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R-222T(W)

12 – 2

[2] Pictorial Diagram (Figure S-1)

Figure S-1. Pictorial Diagram

HIGH VOLTAGE CAPACITOR

HIG

H

VOLTAGE

FUSE

H.V

.RECTIFIER

HIG

H

VOLTAG

E

COMPONENTS

MAGNETRON

POWER TRANSFORMER

RED

WHT

FUSE

LIVE

NEUTRAL

BLU

GRY

RED

BRN

BLU

L

N

WHT

RED

Powe

rSupply

Cord

Ove

n

Cavity

Bac

k

Plate

Screw

Nois

e

Filter

G / Y

BLU

MONITOR SWITCH

1ST

.LATC

H

SWITCH

COM

COM

RED

N.C.

N.O.

N.O.

COM

GRY

GRN

GRN

GRY

TEMPERATURE FUS

E

(OVEN)

2ND

.INTERLOCK

RELA

Y

CONTROL

SWITCH

BLK

ORG

GRN

CONTRO

L

PANEL

WHT

RY1

2ND. INTERLOCK RELAY

CN-B

2

1

CN-A

N.O.

COM.

T1

3

1

RY2

ORG

RED

BLK

RED

CN-A

2

GRY

1

3

CN-B

2 1

GRN

GRY

COM

N.O.

GRY

GRY

TURNTABLE MOTOR

RED

RED

GRY

GRY

WHT

ORG

FA

N

MOTOR

OVE

N

LAMP

RED

GRY

WHT

ORG

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Содержание R-222T Carousel

Страница 1: ...APTER 10 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE CHAPTER 11 MICROWAVE MEASUREMENT CHAPTER 12 CIRCUIT DIAGRAMS Parts List SERVICE MANUAL R 222T W CONTENTS SHARP CORPORATION This document has been published to be used for after sales service only The contents are subject to change without notice S7019R222TPJW MICROWAVE OVEN R 222T W MODELS In the interest of user safety the oven should be res...

Страница 2: ...e K TOUCH CONTROL PANEL ASSEMBLY TEST 8 4 12 Procedure L KEY UNIT MEMBRANE SWITCH TEST 8 4 13 Procedure M RELAY TEST 8 5 14 Procedure N PROCEDURES TO BE TAK EN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD PWB IS OPEN 8 5 CHAPTER 9 TOUCH CONTROL PANEL ASSEM BLY 1 OUTLINE OF TOUCH CONTROL PANEL 9 1 2 DESCRIPTION OF LSI 9 1 3 SERVICING FOR TOUCH CONTROL PANEL 9 3 4 PRECAUTIONS FOR USING LEAD FRE...

Страница 3: ... secured Never operate the device without a microwave energy absorbing load attached Never look into an open waveguide or antenna while the device is energized 3 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 ...

Страница 4: ...to connect the supply after the outer case has been removed in this event carry out 3D checks and then disconnect the leads to the pri mary of the power transformer Ensure that these leads remain iso lated from other components and the oven chassis Use insulation tape if necessary When the testing is completed carry out 3D checks and reconnect the leads to the primary of the power transformer REME...

Страница 5: ...m Height 275 mm including foot Depth 380 mm Turntable diameter 272 mm Control Complement Touch Control System Timer 0 99 minutes 99 seconds Clock 1 00 12 59 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 FULL Power 10P approx 10 of FULL Power INSTANT ACTION pads EXPRESS DEFROS...

Страница 6: ... automatic operations 4 TIMER CLOCK PAD Press to set clock timer child lock or demonstration mode 5 STOP CLEAR PAD Press to clear during programming Press once to stop operation of oven during cooking press twice to cancel cooking programme 6 INSTANT COOK START PAD Press once to cook for 1 minute at 100 or increase by 1 minute multiples each time this pad is pressed during cooking Press to start o...

Страница 7: ...hanically controlled by oven door and monitors the operation of the 1st latch switch and the 2nd interlock relay RY2 1 When the oven door is opened during or after the cycle of a cooking program the 1st latch switch and 2nd interlock relay control switch must open their contacts first After that the con tacts COM NC of the monitor switch can be closed 2 When the oven door is closed the contacts CO...

