Sharp Carousel R-930AK Service Manual Download Page 12

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R-930AK
R-930AW

SCHEMATIC

1. DOOR CLOSED.
2. CONVECTION PAD TOUCHED.
3. DESIRED TEMP. TOUCHED.
4. COOKING TIME PROGRAMMED.
5. “START” PAD TOUCHED.

SCHEMATIC

DOOR CLOSED.

MIX COOKING PAD TOUCHED.

COOKING TIME PROGRAMMED.

“START” PAD TOUCHED.

RY2 AND RY3 WILL ALTERNATELY CLOSE.
DURING COOK CYCLE.

Figure O-4. Oven Schematic-Convection Cooking Condition

Figure O-3. Oven Schematic-Automatic Mix Cooking Condition

CONV.
THERMAL
CUT-OUT

MONITOR SWITCH

OVEN LAMP

FAN MOTOR

A-5

A-3

A-1

E-6

CONTROL UNIT

DAMPER
SWITCH

THER-
MISTOR

DOOR
SENSING
SWITCH

AH SENSOR

DAMPER MOTOR

CONVECTION MOTOR

TURNTABLE MOTOR

HEATIMG ELEMENT

MAGNETRON

POWER
TRANSFORMER

H.V. RECTIFIER

CAPACITOR
0.94

RY4

RY5

RY6

RY1

SECONDARY
INTERLOCK
SWITCH

OUTER
CASE
SWITCH

120V
60Hz

TTM

COM.
(RY1)

E-5

E-4

E-3

E-2

E-1

F-3

F-2

F-1

RY3

RY2
PRIMARY
INTERLOCK
RERAY

N.O.
(RY1)

COM.
(RY3)

COM.
(RY2)

N.O.
(RY2)

N.O.
(RY3)

A-9

A-7

MAGNETRON
TEMPERATURE
FUSE

FUSE

RY2

CONV.
THERMAL
CUT-OUT

MONITOR SWITCH

OVEN LAMP

FAN MOTOR

A-5

A-3

A-1

E-6

CONTROL UNIT

DAMPER
SWITCH

THER-
MISTOR

DOOR
SENSING
SWITCH

AH SENSOR

DAMPER MOTOR

CONVECTION MOTOR

TURNTABLE MOTOR

HEATIMG ELEMENT

MAGNETRON

POWER
TRANSFORMER

H.V. RECTIFIER

CAPACITOR
0.94

RY4

RY5

RY6

RY1

SECONDARY
INTERLOCK
SWITCH

OUTER
CASE
SWITCH

120V
60Hz

TTM

COM.
(RY1)

E-5

E-4

E-3

E-2

E-1

F-3

F-2

F-1

RY3

RY2
PRIMARY
INTERLOCK
RERAY

N.O.
(RY1)

COM.
(RY3)

COM.
(RY2)

N.O.
(RY2)

N.O.
(RY3)

A-9

A-7

MAGNETRON
TEMPERATURE
FUSE

FUSE

RY2

Summary of Contents for Carousel R-930AK

Page 1: ... LIST 36 PACKING AND ACCESSORIES 39 R 930AK R 930AW S6710R930APW MODELS R 930AW SERVICE MANUAL SHARP ELECTRONICS CORPORATION Service Headquarters Sharp Plaza Mahwah New Jersey 07430 2135 MIX CONV DEFROST SENSOR COOK LBS OZ KG HELP Interactive Convection CUSTOM HELP MINUTE PLUS COMPU DEFROST SENSOR COOKT COMPU BROIL COMPU ROAST COMPU BAKE PREHEAT CONVEC BROIL SLOW COOK KITCHEN TIMER POWER LEVEL STO...

Page 2: ...of hinges and latches 5 evidence of dropping or abuse c Before turning on microwave power for any service test or inspection within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity and connections d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission s...

