Sharp R-480J service manual Cn C, ZD1 SP1 VRB RY2, CN a CN D D10, RY1 RY3 TTM, Cn B

Page 35

R-480J

(CN - C)

CN - C

D6 B Q2

ZD1

SP1

- B

8 9

VRB

RY2

QKITPB026MRE0

VRS1

T1 1AC2

OMIF

CN - A

(CN - D)

(D10)

RY1

RY3

TTM

		WH - 1

1	2
1	2
		SH - A
		2

CN - B

Figure S-4. Printed Wiring Board

Image 35

Contents Microwave Oven Model R-480J Table of Contents480J General Important Information Sharp Corporation OSAKA, JapanMicrowave Oven 480JThis Appliance Must be Earthed Product SpecificationsGeneral Information DescriptionTouch Control Panel Appearance ViewVariable Cooking Operation SequenceOFF Condition Microwave Cooking ConditionSensor Instant Reheat Power Output ReductionCooking Sequence Function of Important Components Remember to Check 4R Troubleshooting GuideServicing Remember to Check 3DProblem Test Procedure Possible Cause Defective PartsMicrowave Output Power 1 litre water load Test ProceduresProcedure Component Test Letter Magnetron Test High Voltage Capacitor Test Test Procedures Letter Component TestPower Transformer Test High Voltage Rectifier Assembly TestThermal CUT-OUT Test Procedure Component Test LetterSwitch Test Noise Filter Test Carry OUT 3D ChecksHigh Voltage Fuse Test Touch Control Panel Assembly TestBlown Fuse F10A Carry OUT 3D Checks Relay Test KEY Unit TestChecking the initial sensor cooking condition Carry OUT 3D Checks Steps Occurrence Cause or CorrectionOmif AH Sensor TestSensor Dummy Resistor Circuit Test Procedures LetterTesting Method for AH Sensor AND/OR Control Unit Checking Control UnitSynchronizing Signal Circuit Reset CircuitIndicator Circuit Power Source CircuitLSI Power source voltage GND0V Pin No Signal DescriptionSignal coming from touch key Signal similar to P17Common data signal COM5 Common data signal COM8Common data signal COM7 Common data signal COM6Structure of Absolute Humidity Sensor Absolute Humidity Sensor CircuitServicing of Touch Control Panel Other PrecautionsTouch Control Panel Servicing Shapes of Electronic ComponentsOuter Case Removal Component Replacement and Adjustment ProcedurePower Transformer Removal Turntable Motor Removal Positive Lock Connector NO-CASE Type RemovalHOW to RE-INSTALL the Turntable Motor Cover Magnetron RemovalOven Lamp and Lamp Socket Removal Control Panel Assembly RemovalCPU Unit and Power Unit InstallationSide View Power Supply Cord ReplacementAfter adjustment, check the following Rear ViewView back side of door frame Door ReplacementRE-INSTALL RemovalSealer Film After any service, make sure of the followingInstallation Holaday HI Simpson 380M Preparation for TestingMicrowave Measurement RequirementFigure O-1. Oven Schematic-OFF Condition High Voltage Components Figure S-1. Pictorial DiagramFigure S-2. Power unitl Circuit FigureS3.CPU UnitRY1 RY3 TTM CN CZD1 SP1 VRB RY2 CN a CN D D10Parts List Not replaceable items Packing and AccessoriesMiscellaneous SCREWS, Nuts and Washers84-21 Control Panel Parts Door Parts Miscellaneous Copyright 2004 by Sharp Corporation ALL Rights Reserved