Related Manuals for Kenmore 767.8541000
Summary of Contents for Kenmore 767.8541000
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Page 1: Microwave Oven
TECHNICAL FLASH T.F. 22-480 Department 731A Toronto BASIC SERVICE MANUAL MICROWAVE OVEN MODEL 767.8541000 / 767.8541001 767.8541300 / 767.8541301 767.8541900 / 767.8541901 MARCH, 2005... -
Page 2: Safety Precautions
CAUTION SAFETY PRECAUTIONS 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. TABLE OF CONTENTS (Page) SAFETY PRECAUTIONS ........................Inside front page SPECIFICATIONS.............................. -
Page 4: Specifications
SPECIFICATIONS Rated Power Consumption - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1500W maximum (Microwave oven+Cook top lamps+Ventilation fan) Microwave Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1000W (IEC60705) Adjustable 100W through 1000W, 10 steps Frequency - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2450 MHz ±... -
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: Installation
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 15A or 20A. B. Avoid placing the unit in a location where there is direct heat or splashing water. -
Page 7: Operating Ins
OPERATING INSTRUCTIONS CONTROL PANEL For Model 85410... -
Page 8: Control Panel Instructions
CONTROL PANEL INSTRUCTIONS 1. DISPLAY: The Display includes a clock and indicators to 14. TIME: Touch this pad to set a cooking time. tell you time of day, cooking time settings and cooking 15. POWER: Touch this pad to select a cooking power level. functions selected. -
Page 9: Overall Circuit Diagram
OVERALL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM... -
Page 10: Matrix Circuit For Touch Key Board
MATRIX CIRCUIT FOR TOUCH KEY BOARD... -
Page 11: 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. Operating the oven with no load may shorten the A. The safety systems incorporated in this model are: life of the magnetron. Whenever cooking dry foods (1) Primary interlock switch (dried fish, bread, etc.) or a small amount of food, (2) Secondary interlock switch... -
Page 12: Service Information
SERVICE INFORMATION PRECAUTIONS AND REPAIR SERVICE TIPS PRELIMINARY (3) Do not operate the unit until it is completely A. SINCE NEARLY 2,100 VOLTS EXISTS IN SOME repaired, if any of the following conditions exist. CIRCUITS OF THIS UNIT REPAIRS SHOULD BE The unit must not be operated. -
Page 13: Microwave Leakage Test
MICROWAVE LEAKAGE TEST CAUTIONS MEASURING MICROWAVE ENERGY LEAKAGE • Be sure to check microwave leakage prior to servicing the oven if the oven is operative prior to • Pour 275±15cc of 20±5°C(68±9°F) water in a beaker servicing. which is graduated to 600 cc, and place the beaker •... -
Page 14: 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 15: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS IMPORTANT NOTES: (4) Remove 3 screws securing the circuit board. UNIT MUST BE DISCONNECTED FROM ELEC- TRICAL OUTLET WHEN MAKING REPAIRS, RE- PLACEMENTS, ADJUSTMENTS AND CONTIN- UITY CHECKS. WAIT AT LEAST ONE MINUTE, UNTIL THE HIGH VOLTAGE CAPACITOR IN THE HIGH VOLTAGE POWER SUPPLY HAS FULLY DISCHARGED. - Page 16 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.
- Page 17 B. REMOVING THE OUT CASE(Figure 8) (6) Remove the power cord cover from outcase by removing a screw. (1) Remove the vent grille by removing two screws (7) Remove the power cord to the inner of the out case securing it to the out case. with turning power cord and remove the out case (2) Remove two screws securing it to the front bracket.
- Page 18 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 PROCEDURE” on page 7-12. Latch Board Secondary Interlock Switch...
- Page 19 D. REMOVING MAGNETRON NOTES: • When removing the magnetron, make sure that its (Figures 11 Through 13) dome does not hit any adjacent parts, or it may be (1) Remove vertgrille. damaged. (2) Remove mount all. (3) Remove outcase. • When replacing the magnetron, be sure to install the (4) Discinnect the wireleads.
- Page 20 E. REMOVING STIRRER FAN F. REMOVING DOOR (Figure 16) (Figures 14 and 15) (1) Remove the vent grille by two screws securing it to (1) Remove one rivet ASS'Y securing it to the oven the outcase loosening. upper plate by using knife blade. (2) Lift up and draw the door.