Page 3: ...mediately 1 800 237 4277 If the unit operates with the door open service person should 1 tell the user not to operate the oven and 2 contact SHARP ELECTRONICS CORPORATION and Food and Drug Administration s Center for Devices and Radiological Health immediately ServicepersonnelshouldinformSHARPELECTRONICSCORPORATIONofanycertifiedunitfound with emissions in excess of 4mW cm2 The owner of the unit sh...

Page 4: ...he center of the oven cavity The water container shall be a low form of 600 ml 20 oz beaker with an inside diameter of approx 8 5 cm 3 1 2 in and made of an electrically nonconductive material such as glass or plastic Theplacingofthisstandardloadintheovenisimportantnotonlytoprotecttheoven butalsotoinsurethatanyleakage is measured accurately 4 Set the cooking control on Full Power Cooking Mode 5 Cl...

Page 5: ...ly study the entire text of this manual so that they will be qualified to render satisfactory customer service Check the interlock switches and the door seal carefully Special attention should be given to avoid electrical shock and microwave radiation hazard SHARP ELECTRONICS CORPORATION SHARP PLAZA MAHWAH NEW JERSEY 07430 2135 PRODUCT DESCRIPTION GENERAL INFORMATION OPERATION TROUBLESHOOTING GUID...

Page 6: ...ng CONVECTION 100 450 F Temp control LOW MIX BAKE 350 F with 10 microwave power HIGH MIX ROAST 300 F with 30 microwave power SLOW COOK 300 F for 4 hours no preheat BROIL 450 F preheat CUSTOM HELP pad SENSOR REHEAT pad MINUTE PLUS pad POPCORN pad COMPU DEFROST pad SENSOR COOK pad COMPU BROIL pad COMPU ROAST pad COMPU BAKE pad REHEAT pad CONVEC pad BROIL pad SLOW COOK pad HIGH MIX ROAST pad LOW MIX ...

Page 7: ... FROM THIS PLUG OVEN DIAGRAM 1 Ventilation openings Rear side 2 Oven door with see through window 3 Oven lamp 4 Turntable support 5 Removable turntable The turntable will rotate clockwise or counterclockwise 6 Safety door latches The oven will not operate unless the door is securely closed TOUCH CONTROL PANEL MIX CONV DEFROST SENSOR COOK LBS OZ KG HELP 7 Wave guide cover 8 Door open button 9 Auto ...

Page 8: ... of microwave energy is stopped The oven will revert to the OFF condition 6 When the door is opened during a cook cycle monitor switch door sensing switch the primary interlock relay and the secondary interlock switch are activated with the following results The circuits to the turntable motor the cooling fan motor and the high voltage components are de energized the oven lamp remains on and the d...

Page 9: ...the fan motor Relay RY5 will however open as soon as the convection cycle has ended turning off the convection fan motor 5 At the end of the convection cook cycle shut off relay RY4 is energized turning on the damper motor The damper is returned to the open position closing the damper switch contacts which send a signal to the control unit de energizing shut off relay RY4 AUTOMATIC MIX COOKING CON...

Page 10: ...oltage is applied to the heating element 4 Now the oven is in the convection cooking mode 5 Whentheoventemperaturehasreachedtheprogrammed convection temperature the oven goes into the programmed cooking mode 6 At the end of the COMPU BROIL ROAST BAKE cycle the damper is returned to the open position and the oven will go to the off condition The cooling fan will remain on until the oven has cooled ...

Page 11: ...R MOTOR CONVECTION MOTOR TURNTABLE MOTOR HEATIMG ELEMENT MAGNETRON POWER TRANSFORMER H V RECTIFIER CAPACITOR 0 94µ RY4 RY5 RY6 RY1 SECONDARY INTERLOCK SWITCH OUTER CASE SWITCH OUTER CASE SWITCH 120V 60Hz TTM FM COM RY1 E 5 E 4 E 3 E 2 E 1 F 3 F 2 F 1 RY3 RY2 PRIMARY INTERLOCK RERAY N O RY1 COM RY3 COM RY2 N O RY2 N O RY3 A 9 A 7 CM DM OL MAGNETRON TEMPERATURE FUSE FUSE RY2 CONV THERMAL CUT OUT MON...

