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R- 330DK
R-330DW

6

4

5

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6

4

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A

B

C

D

E

F

G

H

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B

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H

Figure S-5. Printed Wiring Board of Power Unit

DIP

F

SW

R3

SP1

R2

E

B R1

C4

C2

C5

RY2

RY1

VRS1

P

S

T1

RY3

(CN - D)

D6

D1

D4

D8

D2

D3

(D20)

D5

R4

Q2

Q3

B

B

E

E

R6

D9

D7

(J2)

(J1)

(D10)

R5

ZD1

1

2

C3

C1

CN - C

CN - A

(CN - B)

SH - B

SH - A

(RED) (GREEN)

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1

1

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2

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Summary of Contents for R-330DK

Page 1: ...G 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 10 TEST PROCEDURE 12 TOUCH CONTROL PANEL 21 COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE 26 PICTORIAL DIA...

Page 2: ...tion 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 Mic...

Page 3: ...pacitor 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 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: ...ing 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 HighVoltageCapac...

Page 6: ...umber selection pads Kitchen Timer pad Clock pad Minute Plus pad Power Level pad Stop Clear pad Start touch On 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 ins...

Page 7: ...GRAM 1 Door open handle Pull to open door 2 Door latches The oven will not operate unless the door is securely closed 3 Removable turntable support 4 Removable turntable The turntable will rotate clockwise or counterclockwise 5 Oven lamp It will light when oven is operating or door is opened 6 Oven door with see through window 7 Ventilation openings Rear 8 Auto Touch control panel 9 Time display D...

Page 8: ... The monitor switch electrically monitors the operation of the secondary interlock switch and primary interlock relay and is mechanically associated with the door so that it will function in the following sequence 1 Whenthedooropensfromtheclosedposition theprimary interlockrelay RY2 andsecondaryinterlockswitchopen their contacts And contacts of the relay RY1 remains closed Then the monitor switch ...

Page 9: ... After about 16 seconds the cook relay RY 2 is energized The power transformer is turned on microwave energy is produced and first stage is started The 16 seconds is the cooling time required to remove any vapor from the oven cavity and sensor NOTE During this first stage do not open the door or touch STOP CLEAR pad 4 When the sensor detects the vapor emitted from the food the display switches ove...

Page 10: ...C 60 Hz GRN MONITOR FUSE 20A THERMAL CUT OUT OVEN THERMAL CUT OUT MG COM CAPACITOR 0 94µF AC 2300V A1 A2 COM F3 F1 F2 AH SENSOR MAGNETRON Figure O 1 Oven Schematic Off Condition SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 CLOCK APPEARS ON DISPLAY 120V AC 60 Hz OVEN LAMP TURN TABLE MOTOR FAN MOTOR POWER TRANSFORMER CAPACITOR 0 94µF AC 2300V MONITOR SWITCH RECTIFIER MAGNETRON SECONDARY INTERLOC...

Page 11: ... 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 direction CO...

Page 12: ...S BA021WRK0 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 prima...

Page 13: ...ly uneven heating is pro duced in oven load food Oven does not cook properly when programmed for Cooking Power 50 PERCENT mode Operates prop erly on Cooking Power 100 PER CENT mode Oven goes into COMPU DEFROST but food is not defrosted well AH sensor does not end during Sen sor cooking condition Oven does not shut off after a cup of water is boiling by sensor cooking Oven stops at 16 sec after sta...

Page 14: ...REME 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 thermocouple...

Page 15: ...s of the 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 Discha...

Page 16: ...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 Discharge high voltage capacitor 4 Isolatetheswitchandconnecttheohmmetertothecommon ...

Page 17: ...al microwave ovens proper maintenance cannot be performed with only a voltmeter and ohmmeter In this service manual the touch control panel assembly is divided into two units Control Unit and Key Unit and also the Control Unit is divided into two units CPU Unit and Power Unit and troubleshooting by unit replacement is described according to the symptoms indicated Before testing 1 Disconnect the po...

Page 18: ... not sound or continues to sound b Clock does not operate properly c Cooking is not possible When 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 Reconnect all leads removed from components during testing 5 Re install the outer case cabinet 6 Reconnect the power supply cord after the outer cas...

Page 19: ...nit with an A C voltmeter 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 RE...

Page 20: ...ts during testing 7 Re install the outer case cabinet 8 Reconnect the power supply cord after the outer case is installed 9 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 power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high volta...

Page 21: ...ill 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 Reheat pad once and touch the start pad Now the oven is in the sensor cooking condition and SENSOR REHEAT will appear in the display 5 The oven will operate for the first 16 seconds without generating microwave energ...

Page 22: ...uchthe Start pad 9 2 The control panel is in the sensor cooking operation 9 3 After approximately 30 seconds push plunger of select switch for more than 3 seconds This condition is same as judgement by AH sensor 9 4 After approximately 3 seconds the display shows X X X X which is the remaining cooking time and the display counts down If the above is not the case the control unit is probably defect...

