Sharp R-610DK Service Manual Download Page 9

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R -610DK
R-610DW
R -610 DS

Figure O-1. Oven Schematic-Off Condition

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. CLOCK APPEARS ON DISPLAY

SCHEMATIC

NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED
3. VARIABLE COOKING CONTROL "P-HI" (100%)
4. "START" PAD TOUCHED

Figure O-2. Oven Schematic-Cooking Condition

120V AC
60 Hz

OVEN
LAMP

TURN-
TABLE
MOTOR

FAN
MOTOR

POWER
TRANSFORMER

CAPACITOR 0.94

AC 2200V

MONITOR
SWITCH

RECTIFIER

MAGNETRON

SECONDARY
INTERLOCK
SWITCH

TTM

MONITOR
FUSE 20A

N.O.

COM.

N.O.

DOOR
SENSING
SWITCH

(RY-1)

(RY-2)

CONTROL UNIT

PRIMARY
INTERLOCK
RELAY

THERMAL
CUT-OUT (OVEN)

THERMAL
CUT-OUT (MG.)

GRN

OVEN
LAMP

TURN-
TABLE
MOTOR

FAN
MOTOR

POWER
TRANSFORMER

MONITOR
SWITCH

RECTIFIER

SECONDARY
INTERLOCK
SWITCH

TTM

N.O.

DOOR
SENSING
SWITCH

(RY-1)

(RY-2)

CONTROL UNIT

PRIMARY
INTERLOCK
RELAY

120V AC
60 Hz

GRN

MONITOR
FUSE 20A

THERMAL
CUT-OUT (OVEN)

THERMAL
CUT-OUT (MG.)

COM.

CAPACITOR 0.94

AC 2200V

COM

RECTIFIER

MAGNETRON

Summary of Contents for R-610DK

Page 1: ...SERVICE PERSONNEL 1 MICROWAVE MEASUREMENT PROCEDURE 2 FOREWORD AND WARNING 3 PRODUCT SPECIFICATIONS 4 GENERAL INFORMATION 4 OPERATION 6 TROUBLESHOOTING GUIDE 9 TEST PROCEDURE 10 TOUCH CONTROL PANEL 18 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 22 PICTORIAL DIAGRAM 29 POWER UNIT CIRCUIT 30 CPU UNIT CIRCUIT 31 PRINTED WIRING BOARD 32 PARTS LIST 33 PACKING AND ACCESSORIES 35 S6014R610DPW R 610DK ...

Page 2: ...neration 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...

Page 3: ...tage capacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that the 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 ...

Page 4: ...er 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 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 Co...

Page 5: ...he door packing is not damaged D The door is not deformed or warped E There is no 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 energized High...

Page 6: ...d STOP CLEAR pad START pad Oven Cavity Light Yes Safety Standard UL Listed FCC Authorized DHHS Rules CFR Title 21 Chapter 1 Subchapter J SPECIFICATION GENERAL INFORMATION GROUNDING INSTRUCTIONS This oven is equipped with a three prong grounding plug It must be plugged into a wall receptacle that is properly installed and grounded in accordance with the National Electrical Code and local codes and ...

Page 7: ...vable turntable Place the turntable on the turntable support cecurely The turntable will rotate clockwise or counterclockwise Only remove for cleaning 11 Ventilation openings Rear 12 Oven light It will light when oven is operating or door is opened 13 Wave guide cover DO NOT REMOVE NOTE The directed features are disabled after three minutes when the oven is not in use These features are automatica...

Page 8: ...owing 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 digital read out displays the time still remaining in the cook cycle when the door was opened 7 The monitor switch electrically monitors the operation of the secondary interlock switch and primary interlock relay and is mechanically associated wi...

Page 9: ...APACITOR 0 94µF AC 2200V MONITOR SWITCH RECTIFIER MAGNETRON SECONDARY INTERLOCK SWITCH TTM OL FM MONITOR FUSE 20A A1 A2 N O COM COM N O DOOR SENSING SWITCH RY 1 RY 2 CONTROL UNIT PRIMARY INTERLOCK RELAY THERMAL CUT OUT OVEN THERMAL CUT OUT MG B2 B1 GRN OVEN LAMP TURN TABLE MOTOR FAN MOTOR POWER TRANSFORMER MONITOR SWITCH RECTIFIER SECONDARY INTERLOCK SWITCH TTM OL FM N O N O DOOR SENSING SWITCH RY...

