resistance between the heater leads should be approximately 35 ohms on Continental... -
Page 25: Warning
CHAPTER COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURES There is a broken dooc hinge or support. WARNING: to avoid possible exposure to microwave The door gasket or seal is damaged. energy; The door is bent or warped. Before operating the oven; There is any defective parts in the interlock, oven Make sure that... -
Page 26: Turntable Motor Removal
TURNTABLE MOTOR REMOVAL Disconned the wire leads from the motor. The motor Disconnect the oven power supply. assembly is now free. Remove the single (1) screw holding the turntable Remove the four (4) screws holding the turntable motor cover to the bottom side of the chassis base. motor to the mounting plate. -
Page 27: Fanmotorremoval
FAN MOTOR REMOVAL Remove the four (4) screws holding the chassis support Disconnect the oven power supply and remove the to the control panel back plate, cooling duct (A), outer case. waveguide and back cabinet. Discharge the high voltage capacitor. Remove the chassis suppoSt. - Page 28 Convection motor eater insulator (upper) Convection motor Oven lamp socket mounting bracket ermo cut-out Upper oven hinge netron cooling duct (B) Turntable coupting Lower decorat Figure 13. Oven Cavity Components...
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Page 29: Control Panel And Components Removal
CONTROL PANEL COMPONENTS REMOVAL THERMOSTAT The complete control panel should be removed for replace- ment of the components. To remove the control panel, Disconnect the wire leads from the thermostat. refer to Figure 14 and proceed as follows: Take off the temperature control knob and thermostat cam from the thermostat shaft. -
Page 30: Microwavetimer
Thermostat mounting bracket Convection timer lever (B) Convection Convection lamp indicator Panel plate /’ .’ c-‘ Microwave timer Q ‘i& ’ I! Microwave timer mounting plate ‘t ‘% \ ‘i Control panel back plate Open device assembly ‘1 i Vgriable open button 1 cooking 1 “IW”... -
Page 31: Upper Latch Switch And Monitor Switch (United Kingdom And Australia) Removal
UPPER LATCH SWITCH MONITOR SWITCH (United Kingdom and Australia) REMOVAL Remove the upper latch hook from the flange by mov- Disconnect oven from power supply ing it downward. remove the outer case. To remove the switch from the upper latch hook, push Discharge the high voltage capacitor. - Page 32 UPPER LOWER LATCH SWITCHES MONITOR SWITCH (AUSTRALIA UNITED KINGDOM ONLY) ADJUSTMENT In case the upper and lower latch switches do not operate properly due to a misadjustment, the following adjustment should be taken. 1. Loosen the single (1) screw holding the upper latch hook Latch to the oven cavity front flange and the single (1) screw Head...
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Page 33: Door Replacement And Adjustment
DOOR REPLACEMENT ADJUSTMENT DOOR ADJUSTMENT DOOR REPLACEMENT When removing and/or loosening hinge such as in the case 1. Disconnect the oven power supply, remove the outer of a door replacement, the following adjustment criteria case and discharge the high voltage capacitor. are taken. -
Page 34: Microwave Measurement
MICROWAVE MEASUREMENT Recommended instruments are: After the adjustment of the door interlock switches and NARDA 8 100 door is completed individually or collectively, the follow- NARDA 8200 leakage test must performed with a survey instrument and it must be confirmed that the result meets HOLIDAY HI 1500... -
Page 35: Schematic Diagram (Continental Europe Model)
220V - 50Hz CIRCUIT SUBJECT TO CHANGE WHT/18 WITHOUT NOTICE DOOR CLOSED COOK OFF CONDITION R2 : RESISTOF - “““iJ c,~~~~~~~~.3A VHTll8 CAPACITOR WIRE COLOUR CODE SYMBOL ------a : WHITE : RED : BLUE RED/l8 : BLACK i E%E GREEN YELLOW STRIPE WHTl1... -
Page 36: Pictorial Diagram (Continental Europe Model)
MAGNETRON THERMOSTAT Main chassis II r-El r---- TRANSFORMER Figure 18. Pictorial Diagram (Continental Europe Model) -
Page 37: Schematic Diagram (South Africa Model)
220V - 50Hz CIRCUIT SUBJECT TO CHANGE WITHOUT NOTICE DOOR CLOSED COOK OFF CONDITION F: FUSE 250V Ml OA C*:LINE BYPAS WIRE COLOUR CODE SYMBOL NHTI18 CAPACITOR : RED : WHITE : BROWN : BLUE : ‘ORANGE : BLACK : GREEN YELLOW STRIPE WHT/l... -
Page 38: Picporiac Diagram (South Africa Model)
t .c: 2 ’ DIY0... -
Page 39: Schematic Diagram (Australia Model)