Page 12: ...ANSFORMER H V RECTIFIER CAPACITOR 0 94µ RY4 RY5 RY6 RY1 SECONDARY INTERLOCK SWITCH OUTER CASE SWITCH OUTER CASE SWITCH 120V 60Hz TTM FM COM RY1 E 5 E 4 E 3 E 2 E 1 F 3 F 2 F 1 RY3 RY2 PRIMARY INTERLOCK RERAY N O RY1 COM RY3 COM RY2 N O RY2 N O RY3 A 9 A 7 CM DM OL MAGNETRON TEMPERATURE FUSE FUSE RY2 CONV THERMAL CUT OUT MONITOR SWITCH OVEN LAMP FAN MOTOR A 5 A 3 A 1 E 6 CONTROL UNIT DAMPER SWITCH ...

Page 13: ...02 F 150 C causing the oven to shut down When the thermal cut out has cooled the thermal cut out closes at 266 F 130 C DOOR SENSING AND SECONDARY INTERLOCK SWITCHES The door sensing switch in the primary interlock system is mounted in the upper position on the latch hook the secondary interlock switch is mounted in the lower position on the latch hook They are activated by the latch heads on the d...

Page 14: ...t is energized again In this way the inside of the oven cavity is maintained at approximately the selected temperature When the convection time reaches 0 the heating element is de energized and the convection fan stops operating and the oven shuts off DAMPER OPEN CLOSE MECHANISM Usually the damper is in the open position except during convection cooking Damper position is set automatically by damp...

Page 15: ...le Display does not operate properly when STOP CLEAR pad is touched The time of day should appear on the display with beep sound Oven lamp does not light with door opened Oven lamp does not light in cook cycle It light when door is opened Cooking cycle runs 1 minute then shuts down Oven lamp light but turntable motor does not operate Turntable motor operates normally but cooling fan motor does not...

Page 16: ...e is recorded 4 Subtract the cold water temperature from the hot water temperature The normal result should be 22 to 43 F 12 2 to 23 8 C rise in temperature If the water temperatures are accurately measured and tested for the required time period the test results will indicate if the magnetron tube has low power output low rise in water temperature which would extend cooking time or high power out...

Page 17: ...ry interlock relay are operating properly according to the above Test Procedures Disconnect the wire lead from the monitor switch NC terminal Check the monitor switch operation by using the ohmmeter as follows When the door is open the meter should indicate a closed circuit When the monitor switch actuator is pushed by a screw driver through the lower latch hole on the front plate of the oven cavi...

Page 18: ...r the motor operates until the damper is opened and the damper switch closes Then the damper motor stops operation If the damper motor does not operate check for A C voltage with a voltmeter at the motor 1 Disconnect the power cord from the wall receptacle 2 Disconnectthewireleadsofmotorandconnectthemeterleadstothewireleadsofmainwireharness 3 Re connect the power cord into the wall receptacle If 1...

Page 19: ...ching the pads a certain group of pads do not produce a signal b When touching the pads no pads produce a signal 2 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 d The corresponding segments of all digits do not light up or they continue to light up e Wrong figure appears f A certa...

Page 20: ... RELAY SYMBOL OPERATIONAL VOLTAGE CONNECTED COMPONENTS RY1 Approx 19 0V D C Oven lamp Turntable motor RY2 COOK Approx 18 0V D C Power transformer RY3 HEATER Approx 18 0V D C Heating element RY4 Approx 19 0V D C Damper motor RY5 Approx 19 0V D C Convection motor RY6 Approx 19 0V D C Cooling fan motor TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST Ifthecontrolunitrespondsbyclearingwithabeepthekeyun...