Page 10: ...MARY INTERLOCK RELAY RY2 RELAY RY1 SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER OP ERATION REFERTOCHAPTER TESTPRO CEDURE NOTE MONITOR FUSE AND MONITOR SWITCH ARE REPLACED AS AN ASSEMBLY TURNTABLE MOTOR The turntable motor rotates the turntable located on the bottom of the oven cavity so that the foods on the turntable cook evenly during cooking The turntable may turn in either directio...

Page 11: ...t FFS BA023WRK0 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 p...

Page 12: ... 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 pro duced in oven load food Oven does not cook properly when programmed for Cooking Power P 50 mode Operates properly on Cooking Power P HI 100 mode Oven goes into COMPU DEFROST but food is not defrosted well ...

Page 13: ... SO EXTREME CAUTION SHOULD BE OBSERVED Power output of the magnetron can be measured by performing a water temperature rise test This test shouldonlybeusedifabovetestsdonotindicateafaultymagnetronandthereisnodefectinthefollowing componentsorwiring siliconrectifier highvoltagecapacitorandpowertransformer Thistestwillrequire a 16 ounce 453cc measuring cup and an accurate mercury thermometer or therm...

Page 14: ...ven cavity especially 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 THERMAL CUT OUT TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 To discharge the...

Page 15: ...lock switch 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 PRIMARY 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 To discharge the high voltage capacit...

Page 16: ...ICs etc Therefore unlike conventional microwave ovens proper maintenance cannot be performed with only a voltmeter and ohmmeter In this service manual the control panel unit is divided into three units CPU Unit Key Unit and Power Unit and troubleshooting by unit replacement is described according to the symptoms indicated Before testing 1 Disconnect the power supply cord and then remove outer case...

Page 17: ...display fails to clear when the STOP CLEAR pad is depressed first verify the flat ribbon cable is making good contact verify that the door sensing switch stop switch operates properly that is the contacts are closed when the door is closed and open when the door is open If the door sensing switch stop switch is good disconnect the flat ribbon cable that connects the key unit to the control unit an...

Page 18: ...should indicate 120 volts if not check oven circuit RY1 and RY2 Relay Test These relays are operated by D C voltage Check voltage at the relay coil with a D C voltmeter during the microwave cooking operation DC voltage indicated Defective relay DC voltage not indicated Check diode which is connected to the relay coil If diode is good control unit is defective RELAY SYMBOL OPERATIONAL VOLTAGE CONNE...

Page 19: ...or and block it open 3 To discharge the high voltage capacitor wait for 60 seconds 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 re connect the power supply cord 7 Follow the troubleshooting guide given below for repair STEPS OCCURRENCE CAUSE OR CORRECTI...

Page 20: ...dition the synchronizing signal is available in order to compose a basic standard time in the clock circuit Symbol Voltage Application VC 5V LSI IC1 4 Relay Circuit A circuit to drive the magnetron fan motor turntable motor and light the oven lamp 5 Buzzer Circuit The buzzer is responsive to signals from the LSI to emit audiblesounds keytouchsoundandcompletionsound 6 Synchronizing Signal Circuit T...

Page 21: ...g signal will be input into P44 23 P43 IN Signal similar to P45 When either G10 line on key matrix is touched a corresponding signal will be input into P43 24 INT0 IN Signal synchronized with commercial power source frequency This is the basic timing for time processing of LSI 25 P41 IN Signal similar to P45 When either G9 line on key matrix is touched a corresponding signal will be input into P41...

Page 22: ...47 P11 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P41 P43 P44 and P45 terminal while one of G2 line keys on key matrix is touched 48 P10 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P41 P43 P44 and P45 terminal while one of G1 line keys on key matrix is touched 49 50 P07 P06 OUT Terminal not used 51 72 SEG21 SEG0 OUT...

Page 23: ...t terminal of the touch control panel then it is possible to check and repair the controls of the touch control panel it is also possible to check the sensor related controls of the touch control panel by using the dummy resistor s 3 Servicing Tools Tools required to service the touch control panel assembly 1 Soldering iron 30W It is recommended to use a soldering iron with a grounding terminal 2 ...

