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R-231F

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Содержание R-231F

Страница 1: ...UTION MICROWAVE RADIATION 1 WARNING 1 PRODUCT SPECIFICATIONS 2 GENERAL INFORMATION 2 APPEARANCE VIEW 3 OPERATION SEQUENCE 4 FUNCTION OF IMPORTANT COMPONENTS 5 SERVICING 6 TEST PROCEDURE 8 TOUCH CONTROL PANEL 14 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 18 MICROWAVE MEASUREMENT 23 WIRING DIAGRAM 24 PICTORIAL DIAGRAM 25 CONTROL PANEL CIRCUIT 26 PARTS LIST 27 SHARP CORPORATION SERVICE MANUAL COO...

Страница 2: ...R 231F 32 ...

Страница 3: ...t a microwave energy absorbing load attached Never look into an open waveguide or antenna while the device is energized WARNING Never operate the oven until the following points are ensured A The door is tightly closed B The door brackets and hinges are not defective C The door packing is not damaged D The door is not deformed or warped E There is not any other visible damage with the oven Servici...

Страница 4: ...e Dimensions Width 460 mm Height 275 mm including foot Depth 353 mm Cooking Cavity Dimensions Width 322 mm Height 212 mm Depth 336 mm Turntable diameter 272 mm Control Complement Touch Control System Timer 0 99 minutes 99 seconds Microwave Power for Variable Cooking Repetition Rate 100P Full power throughout the cooking time 70P approx 70 of FULL Power 50P approx 50 of FULL Power 30P approx 30 of ...

Страница 5: ... not pressed HIGH is automatically selected Press to alter the cooking result for automatic opera tions 6 TIMER CLOCK PAD Press to set clock timer child lock or demonstration mode 7 STOP CLEAR PAD Press to clear during programming Press once to stop operation of oven during cooking press twice to cancel cooking programme 8 INSTANT COOK START PAD Press once to cook for 1 minute at 100 or increase b...

Страница 6: ...ch switch COM NO Closed Open 2nd interlock relay control switch COM NO Closed Open Monitor switch COM NC Open Closed The circuits to the power transformer fan motor and turntable motor are cut off when the 1st latch switch and 2nd interlock relay control switch are made open The oven lamp remains on even if the oven door is opened after the cooking cycle has been interrupted because the relay RY1 ...

Страница 7: ...n button pushes up the switch lever and then the switch lever pushes up the latch head The latch heads are moved upward and released from latch hook Now the door will open Figure D 1 Door Open Mechanism 1ST LATCH SWITCH AND 2ND INTERLOCK RELAY CONTROL SWITCH 1 When the oven door is closed the contacts COM NO must be closed 2 When the oven door is opened the contacts COM NO must be opened MONITOR S...

Страница 8: ...leted carry out 3D checks and recon nect the leads to the primary of the power transformer REMEMBER TO CHECK 4R 1 Reconnect all leads removed from components during testing 2 Replace the outer case cabinet 3 Reconnect the supply 4 Run the oven Check all functions Microwave ovens should not be run empty To test for the presence of microwave energy within a cavity place a cup of cold water on the ov...

Страница 9: ...utlet Display does not operate prop erly when STOP CLEAR pad is touched Oven lamp does not light at door opened Display ap pears Oven does not start when the START pad is touched Dis play appears Oven lamp does not light Dis play appears Fan motor does not operate Display appears Turntable motor does not oper ate Display appears Oven or any electrical parts does not stop when cooking time is 0 or ...

Страница 10: ...he start of the test 3 Temperature of the water The initial temperature of the water is 10 1 C 4 Select the initial and final water temperature so that the maximum difference between the final water temperature and the ambient temperature is 5 C 5 Select stirring devices and measuring instruments in order to minimize addition or removal of heat 6 The graduation of the thermometer must be scaled by...

Страница 11: ...e equation is P 80 x T P 80 x 10 C 800 Watts JUDGEMENT The measured output power should be at least 15 of the rated output power CAUTION 1 C CORRESPONDS TO 80 WATTS REPEAT MEASUREMENT IF THE POWER IS INSUFFICIENT a Primary winding 2 5 ohms approximately b Secondary winding 176 ohms approximately c Filament winding less than 1 ohm C HIGH VOLTAGE RECTIFIER ASSEMBLY TEST HIGH VOLTAGE RECTIFIER TEST C...

Страница 12: ... S C Depressed S C O C COM Common terminal NO Normally open terminal NC Normally close terminal S C Short circuit O C Open circuit If incorrect readings are obtained make the necessary switch adjustment or replace the switch CARRY OUT 4R CHECKS F TEMPERATURE FUSE TEST CARRY OUT 3D CHECKS Disconnect the leads from the terminals of the temperature fuse Then using an ohmmeter make a continuity test a...