- Page 21 H. ASSEMBLING DOOR (3) Carefully pull the ventilation motor ASS'Y out of the microwave oven. (See Figure 20) (1) When mounting the door assembly to the oven assembly, be sure to adjust the door assembly parallel to the chassis. Also adjust so the door has no play between the inner door surface and oven frame assembly.
- Page 22 J. REMOVING THE TURNTABLE MOTOR (1) Remove the turntable. (2) Remove the turntable shaft VERY CAREFULLY with a slotted screwdriver. (Figure 21) (3) Remove the base plate by removing 6 screws securing it to the oven cavity. (Figure 22) (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 To avoid possible exposure to microwave energy CHECK THE DOOR LATCH AND SWITCH leakage, adjust the door latches and interlock... - Page 24 TEST THE LATCH AND SWITCH SEQUENCE (5) Open the oven door slowly. Watch the door latch, (7) When you achieve the proper sequence of the Secondary Switch. Release Rod and Lever switches in Steps 5 and 6, tighten the latch board on the switches to make sure they are zero to the screws at that point.
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Page 25: Interlock Continuity Test
INTERLOCK CONTINUITY TEST A. PRIMARY INTERLOCK SWITCH TEST B. SECONDARY 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. -
Page 26: Test And Checkout Procedures And Trouble Shooting
TEST AND CHECKOUT PROCEDURES, AND TROUBLE SHOOTING - CAUTIONS - Filament Winding - DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVINGING THE CABINET FROM THE UNIT. PROCEED WITH THE TESTS ONLY AFTER Secondary Winding DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. - Page 27 COMPONENTS TEST PROCEDURES RESULTS Measure the resistance: (1) Terminal to terminal Normal reading: Momentarily indicates several ohms, and then gradually returns to infinite ohms. Ohm- Abnormal reading: meter Indicates continuity or infinite ohms from the beginning. Figure 27-a HIGH-VOLTAGE CAPACITOR (2) Terminal to case Normal readings: Infinite.
- Page 28 COMPONENTS TEST PROCEDURES RESULTS Measure the resistance between terminal When When not pins of connector KEY CONNECTOR. touched touched Resistance NOTE: value Less than More than When reconnecting the FPC connector, 400 ohms 1 mega ohm make sure that the holes on the FPC connector are properly engaged with hooks on the plastic fastener.
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Page 29: Checkout Procedures
COMPONENTS TEST PROCEDURES RESULTS POWER Check for continuity of relay 2 with an LEVEL ohm-meter. (Remove wire leads from relay 2 and 4 sec 18 sec operate the unit.) 6 sec 16 sec Relay 2 8 sec 14 sec 10 sec 12 sec 12 sec 10 sec... - Page 30 (2) CHECKOUT PROCEDURES FOR RELAY. - PROBLEM (A) - T.T. motor and oven lamp turn on without touching START key when the door is closed. Remove the mate connector of I/O GOOD CON from the circuit board. Does the unit still operate? Replace the Defective circuit board...
- Page 31 (3) CHECKOUT PROCEDURES FOR CIRCUIT BOARD The following symptoms indicate a defective circuit 6) Wrong figures appear. board. 7) The figures of all digits. 1) The start function fails to operate but the high 8) Some of the indicators do no flicker light up. voltage Systems, the interlock switches, the door 9) The clock does not keep time properly.
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Page 36: Exploded View
#EV# EXPLODED VIEW DOOR PARTS 13581A 13552A 13536A For Model 13551A 13213A 767.85413 13720D WTT028 14026A 14760A 14890A 14970A 13650A... -
Page 37: Controller Parts
#EV# CONTROLLER PARTS For Model: 767.85410 767.85419 24781M 268711 23551A 24810P WTP018 23572A 23506A For Model: 767.85413 24781M 268711 23551A 24810P WTP018... -
Page 38: Oven Cavity Parts
#EV# OVEN CAVITY PARTS WTT021 34960A WTT028 WTT027 WTT029 For Model 767.85419 33530A WTT027 767.85413 For Model 34810Q WTT029 767.85410 33112U 34930R 35026G 368771 33550L 63303A 63302A 36912C 34890C 34810T WTT010 WTT022 WTT022 35230A... -
Page 39: Latch Board Parts
#EV# LATCH BOARD PARTS 43500A 466001 WSZ085 43501A 466003 466001 44510A... - Page 40 #EV# INTERIOR PARTS(I) WSZ002 33390G 56324A 34370T 56201B 35889A WTT021 WTT021 56170D 33740A WTP015 33052A WTT021 36549S WTP013 WSZ002 53300A 56851D WSZ002 54810C 50CZZH 53300B...
