Sharp Carousel R-1200 Service Manual Download Page 9

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R-1200
R-1201

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED.
2. COOKING TIME PROGRAMMED.
3. VARIABLE COOKING CONTROL "HIGH".
4. "START" BUTTON PRESSED.

Figure O-2. Oven Schematic-Cooking Condition

Figure O-1. Oven Schematic-Off Condition

SCHEMATIC

NOTE: CONDITION OF OVEN
1.

DOOR CLOSED.

CLOCK APPEARS ON DISPLAY.

NOTE: " " indicates components with potential above 250V.

MAGNETRON
TEMPERATURE FUSE

FUSE
20A

TURNTABLE

MOTOR

FAN

MOTOR

MAGNETRON

OVEN LAMP

MONITOR

SWITCH

BLK

WHT

POWER
TRANSFORMER

HIGH VOLTAGE
CAPACITOR
1.0

F/ AC2300V

HIGH VOLTAGE
RECTIFIER

COM.

N.O.

COM.

CONTROL UNIT

GND

GRN

N.O.

DOOR
SENSING
SWITCH

PRIMARY
INTERLOCK
SWITCH

120 V AC.
60 Hz

HOOD
LAMP

RY1

RY2

SECONDARY
INTERLOCK
RELAY

OVEN LAMP
RELAY

TTM

RY3

RY4

CAVITY
TEMPERATURE FUSE

TURNTABLE

MOTOR

FAN

MOTOR

MAGNETRON

OVEN LAMP

MONITOR

SWITCH

POWER
TRANSFORMER

HIGH VOLTAGE
RECTIFIER

COM.

N.O.

COM.

CONTROL UNIT

N.O.

DOOR
SENSING
SWITCH

PRIMARY
INTERLOCK
SWITCH

RY1

RY2

SECONDARY
INTERLOCK
RELAY

OVEN LAMP
RELAY

TTM

MAGNETRON
TEMPERATURE FUSE

FUSE
20A

BLK

WHT

HIGH VOLTAGE
CAPACITOR
1.0

F/ AC2300V

GND

GRN

120 V AC.
60 Hz

HOOD
LAMP

RY3

RY4

CAVITY
TEMPERATURE FUSE

Summary of Contents for Carousel R-1200

Page 1: ... DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY INSIDE FRONT COVER BEFORE SERVICING INSIDE FRONT COVER WARNING TO SERVICE PERSONNEL 1 MICROWAVE MEASUREMENT PROCEDURE 2 FOREWORD AND WARNING 3 PRODUCT SPECIFICATIONS 4 GENERAL INFORMATION 4 OPERATION 6 TROUBLESHOOTING GUIDE 9 TEST PROCEDURE 11 TOUCH CONTROL PANEL ASSEMBLY 18 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 23...

Page 2: ... and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner BEFORE SERVICING Before servicing an operative unit perform a microwave emission check as per the Microwa...

Page 3: ...citor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that these leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedure reconnect the power supply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Reconne...

Page 4: ...f 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 The placing of this standard load in the oven is important not only to protect the oven but also to insure that any leakage is measured accurately 4 Set the cooking control on Full Power Cookin...

Page 5: ...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 Servicing and repair work must be carried out only by trained service personnel DANGER Certaininitialpartsareintentionallynotgroundedandpresent a risk of electrical shock only during servicing Service personnel Do not contact the following parts while the appliance is energize...

Page 6: ...r P 20 approx 20 of Full Power P 10 approx 10 of Full Power P 0 No power throughout the cooking time KEEP WARM pad ACCENT LIGHT pad TASK LIGHT pad REHEAT CENTER pads COOK CENTER pads DEFROST CENTER pads Number selection pads POWER LEVEL pad TIMER CLOCK pad MINUTE PLUS pad STOP CLEAR pad STARTpad Oven Cavity Light 20W x 1 Incandescent light bulb Safety Standard UL Listed FCC Authorized DHHS Rules C...

