Sharp Carousel R-3S56 Service Manual Download Page 30

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R-3S56

Figure S-3. Printed Wiring Board

LED72

LED71

R76

R75

R78

R74

R77

D91

D93

SW1

R91

R93

R92

SW2 SW3

D92

Q74

Q73

IC1

R72

CF1

R10

C10

R73

R71

SW4

Q10

ZD10

Q71

Q72

SW6

SW7

SW5

Q40

C20

C50

R81

C80

R20

D81

RY1

R51

R50

D50

D51

Q80

Q82

SP40

R40

(F1)

(J2)

VRS1

CN-A

(J1)

(Q3)

RY2

TTM

FAN M

POWER

(ZD3)

(R6)

(J3)

Q81

R80

D82

Q20

C81

DOOR SW

CN-B

Summary of Contents for Carousel R-3S56

Page 1: ... OVEN TABLE OF CONTENTS Page CAUTION 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 24 WIRING DIAGRAM 25 PICTORIAL DIAGRAM 26 CONTROL PANEL CIRCUIT 27 PRINTED WIRING BOAR...

Page 2: ...R 3S56 ...

Page 3: ...sed to the microwave energy which may radiate from the magnetron or other microwave generating devices if it is improperly used or connected All input and output microwave connections waveguides flanges and gaskets must be 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 WARNING Never oper...

Page 4: ...trol System Timer 0 99 minutes 90 seconds Microwave Power for Variable Cooking Repetition Rate HIGH Full power throughout the cooking time MEDIUM HIGH approx 70 of FULL Power MEDIUM approx 50 of FULL Power MEDIUM LOW approx 30 of FULL Power LOW approx 10 of FULL Power TIME pads AUTO COOK pad STOP CLEAR pad SERVES POWER LEVEL pad START INSTANT COOK pad AUTO COOK MENUS Set Weight Approx 14 kg PRODUC...

Page 5: ... menu c POWER LEVEL SERVES PAD Press to select microwave power setting If not pressed 100 is automatically selected Press to enter serves after selecting AUTO COOK menu d STOP CLEAR PAD Press to clear during programming Pressoncetostopoperationofovenduringcooking press twice to cancel cooking programme e INSTANT COOK START PAD Pressoncetocookfor1minuteat100 orincrease by 1 minute multiples each ti...

Page 6: ...CT COOKING NOCOOKING 1st latch switches COM NO Closed Open 2nd latch switch COM NO Closed Open Monitor switch COM NC Open Closed Stop switch COM NO Closed Open The circuits to the power transformer fan motor and turntable motor are cut off when the 1st latch switch 2nd latch switch and stop switch are made open The oven lamp remains on even if the oven door is opened after the cooking cycle has be...

Page 7: ...e short circuited this fuse blows to prevent an electric shock or fire hazard TEMPERATURE FUSE 150 C MG This fuse protects the magnetron against overheating If the temperature goes up higher than 150 C because the fan motor is interrupted the air inlet duct is blocked or the ventilation openings are obstructed the fuse blows and cuts off the power supplying to the power transformer The defective f...

Page 8: ...ry out 3D checks and reconnect the leads to the primary of the power transformer REMEMBER TO CHECK 4R 1 Reconnectallleadsremovedfromcomponentsduring 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 oven turntable clo...

Page 9: ...GH Oven does not seems to be operating properly when ME DIUM HIGH MEDIUM ME DIUM LOW or LOW is set Oven operates properly at HIGH and then the STOP CLEAR pad is touched the oven stops Oven goes into cook cycle but shuts down before end of cooking cycle OFF CONDITION PROBLEM CONDITION POSSIBLE CAUSE AND DEFECTIVE PARTS TEST PROCEDURE ON CONDITION CK Check RE Replace A B C CK D E E E E F G G G H H I...

Page 10: ...x t 4 187 V x T P W 4 187 x V x T t Our condition for water load is as follows Room temperature around 20 C PowersupplyVoltage Ratedvoltage Water load 1000 g Initial temperature 10 2 C Heating time 60 sec P 70 x T Measuring condition 1 Container The water container must be a cylindrical borosilicate glass vessel having a maximum material thickness of 3 mm and an outside diameter of approximately 1...

