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21

R-501FK
R-501FW

Pin No.

Signal

I/O

Description

73/74

VCC/VREF

IN

Connected to GND.

75

AVSS

IN

Connected to VC.

76

COM3

OUT

Terminal not used.

77

COM2

OUT

Common data signal.

Connected to LCD signal COM3.

78

COM1

OUT

Common data signal.

Connected to LCD signal COM2.

79

COM0

OUT

Common data signal.

Connected to LCD signal COM1.

80

VL3

IN

Power source voltage input terminal.

Standard voltage for LCD.

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Содержание R-501FK

Страница 1: ...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 10 TOUCH CONTROL PANEL 18 COMPONENTREPLACEMENTANDADJUSTMENTPROCEDURE 23 PICTORIALDIAGRAM 30 POWERUNITCIRCUIT 31...

Страница 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 Microwav...

Страница 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...

Страница 4: ... 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 Cook...

Страница 5: ... 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 Certain initial parts are intentionally not grounded and present a risk of electrical shock only during servicing Service person nel Do not contact the following parts while the appliance is energized High Voltage Capacitor Powe...

Страница 6: ...nalresponsibilityandobligationofthecustomertocontact SPECIFICATION ITEM DESCRIPTION PowerRequirements 120 Volts 13 0 Amperes 1550 watts 60 Hertz Single phase 3 wire grounded PowerOutput 1000watts IEC705TESTPROCEDURE Operatingfrequencyof2450MHz CaseDimensions Width 24 Height 13 3 8 Depth 19 1 8 Cooking Cavity Dimensions Width 17 3 8 Height 10 1 2 2 0 Cubic Feet Depth 18 5 8 ControlComplement Touch ...

Страница 7: ...he 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 Digital display 99 minutes 99 seconds 10 Wave guide cover 1...

Страница 8: ... to the turntable motor the cooling fan motor and the high voltage componentsarede energized theovenlampremainson andthedigitalread outdisplaysthetimestillremainingin the cook cycle when the door was opened 7 The monitor switch electrically monitors the operation of theprimaryinterlockswitchandsecondaryinterlockrelay andismechanicallyassociatedwiththedoorsothatitwill function in the following sequ...

Страница 9: ... OVEN LAMP MONITOR SWITCH PRIMARY INTERLOCK SWITCH POWER TRANSFORMER MAGNETRON HIGH VOLTAGE CAPACITOR ORG WHT SECONDARY INTERLOCK RELAY ORG BRN ORG ORG RED RED GRY GRY GND WHT F3 F2 F1 SENSOR RY1 OVEN LAMP RELAY COM N O HUMIDITY COM N C HIGH VOLTAGE RECTIFIER ORG CAVITY TEMPERATURE FUSE 120VAC 60Hz COM RED RED WHT WHT WHT WHT BRN WHT WHT WHT ORG RED WHT WHT GRN N O B2 B1 CONTROL UNIT N O RY2 COM D...

Страница 10: ...ON BEFORE REPLACING A BLOWN C T FUSE TEST THE DOOR SENSING SWITCH SEC ONDARY INTERLOCK RELAY RY2 RELAY RY1 PRIMARY INTERLOCK SWITCH AND MONITOR SWITCH FOR PROPER OPERA TION REFER TO CHAPTER TEST PROCE DURE NOTE C T 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...

Страница 11: ...bly 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 of the power transfo...

Страница 12: ...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 pro duced in oven load food Oven does not cook properly when programmed for Cooking Power P 50 mode Operates properly on Cooking P HI HIGH mode Oven goes into COMPU DEFROST but f...

Страница 13: ...TREME 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 thermocoupl...

Страница 14: ...nit Check for restricted air flow through the vent holes 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 C T FUSE TEST 1 Disconnect the power supply cord and then remove outer case 2 Op...

Страница 15: ...nd the door is closed the cooling fan turntable and oven light will be activated by RY1 SECONDARYINTERLOCKRELAY RY2 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 Disconnecttwo 2 wireleadsfromthemaletabterminalsoftheSecondaryInterlockRelay Checkthe state of the relay contacts using a ohmmeter The relay contacts s...

Страница 16: ... touching the pads a certain pad produces no signal at all b When touching a number pad two figures or more are displayed c When touching the pads sometimes a pad produces no signal If the Key unit is defective I TOUCH CONTROL PANEL ASSEMBLY 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 Before performing th...

Страница 17: ...ound 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 case is i...

Страница 18: ...minal of the relay RY1 and the normal open terminal of the relay RY2 on the control unit 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 dio...

Страница 19: ...unctions 2 Followthetroubleshootingguidegivenbelow ifindicatordoesnotlightupafterabovecheckandrepairs are finished 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 of the power transformer 5 Ensure that these leads remain isolated from other components and oven chassis by using i...

Страница 20: ...witch to tell the LSI if the door is open or closed 8 Back Light Circuit A circuit to drive the back light Light emitting diodes LD1 LD4 TOUCHCONTROLPANELASSEMBLY OUTLINEOFTOUCHCONTROLPANEL The touch control section consists of the following units 1 Key Unit 2 Control Unit The Control Unit consists of Power Unit and LSI Unit The principal functions of these units and the signals communicated among...

Страница 21: ...6 P52 OUT Magnetron high voltage circuit driving signal To turn on and off the cook relay RY2 The signals holds L level during microwave cooking 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 17 18 P51 P50 OUT Terminal not used 19 P47 IN Signal coming from touch key When either G12 line on key...

Страница 22: ... OUT Key strobe signal Signal applied to touch key section A pulse signal is input to AN2 P41 P45 P47 and P70 terminal while one of G5 line keys on key matrix is touched 37 P23 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P41 P45 P47 and P70 terminal while one of G4 line keys on key matrix is touched 38 P22 OUT Key strobe signal Signal applied to touch key s...

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

Страница 24: ...ch 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 it is p...

Страница 25: ... power supply cord 2 Make sure that a definite click can be heard when the microwave oven door is unlatched Hold the door in a closed position with one hand then push the door open button with the other this causes the latch leads to rise it is then possible to hear a click as the door switches operate 3 Visuallycheckthedoorandcavityfaceplatefordamage dents cracks signs of arcing etc Carry out any...

Страница 26: ...ead short one of the power transformer from the high voltage capacitor 7 Remove one 1 screw holding capacitor holder with the high voltage rectifier to the base plate 8 Disconnect rectifier terminal from capacitor High voltage rectifier assembly is now free 9 Remove capacitor holder Capacitor is now free CAUTION WHEN REPLACING HIGH VOLTAGE RECTI FIER AND HIGH VOLTAGE CAPACITOR GROUND SIDE TERMINAL...

Страница 27: ...or and block it open 3 Discharge high voltage capacitor 4 Disconnect the wire leads from panel components 5 Remove the one 1 screw holding the control panel assembly to the oven cavity front plate 6 Slide the control panel assembly upward and remove it 7 Now individual components can be removed NOTE 1 Beforeattachinganewkeyunit wipeoff remaining adhesive on the control panel frame surfaces complet...

Страница 28: ...o the control panel frame by rubbing with a soft cloth not to scratch 7 Remove the backing paper from the new graphic sheet 8 Adjust the upper edge and right edge of the graphic sheet to the large depression on the surface of the control panel frame 9 Attach the graphic sheet to the control panel frame by rubbing with a soft cloth not to scratch 10 Attach the ribbon cable to the control panel fram...

Страница 29: ...ket which supports the shaft of the fan motor on the flat table 3 Apply the screw lock tight into the hole for shaft of the fan blade 4 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 Make sure that the fan blade rotates smooth ...

Страница 30: ...n screw and adjust the latch hook position After adjustment check the following 1 In and out play of door remains less than 0 5mm when in the latched position First check upper position of latch hook pushing and pulling upper portion of door toward the oven face Then check lower portion of the latch Figure C 3 Latch Switch Adjustments hook pushing and pulling upper portion of door toward the oven ...

Страница 31: ... to assure compliance with 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 Doorispositionedwithitsfacepressedtowardcavityface pl...

Страница 32: ...d to the terminal with blue mark on the oven light socket POWER TRANSFORMER COM NO NOTE The neutral WHT GRY wire must be connected to the terminal with N mark on the power supply cord RED WHT BRN RED WHT WHT ORG WHT RED RED PNK GRN GRN to Oven cavity WHT WHT WHT WHT BLUE MARK RED WHT CAVITY TEMP FUSE FAN MOTOR C T FUSE RED RED WHT GRY WHT GRN ORG ORG RY2 RY1 SECONDARY INTERLOCK RELAY T1 1 2 POWER ...

Страница 33: ...15 40 16 39 17 38 18 37 19 36 20 35 21 34 22 33 23 32 24 31 25 30 26 29 27 28 B1 COM N O COM B2 N O VRS1 J1 10G471K C1 0 1µ 50v C2 1000µ 25v C21 10µ 35v AC OVEN LAMP TURNTABLE MOTOR FAN MOTOR AC H MICRO DOOR SENSING SWITCH C3 220µ 10v ZD1 HZ4C3 J11 D21 1SS270A SP1 KEY UNIT LSI UNIT D22 1SS270A J10 a c RY1 RY2 D20 1SS270A D40 1SS270A d 1 3 D3 D4 D1 LD1 LD4 LD3 LD2 D2 R1 560 1 2W Q21 KRC243M 2 4 T1 ...

