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Sharp R-1505 service manual Sharp Corporation, Over The Range, Microwave Oven, Models, R-1500

Models: R-1506 R-1501 R-1505 R-1500

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SERVICE MANUAL

R-1500

R-1501

R-1505

R-1506

SERVICE MANUAL

		S8123R1500X//
OVER THE RANGE
MICROWAVE OVEN
MODELS	R-1500
	R-1501
	R-1505
	R-1506
In the interest of user-safety the oven should be restored to its original
condition and only parts identical to those specified should be used.
WARNING TO SERVICE PERSONNEL: Microwave ovens con-
tain circuitry capable of producing very high voltage and
current. Contact with the following parts may result in a
severe, possibly fatal, electrical shock. (High Voltage Capaci-
tor, High Voltage Power Transformer, Magnetron, High Volt-
age Rectifier Assembly, High Voltage Harness etc..)
TABLE OF CONTENTS
		Page
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING 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		7
TROUBLESHOOTING GUIDE		11
TEST PROCEDURE		13
TOUCH CONTROL PANEL ASSEMBLY		21
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE		25
PICTORIAL DIAGRAM		33
POWER UNIT CIRCUIT		34
LSI UNIT CIRCUIT		35
PRINTED WIRING BOARD		36
PARTS LIST		37
PACKING AND ACCESSORIES		39

SHARP CORPORATION

This document has been published to be used for after sales service only.

The contents are subject to change without notice.

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Sharp R-1505 service manual Sharp Corporation, Over The Range, Microwave Oven, Models, Table Of Contents, R-1500, R-1501

Contents

SHARP CORPORATION TABLE OF CONTENTSOVER THE RANGE MICROWAVE OVENBEFORE SERVICING After repairing WARNING TO SERVICE PERSONNELDont Touch Danger High Voltage Before ServicingB. Preparation for testing MICROWAVE MEASUREMENT PROCEDUREA. Requirements C. Leakage testDANGER SERVICE MANUALSHARP PLAZA, MAHWAH NEW JERSEY If provided, Vent Hood, Fan assembly, Cooling Fan MotorGENERAL INFORMATION PRODUCT SPECIFICATIONDESCRIPTION GROUNDING INSTRUCTIONSOVEN DIAGRAM 1 2 4 CONTROL PANELCOOK CENTER DEFROST CENTEROPERATION POWER LEVEL P-0 TO P-90 COOKINGDESCRIPTION OF OPERATING SEQUENCE OFF CONDITIONTo Duct VENTILATION METHODS HOT AIR EXHAUSTHood Fan Motor To Duct Hood Intake Duct R Grease Filter CharcoalFigure O-2. Oven Schematic-Cooking Condition Figure O-1. Oven Schematic-Off ConditionNOTE indicates components with potential above R-1500 R-1501 R-1505 R-1506DOOR SENSING AND PRIMARY INTERLOCK SWITCHES TEMPERATURE FUSE MGMONITOR SWITCH DESCRIPTION AND FUNCTION OF COMPONENTSHOOD FAN MOTOR TROUBLESHOOTING GUIDEHOOD LAMP When the testing is completedPOSSIBLE CASE AND DEFECTIVE PARTS CK = Check / RE = ReplacePROCEDURE TEST PROCEDURESA MAGNETRON ASSEMBLY TEST MICROWAVE OUTPUT POWERPROCEDURE TEST PROCEDURESMAGNETRON TEMPERATURE FUSE TEST LETTERPROCEDURE TEST PROCEDURESF PRIMARY INTERLOCK SWITCH TEST G SECONDARY INTERLOCK SYSTEM TEST DOOR SENSING SWITCHPROCEDURE TEST PROCEDURESCOMPONENT TEST LETTERPROCEDURE TEST PROCEDURESL TOUCH CONTROL PANEL ASSEMBLY TEST Before testingPROCEDURE TEST PROCEDURESLETTER COMPONENT TESTPROCEDURE TEST PROCEDURESFOIL PATTERN ON THE PRINTED WIRING BOARD TEST LETTERPROCEDURE TEST PROCEDURESQKITPB035 LETTERDESCRIPTION OF LSI TOUCH CONTROL PANEL ASSEMBLY2 Power Source Circuit 3 Synchronizing Signal CircuitOUT Oven lamp, fan motor and turntable motor driving signal SignalSignal synchronized with commercial power source frequency Internal clock oscillation frequency input settingKey strobe signal SignalKey strobe signal Key strobe signal1 Servicing the touch control panel with power supply of the oven SERVICING5. Other Precautions 2. Shapes of Electronic ComponentsTHE FOLLOWING ADJUSTMENTS OR COMPONENT REPLACEMENT CAN BE PERFORMED COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDUREWITHOUT REMOVING THE OVEN FROM THE WALL HOOD EXHAUST LOUVER REMOVALREMOVAL OF OVEN FROM WALL Two persons recommended to remove the oven POWER TRANSFORMER REMOVALOUTER CASE REMOVAL HOOD FAN MOTOR REMOVALHIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL MAGNETRON REMOVALHOOD FAN THERMAL CUT-OUT REMOVAL THERMAL CUT-OUT CAVITY REMOVALCOOLING FAN MOTOR REMOVAL TEMPERATURE FUSE MAGNETRON REMOVALinstalling because the bracket may be disfigured installationCONTROL PANEL ASSEMBLY, CONTROL UNIT AND KEY UNIT REMOVAL POSITIVE LOCK CONNECTOR NO-CASE TYPE REMOVALTURNTABLE MOTOR AND FOOD LAMP SOCKETS REMOVAL OVEN LAMP AND LAMP SOCKET REMOVALKey unit Key fixing plate After adjustment, check the following DOOR REPLACEMENTFigure C-1. Latch Switch Adjustments DOOR ASSEMBLY REMOVALDOOR FRAME ASSEMBLY DOOR DISASSEMBLYFigure C-3. Door Disassembly CHOKE COVERCONTROL UNIT Figure S-1. Pictorial DiagramHIGH VOLTAGE COMPONENTS 1506VRS1 Figure S-2. Power Unit CircuitUnit Circuit3.LSI FigureSCN-C Figure S-4. Printed Wiring BoardCN-E CN-ANote The parts marked “∆ ” may cause undue microwave exposure PARTS LISTThe parts marked “*” are used in voltage more than ELECTRIC PARTSDOOR PARTS OVEN PARTSMISCELLANEOUS PACKING AND ACCESSORIES HOW TO ORDER REPLACEMENT PARTSSCREWS,NUTS AND WASHERS REF. NOOVEN AND CABINET PARTS DOOR PARTS CONTROL PANEL PARTSMISCELLANEOUS R-1500 R-1501 R-1505 R-1506 COPYRIGHT 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED