Related Manuals for Amana AMV4204AAB
Summary of Contents for Amana AMV4204AAB
- Page 1 Microwave Oven Service Manual AMV4204AAB AMV4204AAQ AMV4204AAW CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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Page 2: Warning To Service Technicians
CAUTION WARNING TO SERVICE TECHNICIANS 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;... -
Page 3: Table Of Contents
FOREWORD Read this Manual carefully.Failure to adhere to or observe the information in this Manual may result in exposing yourself to the Microwave Energy normally contained within the oven cavity. MODEL AMV4204AAB AMV4204AAQ AMV4204AAW TABLE OF CONTENTS (Page) SAFETY PRECAUTIONS ........................Inside front page SPECIFICATIONS .............................. -
Page 4: Specifications
SPECIFICATIONS Rated Power Consumption ........1700W maximum (Microwave oven+Cook top lamps+Ventilation fan) Microwave Output ..........1150W (IEC 60705) Frequency ............2,450 MHz ±50 MHz Power Supply .............120 VAC,60 Hz Rated Current ............14.5 Amp.(Microwave oven+Cook top lamps+Ventilation fan) Magnetron Cooling ..........Forced Air Cooling Rectification ............Rectification Voltage Double Half-Wave Door Sealing ............Choke System Safety Devices ...........Magnetron Thermostat: Open at 150 °C ±5 °C Close at 0 °C ±5 °C... -
Page 5: Cautions
CAUTIONS Unlike other appliances,the microwave oven is MICROWAVE RADIATION high-voltage and high-current equipment. Personnel should not be exposed to the Though it is free from danger in ordinary use, microwave energy which may radiate from the extreme care should be taken during repair. magnetron or other microwave generating device if it is improperly used or connection. -
Page 6: Installations
INSTALLATIONS BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY. PRECAUTIONS ON INSTALLATION A. Plug the power supply cord into a 120V AC,60Hz, single-phase power source with a capacity of at least 20 amperes. B. Avoid placing the unit in a location where there is direct heat or splashing water. -
Page 7: Operating Instructions
OPERATING INSTRUCTIONS CONTROL PANEL... -
Page 8: Control Panel Instructions
CONTROL PANEL INSTRUCTIONS 1. DISPLAY: The Display includes a clock and indicators 15. COOK TIME: Touch this pad to to set a cooking time. to tell you time of day, cooking time setting and 16. CONTROL SETUP: Touch this pad to change the cooking functions selected. -
Page 9: Overall Circuit Diagram
OVERALL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM (I) *Check the Model No. -
Page 10: Schematic Diagram (Ii)
SCHEMATIC DIAGRAM (II) *Check the Model No. (ADD Noise filter) -
Page 11: Matrix Circuit For Touch Key Board
MATRIX CIRCUIT FOR TOUCH KEY BOARD KEY MATRIX... -
Page 12: General Information For Service
GENERAL INFORMATION FOR SERVICE GENERAL PRECAUTIONS IN USE FEATURES AND SPECIFICATIONS FEATURES A. Never operate the unit when it is empty. A. The safety systems incorporated in this model are: Operating the oven with no load may shorten the (1) Primary interlock switch life of the magnetron.Whenever cooking dry foods (2) Secondary interlock switch (dried fish,bread,etc.)or a small amount of food,... -
Page 13: Service Information
SERVICE INFORMATION PRECAUTIONS AND REPAIR SERVICE TIPS PRELIMINARY (3) Do not operate the unit until it is completely repaired,if any of the following conditions exist. The unit must not be operated. A. SINCE NEARLY 4000 VOLTS EXISTS IN SOME (a) The door does not close firmly. CIRCUITS OF THIS UNIT REPAIRS SHOULD BE (b) The hinge is broken. -
Page 14: Microwave Leakage Test
MICROWAVE LEAKAGE TEST CAUTIONS EQUIPMENT- • Be sure to check microwave leakage prior to • TESTER ((VOLTS-DC,AC,Ohmmeter) servicing the oven if the oven is operative prior to • Microwave survey meter servicing. - Holaday HI-1500 • The service personnel should inform the HI-1501 manufacture importer, or assembler of any certified - Narda... -
