Related Manuals for Kenmore 767. 8933000
Summary of Contents for Kenmore 767. 8933000
- Page 1 TECHNICAL FLASH T.F. 22 478 Department 731A Toronto BASIC SERVICE MANUAL MICROWAVE OVEN MODEL 767. 8933000 767. 8933300 767. 8933900 767. 8933001 767. 8933301 767. 8933901 APRIL, 2003...
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Page 2: Safety Precautions
SAFETY PRECAUTIONS This device is to be serviced only by properly qualified service personnel. Consult the service manual for proper service procedures to assure continued safety operation and for precautions to be taken to avoid possible exposure to excessive microwave energy. PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY... -
Page 3: Table Of Contents
CONTENTS (Page) SAFETY PRECAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Inside front cover SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-1 CAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-1 INSTALLATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1... -
Page 4: Specifications
SPECIFICATIONS MODEL NO. 767.89330 / 767.89333 / 767.89333 Rated Power Consumption 1,500 W Output 1100 W (*IEC60705 Rating standard) Frequency 2,450 MHz Power Supply 120 V AC, 60 Hz Magnetron Cooling Forced Air Cooling Microwave Stirring Turntable Rectification Rectification Voltage Doubler Half-Wave Door Sealing Choke Cover and Choke System Safety Devices... -
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. INSTALLING GROUNDING INSTRUCTIONS 1. Empty the microwave oven and clean inside it with For personal safety, this appliance must be fully a soft, damp cloth. Check for damage such as grounded at all times. -
Page 7: Operating Instructions
OPERATING INSTRUCTIONS FEATURES Oven Front Plate Window Door Screen Door Seal Display Window Control Panel For 767.89333 only Door Open Button Safety Door Lock System Turntable Rotating Ring CONTROL PANEL 1. DISPLAY WINDOW. The Display includes a clock and indicators that tell you time of day, cooking time settings, and cooking functions selected. -
Page 8: Schematic Diagram
SCHEMATIC DIAGRAM... -
Page 9: Circuit Description
CIRCUIT DESCRIPTION • A high voltage of approximately 2100 volts AC is GENERAL DETAILS generated in the secondary of the high voltage • The low voltage transformer supplies the necessary transformer which is increased by the action of the high voltage to the micom controller when power cord is voltage diode and charging of the high voltage plugged in. -
Page 10: Service Information
SERVICE INFORMATION TOOLS AND MEASURING INSTRUMENTS NECESSARY TOOLS NECESSARY MEASURING INSTRUMENTS Tools normally used for TV servicing are sufficient. • TESTER (VOLTS-DC, AC, Ohmmeter) Standard tools are listed below. • Microwave survey meter • Diagonal pliers - Holaday HI-1500 • Long nose pliers HI-1501 •... - Page 11 MEASUREMENT WITH OUTER CASE NOTES WHEN MEASURING REMOVED • Do not exceed meter full scale deflection. • The test probe must be removed no faster than • When you replace the magnetron, measure for 1 inch/sec (2.5 cm/sec) along the shaded area, microwave energy leakage before the outer case is otherwise a false reading may result.
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Page 12: Measurement Of Microwave Power Output
MEASUREMENT OF MICROWAVE POWER OUTPUT • Microwave power output measurement is made with • The microwave power output P in watts is calculated the microwave oven supplied at its rated voltage and from the following formula : operated at its maximum microwave power setting with 4187 x (∆T) a load of (1000±5) g of potable water. - Page 13 D. PCB ASSEMBLY REMOVAL Remove choke cover cap(For model 87030/88030) 1) Remove the control panel assembly from the cavity. (Refer to control panel assembly removal on previous page.) 2) Remove screws which hold the PCB SUB ASS’Y to the control panel. 3) Disconnect the flat cable from the PCB SUB ASS’Y and take off the PCB SUB ASS’Y Control Panel...
- Page 14 F. AIR DUCT ASSEMBLY REMOVAL I. FAN MOTOR ASSEMBLY REMOVAL 1) Discharge the high voltage capacitor. 1) Disconnect the leadwire from lamp and MGT thermostat. 2) Remove the mounting screw to the magnetron. 2) Disconnect the leadwire from fan motor, noise filter and high voltage capacitor.
- Page 15 K. REMOVING THE TURNTABLE MOTOR M. INTERLOCK SYSTEM 1) Remove the glass turntable. 1) INTERLOCK MECHANISM 2) Remove the rotating ring ass’y by hand. The door lock mechanism is a device which has 3) Remove the turntable motor cover. been specially designed to eliminate completely The turntable base cover is easily removed by microwave activity when the door is opened during pinching the six parts with wire cutting pliers.
