Manual de instrucciones de Sharp R-1482

Manual de instrucciones del aparato Sharp R-1482

Aparato: Sharp R-1482
Categoría: Microondas
Fabricante: Sharp
Tamaño: 0.88 MB
Fecha de añadido: 12/12/2013
Número de páginas: 44
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Resúmenes

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Resúmenes de contenidos
Resumen del contenido incluido en la página 1

POWER KITCHEN TIMER MINUTE
LEVEL CLOCK PLUS
TURNTABLE STOP START
ON/OFF CLEAR TOUCH ON
WORK NIGHT FAN
LIGHT LIGHT HI/LO
BREAKFAST
SNACKS &
REHEAT
COMPU COOK
12 3 4 5
67 8 9 0
1 Coffee/tea
2 Roll/muffin, fresh
CUSTOM HELP 3 Roll/muffin, frozen
4 Hot cereal
5 Scrambled eggs
1 Dinner plate
2 Pasta/casserole
POPCORN 3 Frozen entree
4 Frozen snack
5 Pizza, slice
1 Baked potatoes 2 Fresh vegetables
COMPU DEFROST 3 Frozen vegetables
4 Rice
5 Ground meat
R-1480
R-1481
R-1482
SERVI

Resumen del contenido incluido en la página 2

R-1480 R-1481 R-1482 PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening

Resumen del contenido incluido en la página 3

R-1480 R-1481 R-1482 WARNING TO SERVICE PERSONNEL Microwave ovens contain circuitry capable of pro- ducing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (Example) High Voltage Capacitor, High Voltage Power Trans- former, Magnetron, High Voltage Rectifier Assem- bly, High Voltage Harness etc.. Read the Service Manual carefully and follow all instructions. Don't Touch ! Danger High Voltage When the testing is completed, Bef

Resumen del contenido incluido en la página 4

R-1480 R-1481 R-1482 MICROWAVE MEASUREMENT PROCEDURE A. Requirements: 1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven 2 should not exceed 1mW/cm at any point 5cm or more from the external surface of the oven, measured prior to acquisition 2 by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm at any point 5cm or more from the external surface of the oven. 2) Safety interlock switches Primary interlock

Resumen del contenido incluido en la página 5

R-1480 R-1481 R-1482 SERVICE MANUAL PRODUCT DESCRIPTION OVER THE RANGE MICROWAVE OVEN R-1480 / R-1481 / R-1482 GENERAL INFORMATION FOREWORD This Manual has been prepared to provide Sharp Electronics Corp. OPERATION Service Personnel with Operation and Service Information for the SHARP OVER THE RANGE MICROWAVE OVEN, R-1480, R-1481, R-1482. TROUBLESHOOTING GUIDE AND It is recommended that service personnel carefully study the entire TEST PROCEDURE text of this manual so that they will be qualifie

Resumen del contenido incluido en la página 6

R-1480 R-1481 R-1482 PRODUCT SPECIFICATION ITEM DESCRIPTION Power Requirements 120 Volts / 14.3 Amperes 60 Hertz Single phase, 3 wire grounded Power Output 950 watts (IEC-705 TEST PROCEDURE) Operating frequency of 2450MHz Convection Power Output 1700 watts Case Dimensions Width 29-15/16" Height 16-3/8" Depth 15- 1/4" (Not including the door handle) Cooking Cavity Dimensions Width 20-1/4" Height 8-3/16" 1.4 Cubic Feet Depth 14-1/2" Hood lamp 2 bulbs, 30W x 2, Incandescent light bulbs Hood fan

Resumen del contenido incluido en la página 7

R-1480 R-1481 R-1482 Electrical Requirements The oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THE GROUNDING PIN FROM THE PLUG. The power supply cord and plug must be connected to a separate 120 Volt AC, 60 Hz, 15 Amp. or more branch circuit, using a grounded receptacle. The receptacle should be located inside the cabinet directly above the Microwave Oven/Hood system mounting location. 3-Pronged Plug Grounded Receptacle Box Grounding Pin 3-Pronged

Resumen del contenido incluido en la página 8

R-1480 R-1481 R-1482 CONTROL PANEL MIX CONV COOK LBS KG TURNTABLE OFF HELP 1 Coffee/tea 2 Roll/muffin, fresh CUSTOM HELP BREAKFAST 3 Roll/muffin, frozen 4 Hot cereal 5 Scrambled eggs 1 Dinner plate 2 Pasta/casserole SNACKS & POPCORN 3 Frozen entree REHEAT 4 Frozen snack 5 Pizza, slice 1 Baked potatoes 2 Fresh vegetables COMPU DEFROST COMPU COOK 3 Frozen vegetables 4 Rice 5 Ground meat 12 3 4 5 67 8 9 0 POWER KITCHEN TIMER MINUTE LEVEL CLOCK PLUS TURNTABLE STOP START ON/OFF

Resumen del contenido incluido en la página 9

R-1480 R-1481 R-1482 RELAY CONNECTED COMPONENTS VARI-MODE ON TIME OFF TIME RY1 Oven lamp / Fan motor / Stirrer motor Power 10(P-HI) 32 sec. 0 sec. (100% power) RY2 Power transformer Power 9(P-90) 30 sec. 2 sec. RY3 Turntable motor (approx. 90% power) RY4 Hood fan motor Power 8(P-80) 26 sec. 6 sec. (approx. 80% power) 2. 120 volts A.C. is supplied to the primary winding of the Power 7(P-70) 24 sec. 8 sec. power transformer and is converted to about 3.3 volts (approx. 70% power) A.C. output on the

Resumen del contenido incluido en la página 10

R-1480 R-1481 R-1482 VENTILATION METHODS HOT AIR EXHAUST 1. VERTICAL VENTING For this venting method, hot air rising from the conventional range below is drawn in by the hood fan motor through the grease filters at the right and left sides of the base cover, up through the right and left sides of the oven cavity, then discharged vertically at rear center top of the oven, into the customer's vent system. _: AIR FLOW TO DUCT TO DUCT HOOD FAN MOTOR HOOD INTAKE DUCT GREASE FILTER 2. HORIZO

Resumen del contenido incluido en la página 11

R-1480 R-1481 R-1482 SCHEMATIC NOTE: CONDITION OF OVEN 1. DOOR CLOSED CAVITY MAGNETRON 2. CLOCK APPEARS ON DISPLAY THERMAL CUT-OUT TEMPERATURE FUSE CONTROL UNIT COM. N.O. FUSE 20A B7 RY4 POWER TRANSFORMER B5 RY5 HOOD FAN E1 THERMAL High CUT OUT B3 N.C. GRN DOOR SENSING B1 Low SWITCH HOOD E2 GND 120 V AC. CAPACITOR 60 Hz RY3 RY1 RY2 HOOD HIGH VOLTAGE A1 A3 B9 A7 A5 N.O. COM. MOTOR CAPACITOR 0.94μF TTM HOOD LAMP OL HL HL HIGH VOLTAGE FM STM RECTIFIER SECONDARY INTERLOCK SWITC

Resumen del contenido incluido en la página 12

R-1480 R-1481 R-1482 DESCRIPTION AND FUNCTION OF COMPONENTS DOOR OPEN MECHANISM CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE TEST THE DOOR SENSING SWITCH, The door is opened by pulling the door handle, refer to the PRIMARY INTERLOCK RELAY (RY2), SEC- Figure D-1. ONDARY INTERLOCK SWITCH AND MONI- Latch Hook TOR SWITCH FOR PROPER OPERATION. (REFER TO CHAPTER "TEST PROCEDURE"). NOTE: MONITOR FUSE AND SWITCH ARE REPLACED Latch AS AN ASSEMBLY Heads Door TEMPERATURE FUSE (MG) Sensing Switch The

