Sears Kenmore 767. 8514300 Manuel utilisateur

Department 731A Toronto

BASIC SERVICE MANUAL

MODEL 767. 8514300

MAY, 2002

FOR

MICROWAVE OVEN

TECHNICAL FLASH

T.F. 22-467

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; (1) Interlock

operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and

other damage), (4) damage to or loosening of hinges and latches, (5) evidence of

dropping or abuse.

c. Before turning on microwave power for any service test or inspection within the

microwave generating compartments, check the magnetron, wave guide or

transmission line, and cavity for proper alignment, integrity, and connections.

d. Any defective or misadjusted components in the interlock, monitor, door seal, and

microwave generation and transmission systems shall be repaired, replaced, or

adjusted by procedures described in this manual before the oven is released to the

owner.

e. A Microwave leakage check to verify compliance with the CSA Standard should be

performed on each oven prior to release to the owner.

• Proper operation of the microwave ovens requires that the magnetron be assembled to the

wave guide and cavity. Never operate the magnetron unless it is properly installed.

• Be sure that the magnetron gasket is properly installed around the dome of the tube whenever

installing the magnetron.

• Routine service safety procedures should be exercised at all times.

• Untrained personnel should not attempt service without a thorough review of the test

procedures and safety information contained in this manual.

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.......................................................................................................................................... 1-1

CAUTIONS..................................................................................................................................................... 2-1

INSTALLATIONS............................................................................................................................................ 3-1

OPERATING INSTRUCTIONS....................................................................................................................... 4-1

CONTROL PANEL ................................................................................................................................. 4-1

CONTROL PANEL INSTRUCTIONS ..................................................................................................... 4-2

OVERALL CIRCUIT DIAGRAM...................................................................................................................... 5-1

SCHEMATIC DIAGRAM......................................................................................................................... 5-1

MATRIX CIRCUIT FOR TOUCH KEY BOARD...................................................................................... 5-2

GENERAL INFORMATION FOR SERVICE................................................................................................... 6-1

GENERAL PRECAUTIONS IN USE ...................................................................................................... 6-1

TRIAL OPERATION ............................................................................................................................... 6-1

FEATURES AND SPECIFICATIONS FEATURES................................................................................. 6-1

SERVICE INFORMATION ............................................................................................................................. 7-1

PRECAUTIONS AND REPAIR SERVICE TIPS..................................................................................... 7-1

MICROWAVE LEAKAGE TEST............................................................................................................. 7-2

POWER OUTPUT MEASUREMENT ..................................................................................................... 7-3

DISASSEMBLY INSTRUCTIONS .......................................................................................................... 7-4

INTERLOCK SYSTEM .......................................................................................................................... 7-12

INTERLOCK CONTINUITY TEST.......................................................................................................... 7-14

TEST AND CHECKOUT PROCEDURES AND TROUBLE SHOOTING................................................ 7-15

A. TEST PROCEDURES................................................................................................................ 7-15

B. CHECKOUT PROCEDURES..................................................................................................... 7-18

C. TROUBLE SHOOTING.............................................................................................................. 7-21

EXPLODED VIEW.......................................................................................................................................... 8-1

REPLACEMENT PARTS LIST............................................................................................................... 8-8

SCHEMATIC DIAGRAM OF PCB .......................................................................................................... 8-10

PRINTED CIRCUIT BOARD .................................................................................................................. 8-11

PCB PARTS LIST................................................................................................................................... 8-12

1-1

Rated Power Consumption 1,500W maximum (Microwave oven+Cook top lamps+Ventilation fan)

Microwave Output 1050W (IEC 60705)

Adjustable 100W through 1000W, 10 steps

Frequency 2,450 MHz + 50 MHz

Power Supply 120 VAC, 60 Hz

Rated Current 13 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 Thermal Fuse:

Open at 109°C +

_ 4°C

Oven Cavity Thermostat:

Open at 110°C +

_ 5°C

Fuse(20A)

Primary Interlock Switch

Secondary Interlock Switch

Interlock Monitor

Magnetron 2M246-050GF or 2M248J

High Voltage Capacitor Capacitor: 1.0µF, 2.1 KV AC

High Voltage Diode Diode; 350mA, 9.0 KV

Cook top Lamp 125 V, 30 W

Cavity Lamp 125 V, 30 W

Timer Digital, up to 99 mim. 99 sec. (in each cooking stage)

Tray Tempered Safety Glass

Overall Dimensions 2915/16”(W)x167/16”(D)x155/8”(H)

Effective Capacity of Oven Cavity 1.9 Cu.ft.