Page 21: ...ing sensor cook operation The cabinet should be installed and screws tightened 1 Fill approximately 200 milliliters 7 2 oz of tap water in a 1000 milliliter measuring cup 2 Place the container on the center of tray in the oven cavity 3 Close the door 4 Touch SENSOR COOK pad and number pad 1 Now the oven is in the sensor cooking condition and BAKED POTATO will appear in the display 5 Touch Start pa...

Page 22: ...se the door 6 4 Touch SENSOR COOK pad and number 1 pad 6 5 Touch Start pad The control panel is in automatic Sensor operation 6 6 The display will start to count down the remaining cooking time and the oven will turn off automatically after the water is boiling bubbling If new sensor dose not operate properly the problem is with the control unit CHECKING CONTROL UNIT 1 Disconnect oven from power s...

Page 23: ...incorporates a very small error because it works on commercial frequency TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 4 ACL Circuit A circuit to generate a signals which resetting the LSI to the initial state when power is applied 5 Buzzer Circuit The buzzer is responds to signals from the LSI to emit noticingsounds keytouchsoundandcompletionsound 6 Temperature Measurement Circuit O...

Page 24: ...AN0 IN Temperature measurement input OVEN THERMISTOR By inputting DC voltage corresponding to the temperature detected by the thermistor this input is converted into temperature by the A D converter built into the LSI 13 P55 OUT Digit selection signal The relationship between digit signal and digit are as follows Digit signal Digit P03 1st P02 2nd P01 3rd P00 4th P37 5th P36 6th P35 7th P55 8th No...

Page 25: ...IN Signal to synchronize LSI with commercial power source freqency This is the basic timing for all real time processing of LSI 26 P40 IN Connected to GND 27 RST IN Auto clear terminal Signal is input to reset the LSI to the initial state when power is applied Temporarily set to L level the moment power is applied at this time the LSI is reset Thereafter set at H level 28 29 XCIN XCOUT OUT Termina...

Page 26: ...P23 Key strobe signal Signal applied to touch key section A pulse signal is input to P24 P27 terminal while one of G 11 line keys on key matrix is touched 43 P15 OUT Segment data signal Signal similar to P23 Key strobe signal Signal applied to touch key section A pulse signal is input to P24 P27 terminal while one of G 10 line keys on key matrix is touched 44 P14 OUT Segment data signal Signal sim...

Page 27: ...ccurs ABSOLUTE HUMIDITY SENSOR CIRCUIT C S R3 R1 R2 Operational amplifier Output voltage S Thermistor open vessel C Thermistor closed vessel 2 Absolute humidity g m Output voltage Absolute humidity vs output voltage characterist than the detector circuit starts to function and the LSI observes the initial voltage available at its AN6 terminal With this voltage given the switches SW1 to SW5 in the ...

Page 28: ...r related ones 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 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 yo...

Page 29: ...th the one 1 screw 7 Re install the outer case cabinet and check that the oven is operating properly Switch holder Outer case switch Outer case switch Actuator Figure C 1 Outer case switches replacement To prevent an electric shock take the following man ners 1 Before wiring 1 Disconnect the power supply 2 Open the door and wedge the door open 3 Discharge the high voltage capacitor and wait for 60...

Page 30: ...and MAGNETRON REMOVAL 1 Disconnect oven from power supply and remove outer case 2 Dischargethehighvoltagecapacitor Disconnectfilament lead of transformer from magnetron Disconnect high voltage wire lead from magnetron 3 Carefully remove four 4 mounting screws hold the magnetron to waveguide when removing the screws holding the magnetron to prevent it from falling 4 Remove the magnetron from the un...

Page 31: ...ds from thermistor Remove two 2 screws from thremistor 4 Disconnect wire leads from convection motor thermal cut out and heater element 5 Remove nine 9 screws holding heater duct to the oven cavity 6 Remove two 2 screws holding heater duct to base cabinet Releasetwo 2 snapbandsholdingwireharness to the thermal cover convection 7 The heater unit is now free HEATING ELEMENT REMOVAL 1 Remove two 2 sc...