Страница 13: ... 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 CAUTION ONLY REPLACE HIGH VOLTAGE FUSE WITH THE CORRECT VALUE REPLACE MENT FUSE T6 3A N L LINE CROSS CAPACITOR 0 068µ AC250V NOISE SUPPRESSION COIL LINE BYPASS CAPACITOR 0 0022µ AC250V LINE BYPASS CAPACITOR 0 0022µ AC250V NOISE FILTER WHT RED K T...

Страница 14: ...lay control switch connecter Use the Key unit matrix indicated on the control panel schematic and place a jumper wire between the pins that correspond to the STOP CLEAR pad making momentary contact If the control unit responds by clearing with a beep the key unit is faulty and must be replaced If the control unit does not respond it is faulty and must be replaced If a specific pad does not respond...

Страница 15: ...d to primary side Low voltage transformer or secondary circuit defective of low voltage transformer Check and replace control unit 3 Only pattern at a is broken Insert jumper wire J1 and solder 4 Pattern at a and b are broken Insert the coil RCILF2003YAZZ between c and d NOTE At the time of making these repairs make a visual inspection of the varistor Check for burned damage and exam ine the trans...

Страница 16: ... is supplied 2 Indicator Circuit This circuit consists of 4 digits 12 segments and 3 common electrodes using a Liquid Crystal Display TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 3 Power Source Circuit This circuit generates voltage necessary in the control unit from the AC line voltage In addition the synchro nizing signal is available in order to compose a basic standard time in t...

Страница 17: ...accordance with the Model in operation is applied to set up its function 14 P43 IN To input signal which communicates the door open close information to LSI Door close H level signal 0V Door open L level 5V 15 BZ OUT Signal to sound buzzer 2 0 kHz A key touch sound B Completion sound 16 R00 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P23 K00 K01 and K02 ter...

Страница 18: ...cuit 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 cook ing modes variable cooking the sig nal turns to H level and L level in repetitionaccordingtothepowerlevel 35 SEG3 OUT Terminal not used 36 SEG4 OUT Oven lamp fan motor and turntable motor driving signal To turn on and off shut off relay RY1 The sq...

Страница 19: ... models the power supply cord be tween the touch control panel and the oven proper is so long enough that they may be separated from each other For those models therefore it is possible to check and repair the controls of the touch control panel while keeping it apart from the oven proper in this case you must short both ends of the door sensing switch on PWB of the touch control panel with a jump...

Страница 20: ... the right side of the outer case 4 Remove the remaining five 5 screws from the rear of the outer case 5 Slide the entire outer case back out about 1 inch 3 cm to free it from retaining clips on the cavity face plate 6 Lift entire outer case from the unit 7 Discharge the H V capacitor before curring out any 1 Disconnect the supply 2 Door opened and wedged open 3 Discharge high voltage capacitor To...

Страница 21: ...the leads of the power transformer from high voltage capacitor 5 Remove the two 2 screws holding the transformer to bottom plate from the upper side 6 Remove the remaining two 2 screws from the bottom 7 Remove the transformer 8 Now the power transformer is free POWER TRANSFORMER REMOVAL Re install 1 Rest transformer on the bottom plate with its primary terminals toward the oven face plate 2 Secure...

Страница 22: ... 4 Insert the tab of the turntable motor cover into the hole of the bottom plate REMOVAL 1 CARRY OUT 3D CHECKS 2 Remove the magnetron from the waveguide Refer to chapter MAGNETRON REMOVAL 3 Disconnect the wire leads from the fan motor 4 Release the wire leads from the hole of the fan duct 5 Remove the two 2 screws holding the fan duct to the oven cavity 6 Release the fan motor assembly from the ov...

Страница 23: ...n First check upper position of latch hook pushing and pulling upper portion of door toward the oven face Then check lower portion of the Re install 1 Insert the moulding cord stopper of power supply cord into the square hole of the rear cabinet referring to the Figure C 3 b 2 Install the earth wire lead of power supply cord and the earth angle to the oven cavity with one 1 screw and tight the scr...

Страница 24: ...of door panel on two 2 hole of upper and lower oven hinges 6 Re install choke cover to door panel by pushing Note After any service to the door A Make sure that 1st latch switch 2nd interlock relay control switch and monitor switch are oper ating properly Refer to chapter Test Proce dures B An approved microwave survey meter should be used to assure compliance with proper micro DOOR REPLACEMENT wa...

Страница 25: ...rowave ovens must be used for test ing Recommended instruments are NARDA 8100 NARDA 8200 HOLADAY HI 1500 SIMPSON 380M 2 Place the oven tray into the oven cavity 3 Place the load of 275 15ml of water initially at 20 5 C in the centre of the oven tray The water container should be a low form of 600 ml beaker with inside diameter of approx 8 5cm and made of an electrically non conductive material suc...