Accessories Owner’s Manual & Cooking Guide, Installation Manual,

Exhaust Adapter, Exhaust Damper, Mounting Kit and Two Filters,

Rotating Ring Assembly, Metal Rack.

SPECIFICATIONS

2-1

CAUTIONS

• DO NOT operate on a 2-wire extension cord during

repair and use.

• NEVER TOUCH any oven components or wiring during

operation.

• BEFORE TOUCHING any parts of the oven, always

remove the power plug from the outlet.

• For about 30 seconds after the oven stops, an electric

charge remains in the high voltage capacitor. When

replacing or checking, you must discharge the high

voltage capacitor by shorting across the two terminals

with an insulated screwdriver.

•

Remove your watches whenever working close to or

replacing the Magnetron.

• DO NOT touch any parts of the control panel circuit. A

resulting static electric discharge may damage this

P.C.B.

• NEVER operate the oven with no load.

• NEVER injure the door seal and front plate of the oven

cavity.

• NEVER put iron tools on the magnetron.

• NEVER put anything into the latch hole and the interlock

switches area.

• Proper operation of the microwave oven requires that

the magnetron be assembled to the waveguide and

cavity. Never operate the magnetron unless it is

properly installed.

• Be sure that the magnetron gasket is properly

installed around the dome of the tube whenever

installing the magnetron.

Unlike other appliances, the microwave oven is

high-voltage and high-current equipment.

Though it is free from danger in ordinary use,

extreme care should be taken during repair.

THE OVEN IS TO BE SERVICED ONLY

BY PROPERLY QUALIFIED SERVICE

PERSONNEL.

MICROWAVE RADIATION

Personnel should not be exposed to the

microwave energy which may radiate from the

magnetron or other microwave generating

device if it is improperly used or connection.

All input and output microwave connections,

waveguide, flange, and gasket must be secure

never operate the device without a microwave

energy absorbing load attached.

Never look into an open waveguide or antenna

while the device is energized.

Gasket

ANTENNA

COOLING FIN

MAGNETRON

CHASSIS GROUND

FILAMENT

TERMINALS

MAGNETRON

3-1

INSTALLATIONS

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.

C. Install the unit on the mounting plate firmly.

D. Place the unit as far away as possible from TV,

radio, etc. to prevent interference.

GROUNDING INSTRUCTIONS

For personal safety, this appliance must be fully

grounded at all times.

In the event of an electrical short circuit, grounding

reduces the risk of electrical shock.

The plug must be plugged into an outlet that is

properly installed and grounded.

BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.

WARNING

Improper use of the grounding plug can result in a

risk of electric shock.

Do not, under any circumstances, cut or remove the

third ground prong from the power cord plug.

CAUTION

This unit is equipped with a 3-prong plug for your

safety. If the wall outlet is a grounded 3-hole type,

the unit will be grounded automatically.

Plug with Ground

Prong

Properly Polarized

and Grounded

Outlet

CONTROL PANEL

4-1

OPERATING INSTRUCTIONS

CONTROL PANEL INSTRUCTIONS

4-2

1. DISPLAY: The Display includes a clock and indicators to

tell you time of day, cooking time settings and cooking

functions selected.

2. QUICK TOUCH CONTROL (For model: 85130, 85138,

85139 only): Press these keys let you cook foods easily.

3. QUICK SENSOR (For model: 85140 only): Used to cook

common microwave-prepared foods without needing to

program times and cook powers.

4. MORE: Touch this pad to add ten seconds of cooking

time each time you press it.

5. LESS: Touch this pad to subtract ten seconds of cooking

time each time you press it.

6. HELP: Touch this pad to learn how to use each oven

function.

7. EXPRESS DEFROST: Meat, poultry, fish. Touch on pad

to select food type and defrost food by weight.

8. QUICK TOUCH PLUS: Touch this pad to set and start

quickly at 100% power.

9. QUICK DEFROST: This pad provides you with the quick

defrosting method for 1.0 pounds frozen foods.