Page 23: ...izing signal circuit absolute humidity sensor circuit and back light circuit 1 ACL This circuit generates a signal which resets the LSI to the initial state when power is supplied 2 Indicator Circuit This circuit consists of 40 segments and 16 common electrodes using a Liquid Crystal Display The Liquid Crystal Display LCD is drived by LCD driver IC3 3 Power Source Circuit This circuit generates vo...

Page 24: ... key section A pulse signal is input to ANI7 P100 P101 P102 and P103 terminal while one of G7 line keys on key matrix is touched 21 P112 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to ANI7 P100 P101 P102 and P103 terminal while one of G6 line keys on key matrix is touched 22 P113 OUT Key strobe signal Signal applied to touch key section A pulse signal is input...

Page 25: ...al similar to ANI7 WheneitherG12lineonkeymatrixistouched acorrespondingsignalwillbeinputintoP100 39 P101 IN Signal similar to ANI7 WheneitherG11lineonkeymatrixistouched acorrespondingsignalwillbeinputintoP101 40 VSS1 IN Power source voltage 5 0V The power source voltage to the drive LSI is input to VSS1 terminal Connected to VC 41 P102 IN Signal similar to ANI7 WheneitherG10lineonkeymatrixistouche...

Page 26: ...istance values in parallel with R98 R102 Changing the resistance values results in that there is the same potential at both F 3 terminal of the absolute humidity sensor and ANI4 terminal of the LSI The voltage of ANI5 terminal will indicate about 2 5V This initial balancing is set up about 16 seconds after the unit is put in the Sensor Cooking mode As the sensor cooking proceeds the food is heated...

Page 27: ...ol 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 it is possible ...

Page 28: ... voltage transformer High voltage capacitor 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 condit...

Page 29: ...t 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 high voltage wire B from the power transformer 5 Disconnect the high voltage wire of 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 screw holding ...

Page 30: ...e wire leads to the magnetron and thermal cut out MG Refer to PICTORIAL DIAGRAM on page 32 6 Re installoutercaseandcheckthattheovenisoperating properly CAUTION WHEN REPLACING MAGNETRON BE SURE THE R F GASKET IS IN PLACE AND MOUNT ING SCREWS ARE TIGHTENED SECURELY 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 Dis...

Page 31: ...g procedure 3 Hold the center of the bracket which supports the shaft of the fan motor on the flat table 4 Apply the screw lock tight into the hole for shaft of the fan blade 5 Install the fan blade to the shaft of fan motor by pushing thefanbladewithasmall lightweight ballpeenhammer or rubber mallet CAUTION Do not hit the fan blade strongly when installed because the bracket may be disfigured Mak...

Page 32: ...switch contacts close when door is opened 4 Re install outer case and check for microwave leakage around door with an approved microwave survey meter Refer to Microwave Measurement Procedure 1 Disconnect the power supply cord and remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect wire leads from the switches 5 Remove two 2 screws holding latch hook ...

Page 33: ...proper microwave radiation emission limitation standards After any service make sure of the following 1 Door latch heads smoothly catch latch hook through latch holes and that latch head goes through center of latch hole 2 Deviation of door alignment from horizontal line of cavity face plate is to be less than 1 0mm 3 Door is positioned with its face pressed toward cavity face plate 4 Check for mi...

Page 34: ...OWER TRANSFORMER COM NO NOTE The neutral WHT wire must be connected to the neutral WHT wire of the power supply cord GRY RED RED RED WHT YLW WHT BLK BLK BLK YLW YLW RED GRN RED GRN GRN WHT GRY BLK BLK WHT BLUE MARK BLK BLK BLK THERMAL CUT OUT MG FAN MOTOR THERMAL CUT OUT OVEN MONITOR FUSE HOLDER BLK BLK BLK BLK GRY WHT WHT 2 1 WHT WHT WHT GRY YLW RED GRN RY2 RY1 SP1 IC1 SH A SH B PRIMARY INTERLOCK...

Page 35: ...1000µ 35v C4 10µ 35v R1 2 4k 1SS270A 1SS270A D1 D4 11ES1 D6 R5 4 7k R2 680 1 2w R3 510 1 2w R6 3 3k Q2 2SB1238 SP1 PKM22EPT Q1 2SB1238 RY1 RY2 Q3 KRC243M CN C 12PIN LEAD WIRE HARNESS LED GND VC VA INT VR BUZZER MICRO NC NC DOOR SENSING SWITCH OVEN LAMP TURNTABLE MOTOR FAN MOTOR AC AC MICRO DOOR SENSING SWITCH OVEN LAMP TURNTABLE MOTOR FAN MOTOR C10 C 2 C 3 C 1 C 4 C 9 C 5 C 6 C 7 C 8 C11 C12 A 2 N...