Page 15: Power Output Measurement
MEASUREMENT WITH THE OUTER CASE NOTE WHEN MEASURING REMOVED (1) Do not exceed meter full scale deflection. (2) The test probe must be removed no faster than (1) When you replace the magnetron,measure for 1 inch/sec (2.5cm/sec)along the shaded area, microwave energy leakage before the outer case otherwise a false reading may result. -
Page 16: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS IMPORTANT NOTES: (4) Remove 5 screws securing the circuit board. UNIT MUST BE DISCONNECTED FROM ELEC- TRICAL OUTLET WHEN MAKING REPAIRS,RE- PLACEMENTS,ADJUSTMENTS AND CONTIN- UITY CHECKS. WHEN RECONNECTING THE WIRE LEADS TO Circuit Board ANY PART,MAKE SURE THE WIRING CONNE- CTIONS AND LEAD COLORS ARE CORRECTLY MATCHED ACCORDING TO THE OVERALL CIR- CUIT DIAGRAM.(ESPECIALLY SWITCHES AND... - Page 17 HOW TO REMOVE THE F.P.C. CONNECTOR HOW TO INSERT THE F.P.C. CONNECTOR Follow the steps below as illustrated in Figures 4 Follow the steps below as illustrated in Figures 6 and 5 to remove the F.P.C.connector. and 7 to insert the F.P.C.connector. (1) Insert the F.P.C.connector into the terminal socket securely with the fingers.
- Page 18 B. REMOVING THE OUT CASE(Figure 8) (1) Remove the vent grille by removing two screws securing it to the out case. (2) Remove two screws securing it to the air duct. (3) Remove the mounting plate by turning the screws (1 or 2 screws)securing it to the out case.
- Page 19 C REMOVING THE DOOR INTERLOCK SWITCHES (Figures 9,10) (1) Disconnect the wire leads from the interlock switches. (2) Remove two screws securing the Latch Board. (3) Make necessary replacements and check microwave energy leakage according to “ADJUSTMENT PROCEDURES ” on page 7-11. Latch Board Primary Latch Board...
- Page 20 D. REMOVING MAGNETRON • After replacing the magnetron,check for microwave energy leakage with a survey meter Check (Figures 11 Through 12) microwave energy leakage must be below the limit (1) Remove the vent grille by loosening two screws. of 5 mW/cm 2 .(All service adjustments should be (Figure 11) made for minimum microwave energy leakage (2) Remove the outcase.See page 7-6.
- Page 21 F. REMOVING DOOR (Figure 15) H. ASSEMBLING DOOR (1) Remove the vent grille by two screws securing it to (1) When mounting the door assembly to the oven the outcase loosening. assembly,be sure to adjust the door assembly (2) Lift up and draw the door. parallel to the chassis.Also adjust so the door has no play between the inner door surface and oven frame NOTES:...
- Page 22 (3) Carefully pull the ventilation motor ASS'Y out ofthe J. REMOVING THE TURNTABLE MOTOR microwave oven.(See Figure 18-b) (1) Remove the turntable. (2) Remove the turntable shaft VERY CAREFULLY with a slotted screwdriver. (Figure 19) (3) Remove the base plate by removing 8 screws securing it to the oven cavity.(Figure 20) (4) Disconnect the leadwire from the turntable motor terminals.
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Page 23: Interlock System
INTERLOCK SYSTEM INTERLOCK MECHANISM The door lock mechanism is a device which has been specially designed to eliminate completely microwave activity when the door is opened during cooking and thus to prevent the danger resulting from the microwave leakage. ADJUSTMENT PROCEDURES CHECK THE DOOR LATCH AND SWITCH To avoid possible exposure to microwave energy CLOSING. - Page 24 TEST THE LATCH AND SWITCH SEQUENCE (7) When you achieve the proper sequence of switches in Steps 5 and 6,tighten the latch board screws at that point. (5) Open the oven door slowly.Watch the door latch, the Secondary Switch.Release Rod and Lever TEST THE MICROWAVE ENERGY LEAKAGE on the switches to make sure they are zero to the body of the switches in the following sequence:...