10. NUMBER: Touch number pads to enter cooking time,

power level, quantities or weights.

11. TIME: Touch this pad to set a cooking time.

12. POWER: Touch this pad to select a cooking power level.

13. CUSTOM SET: Touch this pad to change the oven’s

default settings for sound, clock, display speed, defrost

weight, and demo mode operations.

14. HOLD WARM: Touch this pad to keep hot, cooked foods

safety warm in your microwave oven for up to 99 minutes

99 seconds.

15. TIME OF DAY: Touch this pad to enter the time of day.

16. CUSTOM COOK: Touch this pad to recall one cooking

instruction previously programmed into memory.

17. LIGHT TIMER: Touch this pad to set the light timer.

18. KITCHEN TIMER: Touch this pad to set the kitchen

timer.

19. STOP/CLEAR: Touch this pad to stop the oven or clear

all entries.

20. START: Touch this pad to start a function. If you open

the door after oven begins to cook, retouch START.

21. ON/OFF: Touch this pad to turn off the turntable.

“OFF” will appear in the display.

22. HI/LOW/OFF: Touch this pad to turn the fan on or

off.

23. HI/LOW/OFF: Touch this pad to turn on the

cooktop/countertop light.

5-1

SCHEMATIC DIAGRAM

OVERALL CIRCUIT DIAGRAM

MATRIX CIRCUIT FOR TOUCH KEY BOARD

5-2

Table des matières

Autres manuels Sears Four à micro-ondes

Sears

Sears 721.88512900 Manuel utilisateur

Sears

Sears 721.80513 Manuel utilisateur

Sears

Sears 721.66462500 Manuel utilisateur

Sears

Sears 27" Wall Oven Manuel utilisateur

Sears

Sears 721.63652300 Manuel utilisateur

Sears

Sears Kenmore 85130 Manuel utilisateur

Sears

Sears 721.66292500 Manuel utilisateur

Sears

Sears 721.80042 Guide d'installation

Sears

Sears 721. 63762 Manuel utilisateur

Sears

Sears 669933 - 1.1 cu. ft. Countertop Microwave Manuel utilisateur

Sears

Sears 721.67902600 Manuel utilisateur

Sears

Sears 721.66312500 Guide d'installation

Sears

Sears Kenmore ELITE 665.63792 Manuel utilisateur

Sears

Sears 721.80402400 Manuel utilisateur

Sears

Sears Kenmore 721.69211 Manuel utilisateur

Sears

Sears 721.62212200 Guide d'installation

Sears

Sears 721.85062 Manuel utilisateur

Sears

Sears Kenmore Elite 85063 Manuel utilisateur

Sears

Sears Kenmore 767.8702000 Manuel utilisateur

Sears

Sears 721.66102500 Manuel utilisateur

Sears

Sears Division 20 721.62102200 Manuel utilisateur

Sears

Sears 721.69252990 Guide d'installation

Sears

Sears 721.81622600 Manuel utilisateur

Sears

Sears 721.88502800 Manuel utilisateur

Manuels Four à micro-ondes populaires d'autres marques

Daewoo

Daewoo KOG-574R0S Manuel utilisateur

LG MH7040SS Manuel utilisateur

Sharp

Sharp R-895(AL)M Manuel utilisateur

Dometic

Dometic DOTRM13W Manuel utilisateur

Sanyo

Sanyo EM-X680 Manuel utilisateur

Sharp

Sharp R-393M Manuel utilisateur

KitchenAid

KitchenAid KMCX4510 Instructions d'installation

Smeg

Smeg S45MCX1 Manuel utilisateur

Russell Hobbs

Russell Hobbs RHM2044 Manuel utilisateur

Sunbeam

Sunbeam SMW759 Manuel utilisateur

Gallet

Gallet FMOE230S Manuel utilisateur

Bosch

Bosch CEG732X.1B Manuel utilisateur

Dometic

Dometic Roadmate 230 Manuel utilisateur

Samsung

Samsung SJ0396W Manuel utilisateur

Sanyo

Sanyo EM-P494WS Manuel utilisateur

Sharp

Sharp R-240 Manuel utilisateur

Electrolux

Electrolux EMS2840 Manuel utilisateur

Daewoo

Daewoo KOC-984T2S13 Manuel utilisateur