Page 36: ...P35 P34 P33 P32 P31 P30 P103 P102 VSS1 P101 P100 VDD0 ANI7 ANI6 ANI5 ANI4 ANI3 AVREF R102 37 4kF R40 4 7k R67 15k R66 15k R65 15k R64 15k R63 15k R62 15k R61 15k R60 15k R79 270k P103 P102 P101 P100 ANI7 ANI6 R78 270k R77 270k R76 270k R75 270k R74 270k R101 75kF R100 150kF R99 300k R98 620k R10 1k R11 15k R68 15k R69 15k R70 15k R71 15k R72 15k R73 15k R41 15k R92 1 8kF R90 330 1w R94 10k R95 47k...

Page 37: ...G5 SEG4 SEG3 SEG2 SEG1 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 VDD NC NC RESET TEST VREF R03 R02 R01 R00 P13 P12 P11 P10 P03 P02 P01 P00 K03 K02 K01 K00 NC NC NC SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG9 1 100 76 75 51 25 IC3 IZA951DR 26 50 R134 15k R132 33k R133 510k R120 4 7k R121 4 7k R122...

Page 38: ... H A B C D E F G H Figure S 5 Printed Wiring Board of Power Unit DIP F SW R3 SP1 R2 E B R1 C4 C2 C5 RY2 RY1 VRS1 P S T1 RY3 CN D D6 D1 D4 D8 D2 D3 D20 D5 R4 Q2 Q3 B B E E R6 D9 D7 J2 J1 D10 R5 ZD1 1 2 C3 C1 CN C CN A CN B SH B SH A RED GREEN 1 1 1 1 2 3 2 12 ...

Page 39: ...r unit 1 BC 3 1A QCNCMA446DRE0 2 pin connector CN A 1 AC 3 1B FW VZA232DRE0 12pin lead wire CN C 1 AE 3 1C FW VZA195DRE0 Switch harness A SH A 1 AD 3 1D FW VZA256DREZ Switch harness B SH B 1 AF C1 RC KZA087DRE0 Capacitor 0 1 uF 50V 1 AA C2 VCEAB31VW108M Capacitor 1000 uF 35V 1 AF C3 RC KZA087DRE0 Capacitor 0 1 uF 50V 1 AA C4 5 VCEAB31VW106M Capacitor 10 uF 35V 2 AA D1 4 VHD11ES1 1 Diode 11ES1 4 AB...

Page 40: ...1 AH DOOR PARTS 5 1 FDORFA332WRT0 Door panel 1 BD 5 2 PSHEPA382WRE0 Sealer film 1 AH 5 3 GWAKPA713WRRZ Door frame R 330DK 1 AX 5 3 GWAKPA715WRRZ Door frame R 330DW 1 AX 5 4 HPNL A740WRRZ Door screen R 330DK 1 AS 5 4 HPNL A742WRRZ Door screen R 330DW 1 AS 5 5 LSTPPA193WRFZ Latch head 1 AE 5 6 MSPRTA187WRE0 Latch spring 1 AC 5 7 XCPSD40P08000 Screw 4mm x 8mm 4 AA 5 8 PCUSUA461WRP0 Cushion 1 AB 5 9 G...

Page 41: ... 4 17 1 11 4 14 4 2 1 12 7 1 7 5 1 7 4 21 1 8 7 3 7 3 1 13 7 6 4 24 4 11 4 19 7 2 4 9 1 6 1 1 7 1 2 3 2 3 7 6 7 6 7 6 7 6 1 9 4 6 7 6 4 15 4 16 4 18 7 3 4 8 7 4 4 4 4 15 4 22 7 6 7 6 1 4 4 7 7 7 7 6 7 2 4 23 4 20 7 1 7 6 4 10 6 9 4 20 4 12 6 2 6 1 4 1 7 6 1 3 1 2 1 1 4 3 2 4 4 5 2 2 7 3 7 1 1 14 1 5 6 6 7 9 4 22 4 25 4 23 7 3 1 15 ...

Page 42: ... 2 3 A B C D E F G H A B C D E F G H CONTROL PANEL PARTS DOOR PARTS MISCELLANEOUS 3 2 3 1 3 5 3 4 3 6 Actual wire harness may be different from illustration 6 4 6 3 CAPACITOR 6 5 3 3 1 5 9 5 1 5 3 5 4 3 6 3 3 5 7 5 7 5 7 5 6 5 7 5 2 5 5 5 8 ...

Page 43: ...PADPA204WRE0 TOP PAD ASSEMBLY FPADBA416WRKZ PLASTIC BAG SSAKHA034WRE0 Not replaceable items PACKING CASE SPAKCD361WREZ R 330DK SPAKCD362WREZ R 330DW BOTTOM PAD ASSEMBLY FPADBA417WRKZ 6 2 TURNTABLE TRAY 6 8 INSTRUCTION BOOK PRINTING MATTER 6 1 TURNTABLE SUPPORT TRAY PACK SPADFA451WRE0 6 10 RECIPE SHEET INTO THE OVEN CAVITY ...

Page 44: ...000 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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