Page 24: ...pacitor and High voltage rectifier assembly 2 Hot parts Oven lamp Magnetron High voltage transformer WARNING FOR WIRING 1 Disconnect the power supply cord 2 Visuallycheckthedoorandcavityfaceplatefordamage dents cracks signs of arcing etc Carry out any remedial work that is necessary before operating the oven Do not operate the oven if any of the following conditions exist 1 Door does not close fir...

Page 25: ...otor thermal cut out oven thermal cut out MG all switches on the latch hook and the magnetron 5 Release the two 2 snap bands of the main wire harness from the oven cavity 6 Remove the lamp socket from the lamp angle Refer to OVEN LAMP AND LAMP SOCKET REMOVAL 7 Remove the two 2 screws holding the front leg to the oven cavity 8 Remove the front leg from the oven cavity by releasing the three 3 tabs ...

Page 26: ...cket 7 Remove the oven lamp socket from the lamp angle 8 Now the oven lamp socket is free 3 Discharge the high voltage capacitor 4 Disconnect the high voltage wire B from the power transformer 5 Disconnect the high voltage wire of the high voltage rectifier assembly from the magnetron 6 Disconnect the filament lead short one of the power transformer from the high voltage capacitor 7 Remove one 1 s...

Page 27: ...pply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Open covers of the terminal insulator by using small flat type screw driver 5 Remove the receptacle from the terminal insulator 6 Now the terminal insulator is free Installation TERMINAL INSULATOR REPLACEMENT Terminal Push Pull down 1 2 Lever Positive lock connector 1 Insert the receptacle i...

Page 28: ...ement Procedure Figure C 5 Latch Switch Adjustments REMOVAL 1 Disconnect the power supply cord and then remove the outer case 2 Open the door slightly 3 Todischargehighvoltagecapacitor waitfor 60seconds 4 Disconnect the 8 pin wire harness from the power unit on the base plate 5 Insert a putty knife thickness of about 0 5mm into the gap between the choke cover and door frame as shown in Figure C 6 ...

Page 29: ...holding the door panel to the door screen 6 Now door panel is free HANDLE 7 Remove the two 2 screws holding the handle mounting angle to the handle through the door screen 8 Now the handle is free LATCH HEAD AND LATCH SPRING 7 Slide the latch head and remove it from the door frame with releasing the latch spring from the door frame and the latch head 8 Now the latch head and the latch spring are f...

Page 30: ... left edge of the key sheet to the correct position of door screen 3 Stick the key sheet firmly to the door screen by rubbing with soft cloth not to scratch NOTE For CPU unit Handle the CPU unit carefully so that the ribbon cable does not come off Because the ribbon cable is glued on the LCD and the printed wiring board only by heated paste Printed wiring board of CPU unit Liquid Crystal Display L...

Page 31: ...be connected to the neutral WHT wire of the power supply cord GRY RED RED WHT YLW WHT BLK GRY GRN WHT GRY BLK BLK WHT BLK BLK GRY WHT BLUE MARK YLW BLK BLK THERMAL CUT OUT MG FAN MOTOR THERMAL CUT OUT OVEN MONITOR FUSE HOLDER BLK BLK WHT 2 1 WHT WHT WHT WHT GRY CN A CN A CN B H N NOTE The grounding conductor of the power supply cord has been grounded by power supply cord fixing screw The screw mus...

Page 32: ...C 3 C 2 C 7 A 2 NO COM COM NO D1 S1NB10 T1 AC AC GND VR BUZZER MICRO N C DOOR SENSING SWITCH OVEN LAMP TURNTABLE MOTOR FAN MOTOR CN C 8PIN LEAD WIRE HARNESS OVEN LAMP TURNTABLE MOTOR FAN MOTOR MICRO DOOR SENSING SWITCH CN A RY1 RY2 a b c d 1 3 7 4 J1 D8 1SS270A D7 1SS270A VRS1 SP1 C1 1000µ 25v C2 0 1µ 50v 10G471K C 1 INT B 1 B 2 GND ...

Page 33: ...EG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 COM3 COM2 COM1 COM1 COM2 COM3 AVSS VREF VCC SEG0 SEG1 SEG8 VL2 VL1 AN7 AN6 AN5 P64 P63 P62 AN1 P60 P57 P56 P55 CNTR0 P53 P52 P51 P50 P47 P46 P45 P44 P43 INT0 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 P06 P07 P10 P11 P12 P13 P14 P15 P16 P17 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 R40...