Страница 8: ...he fuse T6 3A blows to prevent an electric shock of fire hazard 5 HIGH VOLTAGE FUSE The high voltage fuse blows when the high voltage rectifier or the mag netron is shorted 6 TEMPERATURE FUSE 150C OVEN The temperature fuse located on the top of the oven cavity is designed to prevent damage to the oven if the foods in the oven catch fire due to over heating produced by improper setting of cook time...

Страница 9: ...VEN LAMP WALL OUTLET MISADJUSTMENT SWITCH HOME FUSE OR BREAKER BLOCKED COOLING FAN BLOCKED VENTILATION NOISE FILTER KEY UNIT MEMBREANE SWITCH H V FUSE OFF CONDITION PROBLEM CONDITION POSSIBLE CAUSE AND DEFECTIVE PARTS TEST PROCEDURE ON CONDITION A B C CK D E J L I N M K H G G F E E M RE CKCK RE CK CK CK CK CK Home fuse blows when pow ersupply cord is plugged into wall outlet FUSE T6 3A blows when ...

Страница 10: ... 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 0 1 C at minim...

Страница 11: ...ect the ohmmeter across the terminal of the high voltage rectifier and note the reading obtained Reverse the meter leads and note this second reading The normal resistance is infinite in one direction and more than 100 kΩ in the other direction CARRY OUT 4R CHECKS NOTE FOR MEASUREMENT OF THE RESISTANCE OF THE RECTIFIER THE BATTERIES OF THE MEASURING INSTRUMENT MUST HAVE A VOLTAGE AT LEAST 6 VOLTS ...

Страница 12: ... T6 3A is blown by incorrect door switching replace the defective switch es and the fuse T6 3A If the fuse T6 3A is blown there is a shorts or grounds in electrical parts or wire harness Check them and replace the defective parts or repair the wire harness CARRY OUT 4R CHECKS CAUTION ONLY REPLACE FUSE T6 3A WITH THE CORRECT VALUE REPLACEMENT 9 Procedure I NOISE FILTER TEST CARRY OUT 3D CHECKS Disc...

Страница 13: ...is faulty 1 In connection with pads a When touching the pads a certain group of pads do not produce a signal b When touching the pads no pads produce a signal 2 In connection with indicators a At a certain digit all or some segments do not light up b At a certain digit brightness is low c Only one indicator does not light up d The corresponding segments of all digits do not light up or they contin...

Страница 14: ...low for repair Problem POWER ON indicator does not light up CARRY OUT 3D CHECKS NOTE At the time of making these repairs make a visual inspection of the varistor Check for burned damage and examine the transformer with a tester for the presence of layer short circuit check the primary coil resistance If any abnormal condition is detected replace the defective parts CARRY OUT 4R CHECKS RELAY SYMBOL...

Страница 15: ... works on commercial frequency 7 2nd Interlock Relay Control Switch A switch to tell the LSI if the door is open or closed 2 DESCRIPTION OF LSI The I O signal of the LSI are detailed in the following table Symbol Voltage Application VSS 5V LSI IC1 n o i t p i r c s e D O I l a n g i S o N n i P 1 P50 IN Signal coming from touch key When either G7 line on key matrix is touched a corresponding signa...

Страница 16: ... from the touch key 51 AVSS IN A D converter power source voltage The power source voltage to drive the A D converter in the LSI 52 P11 IN To input signal which communicates the door open close information to LSI Door close H level signal 0V Door open L level signal 5V 53 P10 OUT Terminal not used 54 P33 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P50 P51 P...

Страница 17: ...included of the touch control panel while keeping it connected to the oven b On some models the power supply cord between 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...

Страница 18: ...rdingly 3 Soldering As the melting point of lead free solder Sn Ag Cu is higher and has poorer wettability flow to prevent damage to the land of the PWB extreme care should be taken not to leave the bit in contact with the PWB for an extended period of time Remove the bit as soon as a good flow is achieved The high content of tin in lead free solder will cause premature corrosion of the bit To red...