Page 32: ... the edge of the rotor of the fan motor by using a pair of grove joint 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 easily shaven by pliers and metal pieces may be produced 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 t...

Page 33: ...y and remove outer case 2 Discharge high voltage capacitor 3 Remove the control panel assembly refer to Control Panel Removal 4 Disconnect wire leads from each of the switches and fuse holder 5 Remove two 2 screws holding latch hook to oven flange 6 Remove latch hook assembly from oven flange 7 Push outward on the one 1 stopper tabs holding each of switches place 8 Switch is now free At this time ...

Page 34: ...laden air from the oven cavity Figure C 5 Door Replacement and adjustment RE INSTALL RE INSTALL LOWER OVEN HINGE UPPER OVEN HINGE DOOR ASSEMBLY LATCH HEADS Remove door assembly refer to Door Replacement Replacement of door components are as follows 1 Place door assembly on a soft cloth with latches facing up Note As the engaging part of choke cover and door panel areprovidedatseveralplaces donotfo...

Page 35: ...tight NOTE The neutral WHT wire must be connected to the terminal with N mark on the power supply cord OVEN LAMP SOCKET N O PNK N H G R Y R E D THERMISTOR 1 2 RED RED RED RED MONITOR FUSE FUSE HOLDER RED MAGNETRON RED HIGH VOLTAGE COMPONENTS HIGH VOLTAGE CAPACITOR POWER TRANSFORMER P P L BLK WHT WHT GRY ORG RY6 RY4 RY5 CN G RY1 COM RY1 N O BRN RY2 COM ORG ORG RY2 N O RY3 COM RED RED RY3 N O BRN BR...

Page 36: ...N THERMISTOR AH SENSOR OVEN LAMP TURNTABLE MOTOR RY6 RY2 D30 RY3 RY1 R31 4 7k R51 4 7k R62 75kF CF1 4 19MHz C70 330pF x 4 A B C C30 C50 C60 D3 D4 D7 Q1 2SB1238 Q4 DTA123ES Q3 KRA101M Q90 KRA101M Q40 KRA101M Q21 KRA101M Q22 KRA101M Q24 KRA101M Q25 KRA101M Q23 KRA101M Q26 KRC243M Q20 KRA101M R10 18 1w CONTROL UNIT C10 0 1µ 50v VP VP F F 8G 31 32 1 2 29 MIX CONV DEFROST SENSOR COOK LBS OZ KG HELP R90...

Page 37: ...1 Q20 ZD3 ZD4 8 10 11 12 J7 J2 J4 J6 J5 J3 C10 C81 C80 C45 R47 C46 C47 R48 R49 CN D CN G CN G CN F CN E ONLY 9X58PJ C7 C9 C5 C6 C21 C4 C2 C22 C1 R3 C3 C60 C50 C30 R45 R91 R92 R93 R64 R80 R81 R73 D70 D71 D72 D73 D74 D75 D76 D77 R72 R71 R70 R79 R78 R77 R76 R75 R74 R86 J8 R90 R7 R100 R40 DAMP SW DOOR SW OVEN TEMP R50 R51 R31 R30 POWER TRANS POWER OL TTM R62 C20 26 CN A ZD2 R2 D3 D4 D1 D2 Q1 Q23 Q26 Q...

Page 38: ...X 2 3 1 GCOVHA156WRP0 Turntable motor cover 1 AB 2 3 2 XHTSD40P08RV0 Screw 4mm x 8mm 1 AA 2 4 GLEGPA019WRE0 Foot 4 AD 2 5 GCABDA087WRW0 Rear cabinet 1 AS 2 6 LHLDKA009WRF0 Cord holder 1 AG 2 7 LBNDKA036WRP0 Capacitor holder 1 AG 2 8 FHNG A092WRM0 Oven hinge Lower 1 AF 2 9 PHOK A043WRF0 Latch hook 1 AM 2 10 MLEVPA122WRF0 Switch lever 1 AD CONTROL PANEL PARTS 3 1 CPWBFA748WRK0 Control unit 1 BU 3 1A...