Страница 34: ...0 S E G11 S E G12 S E G13 S E G14 S E G15 S E G16 S E G17 S E G18 S E G19 S E G20 S E G21 S E G22 COM3 COM2 C0M1 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 S TOP CLE AR 53 52 51 50 41 PR E S E T LE D GND VC INT AN7 AN6 AN5 AN4 BUZZE R VR MICR O D20 OVE N LAMP FAN MOTOR TUR NTABLE MOTOR DOOR S E NS ING S WITCH NOTE IF NOT S PCIFIE D 1 16W 5 C 4 0 1µ 50v C 11 0 01µ 25v C...

Страница 35: ...Printed Wiring Board of Power Unit M R F B 0 3 7 M C R M 2 7 A 9 4 V 0 R 1 1 WH 1 WH 1 LOT BFB QKITPB037MRE0 DIP NO LD4 LD3 LD2 LD1 2 2 D40 D20 1 2 CN B ZD1 R1 C2 C21 D21 Q21 JP3 JP5 JP4 T1 VRS1 2 3 4 1 P S C3 D1 D3 D4 D2 B E J17 J15 J13 J11 J16 J14 J12 J10 JP1 JP2 D22 RY1 RY2 J1 SP1 C1 ...

Страница 36: ...Capacitor 220 uF 10V 1 C21 VCEAB31VW106M J Capacitor 10 uF 35V 1 AA D1 4 RH DZA006PRE0 J Diode 1N4002 4 AD D20 22 VHD1SS270A 1 J Diode 1SS270A 3 AA D40 VHD1SS270A 1 J Diode 1SS270A 1 AA LD1 4 RH PXA002DRZZ M Light emitting diode 4 Q21 VSKRC243M 3 J Transistor KRC243M 1 AB R1 VRD B12HF561J J Resistor 560 ohm 1 2W 1 AA RY1 2 RRLY A114DRE0 J Relay DU12D1 1PR M 2 AN SP1 RALM A019DRZZ M Buzzer 1 T1 RTR...

Страница 37: ...MRF0 M Choke cover 1 AG MISCELLANEOUS 6 1 FW VZB125MRE0 M Stop switch harness 1 AF 6 2 FW VZB192MRE0 M Main wire harnes 1 AU 6 3 TLABBB007MRE0 M Cavity hole cover 1 AA 6 4 FROLPB025MRK0 M Turntable support 1 AN 6 5 NTNT A099WRE0 M Turntable tray 1 AT 6 6 TCAUAB045MRR0 M Monitor caution label 1 AA 6 7 TCAUAB038MRR0 M DHHS Screw caution label 1 AB 6 8 TINSEB297MRK0 M Operation manual 1 AD 6 9 QW QZB...

Страница 38: ...E F G H OVEN AND CABINET PARTS 2 3 4 7 6 7 1 5 4 6 4 8 4 9 6 3 6 5 6 4 2 1 7 5 1 11 4 10 7 2 7 2 7 4 4 3 1 12 1 9 7 3 7 5 7 5 1 8 7 7 4 2 7 4 1 10 1 3 1 4 7 1 1 7 1 7 4 4 7 1 4 1 1 1 1 2 2 2 2 2 2 2 2 2 7 4 7 4 4 12 7 4 6 6 1 6 4 5 1 13 7 8 7 6 7 8 7 6 1 6 4 11 7 9 7 9 ...

Страница 39: ...2 3 6 4 5 1 2 3 A B C D E F G H A B C D E F G H Actual wire harness may be different from illustration 6 9 6 2 6 1 5 1 5 3 5 2 5 5 5 7 5 6 5 4 3 5 3 2 2 3 2 1 3 2 3 3 3 4 3 1 3 6 3 2 3 MISCELLANEOUS DOOR PARTS CONTROL PANEL PARTS ...

Страница 40: ... ACCESSORIES DOOR PROTECTION SHEET PLASTIC BAG PACKING CASE TOP PAD ASSEMBLY INTO THE OVEN CAVITY 6 5 TURNTABLE TRAY 6 8 OPERATION MANUAL BOTTOM PAD ASSEMBLY TRAY HOLDER 6 4 TURNTABLE SUPPORT ON TOP OF THE OVEN Non replaceable items ...

Страница 41: ...39 R 501FK R 501FW NOTES ...

Страница 42: ...40 R 501FK R 501FW NOTES ...

Страница 43: ...41 R 501FK R 501FW NOTES ...

Страница 44: ...002 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 recording orotherwise withoutpriorwrittenpermission of the publisher ...

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