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Page 25: Interlock Continuity Test
INTERLOCK CONTINUITY TEST A. PRIMARY INTERLOCK SWITCH TEST B.S ECONDARY INTERLOCK SWITCH TEST When the door is opened slowly,an audible click Disconnect the wire lead from the secondary should be heard at the same time or successively switch. at intervals and the latches should activate the Connect the ohmmeter leads to the common switches with an audible click (COM)and normally open (NO)terminals of the... -
Page 26: Test And Checkout Procedures And Troubleshooting
TEST AND CHECKOUT PRECEDURES AND TROUBLESHOOTING CAUTIONS 1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASE FROM THE UNIT.PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD WIRES FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. 2. - Page 27 COMPONENTS TEST RESULTS 1. Remove wire leads. CAPACITOR 2. Measure resistance. (ohm meter scale: Rx1000) • Terminal to terminal Normal: Momently indicates several ohm, and then gradually returns to infinite • Terminal to case Normal: Infinite. 1. Measure continuity. Forward. Normal:Continuity.
- Page 28 COMPONENTS TEST RESULTS 1. Remove wire leads. Normal: VENTILATION MOTOR 2. Measure resistance. (ohm meter scale: Rx1) High speed: Approximately High speed: Blue and Black wire 49 to 69 ohms Low speed: Blue and White wire Low speed: Approximately 97 to 117 ohms Normal: Approximately 1.
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Page 29: B.checkout Procedures
B. CHECKOUT PROCEDURES (1) CHECKOUT PROCEDURES FOR FUSE BLOWING CAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE. PROBLEMS CAUSES Fuse blows immediately after the door is closed. Improper operation of the primary interlock,secondary Fuse blows immediately after interlock switches and/or the interlock monitor switch. the door is opened. - Page 30 (2)CHECKOUT PROCEDURES FOR RELAY. -PROBLEM (A)- -PROBLEM (A)-- FAN motor turns on without touching START key Oven lamp turns on without touching START key when the door is closed. when the door is closed. Remove the mate connector of I/O Remove the mate connector of I/O GOOD GOOD...
- Page 31 (3) CHECKOUT PROCEDURES FOR CIRCUIT BOARD The following symptoms indicate a defective circuit 5) Some segments of one or more digits do not light board. up,or they continue to light up,or segments light 1) Check the input current.If the input current is more when they should not.
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Page 36: Exploded View
#EV# EXPLODED VIEW DOOR PARTS Model: AMV4204AAB Serial Number ldentification AMV4204AAQ (Figure Check First & Second) AMV4204AAW ex) 1 0 1005 1004 1002 1000 1011 1008 1003 W150 1007 1006 W109 1009... -
Page 37: Controller Parts
#EV# CONTROLLER PARTS 2004 2006 2381 2008 2002 W130 2000 2009 * Check the Serial No. -
Page 38: Oven Cavity Parts
#EV# OVEN CAVITY PARTS For Model 3010 W142 W108 AMV4204AAB For Model AMV4204AAQ 3031 W138 AMV4204AAW W109 3001 3024 3029 3036 3028 5038 6000 3037 3014 3018 3032 3011 W121 3025 3026... -
Page 39: Latch Board Parts
#EV# LATCH BOARD PARTS 4000 W111 4002 4001 4003 4004 4002... - Page 40 #EV# INTERIOR PARTS (I) 5009 3002 W101 3007 5023 5000 5002 3008 5018 5049 3012 W101 3034 5008 5058 5024 W109 5043 3009 5044 W105 5051 3004 W101 W109...
- Page 41 #EV# INTERIOR PARTS (II - I) Check the rating label of Model Serial No. and order SVC parts according to the Serial No. 3027 W110 W136 W109 5016 5012 5001 * Check the Serial No. 5017 5412 5006 5045 5010 W109 5015 5038...
- Page 42 #EV# INTERIOR PARTS (II - II) Check the rating label of Model Serial No. and order SVC parts according to the Serial No. 3027 W110 W109 5016 5012 5001 * Check the Serial No. 5041 5412 5006 5045 5010 W109 5015 5038 SPECIAL PARTS...
- Page 43 #EV# INSTALLATION PARTS 6011 6008 6010 6009 VINYL...
- Page 44 P/NO : 3828W5S3657 Printed in Korea...