Page 39: ...2 1 Zener diode HZ4A2 1 AA 3 2 DPNLCB438WRK0 Control panel frame with key unit R 930AK 1 BE 3 2 DPNLCB439WRK0 Control panel frame with key unit R 930AW 1 BE 3 2 1 FUNTKA815WRE0 Key unit R 930AK 1 BA 3 2 1 FUNTKA816WRE0 Key unit R 930AW 1 BA 3 2 2 JBTN B059WRF0 Open button R 930AK 1 AE 3 2 2 JBTN B060WRF0 Open button R 930AW 1 AE 3 2 3 MSPRCA050WRE0 Open button spring 1 AB 3 3 LANGTA340WRW0 Control...

Page 40: ...3mm x 8mm 16 AA MISCELLANEOUS 6 1 FAMI A088WRM0 Low rack Broiling trivet 1 AW 6 2 FAMI A087WRM0 High rack Baking rack 1 AW 6 3 TCADCA522WRR0 Cook book 1 BA 6 4 FW VZB342WRE0 Thermistor harness 1 AN 6 5 FW VZB595WRE0 Main wire harness 1 BA 6 6 QW QZA198WRE0 High voltage wire B 1 AN 6 7 QW VZA108WRE0 Grounding wire Cooling fan motor 1 AF 6 8 TSPCNC464WRR0 Name plate R 930AK 1 AE 6 8 TSPCNC467WRR0 Na...

Page 41: ...ART NO 2 REF NO 4 DESCRIPTION Order Parts from the authrized SHARP parts Distributor for your area Defective parts required return should be returned as indicated in the Service Policy PACKING AND ACCESSORIES 4 3 TURNTABLE TRAY 6 11 OPERATION MANUAL 6 3 COOK BOOK 4 2 TURNTABLE SUPPORT TRAY PACKING FOAM SPADPA198WRE0 CABINET COVER R 930AK SPADPA507WRE0 DOOR PROTECTION SHEET SPADPA178WRE0 MICROWAVE ...

Page 42: ...1 1 13 4 30 4 7 7 21 4 29 4 1 4 22 4 23 7 11 7 13 7 25 4 3 4 2 1 7 2 7 7 19 1 18 7 16 7 1 1 2 1 4 4 21 1 6 4 26 4 27 4 18 4 20 7 9 7 16 4 19 1 6 1 9 7 17 4 17 7 23 7 6 1 16 4 40 4 14 7 24 2 4 2 3 2 2 3 1 7 22 4 28 7 7 1 21 4 16 4 24 4 24 7 18 4 38 4 6 7 15 4 38 4 39 x 6 7 2 6 10 7 2 4 34 4 25 4 13 x3 7 22 6 7 6 4 6 7 7 16 1 20 2 3 x4 1 17 7 22 7 16 x3 4 5 7 20 1 1 A x4 7 1 2 2 2 5 7 24 7 24 7 5 x4...

Page 43: ...A B C D E F G H DOOR PARTS CONTROL PANEL PARTS MISCELLANEOUS 5 3 5 10 5 1 5 Actual wire harness may be different than illustration 6 4 6 1 6 5 6 6 6 7 6 2 5 10 5 10 5 9 5 5 5 4 5 7 5 8 5 6 5 2 5 5 x 3 x 2 7 24 7 24 3 5 3 4 3 7 3 3 3 2 3 2 1 3 2 3 3 2 2 3 6 3 1 ...

Page 44: ...R 930AK R 930AW 42 97 SHARP CORP 6K2 770E Printed in U S A ...

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