Page 7: ...nel 9 Time display Digital display 99 minutes 99 seconds 10 Ventilation openings 11 Light Cover 12 Bottom sash 13 Removable turntable The turntable will rotate clockwise or counterclockwise Only remove for cleaning 14 Removable turntable support 15 Power supply cord 3 Pronged Plug Grounded Receptacle Box Grounding Pin 3 Pronged Receptacle 14 7 7 3 4 5 10 2 1 6 11 12 15 9 8 13 10 CONTROL PANEL NOTE...

Page 8: ...voltage components are de energized the oven lamp remains on and the digital read out displays the time still remaining in the cook cycle when the door was opened 7 Themonitorswitchiselectricallymonitoringtheoperation of the primary interlock switch and secondary interlock relay RY2 andismechanicallyassociatedwiththedoor so that it will function in the following sequence 1 When the door opens from...

Page 9: ...H VOLTAGE CAPACITOR 1 0µF AC2300V HIGH VOLTAGE RECTIFIER COM N O COM CONTROL UNIT GND GRN A1 A3 A5 N O B2 B1 DOOR SENSING SWITCH PRIMARY INTERLOCK SWITCH 120 V AC 60 Hz HOOD LAMP HL RY1 RY2 SECONDARY INTERLOCK RELAY OVEN LAMP RELAY FM OL TTM RY3 RY4 CAVITY TEMPERATURE FUSE HL TURNTABLE MOTOR FAN MOTOR MAGNETRON OVEN LAMP MONITOR SWITCH POWER TRANSFORMER HIGH VOLTAGE RECTIFIER COM N O COM CONTROL U...

Page 10: ...ty HOOD LAMP The hood lamps are mounted at the hood lamp angle on the base cover The hood lamps can be turned off and on by touching the ACCENT LIGHT pad or TASK LIGHT pad And also the brightness can be varied to high or low by touching the ACCENT LIGHT pad or TASK LIGHT pad DOOR OPEN MECHANISM The door is opened by pushing the open button on the control panel refer to the Figure D 1 Whentheopenbu...

Page 11: ...016 KiT as an assembly IMPORTANT Whenever troubleshooting is performed with the power supply cord disconnected It may in some cases be necessary to connect the power supply cord after the outer case has been removed in this event 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect the leads to the primary o...

Page 12: ...e motor operate Turntable motor does not operate Oven lamp lights and fan motor operate Oven does not go into cook cycle when START pad is touched Oven seems to be operating but little or no heat is produced in oven load Food incompletely cooked or not cooked at all at end of cook cycle Oven goes into a cook cycle but extremely uneven heating is produced in oven load food Variable cooking does not...

Page 13: ... the temperature stabilizes Record the temperature of the water 2 Place the cup of water in the oven Operate oven at POWER 10 HIGH selecting more than 60 seconds cook time Allow the water to heat for 60 seconds measuring with a stop watch second hand of a watch or the digital read out countdown 3 Remove the cup from the oven and again measure the temperature making sure to stir the thermometer or ...

Page 14: ...y the cooling fan and air guide 5 Reconnect all leads removed from components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions MAGNETRON TEMPERATURE FUSE TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 ...

Page 15: ...r the outer case is installed 8 Run the oven and check all functions F PRIMARY INTERLOCK SWITCH TEST H MONITOR SWITCH TEST G SECONDARY INTERLOCK SYSTEM TEST DOOR SENSING SWITCH 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Isolatetheswitchandconnecttheohmmetertothecommon COM andnormallyopen NO terminal of the sw...

Page 16: ...peration is indicated the switch may be defective After testing the monitor switch reconnect the wire lead to the monitor switch COM terminal and check the continuity of the monitor circuit 5 Reconnectallleadsremovedfrom components during testing 6 Reinstall the outer case cabinet 7 Reconnect the power supply cord after the outer case is installed 8 Run the oven and check all functions J TOUCH CON...