Страница 26: ...0Hz BLU BRN LIVE NEUTRAL G Y FUSE T6 3A N L LINE CROSS CAPACITOR 0 068µ AC250V NOISE SUPPRESSION COIL LINE BYPASS CAPACITOR 0 0022µ AC250V LINE BYPASS CAPACITOR 0 0022µ AC250V NOISE FILTER H V FUSE 0 6A CAPACITOR 0 91µF AC2100V TEMPERATURE FUSE120 C OVEN POWER TRANSFORMER MAGNETRON H V RECTIFIER TURNTABLE MOTOR FAN MOTOR OVEN LAMP MONITOR SWITCH CONTROL UNIT 1ST LATCH SWITCH 2ND INTERLOCK RELAY CO...

Страница 27: ...RG GRY N RED WHT L GRY GRY N C N O GRY GRY Cabinet side Front side RED WHT 2ND INTERLOCK RELAY CONTROL SWITCH RED POWER TRANSFORMER HIGH VOLTAGE FUSE G Y B L U B R N EARTH LIVE N E U T R A L POWER SUPPLY CORD NOISE FILTER OVEN CAVITY BACK PLATE GRN GRY WHT WHT GRY GRY ORG RED GRY CN A CN B 2 ORG 1 3 ORG GRY GRN 2 1 COM ORG RED RED ORG N O OVEN LAMP TEMPERATURE FUSE OVEN WHT GRN GRN CONTROL UNIT SP...

Страница 28: ...R30 3 3k R20 15k R10 15k R50 20kF R6 15k C10 0 1µ 25v C4 0 01µ 25v C20 0 1µ 25v C5 0 1µ 25v C7 0 1µ 25v C6 0 1µ 25v 1 14 15 29 45 54 30 44 C3 0 01µ 25v C40 0 01µ 25v C11 0 01µ 25v C1 0 1µ 25v ZD1 HZ4B3 J1 D20 D21 D22 J10 J11 J12 J13 J14 J15 VRS1 10G471K R4 910 1 2w R41 15k R40 4 7k R75 220k R76 220k R77 220k R78 220k SP1 D40 IF NOT SPECIFIED 1 10W 5 IF NOT SPECIFIED 1SS270A Q10 DTA143EAK Q21 DTD14...

Страница 29: ... 1 1 FUNTKB097WREZ Key unit 1 AV 3 2 JBTN B151WRFZ Open button 1 AF 3 3 MSPRCA050WRE0 Open button spring 1 AB 3 4 DPWBFC227WRUZ Control unit 1 BE 3 5 QCNC A014WRZZ Rubber connector 1 AE 3 6 RLCDSA100DRZZ Liquid crystal display 1 AU 3 7 XEPSD30P08XS0 Screw 3mm x 8mm 3 AA OVENPARTS 4 1 PHOK A122WRFZ Latch hook 1 AM 4 2 LBNDKA038WRP0 Capacitor holder 1 AF 4 3 NFANJA029WRE0 Fan blade 1 AK 4 4 PDUC A77...

Страница 30: ... order filled prompty and correctly please furnish the following information 1 MODEL NUMBER 2 REF NO 3 PART NO 4 DESCRIPTION Note The parts marked may cause undue microwave exposure The parts marked are used in voltage more than 250V REF NO PART NO DESCRIPTION Q TY CODE 7 4 LX CZ0052WRE0 Special screw 2 AA 7 5 LX EZA042WRE0 Special screw 2 AB 7 6 XHPSD30P06000 Screw 3mm x 6mm 1 AA 7 7 XHPSD40P0800...

Страница 31: ...ND CABINET PARTS 7 8 2 1 7 8 7 8 7 8 7 8 1 9 6 3 4 11 4 3 7 3 7 5 2 2 4 7 4 10 6 6 4 2 6 1 6 2 7 3 7 2 7 3 7 9 7 9 1 7 1 12 7 1 4 5 7 3 4 13 7 6 7 3 7 3 7 2 4 12 7 1 1 4 1 6 1 10 1 11 1 10 1 14 1 3 4 1 7 2 2 2 4 6 1 8 1 13 4 9 2 3 1 5 4 8 4 4 7 1 7 1 1 1 1 2 7 7 7 4 4 9 7 1 ...

Страница 32: ...ROWAVE OVEN TOP PAD ASSEMBLY FPADBA459WRKZ WRAP COVER SSAKHA014WRE0 SPAKCD668WREZ BOTTOM PAD ASSEMBLY FPADBA460WRKZ DOOR PROTECT SHEET SPADPA580WRE0 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 without prior writte...

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