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Page 16: Interlock Continuity Test
INTERLOCK CONTINUITY TEST WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS. TYPE NO. SZM-V 16-FA-63 OR VP-533A-OF FOR PRIMARY SWITCH TYPE NO. SZM-V 16-FA-62 OR VP-532A-OF FOR MONITOR SWITCH TYPE NO. SZM-V 16-FA-63 OR VP-533A-OF FOR SECONDARY SWITCH B. -
Page 17: Component Test Procedure
COMPONENT TEST PROCEDURE 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 WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. - Page 18 COMPONENTS TEST PROCEDURE RESULTS Antenna Gasket Chassis Filament NOTE: When testing the magnetron, be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition. HIGH VOLTAGE Measure the resistance. Normal: Momentarily indicates CAPACITOR (Ohm-meter scale: Rx1000) several ohms, and...
- Page 19 COMPONENTS TEST PROCEDURE RESULTS Check for continuity of relay 2 with an RELAY 2 POWER ohm-meter. LEVEL (Remove wire leads from relay 2 and 4 sec 18 sec operate the unit.) 6 sec 16 sec 8 sec 14 sec 10 sec 12 sec 12 sec 10 sec...
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Page 20: Trouble Shooting
TROUBLE SHOOTING WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL. CAUTIONS 1. Check grounding before checking for trouble. 2. - Page 21 (TROUBLE 1) The following visual conditions indicate a probable defective control circuit. 1. Incomplete segments. • Segment missing. • Partial segment missing. • Digit flickering (NOTE: Slight flickering is normal.) 2. Colon does not turn on or blink. 3. A distinct change in the brightness of one or more numbers in display. 4.
- Page 22 (TROUBLE 2) Oven does not operate at all, Display window does not display any figures, and no input is accepted. CONDITION CHECK RESULT CAUSE REMEDY Malfunction of the Replace fuse, Check continuity 1. Fuse blows. Continuity. monitor switch. primary, monitor, of monitor secondary switch (with...
- Page 23 (TROUBLE 3) Display shows all figures set, but oven does not start cooking while desired program times are set and START pad is touched. CONDITION CHECK RESULT CAUSE REMEDY Defective Replace Check continuity 1. Setting time No continuity. secondary switch. secondary switch.
- Page 24 (TROUBLE 5) No microwave oscillation even though oven lamp and fan motor run. (Display operates properly) CONDITION CHECK RESULT CAUSE REMEDY No microwave Defective PCB Replace PCB Disconnect the No continuity. oscillation. assembly. assembly. wire leads from relay 2 and check continuity Continuity.
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Page 25: Exploded View
#EV# EXPLODED VIEW INTRODUCTION MODEL NO. 767.89330 767.89333 767.89339 SENSOR PARTS OVEN CAVITY PARTS INTERIOR PARTS BASE PLATE PARTS DOOR PARTS For 767.89333 Only LATCH BOARD PARTS CONTROL PANEL PARTS... - Page 26 #EV# DOOR PARTS MODEL NO. 767.89330 767.89333 767.89339 13581A 13552A For 767.89333 13536A only 13551A 13213A 13352A 13720D 14026A 14970A...
- Page 27 #EV# CONTROL PANEL PARTS MODEL NO. 767.89333 24781M 23551A 268711 WTP018 23550D 24510L 24970A 23551B...
- Page 28 #EV# CONTROL PANEL PARTS MODEL NO. 767.89330 767.89339 24781M 23550D 23572A 23506A 268711 WTP018...
- Page 29 #EV# OVEN CAVITY PARTS MODEL NO. 767.89330 767.89333 767.89339 WTT010 For 767.89330 WTT020 For 767.89333 89339 33112U WTT021 33052M 340511 WTT010 For 767.89330 WTT020 For 767.89333 89339 33390G 36549S 35889A WTP013...
- Page 30 #EV# LARCH BOARD PARTS MODEL NO. 767.89333 WSZ085 56912B 55262A 466001 43501A 466003 466001 43500A...
- Page 31 #EV# LARCH BOARD PARTS MODEL NO. 767.89330 767.89339 WSZ085 56912B 55262A 466001 43501A 466003 44510A 43500A 466001...
- Page 32 #EV# INTERIOT PARTS MODEL NO. 767.89330 767.89333 767.89339 568771 WSZ002 56411A 50FZZA 948501 56930V 56201A 34930W WTT028 56549F 54974S WSZ085 55900A WTT037 WSZ002 WSZ002 50CZZH 54810G 35012A WSZ002 54810C WTT028 WSZ002 56324A 56851D WSZ002 56201B...
- Page 33 #EV# BASE PLATE PARTS MODEL NO. 767.89330 767.89333 767.89339 63303L 56170D 63302L 63303R 63302R 948502 65006B WSZ002 65006B...
- Page 34 #EV# SENSOR PARTS MODEL NO. 767.89330 767.89333 767.89339 WTP004 54974T 56501A 6-10...
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Page 35: Schematic Diagram Of P.c.b
SCHEMATIC DIAGRAM OF P.C.B. -
Page 36: Printed Circuit Board
PRINTED CIRCUIT BOARD... - Page 37 P/NO : 3828W5S3145...