Page 17: ...ltage capacitor wait for 60 seconds 4 Reconnect all leads removed from components during testing 5 Re install the outer case cabinet 6 Reconnect the power supply cord after the outer case is installed 7 Run the oven and check all functions K KEY UNIT TEST 1 Disconnect the power supply cord 2 Open the door and block it open 3 To discharge high voltage capacitor wait for 60 seconds 4 If the display ...

Page 18: ... is good control unit is defective RELAY SYMBOL OPERATIONAL VOLTAGE CONNECTED COMPONENTS RY1 Approx 27 9V D C Oven lamp Fan motor Turntable motor RY2 COOK Approx 26 9V D C Power transformer RY3 Approx 27 9V D C Hood lamp RY4 Approx 27 9V D C Hood lamp 8 Disconnect the power supply cord 9 Open the door and block it open 10 To discharge high voltage capacitor wait for 60 seconds 11 Reconnect all lea...

Page 19: ...tected replace the defective parts 7 Reconnect all leads removed from components during testing 8 Re install the power unit to the right panel and re install the right panel to the oven 9 Reconnect the power supply cord 10 Run the oven and check all functions 2 Follow the troubleshooting guide given below if indicator does not light up after above check and repairs are finished 1 Disconnect the po...

Page 20: ...oven lamp and hood lamp 8 Indicator Circuit This circuit consists of 22 segments and 3 common electrodes using a Light Crystal Display 9 Back Light Circuit A circuit to drive the back light Light emitting diodes LD1 LD4 The touch control section consists of the following units as shown in the touch control panel circuit 1 Key Unit 2 Control Unit The Control unit consists of LSI Unit and Power Unit...

Page 21: ...2 The signals holds L level during microwave cook ing and H level while not cooking In other cooking modes variable cooking the signal turns to H level and L level in repetition according to the power level 20 P46 IN Signal coming from touch key When either G12 line on key matrix is touched a corresponding signal out of P20 P27 will be input into P46 When no key is touched the signal is held at H ...

Page 22: ...ched 38 P22 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P43 P46 terminal while one of G3 line keys on key matrix is touched 39 P21 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P43 P46 terminal while one of G2 line keys on key matrix is touched 40 P20 OUT Key strobe signal Signal applied to touch key section A pulse si...

Page 23: ...d to VC 76 COM3 OUT Terminal not used 77 COM2 OUT Common data signal COM2 Connected to LCD signal COM2 78 COM1 OUT Common data signal COM1 Connected to LCD signal COM1 79 COM0 OUT Common data signal COM0 Connected to LCD signal COM0 80 VL3 IN Power source voltage input terminal Standard voltage for LCD ...

Page 24: ...self is so short that the two can t be separated For those models check and repair all the controls sensor 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 it is possible to check and repair the ...

Page 25: ... conditions exist 1 Door does not close firmly 2 Door hinge support or latch hook is damaged 3 The door gasket or seal is damaged 4 The door is bent or warped 5 There are defective parts in the door interlock system 6 There are defective parts in the microwave generating and transmission assembly 7 There is visible damage to the oven Do not operate the oven 1 Without the RF gasket Magnetron 2 If t...

Page 26: ...y cord from the wiring harness and remove the power supply cord together with the outer case 7 Nip the cord bushing with bushing pliers and release it from the outer case cabinet 8 Remove the cord bushing and the power supply cord from the outer case cabinet 9 Now the power supply cord is free CAUTION 1 DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE 2 DISCHARGE THE HIGH VOLTAGE CAPAC...

Page 27: ...isconnect the wire leads from the fan motor 5 Disconnect the high voltage wire lead with the high voltage rectifier from the magnetron 6 Disconnect the filament lead of the transformer from the high voltage capacitor 7 Disconnect the high voltage wire A from the capacitor 8 Release the wire leads from the hole of the fan duct 9 Remove the one 1 screw holding the fan duct to the magnetron 10 Remove...

