Sharp R-610DKA Service Manual Download Page 9

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R - 6 1 0 D K A
R - 610DWA
R - 6 1 0 D S A

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

OVEN LAMP
RELAY

TURN-
TABLE
MOTOR

FAN
MOTOR

POWER
TRANSFORMER

MONITOR

SWITCH

RECTIFIER

MAGNETRON

SECONDARY
INTERLOCK
SWITCH

TTM

MONITOR
FUSE 20A

N.O.

COM.

DOOR
SENSING
SWITCH

(RY1)

(RY2)

CONTROL UNIT

PRIMARY
INTERLOCK
RELAY

OVEN THERMAL
CUT-OUT

MG. THERMAL CUT-OUT

GRN

CAPACITOR
0.94

AC 2200V

120V AC
60 Hz

OVEN
LAMP

OVEN LAMP
RELAY

TURN-
TABLE
MOTOR

FAN
MOTOR

POWER
TRANSFORMER

MONITOR

SWITCH

RECTIFIER

MAGNETRON

SECONDARY
INTERLOCK
SWITCH

TTM

MONITOR
FUSE 20A

N.O.

COM.

DOOR
SENSING
SWITCH

(RY1)

(RY2)

CONTROL UNIT

PRIMARY
INTERLOCK
RELAY

OVEN THERMAL
CUT-OUT

MG. THERMAL CUT-OUT

GRN

CAPACITOR
0.94

AC 2200V

Summary of Contents for R-610DKA

Page 1: ...ERVICE 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 S7117R610DPWA R 610DKA...

Page 2: ...generation 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 t...

Page 3: ...ltage 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: ...ap water initially at 20 5 C 68 F in the 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 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 accurate...

Page 5: ... C The 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 ...

Page 6: ...pad 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 an...

Page 7: ...ovable 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 automatic...

Page 8: ...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 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 associate...

Page 9: ... TRANSFORMER MONITOR SWITCH RECTIFIER MAGNETRON SECONDARY INTERLOCK SWITCH TTM OL FM MONITOR FUSE 20A N O N O COM COM DOOR SENSING SWITCH RY1 RY2 CONTROL UNIT PRIMARY INTERLOCK RELAY OVEN THERMAL CUT OUT MG THERMAL CUT OUT GRN B2 B1 CAPACITOR 0 94µF AC 2200V 120V AC 60 Hz OVEN LAMP OVEN LAMP RELAY TURN TABLE MOTOR FAN MOTOR POWER TRANSFORMER MONITOR SWITCH RECTIFIER MAGNETRON SECONDARY INTERLOCK S...

Page 10: ...RIMARY 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 direct...

Page 11: ...rt 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 ...

Page 12: ...n 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 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 defroste...

Page 13: ...LE 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 the...

Page 14: ...oven 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 th...

Page 15: ...erlock 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 capac...

Page 16: ...Cs 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: ...e 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 ...

Page 18: ...oltmeter The meter 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 OPERAT...

Page 19: ...he door 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 COR...

Page 20: ...tage In addition 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...

Page 21: ...touched a corresponding 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 ...

Page 22: ...y matrix is touched 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 P09 P08 OUT Terminal not used ...

Page 23: ... the touch control panel and the oven itself 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...

Page 24: ...apacitor 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 fi...

Page 25: ...motor 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: ...apacitor is now free CAUTION WHEN REPLACING HIGH VOLTAGE RECTI FIER AND HIGH VOLTAGE CAPACITOR GROUND SIDE TERMINAL OF THE HIGH VOLTAGE RECTIFIER MUST BE SECURED FIRMLY WITH A GROUNDING SCREW REMOVAL 1 Disconnect the power supply cord and then remove the outer case 2 Remove the oven cavity assembly from the base plate Refer to OVEN CAVITY ASSEMBLY REMOVAL 3 Discharge the high voltage capacitor 4 D...

Page 27: ...MONITOR SWITCH REMOVAL Reinstallation 1 Re install each switch in its place The secondary interlock monitor switches are in the lower position and the door sensing switch is in the upper position 2 Re connect wire leads to each switch Refer to pictorial diagram 3 Make sure that the monitor switch is operating properly and check continuity of the monitor circuit Refer to chapter Test Procedure and ...

Page 28: ...vity REINSTALLATION 1 Insert the 7 pin wire harness to the holes of the front leg and the oven cavity front plate 2 Catch two 2 pins of door panel on two 2 hole of upper and lower oven hinges 3 Re install choke cover to door panel by pushing 4 Connect the 7 pin wire harness to the power unit on the base plate 5 Now the door is installed Latch Hook Door Sensing Switch Door Secondary Interlock Switc...

Page 29: ...e LCD holder from the door frame Release the four 4 tabs 14 Release the LCD of the CPU unit from the LCD holer 15 Remove the one 1 screw holding the CPU unit to te LCD holder 16 Remove the CPU unit from the LCD holder Release the four 4 tabs 17 Now the CPU unit is free INDIVIDUAL DOOR PARTS REMOVAL DOOR FRAME ASSEMBLY 18 Remove the handle from the door frame assembly Refer to the chapter of HANDLE...

Page 30: ...able 3 Stick the key unit firmly to the door frame 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 Figure C 11 CPU unit ...