Page 11: ...luding the magnetron filament CARRY OUT 3D CHECKS Disconnect the leads to the primary winding of the power transformer Disconnect the filament and secondary winding connections from the rest of the HV circuitry Using an ohmmeter set on a low range it is possible to check the continuity of all three windings The following readings should be obtained a Primary winding approx 1 95 Ω b Secondary windi...

Page 12: ...witch to be tested and using an ohmmeter check between the terminals as described in the following table Table Terminal Connection of Switch Plunger Operation COM to NO COM to NC Released O C 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 F MONITOR RESISTOR TEST If incorrect readings are obtained make the necessary ...

Page 13: ...ounds 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 with the correct value replacement J TOUCH CONTROL PANEL ASSEMBLY TEST The touch control panel consists of circuits including semiconductors such as LSI ICs etc Therefore unlike conventional microwave ovens proper maintenance cannot be perfor...

Page 14: ... does not respond the above method may be used after clearing the control unit to determine if the control unit or tact switch is at fault K TACT SWITCH TEST SW1 10 SW2 1 SW3 10 SW4 SW6 SW7 SW5 MIN MIN SEC AUTOCOOK STOP CLEAR START INSTANTCOOK SERVES POWERLEVEL L RELAY TEST CARRY OUT 3D CHECKS Remove the outer case and check voltage between Pin Nos 3 and 5 of the 3 pin connector A on the control u...

Page 15: ...ace the defective parts CARRY OUT 4R CHECKS STEPS OCCURANCE CAUSE OR CORRECTION 1 The rated voltage is not applied to POWER terminal of CPU connector CN A Check supply voltage and oven main unit 2 The rated voltage is applied to primary side of power transformer Power transformer or secondary circuit defective Check and repair 3 Only pattern at a is broken Insert jumper wire J1 and solder 4 Patter...

Page 16: ...sary in the control unit Symbol Voltage Application VC 5V LSI IC1 4 Synchronizing Signal Circuit The power source synchronizing signal is available in order to compose a basic standard time in the clock circuit It accompanies a very small error because it works on commercial frequency 5 ACL Circuit A circuit to generate a signals which resets the LSI to the initial state when power is supplied 6 B...

Page 17: ...nal not used 7 10 R40 R43 OUT Digit selection signal Refer to the touch control panel circuit about the relation between signals and digits Normally one pulse is output in every synchronized signal period and input to the light emitting diode 11 13 R50 R52 OUT Segment data signal Refer to the touch control panel circuit for the relationship between signals and indicators Normally one pulse is outp...

Page 18: ...ponding signal will be input into R82 23 R83 IN Signal coming from touch tact switch When either one of resistor R91 line switches on switch matrix is touched a corresponding signal will be input into R83 24 R90 OUT Terminal not used 25 SO OUT Signal to sound buzzer A key touch sound 0 12 sec B Completion sound 2 4 sec 26 SCK OUT Connected to GND Pull up through resistor R2 27 KEO IN Input signal ...

Page 19: ...nel while keeping it connected to the oven approx 1M ohm B On some models the power supply cord between the touch control panel and the oven proper is 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 doo...

Page 20: ...ck about 3cm to free it from retaining clips on the cavity face plate 5 Lift the entire case from the unit 6 Discharge the H V capacitor before carrying out any further work 7 Do not operate the oven with the outer case removed N B Step 1 2 and 7 form the basis of the 3D checks CAUTION DISCHARGE HIGH VOLTAGE CAPACITOR BEFORETOUCHINGANYOVENCOMPONENT OR WIRING HIGH VOLTAGE COMPONENTS REMOVAL HIGH VO...

Page 21: ...e air guide 9 Releasethesnapbandofthemainwireharnessfromthe light mount plate 10 Release the filament lead of the power transformer and the H V wire A from the fan duct 11 Release the fan motor assembly from the oven cavity 12 Remove the one 1 screw from the thermal cut out angle 13 Removethefanbladefromthefanmotorshaftaccording the following procedure 1 Hold the edge of the rotor of the fan motor...

Page 22: ...er of bracket Terminal Push Pull down 1 2 Lever Positive lock connector Removal 1 Disconnect the oven from the power supply 2 Remove the turntable and roller stay from the oven cavity 3 Turn the oven over 4 Cutthefour 4 bridgesholdingtheturntablemotorcover to the bottom plate L with the cutting pliers as shown in Figure C 3 a CAUTION DO NOT DROP THE TURNTABLE MOTOR COVER INTO THE OVEN AFTER CUTTIN...

