Manuals / Sharp / Kitchen Appliance / Microwave Oven

Sharp NOTE indicates components with potential above, R-1500 R-1501 R-1505 R-1506

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

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NOTE: " " indicates components with potential above 250V.

NOTE: " " indicates components with potential above 250V.

CAVITY	MAGNETRON
THERMAL CUT-OUT	TEMPERATURE FUSE

R-1500

R-1501

R-1505

R-1506

SCHEMATIC

NOTE: CONDITION OF OVEN

1.DOOR CLOSED.

2.CLOCK APPEARS ON DISPLAY.

FUSE 20A

		BLK			HOOD FAN
					THERMAL
					CUT OUT
					GRN

120 V AC. GND

60 Hz

WHT

				CONTROL UNIT			N.O.	COM.
							N.O.	COM.
								E2
A5		RY4						DOOR
								DOOR
								SENSING
B5			RY6					SWITCH
		RY3	RY6					E1
		RY3					RY2	E1
	High						RY2
	High						SECONDARY
B7		N.C.					SECONDARY
		N.C.			OVEN LAMP		INTERLOCK
B9	Low				RELAY		RELAY
B9	Low				RY1
	HOOD		RY5		RY1
	CAPACITOR		RY5
	CAPACITOR
HOOD	A1	A3	B1	B3	N.O.	COM.
MOTOR

	HOOD		LAMPOVEN		TURNTABLE MOTOR	FAN MOTOR	MONITOR SWITCH
	LAMP	OL		TTM		FM
HL	HL	OL		TTM		FM
HL	HL

POWER

TRANSFORMER

Manual background MAGNETRON HIGH VOLTAGE

CAPACITOR

0.94∝ F/ AC2300V

HIGH VOLTAGE

RECTIFIER

PRIMARY

INTERLOCK

SWITCH

Figure O-1. Oven Schematic-Off Condition

CAVITY	MAGNETRON
THERMAL CUT-OUT	TEMPERATURE FUSE

SCHEMATIC

NOTE: CONDITION OF OVEN

1.DOOR CLOSED.

2.COOKING TIME PROGRAMMED.

3.VARIABLE COOKING CONTROL "HIGH".

4."START" BUTTON PRESSED.

FUSE 20A

		BLK		HOOD FAN
				THERMAL
				CUT OUT
				GRN

120 V AC. GND

60 Hz

WHT

				CONTROL UNIT			N.O.	COM.
							N.O.	COM.
								E2
A5		RY4
B5			RY6
		RY3	RY6					E1
		RY3					RY2	E1
	High						RY2
	High						SECONDARY
B7		N.C.					SECONDARY
		N.C.			OVEN LAMP		INTERLOCK
B9	Low				RELAY		RELAY
B9	Low				RY1
	HOOD		RY5		RY1
	CAPACITOR		RY5
	CAPACITOR
HOOD	A1	A3	B1	B3	N.O.	COM.
MOTOR

DOOR SENSING SWITCH

POWER

TRANSFORMER

HIGH VOLTAGE CAPACITOR

0.94∝ F/ AC2300V

MAGNETRON

HOOD

LAMP

HL HL

OL	OVENLAMP	TTM	TURNTABLE MOTOR	FAN MOTOR
OL		TTM		FM

PRIMARY

INTERLOCK

SWITCH

SWITCH

MONITOR

HIGH VOLTAGE RECTIFIER

Figure O-2. Oven Schematic-Cooking Condition

9

Image 11

Sharp R-1506, R-1500, R-1505 NOTE indicates components with potential above, Figure O-1. Oven Schematic-Off Condition