Page 31: ... supply cord GRY RED RED WHT YLW WHT BLK GRY GRN GRY GRY BLK BLK GRY BLK BLK GRY WHT YLW BLK YLW BLK THERMAL CUT OUT MG FAN MOTOR THERMAL CUT OUT OVEN MONITOR FUSE HOLDER BLK BLK WHT WHT GRY GRY H N NOTE The grounding conductor of the power supply cord has been grounded by power supply cord fixing screw The screw must allways be kept tight WHT BLK WHT BLK 2 1 GRN GRY 2 3 1 CN B BRN RED ORG YLW GRN...

Page 32: ... AC N OVEN LAMP TURNTABLE MOTOR FAN MOTOR OVEN LAMP TURNTABLE MOTOR FAN MOTOR GND VR INT BUZZER MICRO CN C VRS1 10G471K a b J1 C1 0 1µ 50v D21 1SS270A D22 1SS270A C2 1000µ 25v C21 10µ 35v D20 1SS270A D40 1SS270A R4 3 3k 1 4w Q21 DTD143ES Q22 DTA143ES SP1 PKM22EPT T1 1 7 D3 D4 RY1 RY2 D2 D1 D1 D4 1N4002 3 4 c d AC H CN B MICRO DOOR SENSING SWITCH DOOR SENSING SWITCH ...

Page 33: ... 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 P08 P09 P10 P11 P12 P13 P14 P15 P16 P17 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 R40 4 7k R80 1M R74 270k R75 270k R73 270k R72 270k ...

Page 34: ... 610DSA 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 Figure S 4 Printed Wiring Board of Power Unit D40 CN B SP1 CN C D20 1 7 1 C2 1 7 D3 D4 D2 D21 D22 J1 RY1 RY2 VRS1 D1 4 P S 3 T1 C21 1 2 B B C1 E E Q22 Q21 2 R4 ...

Page 35: ...eg C OVEN 1 AK 1 13 RTHM A096WRE0 Thermal cut out 125 deg C OVEN Interchangeable 1 AK CABINET PARTS 2 1 FDAI A240WRYZ Base plate 1 AW 2 2 GLEGPA074WRE0 Foot 1 AC 2 3 GLEGPA081WRFZ Leg 1 AC 2 4 GCABUA773WRPZ Outer case cabinet R 610DKA 1 BD 2 4 GCABUA775WRPZ Outer case cabinet R 610DWA 1 BD 2 4 GCABUA777WRPZ Outer case cabinet R 610DSA 1 BD 2 5 GLEGPA080WRFZ Front leg R 610DKA 1 AL 2 5 GLEGPA082WRF...

Page 36: ...0DSA 1 BF 5 4 JHNDPA203WRTZ Handle R 610DKA 1 AP 5 4 JHNDPA203WRTZ Handle R 610DWA 1 AP 5 4 JHNDPA205WRTZ Handle R 610DSA 1 AQ 5 5 LANGKA975WRPZ Handle mounting angle 1 AP 5 6 LSTPPA193WRFZ Latch head 1 AE 5 7 MSPRTA187WRE0 Latch spring 1 AC 5 8 LHLD A242WRFZ LCD holder 1 AE 5 9 LHLD A237WRFZ Light guide 1 AL 5 10 PSHEPA786WREZ LED sheet 1 BB 5 11 FW VZA271DREZ 7 pin wire harness 1 AQ 5 12 DPWBFC2...

Page 37: ...x 12mm 3 AA 7 14 XOTSF40P08000 Screw 4mm x 8mm R 610DKA 2 AA 7 14 XOTSE40P08000 Screw 4mm x 8mm R 610DWA 2 AA 7 14 XOTSE40P08000 Screw 4mm x 8mm R 610DSA 2 AA 7 15 XOTSD40P12000 Screw 4mm x 12mm 2 AA 7 16 XOTSD40P10000 Screw 4mm x 10mm 1 AA 7 17 LX EZA060WREZ Special screw 4 AA 7 18 LX CZA073WRE0 Special screw 2 AC DOOR PROTECTION SHEET SPADPA178WRE0 TOP PAD ASSEMBLY FPADBA426WRKZ PLASTIC BAG SSAK...

Page 38: ... 4 22 7 3 7 11 7 11 6 7 4 27 4 18 4 19 7 3 1 11 4 20 4 14 4 9 1 7 3 1 4 24 6 1 6 2 7 15 2 6 7 15 4 1 1 12 7 16 2 2 4 29 2 1 7 6 1 9 1 6 7 5 7 7 4 2 4 5 4 11 7 18 7 1 7 12 7 13 7 14 7 8 7 11 7 11 7 4 7 3 4 25 4 8 7 3 2 3 7 1 1 5 1 10 2 5 4 16 7 3 6 6 4 10 7 9 7 17 4 7 4 4 7 7 4 21 1 8 1 4 1 4 1 3 1 3 7 10 4 15 7 1 7 3 7 11 7 11 7 11 4 3 4 6 A A OVEN AND CABINET PARTS ...

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

Page 40: ...PYRIGHT 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be reproduced stored in retrieval systems or transmitted in any form or by any means electronic mechanical photocopying recording orotherwise withoutprior written permission of the publisher ...

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