Page 23: ...ure C 4 5 Re installtheturntablemotorwiththeO ringandwasher to the oven cavity with the single 1 screw O ring Roots of turntable motor shaft Turntable motor O ring Apply the grease hear Washer Washer Figure C 4 Washer and O ring Installation and Grease Applying POWER SUPPLY CORD REPLACEMENT Removal 1 CARRY OUT 3D CHECKS 2 Disconnect the brown wire of the power supply cord from the fuse holder 3 Cu...

Page 24: ...onitor switch operation If those switches have not activated with the door closed two 2 screws holding latch hook to oven cavity front flange and adjust the latch hook position After adjustment make sure of following 1 In and out play of door remains less than 0 5 mm when latched position First check latch hook position pushing and pulling the door toward the oven face The results play of the door...

Page 25: ... 5mm or flat type screw driver to the gap between the choke cover and door panel as shown figure to free the engaging part 2 Lift up the choke cover now cover is free IRON PLATE Figure C 8 Choke Cover Removal DOOR PARTS REMOVAL Remove the door assembly referring to from item 1 through item 4 of DOOR REPLACEMENT 1 Place the door assembly on a soft cloth with facing up 2 Remove the choke cover refer...

Page 26: ...rowave 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 center 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...

Page 27: ...E 150 C OVEN 2ND LATCH SWITCH B1 B2 A5 A3 EARTH BLU 18 BRN 18 OL FM TTM NO RY 1 G Y 18 COM FUSE M6 3A A1 THERMAL CUT OUT 95 C RY 2 1ST LATCH SWITCH MONITOR RESISTOR 0 8 20W LIVE NEUTRAL TEMP FUSE 150 C MG Figure O 1 Oven Schematic OFF Condition POWER TRANSFORMER MAGNETRON H V RECTIFIER CAPACITOR 0 94µ AC2000V TURNTABLE MOTOR FAN MOTOR OVEN LAMP STOP SWITCH MONITOR SWITCH CONTROL UNIT TEMP FUSE 150...

Page 28: ...OR FAN MOTOR GRY BLK RED OVEN LAMP GRY STOP SWITCH MONITOR RESISTOR R E D R E D TEMP FUSE 150 C MG W H T G R Y ORG GRN RED 2 1 BLK BLK RED GRN GRN TOUCH CONTROL PANEL CN B RY2 COM CN A NO 2 1 T1 1 5 RY2 RY2 RED CN A CN B THERMAL CUT OUT 95 C RED GRY ORG ORG GRY RED POWER SUPPLY CORD OVEN CAVITY BACK PLATE SCREW GREEN YELLOW WIRE WHT NO COM NC COM NO COM COM NO ORG 1 2 4 BLK 5 GRY 3 R E D W H T WHT...

Page 29: ...14 5 1 10 15 20 25 28 VDD RESET KE0 SCK S0 R90 R83 R82 R81 INT2 R63 R62 R61 R60 R53 XOUT XIN R70 R71 R72 R40 R41 R42 R43 R50 R51 R52 VSS 13 14 13 14 a b c d e f g h 11 10 8 6 5 12 7 9 16 15 3 2 1 18 17 4 R77 R76 R78 R75 R74 R73 R72 R71 D93 D92 D91 SWITCH UNIT MAIN UNIT 150 x 8 LED71 LED72 ANODE C SW1 10 MIN SW2 1 MIN SW3 10 SEC SW4 NOTE IF NOT SPECIFIED 1 4W 5 IF NOT SPECIFIED 1SS270A IF NOT SPECI...

Page 30: ... D93 SW1 R91 R93 R92 R2 SW2 SW3 D92 Q74 B E Q73 B E 1 14 15 28 IC1 R72 CF1 R10 C10 R73 R71 SW4 E B Q10 ZD10 C4 B E B E Q71 Q72 SW6 SW7 SW5 B E Q40 C20 C3 C50 R81 C80 R20 C1 C2 Q1 D81 RY1 R51 R50 D50 D51 B Q80 B E E Q82 SP40 R40 F1 J2 D1 D2 D3 VRS1 CN A J1 E B Q3 T1 RY2 F OL TTM FAN M POWER 1 5 ZD3 R6 J3 B E Q81 R80 C5 C6 D82 Q20 B E C81 DOOR SW 2 1 CN B ...

Page 31: ...r 0 1uF 50V 1 AB C3 VCEAB31CW476M Capacitor 47uF 16V 1 AA C4 VCKYD11CY103N Capacitor 0 01uF 16V 1 AH C5 6 VCEAB31VW107M Capacitor 100uF 35V 2 AB C10 VCKYD11CY103N Capacitor 0 01uF 16V 1 AH C20 VCTYF31HF103Z Capacitor 0 01uF 50V 1 AB C50 VCKYD11CY103N Capacitor 0 01uF 16V 1 AH C80 VCEAB31HW104M Capacitor 0 1uF 50V 1 AM C81 VCEAB31VW106M Capacitor 10uF 35V 1 AB CF1 RCRS A012DRE0 Ceramic resonator CS...

Page 32: ...COVPA276WRE0 Waveguide cover 1 AL 4 17 PCOVPA277WRF0 HVC cover 1 AL 4 18 PCUSUA193WRP0 Cushion 1 AB 4 19 PCUSUA235WRP0 Exhaust Cushion 1 AF 4 20 PCUSUA376WRP0 Cushion 2 AG 4 21 PFILWA041WRE0 Lamp filter 1 AF 4 22 PPACGA097WRE0 O Ring 1 AG 4 23 LANG A044WRW0 Air guide 1 AL 4 24 PCUSGA208WRP0 Cushion 1 AC 4 25 PCUSGA389WRP0 Cushion 1 AG 4 26 LX WZA028WRE0 Washer 1 AB 4 27 LANGTA299WRW0 Cord angle 1 ...

Page 33: ...rew 4mm X 8mm 2 AA 7 3 XFPSD30P06000 Screw 3mm X 6mm 2 AA 7 4 XVPSD40P20000 Screw 4mm X 20mm 1 AA 7 5 XOTSD40P12000 Screw 4mm X 12mm 9 AA 7 6 XHTSD40P08RV0 Screw 4mm X 8mm 2 AA 7 7 LX CZ0052WRE0 Special screw 2 AA 7 8 LX EZA045WRE0 Special screw 5 AA 7 9 XFPSD40P08K00 Screw 4mm X 8mm 1 AA 7 10 XFPSD40P08000 Screw 4mm X 8mm 6 AA 7 11 XOTSD40P12RV0 Screw 4mm X 12mm 11 AA 7 12 XOTSE40P08000 Screw 4mm...

Page 34: ... 1 7 6 7 8 4 3 4 19 7 12 1 8 7 5 7 5 7 17 7 10 4 16 4 1 4 22 7 9 1 18 7 3 7 5 7 6 4 4 7 4 1 7 4 5 1 15 7 3 4 17 7 5 7 5 4 13 7 2 1 5 4 8 4 12 2 2 4 9 7 11 2 4 7 5 7 8 7 11 7 5 2 4 7 11 2 3 4 11 7 11 4 2 4 18 6 4 7 6 7 5 4 10 7 17 1 16 1 14 6 6 4 6 1 11 1 17 1 12 4 26 4 15 1 1 4 25 4 24 7 15 7 7 7 1 7 10 1 13 6 10 4 29 7 12 4 27 4 28 7 18 1 6 1 4 7 16 1 20 6 5 6 11 6 12 ...

Page 35: ...B C D E F G H A B C D E F G H CONTROL PANEL PARTS 3 2 3 3 3 4 3 6 3 5 x 10 3 1 3 7 3 2 1 5 4 5 5 1 5 2 5 3 5 7 5 5 5 6 7 13 7 13 MISCELLANEOUS DOOR PARTS Max 1 0 6 4 Actual wire harness may be different from illustration 6 2 80 5 6 9 6 3 ...

Page 36: ...PERATION MANUALS ROLLER STAY INTO THE OVEN CAVITY DOOR PROTECTION SHEET SPADPA204WRE0 MICROWAVE OVEN PACKING PAD KIT CPADBA165WRK0 POLYETHYLENE BAG SSAKHA014WRE0 Not replaceable items PACKING CASE SPAKCC686WRE0 TRAY PAD ASSEMBLY SPADFA370WRE0 PAD HOLDER SPADFA371WRE0 COOK BOOK THAI EARTH CAUTION WARRANTY CARD COOKING WEAR PSRA A026WRP0 MENU LABEL ...

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