CIRCUIT SUBJECT TO CHANGE WITHOUT NOTICE DOOR CLOSED COOK OFF CONDITION F,:FUSE 250V Ml OA WIRE COLOUR CODE SYMBOL : WHITE : RED : BLUE i ::%E : BLACK GREEN YELLOW STRIPE : SILICON FIBER GLASS WIRE TC:MAGNETRON : HIGH VOLTAGE WIRE THERM0... -
Page 40: Pictorial Diagram (Australia Model)
m II MONITOR UPPER LATCH SWITCH COMW r” MAGNETRON Main chassis LAMP RECTIFIER TRANSFORMER Control Panel Ass’y Figure 22. Pictorial Diagram (Australia Model) -
Page 41: Schematic Diagram (United Kingdom Model)
240V -5OHz CIRCUIT SUBJECT TO CHANGE WITHOUT NOTICE r-&lb- WHTll8 RED118 DOOR CLOSED COOK OFF CONDITION C4:LINE ACROSS CAPACITOR Rz: RESISTOR C*:LINE BYPAS WIRE COLOUR CODE SYMBOL WHTll8 CAPACITOR C3:LINE BYPASS : RED : WHITE CAPACITOR : BROWN : BLUE : ORANGE : BLACK : GREEN... -
Page 42: Pictorial Diagram (United Kingdom Model)
(zgqr--fr-- UPPER MAGNETRON Jr / Main chassis MICROWAVE LAMP Vori-motor Ass’y ’ VARI- ’ SWITCH =--I HIGH VOLTAGE CAPACITOR MAGNETRON THERM0 CONVECTION MOTOR CUT-OUT POWER TRANSFORMER Control Panel Ass’y Figure 24. Pictorial Diagram (United Kingdom Model) -
Page 43: Packing And Accessories
PACKING ACCESSORIES TRAYHOLDER ---.. (SPADF0390WREO) BAKING TRAY TRAY (SPADPOl94WREO) TURNTABLE POLYETHYLENE 1 I//’ (SSAKHQOO5YBEO) OPERATION MANUAL CONVECTION MICROWAVE /mrl COOK BOOK TURNTABLE STYLOFORM BAKING RACK (SPADP0252WREO) PACKING CASE (SPAKCI 283WREO: Continental Europe) Australia, United Kingdom, South Africa ACCESSORIES FIXING METHOD... -
Page 44: Parts List
PARTS LIST IMPORTANT: Parts marked with “ ” (I-7) are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set. REF. NO. PART NO. DESCRIPTION Q’TY: CODE... - Page 45 Q’TY CO’DE DESCRIPTION PART NO. REF. NO. CABINET PARTS FDAi-0185WRYO Base cabinet Rear cabinet (Continental Europe) 2- 2 GCtiVA0107WRTA GCGVA0107WRTB Rear cabinet (United Kingdom, Australia and South Africa) 2- 3 Outer case cabinet (Continental Europe) GCABU0095WRTA GCABU0096WRTA Outer case cabinet (United Kingdom, Australia and South Africa) 2- 4...
- Page 46 REF. NO. PART NO. DESCRIPTION O’TY CODE 2-27 PTPEH0024WREO Water proof tape 2-28 PCAPH0023WREO Cabinet cap (Continental Europe) PCuSG0217WRPO Cabinet cushion 2-29 (United Kingdom, Australia and South Africa) 2-30 LANGH0091WRWO Turntable motor supporting plate CONTROL PANEL *PARTS FPNLC0328WRYO Control panel frame assembly (Continental Europe) FPNLC0329WRYO Control panel frame assembly...
- Page 47 Q’TY CbDE DESCRIPTION REF. NO. PART NO. OVEN PARTS FOVN-0183WRYO Oven cavity 4- 2 FCPL-0023wRKO Turntable coupling 4- 3 FRi5LM002OWRYO Turntable roller 4- 4 PcOvPO255wREO Waveguide cover 4- 5 FTNT-0020WRHA Turntable tray 4- 6 PGLSP0123wREO Oven lamp glass 4- 7 PDUC-0340WRW0 Steam duct 4- 8...
- Page 48 PART NO. DESCRIPTION CODE Q’TY REF. 1\10. * 4-44 PPiPU0019WREO Pipe (L) PPiPUOO2OWREO Pipe (S) 4-45 Insulation spacer PSPA-0099WREO 4-46 ~cusuO408wRI'O Water proof cushion (A) 4-47 Pcusu0407wRP0 Water proo'f cushion (B) 4-48 4-49 MLEVF0124WREO Monitor switch lever (United Kingdom and Australia) *: See page 50,South Africa and Australia Models...
- Page 49 Q’TY CODE DliSCRlPTlON PART NO. REF. NO. (United Kingdom and Australia) LBNDCQ004CBEO Wire holder, WH-1 6-17 (Continental Europe, and United Kingdom) LBNDCQ004CBEO Wire holder, WH-1 (Australia and South Africa) LHLDWQ003YBEO Wire holder (Puree Lock "MI') 6-18 LHLDWQ004YBEO Wire holder (Puree Lock "L"). 6-19 6-20 LHLDWQOO5YBEO...
- Page 50 REF. NO. PART NO. DESCRIPTION CODE 7- 5 LX-BZ0155WRE0 Screw; oven lamp access cover mtg (United Kingdom, Australia and South Africa) LX-BZ0170WRE0 Screw; convection timer lever (B) mtg 7- 6 * 7: Screw; cord mounting bracket mtg LX-BZ0177WREO 7- 8 LX-BZ0184WREO Screw;...
- Page 51 Q’TY CODE DESCRIPTION REF. NO. PART NO. Washer; sheath heater and turntable XWHSD40-08120 7-37 motor mtg XWwSD60-08000 Washer; (outer tooth); power transformer 7-38 xW'HNZ30-05060 Washer; lamp access cover mtg 7-39 xWHuw30-05000 Washer; heater insulator (lower) mtg 7-40 Washer; auxiliary fan mtg 7-41 XWHUW45-08120 XWSSD40-10000...
- Page 52 CABINET PARTS...
- Page 53 --------------------------------e-J -z’ . ..a_ -... _-’...
- Page 55 DOOR PARTS MISCELLANEOUS .jlwe*...
- Page 56 6-23 6-10 6-12 6-13 (South Africa) 6-19 6-14 6-21 (Continental Europe) 6-15 (United Kingdom)
- Page 57 FIXING PROCEDURE OF CORD ANCHORAGE As for the above subject, sometime it may cause to have wrong fixing about two pieces of cord anchorage General : unit. But this cord anchorage is an important part for the safety, therefore it must be fixed correctly firmly.
- Page 58 ‘81 @ SHARP CORP. (7N2.15E) Printed in Japan...