Contents

MICROWAVE OVEN TABLE OF CONTENTSSHARP CORPORATION OVER THE RANGEBEFORE SERVICING Before Servicing WARNING TO SERVICE PERSONNELAfter repairing Dont Touch Danger High VoltageC. Leakage test MICROWAVE MEASUREMENT PROCEDUREB. Preparation for testing A. RequirementsIf provided, Vent Hood, Fan assembly, Cooling Fan Motor SERVICE MANUALDANGER SHARP PLAZA, MAHWAH NEW JERSEYGROUNDING INSTRUCTIONS PRODUCT SPECIFICATIONGENERAL INFORMATION DESCRIPTIONOVEN DIAGRAM DEFROST CENTER CONTROL PANEL1 2 4 COOK CENTEROFF CONDITION POWER LEVEL P-0 TO P-90 COOKINGOPERATION DESCRIPTION OF OPERATING SEQUENCECharcoal VENTILATION METHODS HOT AIR EXHAUSTTo Duct Hood Fan Motor To Duct Hood Intake Duct R Grease FilterR-1500 R-1501 R-1505 R-1506 Figure O-1. Oven Schematic-Off ConditionFigure O-2. Oven Schematic-Cooking Condition NOTE indicates components with potential aboveDESCRIPTION AND FUNCTION OF COMPONENTS TEMPERATURE FUSE MGDOOR SENSING AND PRIMARY INTERLOCK SWITCHES MONITOR SWITCHWhen the testing is completed TROUBLESHOOTING GUIDEHOOD FAN MOTOR HOOD LAMPPOSSIBLE CASE AND DEFECTIVE PARTS CK = Check / RE = ReplaceMICROWAVE OUTPUT POWER TEST PROCEDURESPROCEDURE A MAGNETRON ASSEMBLY TESTLETTER TEST PROCEDURESPROCEDURE MAGNETRON TEMPERATURE FUSE TESTG SECONDARY INTERLOCK SYSTEM TEST DOOR SENSING SWITCH TEST PROCEDURESPROCEDURE F PRIMARY INTERLOCK SWITCH TESTLETTER TEST PROCEDURESPROCEDURE COMPONENT TESTBefore testing TEST PROCEDURESPROCEDURE L TOUCH CONTROL PANEL ASSEMBLY TESTCOMPONENT TEST TEST PROCEDURESPROCEDURE LETTERLETTER TEST PROCEDURESPROCEDURE FOIL PATTERN ON THE PRINTED WIRING BOARD TESTLETTER TEST PROCEDURESPROCEDURE QKITPB0353 Synchronizing Signal Circuit TOUCH CONTROL PANEL ASSEMBLYDESCRIPTION OF LSI 2 Power Source CircuitInternal clock oscillation frequency input setting SignalOUT Oven lamp, fan motor and turntable motor driving signal Signal synchronized with commercial power source frequencyKey strobe signal SignalKey strobe signal Key strobe signal2. Shapes of Electronic Components SERVICING1 Servicing the touch control panel with power supply of the oven 5. Other PrecautionsHOOD EXHAUST LOUVER REMOVAL COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURETHE FOLLOWING ADJUSTMENTS OR COMPONENT REPLACEMENT CAN BE PERFORMED WITHOUT REMOVING THE OVEN FROM THE WALLHOOD FAN MOTOR REMOVAL POWER TRANSFORMER REMOVALREMOVAL OF OVEN FROM WALL Two persons recommended to remove the oven OUTER CASE REMOVALTHERMAL CUT-OUT CAVITY REMOVAL MAGNETRON REMOVALHIGH VOLTAGE RECTIFIER AND HIGH VOLTAGE CAPACITOR REMOVAL HOOD FAN THERMAL CUT-OUT REMOVALinstallation TEMPERATURE FUSE MAGNETRON REMOVALCOOLING FAN MOTOR REMOVAL installing because the bracket may be disfiguredOVEN LAMP AND LAMP SOCKET REMOVAL POSITIVE LOCK CONNECTOR NO-CASE TYPE REMOVALCONTROL PANEL ASSEMBLY, CONTROL UNIT AND KEY UNIT REMOVAL TURNTABLE MOTOR AND FOOD LAMP SOCKETS REMOVALKey unit Key fixing plate DOOR ASSEMBLY REMOVAL DOOR REPLACEMENTAfter adjustment, check the following Figure C-1. Latch Switch AdjustmentsCHOKE COVER DOOR DISASSEMBLYDOOR FRAME ASSEMBLY Figure C-3. Door Disassembly1506 Figure S-1. Pictorial DiagramCONTROL UNIT HIGH VOLTAGE COMPONENTSVRS1 Figure S-2. Power Unit CircuitFigureS CircuitUnit 3.LSICN-A Figure S-4. Printed Wiring BoardCN-C CN-EELECTRIC PARTS PARTS LISTNote The parts marked “∆ ” may cause undue microwave exposure The parts marked “*” are used in voltage more thanMISCELLANEOUS OVEN PARTSDOOR PARTS REF. NO HOW TO ORDER REPLACEMENT PARTSPACKING AND ACCESSORIES SCREWS,NUTS AND WASHERSOVEN AND CABINET PARTS MISCELLANEOUS CONTROL PANEL PARTSDOOR PARTS R-1500 R-1501 R-1505 R-1506 COPYRIGHT 2001 BY SHARP CORPORATION ALL RIGHTS RESERVED