Sharp R-508HS Service Manual Download Page 21 | Manualshive

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R-508HS

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Figure S-5 . Printed Wiring Board of Power Unit

RY1

RY
2

E C B

E C B

E C B

VRS1

L1

D7

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LED

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D31

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Summary of Contents for R-508HS

Page 1: ...MENT PROCEDURE 2 FOREWORD AND WARNING 3 PRODUCT SPECIFICATIONS 4 GENERAL INFORMATION 4 OPERATION 6 TESTPROCEDURE 7 TOUCHCONTROLPANEL 8 COMPONENTREPLACEMENTANDADJUSTMENTPROCEDURE 12 PICTORIALDIAGRAM 17 CONTROLUNITCIRCUIT 18 PRINTEDWIRINGBOARD 19 PARTS LIST 20 PACKING AND ACCESSORIES 24 S83M216R508HE R 508HS MICROWAVEOVEN MODEL SHARP ELECTRONCS CORPORATION This document has been published to be used...

Page 2: ...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 Microwave Me...

Page 3: ...tor 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 Reconnect t...

Page 4: ...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 Cooking ...

Page 5: ...formed 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 Power Transformer Magne...

Page 6: ...sponsibilityandobligationofthecustomertocontact SPECIFICATION ITEM DESCRIPTION PowerRequirements 120 Volts 14 3 Amperes 1700 watts 60 Hertz Single phase 3 wire grounded PowerOutput 1200 watts IEC 705 TEST PROCEDURE 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 C...

Page 7: ...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 11 P...

Page 8: ...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 sequence...

Page 9: ...motor RY2 Approx 12 0V D C Power transformer 8 Disconnect the power supply cord and then remove outer case 9 Open the door and block it open 10 Discharge high voltage capacitor 11 Reconnect all leads removed from components during testing 12 Re install the outer case cabinet 13 Reconnect the power supply cord after the outer case is installed 14 Run the oven and check all functions L COMPU DEFROST...

Page 10: ...rcuit Acircuittodrivethebacklight LightemittingdiodesLD1 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 Theprincipalfunctionsoftheseunitsandthesignalscommu nicated among them are explained below KeyUnit Thekeyunitiscomposedofamatrix signalsgeneratedinth...

Page 11: ...form voltage is delivered to the RY1 driving circuit and RY2 control circuit 17 P51 OUT Terminal not used 18 P50 OUT Magnetron high voltage circuit driving signal To turn on and off the cook relay RY2 The signalsholds L levelduringmicrowavecook 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 leve...

Page 12: ...to P70 P71 P41 P45 P47 and AN3 terminal while one of G7 line keys on key matrix is touched 35 P25 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P70 P71 P41 P45 P47 and AN3 terminal while one of G6 line keys on key matrix is touched 36 P24 OUT Key strobe signal Signal applied to touch key section A pulse signal is input to P70 P71 P41 P45 P47 and AN3 terminal ...

Page 13: ...G 20 SEG10 62 SEG 10 SEG21 51 SEG 21 73 VCC IN Power source voltage GND 0V 74 VREF IN A D converter power source voltage GND 0V The power source voltage to drive the A D converter Connected to GND 75 AVSS IN A D converter power source voltage 5 0V The power source voltage to drive the A D converter 76 COM3 OUT Terminal not used 77 COM2 OUT Common data signal Connected to LCD signal COM1 78 COM1 OU...

Page 14: ...to the control panel frame adjusttheupperedgeandrightedgeofthe key unit to the correct position of control panel frame 3 Placethekeyunitfirmlytothecontrolpanelframe by rubbing with soft cloth not to scratch GRAPHIC SHEET AND MEMBRANE SWITCH REPLACEMENT 1 Disconnect the power supply cord and remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Pull the wire leads...

Page 15: ... that the LCD sheet and the liquid crystal display in good condition 3 Remove the backing paper from the new graphic sheet 4 Adjust the upper edge and right edge of the graphic sheet to the large depression on the surface of the control panel frame 5 Attach the graphic sheet to the control panel frame by rubbing with a soft cloth not to scratch 6 Reinstall the control panel frame to the oven NOTE ...

Page 16: ...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 afte...

Page 17: ...rew 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 face...

Page 18: ...n 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 plate 4 Checkformicrowaveleakagearounddoorwithanapproved microw...