Page 34: ... B C D E F G H Figure S 4 Printed Wiring Board of Power Unit 3 14 8 1 1 2 2 1 1 1 D9 C50 C3 C51 D1 C2 E C B Q1 JX JY R53 CN B CN F CN C CN A DIP R50 R51 R54 R52 R2 IC2 1 2 C1 R1 ZD1 SP1 D7 OM DU OM DU RY2 RY1 J1 D8 S VRS1 4 1 2 3 5 6 7 T1 P OL TTM FM MICRO AC CN H C52 1 ...

Page 35: ...t leg R 610DW 1 AL 2 5 GLEGPA080WRFZ Front leg R 610DS 1 AL 2 6 PPACGA178WREZ Cushion 2 AD POWER UNIT PARTS 3 1 DPWBFC069WRUZ Power unit 1 AZ 3 1A QCNCMA446DRE0 2 pin connector CN A 1 AC 3 1B QCNCMA431DRE0 2 pin connector CN B 1 AC 3 1C QCNCMA340DRE0 8 pin connector CN C 1 AD C1 VCEAB31EW108M Capacitor 1000 uF 25V 1 AE D1 RSRCDA013DRE0 Diode bridge S1NB10 1 AG RY1 RRLY A094DRE0 Relay OMIF S 112LM ...

Page 36: ...w 4mm x 16mm 2 AA 5 19 FW VZA264DREZ 8 pin wire harness 1 AN 5 20 DPWBFC067WRKZ CPU unit 1 BA 5 21 XCPSD40P06000 Screw 4mm x 6mm 2 AA MISCELLANEOUS 6 1 FROLPA095WRKZ Turntable support 1 AP 6 2 NTNT A099WRE0 Turntable tray 1 AX 6 3 FW VZB789WREZ Main wire harness 1 AS 6 4 QW QZA150WRE0 High voltage wire B 1 AF 6 5 PZET A012WRE0 Terminal insulator 1 AB 6 6 TCAUAA156WRR0 User caution label 1 AF 6 7 T...

Page 37: ... indicated in the Service Policy REF NO PART NO DESCRIPTION Q TY CODE 7 19 XOTSD40P12000 Screw 4mm x 12mm 2 AA DOOR PROTECTION SHEET SPADPA178WRE0 TOP PAD ASSEMBLY FPADBA426WRKZ PLASTIC BAG SSAKHA032WRE0 Not replaceable items PACKING CASE SPAKCD405WREZ R 610DK SPAKCD407WREZ R 610DW SPAKCD408WREZ R 610DS BOTTOM PAD ASSEMBLY FPADBA427WRKZ 6 2 TURNTABLE TRAY 6 10 INSTRUCTION BOOK PRINTING MATTER 6 1 ...

Page 38: ...14 6 9 1 13 6 8 4 12 1 1 7 3 7 11 7 11 6 7 4 27 4 18 4 19 7 15 1 11 4 20 1 10 4 14 4 9 1 7 3 1 4 29 6 1 6 2 7 19 2 6 2 6 7 19 4 1 1 12 7 16 4 22 4 22 2 2 2 1 7 6 1 9 1 6 7 5 7 7 4 2 4 5 4 11 7 15 7 12 7 13 7 14 7 8 7 5 7 5 7 3 4 25 4 8 7 5 2 3 7 1 1 5 1 14 2 5 4 16 7 3 6 6 4 10 7 9 7 17 4 7 4 4 7 4 4 21 1 8 1 4 1 4 1 3 1 3 7 10 4 15 7 1 7 3 7 11 7 11 4 3 4 6 A A ...

Page 39: ... C D E F G H DOOR PARTS Actual wire harness may be different from illustration CAPACITOR 5 13 5 13 5 10 5 14 5 12 5 12 5 12 5 21 5 12 4 13 5 1 6 3 6 4 6 5 5 2 5 4 5 19 5 21 5 6 5 7 5 12 5 15 5 16 5 3 1 5 3 5 5 6 11 6 12 5 8 5 18 5 13 5 11 5 11 5 9 5 20 5 17 MISCELLANEOUS ...

Page 40: ...HT 2000 BY SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be repro duced stored in retrieval systems or trans mitted in any form or by any means elec tronic mechanical photocopying record ing or otherwise without prior written per mission of the publisher ...

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