Страница 19: ...efore wiring 1 Disconnect the power supply cord 2 Open the door and block it open 3 Discharge the high voltage capacitor and wait for 60 seconds 2 Don t let the wire leads touch to the following parts 1 High voltage parts Magnetron power transformer High voltage capacitor High voltage rectifier assembly and High voltage fuse 2 Hot parts Oven lamp Magnetron power transformer and Oven cavity 3 Sharp...

Страница 20: ... REPLACING HIGH VOLTAGE RECTIFIER ASSEMBLY ENSURE THAT THE CATHODE EARTH CONNECTION IS SECURELY FIXED TO THE CAPACI TOR HOLDER WITH AN EARTHING SCREW CAUTION DO NOT REPLACE ONLY HIGH VOLTAGE RECTIFIER WHEN REPLACING IT REPLACE HIGH VOLTAGE REC TIFIER ASSEMBLY 5 MAGNETRON REMOVAL 1 REMOVAL 1 CARRY OUT 3D CHECKS 2 Disconnect the wire leads from the magnetron 3 Remove the two 2 screws holding the air...

Страница 21: ... pliers CAUTION MAKE SURE THAT ANY PIECES DO NOT ENTER THE GAP BETWEEN THE ROTOR AND THE STATOR OF THE FAN MOTOR BECAUSE THE ROTOR IS EASY TO BE SHAVEN BY PLIERS AND METAL PIECES MAY BE PRO DUCED DO NOT TOUCH THE PLIERS TO THE COIL OF THE FAN MOTOR BECAUSE THE COIL MAY BE CUT OR INJURED DO NOT DISFIGURE THE BRACKET BY TOUCHING WITH THE PLIERS 6 Remove the fan blade from the shaft of the fan motor ...

Страница 22: ...h from the control panel frame 2 REINSTALL 1 Remove remaining adhesive on the control panel frame surfaces with a soft cloth soaked in alcohol 2 Tear the backing paper from the new membrane switch 3 Insert the ribbon cable of the membrane switch into the slit of the control panel frame 4 Adjust the upper edge and right edge of the membrane switch to the small depression on the surface of the contr...

Страница 23: ...ving it back and forth and up and down In and out play of the door allowed by the upper and lower position of the latch hook should be less than 0 5mm The vertical position of the latch hook should be adjusted so that the 1st latch switch and 2nd interlock relay control switch are acti vated with the door closed The horizontal position of the latch hook should be adjusted so that the plunger of th...

Страница 24: ...l 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 1 Make sure that 1st latch switch 2nd interlock relay control switch and monitor switch are operating properly Refer to chapter Test Procedures 2 An approved microwave survey meter should be used to assure compliance with proper microwave radiation emission limitation...

Страница 25: ...owave ovens must be used for testing 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 such ...

Страница 26: ...V FUSE 0 6A CAPACITOR 0 91µF AC2000V NOTE indicates components with potentials above 250V OVEN LAMP TURN TABLE MOTOR FAN MOTOR MONITOR SWITCH 1ST LATCH SWITCH TTM M F L O A1 COM 2ND INTERLOCK RELAY CONTROL SWITCH B2 B1 RY 1 RY 2 CONTROL UNIT 2ND INTERLOCK RELAY A3 N O TEMPERATURE FUSE OVEN POWER TRANSFORMER MAGNETRON H V RECTIFIER EARTH 230 240V 50Hz BLU BRN LIVE NEUTRAL G Y FUSE T6 3A N L NOISE S...

Страница 27: ...HT RED Power Supply Cord Oven Cavity Back Plate Screw Noise Filter G Y BLU MONITOR SWITCH 1ST LATCH SWITCH COM COM RED N C N O N O COM GRY GRN GRN GRY TEMPERATURE FUSE OVEN 2ND INTERLOCK RELAY CONTROL SWITCH BLK ORG GRN CONTROL PANEL WHT RY1 2ND INTERLOCK RELAY CN B 2 1 CN A N O COM T1 3 1 RY2 ORG RED BLK RED CN A 2 GRY 1 3 CN B 2 1 GRN GRY COM N O GRY GRY TURNTABLE MOTOR RED RED GRY GRY WHT ORG F...