Page 19: ...cted 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 PNK GRN GRN to Oven cavity WHT WHT WHT WHT 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 UNIT H N NO...

Page 20: ...SS P27 P26 P25 P24 P23 P22 P21 P20 VL3 COM0 COM1 COM2 COM3 AVSS VREF VCC SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 CST4 00MGW R67 15K R66 15K R65 15K R64 15K R63 15K R62 15K R61 15K R60 15K R80 1M R110 15K G F POWER LEVEL CLEAR KEY UNIT DEFROST MINUTE PLUS REHEAT R78 R77 R76 R75 R74 C64 C63 C62 C61 C60 R68 15K R69 15K R70 15K R71 15K R72 15K P70 P71 P41 P45 G CPU UNIT R41 15K R40 4 7K C4 00 01uF 25V...

Page 21: ... F G H Figure S 5 Printed Wiring Board of Power Unit RY1 RY2 E C B E C B E C B VRS1 L1 D7 D3 P S D4 C2 D1 C1 D2 R8 R7 R2 R4 Q3 Q4 SP1 T1 D6 DZ1 WH 2 WH 2 LED Q2 D5 D8 D30 1 2 J1 J6 J2 J5 R5 C4 C5 CN B CN F 1 2 3 C10 DIP CHIP SIDE R90 J3 D31 R3 R6 E B 1 1 2 2 Q1 ...

Page 22: ... 1 GPNLCB041 KIT M Control unit assy 1 AZ 3 2 HPNLFB008MRF0 M Control panel sub assembly 1 AQ 3 3 PSHEPB128MRR0 M Graphic sheet 1 AF 3 4 FDECAB046MRK0 M Open button assy 1 AF 3 5 MSPRCA045WRE0 M Open button spring 1 AA 3 6 XEPSD30P06XS0 M Screw 3mm x 6mm 5 AB OVEN PARTS 4 1 LBNDKB007MRP0 M H V Capacitor band 1 AB 4 2 LANGTB059MRP0 M Chassis support 1 AG 4 3 PHOK B018MRF0 M Latch hook 1 AF 4 4 MLEV...

Page 23: ...ain wire harnes 1 AU 6 3 FROLPB025MRK0 M Turntable support 1 AN 6 4 NTNT A099WRE0 M Turntable tray 1 AT 6 5 TCAUAB050MRR0 M Monitor caution label 1 AA 6 6 TCAUAB038MRR0 M DHHS Screw caution label 1 AB 6 7 TINSEB361MRK0 M Operation manual 1 AD 6 8 QW QZB016MRE0 M High voltage wire A 1 AC SCREWS NUTSANDWASHERS 7 1 LX BZA041WRE0 M Special screw 5 AA 7 2 LX CZ0052WRE0 M Special screw 2 AA 7 3 XHTSD40P...

Page 24: ... D E F G H OVEN AND CABINET PARTS 2 3 4 7 6 6 1 4 4 6 4 8 4 9 6 4 6 3 2 1 7 5 1 9 4 10 7 2 7 2 7 4 4 3 1 10 1 7 7 3 7 6 7 5 7 6 4 2 7 4 1 8 7 1 1 6 1 6 4 4 7 1 4 1 1 1 1 2 2 2 2 2 2 2 2 2 7 4 7 4 4 11 7 4 6 5 1 5 1 11 7 4 7 7 7 4 7 7 1 5 7 8 7 8 1 3 4 5 7 4 ...

Page 25: ...H A B C D E F G H CONTROL PANEL PARTS Actual wire harness may be different from illustration 6 8 6 2 6 1 3 3 3 1 3 6 3 2 3 5 3 4 5 4 5 3 5 2 5 7 5 6 5 5 Items 5 9 5 10 are not included with assembly 5 1 or 5 2 5 8 5 1 5 9 5 10 DOOR PARTS MISCELLANEOUS ...

Page 26: ...ESSORIES DOOR PROTECTION SHEET PLASTIC BAG PACKING CASE TOP PAD ASSEMBLY INTO THE OVEN CAVITY 6 4 TURNTABLE TRAY 6 7 OPERATION MANUAL BOTTOM PAD ASSEMBLY TRAY HOLDER 6 3 TURNTABLE SUPPORT ON TOP OF THE OVEN Non replaceable items ...

Page 27: ...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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