Page 28: ... high voltage capacitor wait for 60 seconds 4 Turn the lamp socket and release it from the magnetron duct 5 Screw the oven lamp off from the lamp socket 6 Now the oven lamp is free 7 Pull the wire leads from the oven lamp socket by pushing OVEN LAMP AND LAMP SOCKET REMOVAL POSITIVE LOCK CONNECTOR NO CASE TYPE REMOVAL 1 Disconnect the power supply cord and remove the oven from wall and remove outer...

Page 29: ... Adjustment procedure 1 Disconnect the power supply cord and remove the oven from wall and remove outer case Refer to procedure of RemovalofOvenfromWall and OutercaseRemoval 2 Open the door and block it open 3 To discharge the high voltage capacitor wait for 60 seconds 4 Remove the right panel assembly referring to the procedureof RIGHTPANELASSEMBLYANDPOWER UNIT REMOVAL If the door sensing switch ...

Page 30: ...ire harness should be held by three 3 tabs on the bottom sash And the marking portion on the 9 pin wire harness should be held by left tab as shown in Figure C 3 8 Insert the connector of the 9 pin wire harness into the long hole of the oven cavity front face plate And reinstall the bottom sash to the oven cavity front face plate with the two 2 screws 9 Reconnect the 9 pin wire harness to the powe...

Page 31: ...e ribbon cable of the key unit from the LSI unit DOOR DISASSEMBLY 12 Releasing the two 2 lower tabs remove the LSI unit with the LCD holder from the door frame assembly 13 Disconnect the 9 pin wire harness from the LSI unit 14 Releasing the two 2 tabs release the LCD from the LCD holder 15 Releasing the four 4 tabs remove the LCD holder from the LSI unit 16 Now the LSI unit is free NOTE For 9 pin ...

Page 32: ... GRY WHT WHT WHT WHT RED PRIMARY INTERLOCK SWITCH 9 PIN WIRE HARNESS N O N C COM COM MONITOR SWITCH N O N O GRN RED GRN GRN GRN BLK RED N O COM DOOR SENSING SWITCH CN C CN A CN B 1 9 1 2 1 5 SECONDARY INTERLOCK RELAY POWER UNIT RY1 RY3 RY2 RY4 T1 1 2 RED GRN 1 2 3 4 5 ORG RED BRN CN A TURNTABLE MOTOR FUSE HOLDER WHT BLK GRY BLK RED RED BLK BLK GRY GRY to Base Plate Right COM COM RY2 WHT BLK BLK RE...

Page 33: ... MOTOR FAN MOTOR AC H MICRO DOOR SENSING SWITCH HOOD LAMP HOOD LAMP HOOD LAMP HOOD LAMP COMMON HOOD LAMP HOOD LAMP DOOR SENSING SWITCH NOTE IF NOT SPECIFIED 1 4W 5 CN B CN A CN C D1 D4 1N4002 RY1 RY2 RY3 RY4 D20 1SS270A D40 1SS270A C21 10µ 35v SP1 PKM22EPT Q21 KRC243M Q22 KRA101M 1 a b c d 5 D3 D4 D2 D1 3 8 C1 0 1µ 50v C2 470µ 50v VRS1 10G471K J1 D21 1SS270A D22 1SS270A A 3 A 1 D23 1SS270A A5 D24 ...

Page 34: ...EG17 SEG18 SEG19 SEG20 SEG21 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 COM1 COM2 COM3 COM0 LCD COM1 LCD COM2 LCD COM0 LCD COM1 LCD COM2 LCD AVSS VREF VCC SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 VL1 AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0 P57 P56 P55 CNTR0 P53 P52 P51 P50 P47 P46 P45 P44 P43 INT0 SEG14 SEG9 SEG15 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG16 SEG17 ...