Страница 28: ...S1 T1 D1 D2 D3 D4 D1 D4 1N4002L X 4 SEG1 SEG3 SEG2 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 COM2 COM1 COM0 B1 DOOR 5V INT BZ COM M C40 GND R4 910 1 2W CN B AC AC AC230 2 40V 50HZ G4 G5 G6 G1 LSI UNIT J1 DTA123JS G8 G9 G10 G2 G3 G7 VR R30 3 3K 0 01uF 50V KEY UNIT COM1 COM2 COM3 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 P71 P72 AVDD P01 P00 RESET X2 X1 VSS VDD XT2 XT1 IC P53 P52 P51 P50 P02 17 R50 R51 R7...

Страница 29: ...R 222T W 12 4 4 Printed Wiring Board Figure S 3 Figure S 3 Printed Wiring Board ...

Страница 30: ...R 222T W 12 5 MEMO ...

Страница 31: ...UMBER 2 REF NO 3 PART NO 4 DESCRIPTION Parts marked may cause undue microwave exposure Parts marked are used in voltage more than 250V 1 OVEN PARTS 2 DOOR AND CONTROL PANEL PARTS INDEX SPAKCF094WREZ 6 1 TURNTABLE TRAY 6 5 INSTRUCTION BOOK 6 2 TURNRTABLE SUPPORT INTO THE OVEN CAVITY Not replaceable items TRAY PAD ASSY CPADBA287WRKZ PACKING CASE MICROWAVE OVEN TOP PAD ASSEMBLY FPADBA606WRKZ POLYETHY...

Страница 32: ...7 2 1 6 1 3 7 1 2 2 4 1 4 10 4 2 7 8 7 8 7 2 7 9 7 9 4 3 4 16 6 1 6 2 7 8 7 6 7 8 4 9 1 7 7 1 4 5 4 11 4 8 7 8 1 13 7 8 7 6 4 4 4 14 4 12 7 2 7 1 1 5 1 14 1 1 1 2 7 7 4 13 7 4 4 15 7 6 7 3 7 10 1 1 1 9 1 4 4 7 2 3 2 3 1 11 7 1 1 10 1 12 7 5 7 8 B B 6 6 4 13 4 17 ...

Страница 33: ... 1 10 QFS TA014WRE0 Temperature fuse 150C Oven AG 1 11 RTRN A755WRZZ Power trnasformer BH 1 11 RTRN A805WRZZ Power trnasformer Interchangable BG 1 12 FPWBFA387WRKZ Noise filter AW 1 13 QFS CA027WRZZ Fuse T6 3A AG 1 14 QFS IA016WRZZ High voltage fuse 0 60A AN 1 14 QFS IA004WRE0 High voltage fuse 0 60A Interchangable AK CABINET PARTS 2 1 GCABUB220WRPZ Outer case cabinet BC 2 2 GDAI A459WRWZ Bottom p...

Страница 34: ...R 222T W 4 2 DOOR AND CONTROL PANEL PARTS 5 2 6 5 5 5 5 4 5 8 5 3 5 6 5 7 5 1 6 4 3 2 3 1 1 3 1 3 6 3 5 3 4 3 8 3 7 3 3 3 1 2 ...

Страница 35: ... QCNC A023WRZZ Rubber connector AE 3 6 RLCDSA106DRZZ Liquid crystal display AQ 3 7 XEPS730P08XS0 Screw 3mm x 8mm AA 3 8 PCUSUA633WREZ Cushion AE DOOR PARTS 5 1 FDORFA397WRTZ Door panel assembly BB 5 2 GWAKPA984WRRZ Door frame AW 5 3 HPNL A764WREZ Door screen AP 5 4 LSTPPA205WRFZ Latch head AF 5 5 MSPRTA187WRE0 Spring AC 5 6 PSHEPA782WREZ Sealer film AG 5 7 GCOVHA424WRFZ Choke cover AK 5 8 PCUSUA27...

Страница 36: ... ALL RIGHTS RESERVED No part of this publication may be reproduced stor ed in retrieval systems or transmitted in anyform or by any means electronic mechanical photocopy ing recording or other wise without prior written permission of the publisher ...

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