- Page 41 #EV# INTERIOR PARTS(II) 56912B 55231C 53550L 36549V WSZ002 56804A 56201A WTT028 56411A 55262A 50FZZA 56930V 568771 WSZ002 55892A 54930F 53550F 340511...
- Page 42 #EV# INSTALLATION PARTS 63300M 65862D 65862B 63861A VINYL...
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Page 43: Replacement Parts List
REPLACEMENT PARTS LIST For Model: 767.85410 I/C : INTERCHANGEBILITY CODE Mar. 29. 2005 Difference Chart (Part No) Location Part Name Alternate 767.8541000 767.8541001 MANUAL,OWNERS 3828W5A4048 3828W5A8142 MANUAL,SERVICE 3828W5S3674 3828W5S5159 MANUAL,INSTALLATION 3828W5U0348 3828W5U0438 LABEL,COOKING GUIDE 3850W2A233D 3850W2A233G TEMPLATE 4922W5A027A 4922W1A021C CARD,TECHNICAL... - Page 44 Difference Chart (Part No) Location Part Name Alternate 767.8541000 767.8541001 466003 SWITCH,MICRO 3B73361E 6600W1K001C 6600W1K003C 466003 SWITCH,MICRO 3B73361E 6600W1K001C 6600W1K004B 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H004G 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H002H 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H001Q 50FZZA FUSE,DRAWING...
- Page 45 REPLACEMENT PARTS LIST For Model: 767.85413 I/C : INTERCHANGEBILITY CODE Mar. 29. 2005 Difference Chart (Part No) Location Part Name Alternate 767.8541300 767.8541301 MANUAL,OWNERS 3828W5A4048 3828W5A8142 MANUAL,SERVICE 3828W5S3674 3828W5S5159 MANUAL,INSTALLATION 3828W5U0348 3828W5U0438 LABEL,COOKING GUIDE 3850W2A233D 3850W2A233G TEMPLATE 4922W5A027A 4922W1A021C CARD,TECHNICAL 3840W1T004C 3840W1T004F BOX,YELLOW...
- Page 46 Difference Chart (Part No) Location Part Name Alternate 767.8541300 767.8541301 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H004G 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H002H 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H001Q 50FZZA FUSE,DRAWING 3B74133K 3B74133Q 3B74133K 53300A PLATE,BOTTOM 3300W1A052A 3300W1A052B 3300W1A052A 53300B PLATE,BOTTOM 3300W1A003A 3300W1A003D 3300W1A003A...
- Page 47 REPLACEMENT PARTS LIST For Model: 767.85419 I/C : INTERCHANGEBILITY CODE Mar. 29. 2005 Difference Chart (Part No) Location Part Name Alternate 767.8541900 767.8541901 MANUAL,OWNERS 3828W5A4048 3828W5A8142 MANUAL,SERVICE 3828W5S3674 3828W5S5159 MANUAL,INSTALLATION 3828W5U0348 3828W5U0438 LABEL,COOKING GUIDE 3850W2A233D 3850W2A233G TEMPLATE 4922W5A027A 4922W1A021C CARD,TECHNICAL 3840W1T004C 3840W1T004F BOX,YELLOW...
- Page 48 Difference Chart (Part No) Location Part Name Alternate 767.8541900 767.8541901 466003 SWITCH,MICRO 3B73361E 6600W1K001C 6600W1K003C 466003 SWITCH,MICRO 3B73361E 6600W1K001C 6600W1K004B 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H004G 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H002H 50CZZH CAPACITOR,DRAWING[HIGH VOLTAGE] 0CZZW1H004B 0CZZW1H004B 0CZZW1H001Q 50FZZA FUSE,DRAWING 3B74133K 3B74133Q 3B74133K...
- Page 49 P/NO : 3828W5S5159 Printed in Korea...