Page 35: ...ure S 4 Printed Wiring Board CN F DIP R53 R52 J2 2 1 R50 RY1 RY2 D22 CN A J1 D3 D4 T1 S 1 1 5 3 5 8 P D1 D2 QKITPB036MRE0 ZD1 C3 E Q1 R3 R5 R1 BFB LOT NO D40 CN B CN C R51 R4 R2 C2 RY4 RY3 D24 D23 4 C1 3 SP1 C50 C51 D20 D21 C21 Q22 Q21 VRS1 B B E E IC 1 R54 1 1 1 11 2 3 8 1 4 5 ...

Page 36: ...glass angle R 1201 1 AG 2 5 2 PGLSPB004MRE0 M Hood lamp glass 1 AH 2 6 PCOVPB099MRT0 M Base cover R 1200 1 AR 2 6 PCOVPB100MRT0 M Base cover R 1201 1 AS RIGHT PANEL PARTS 3 1 DPWBFB102MRU0 M Power unit 1 AZ 3 1A QCNCMA017JDZZ M 3 pin connector CN A 1 AG 3 1B QCNCMA275DRE0 J 2 pin connector CN B 1 AB 3 1C QCNCMA470DRZZ J 9 pin connector CN C 1 AF C1 RC KZA087DRE0 J Capacitor 0 1 uF 50V 1 AB C2 VCEA...

Page 37: ...37WRFZ M Light guide 1 AC 5 2 9 LHLD B020MRF0 M LCD holder 1 AC 5 2 10 PSHEPA786WREZ M LED sheet 1 AD 5 2 11 XEPSD30P10XS0 M Screw 3mm x 10mm 2 AB 5 2 12 PCUSUB067MRP0 M Cushion 1 AB 5 2 13 PCUSUB069MRP0 M Cushion 1 AB 5 3 GCOVHB045MRF0 M Choke cover 1 AG 5 4 PSHEPB021MRE0 M Sealer film 1 AE 5 5 XCPSD40P08000 M Screw 4mm x 8mm 4 AA MISCELLANEOUS 6 1 CFZK B460MRK0 M Installation material assembly 1...

Page 38: ...4 5 4 18 4 19 5 5 5 5 7 2 3 3 3 4 3 5 3 2 3 1 3 6 5 2 12 HOW TO ORDER REPLACEMENT PARTS To have your order filled promptly and correctly please furnish the following information 1 MODEL NUMBER 2 REF NO 3 PART NO 4 DESCRIPTION Order Parts from the authorized SHARP parts Distributor for your area Defective parts requiring return should be returned as indicated in the Service Policy RIGHT PANEL PARTS...

Page 39: ... 5 7 5 7 5 7 1 A 6 10 7 2 4 13 4 15 4 8 7 8 2 1 2 6 1 13 7 2 7 2 1 14 7 2 7 3 7 2 1 4 1 11 7 3 2 5 1 10 4 21 4 13 7 7 4 16 4 16 7 5 7 9 7 1 4 20 4 5 1 7 4 23 4 24 4 22 7 3 4 14 7 3 7 1 5 2 4 2 2 6 8 4 9 7 4 1 8 1 14 1 13 4 6 4 3 4 7 4 2 7 3 4 11 7 8 7 1 7 3 2 3 4 1 7 8 1 5 4 12 1 12 7 1 7 1 1 3 1 6 1 2 1 1 4 4 7 7 7 1 2 5 1 2 5 2 1 11 B B A ...

Page 40: ...rior written permis sion of the publisher 01 SHARP CORP 12S1 730E Printed in U S A 6 4 5 1 2 3 6 4 5 1 2 3 A B C D E F G H A B C D E F G H 4 3 TURNTABLE TRAY TOP PAD SPADBB043MRE0 BOTTOM PAD SPADBB044MRE0 SSAKAB004MRE0 SPAKCB324MRR1 R 1200 SPAKCB324MRR2 R 1201 PACKING CASE ACCESSORY PACK WRAP COVER SSAKH0103MRE0 Non replaceable items DOOR PROTECTOR SPADP0221MRE0 INSTALL MATERIAL ASSEMBLY 6 1 6 3 O...

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