Resumen del contenido incluido en la página 13

R-1480 R-1481 R-1482 This air is then expelled either vertically or horizontally HOOD LAMP through the customer supplied duct system, or discharged The hood lamps are mounted at the hood lamp angle on the back into the kitchen. base cover. The hood lamps can be turned off and on by touching the WORK LIGHT pad or the NIGHT LIGHT pad. STIRRER MOTOR And also the brightness can be varied to high or low by The stirrer motor drives the stirrer fan to stir the microwave touching the WORK LIGHT pad or t

Resumen del contenido incluido en la página 14

R-1480 R-1481 R-1482 CK = Check / RE = Replace CK LOW VOLTAGE CK NO POWER AT OUTLET RE SHORTED IN POWER CORD CK OPENED OR SHORTED WIRING CK HOOD MOTOR CAPACITOR RE HOOD LAMP OR SOCKET CK TURNTABLE OFF CONDITION RE STIRRER MOTOR RE TURNTABLE MOTOR RE FAN MOTOR RE OVEN LAMP OR SOCKET P FOIL PATERN ON P.W.B. O COMPU DEFROST N RELAY (RY-5) N RELAY (RY-4) N RELAY (RY-3) N RELAY (RY-2) N RELAY (RY-1) M KEY UNIT L CONTROL UNIT K H

Resumen del contenido incluido en la página 15

R-1480 R-1481 R-1482 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER A MAGNETRON 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. To test for an open filament, isolate the magnetron from the high voltage circuit. A continuity check across the magnetron filament leads should indicate less than 1 ohm. 5. To test for a shorted magnetron, connect the ohmmeter leads between the magnetron filament

Resumen del contenido incluido en la página 16

R-1480 R-1481 R-1482 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER (HIGH VOLTAGES ARE PRESENT AT THE HIGH VOLTAGE TERMINAL, SO DO NOT ATTEMPT TO MEASURE THE FILAMENT AND HIGH VOLTAGE.) C HIGH VOLTAGE RECTIFIER 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. Isolate the rectifier from the circuit. Using the highest ohm scale of the meter, read the resistance across the terminals and observe, revers

Resumen del contenido incluido en la página 17

R-1480 R-1481 R-1482 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 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. CAUTION: IF THE THERMAL CUT-OUT OR TEMPERATURE FUSE INDICATES AN OPEN CIRCUIT AT ROOM TEMPERATURE, REPLACE THERMAL CUT-OUT OR TEMPERATURE FUSE. F SECONDARY INTERLOCK SWITCH TEST 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3.

Resumen del contenido incluido en la página 18

R-1480 R-1481 R-1482 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER with the door opened (in this condition the plunger of the monitor switch is pushed in), the meter should indicate an open circuit. If improper operation is indicated, the switch may be defective. After testing the monitor switch, reconnect the wire lead to the monitor switch (COM) terminal and check the continuity of the monitor circuit. 5. Reconnect all leads removed from components during testing. 6. Reinstall the outer case

Resumen del contenido incluido en la página 19

R-1480 R-1481 R-1482 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER Resistance between; YLW BLU BLU (1) AND YLW (4) = 0Ω (Shorted) 4 1 BLK (2) AND YLW (4) = 32Ω HOOD FAN BLU (1) AND BLK (2) = 32Ω CAPACITOR BLK (2) AND WHT (3) = 20Ω 32 Ω WHT (3) AND RED (5) = 45Ω BLU BLK WHT 45 Ω 20 Ω 5 2 123 BLK RED 6-PIN CONNECTOR 3 OF HOOD FAN MOTOR WHT 45 YLW RED 5. Reconnect all leads removed from components during testing. 6. Reinstall the outer case (cabinet). 7. Reconnect the power supply cord after the

Resumen del contenido incluido en la página 20

R-1480 R-1481 R-1482 TEST PROCEDURES PROCEDURE COMPONENT TEST LETTER 7) Reconnect the power supply cord after the outer case is installed. 8) Run the oven and check all functions. 2. Control Unit. The following symptoms indicate a defective control unit. Before replacing the control unit, perform the Key unit test (Procedure M) to determine if control unit is faulty. 2-1 In connection with pads. a) When touching the pads, a certain group of pads do not produce a signal. b) When touching the


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