Premium Levella PM70710 Handleiding
Premium Levella
Magnetron
PM70710
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INTRODUCTION
This Microwave Oven Service Manual is printed in a loose-leaf format. Each part is divided into sections relating
to a general group of components and each section is subdivided into various parts describing a particular
component or service procedure.
The subdividing of the subject matter plus the loose leaf form will facilitate the updating of the manual as new or
revised components and service procedures are introduced.
Each page of this service manual will be identified in the lower right hand corner and, as new or revised pages
are published, it will be easy to keep the manual up to date by following the filing instructions on the cover letter.
This Service Manual is a valuable service tool and care should be taken to keep it up to date by prompt and
proper filling of subsequent pages as they are issued.
CONTENTS
SAFETY PRECAUTIONS .......................................................................................................................................... 1
1 THE HEATING PRINCIPLE OF MICROWAVE .................................................................................................. 2
2 THE STRUCTURE AND WORKING PRINCIPLE OF MICROWWAVE OVEN. ................................................ 3
2.1 HIGH VOLTAGE RECTIFYING CIRCUIT. .......................................................................................... 3
2.2 MICROWAVE GENERATER. .............................................................................................................. 4
2.3 COOLING SYSTEM ............................................................................................................................ 4
2.4 ELECTRIC CONTROL SYSTEM. ....................................................................................................... 4
3 TYPICAL CIRCUIT ANALYASIS OF MICROWAVE OVEN ................................................................................ 7
4 HOW TO ASSEMBLE AND DISASSEMBLE MICROWAVE OVEN COMPONENTS ........................................ 8
4.1 THE CABINET .................................................................................................................................... 8
THE DOOR COMBINATION .............................................................................................................................. 9
4.3 THE CONTROL PANEL AND THE DOOR RELEASE MECHANISM. ............................................. 10
4.4 THE MAGNETRON. ......................................................................................................................... 10
4.5 THE TRANSFORMER. ..................................................................................................................... 11
4.6 THE FAN MOTOR. ........................................................................................................................... 11
4.7 THE CAPACITOR. ............................................................................................................................ 12
4.8 THE DIODE. ..................................................................................................................................... 12
4.9 THE TURNTABLE COMBINATIOM. ................................................................................................. 13
4.10 THE DOOR SAFTY INTERLOCKS. ................................................................................................. 13
THE CONTROL PANEL OF A TYPICAL MICROWAVE OVEN........................................................................ 14
5 BREAKDOWN ANALYSIS AND THE MEANS OF OVERHAULING ............................................................... 15
5.1 EXAMINING THE BREAKDOWN CAUSES. .................................................................................... 15
SPOT EXAMINING STEPS OF THE MICROWAVE OVEN............................................................................. 15
5.3 REPAIRING METHOD OF SEVERAL BREAKDOWN ..................................................................... 18
5.4 THE CHARACTERS REQUIREMENTS OF MICROWAVE AFTER IT HAS BEEN REPAIRED ...... 19
6 CRITICAL PARTS SERVICING ....................................................................................................................... 20
6.1 IMPORTANT THINGS TO DO PRIOR TO CRITICAL PARTS SERVICING: .................................... 20
6.2 Interlock Assembly Replacement and Adjustment. ........................................................................... 20
7 COMMON BREAKDOWN OF MICROWAVE OVEN AND MEANS OF REPAIRING ...................................... 21
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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 misaligned 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 Federal performance standard should be
performed on each oven prior to release to the owner.
THIS MANUAL, AS WELL AS THE INFORMATION CONTAINED IN IT, IS TO BE USED ONLY BY AN
AUTHORIZED SERVICE TECHNICIAN FAMILIAR WITH AND KNOWLEDGEABLE OF PROPER
SAFETY AND SERVICING PROCEDURES AND POSSESSING HIGH QUALITY TEST EQUIPMENT
ASSOCIATED WITH MICROWAVE AND ELECTRICAL APPLIANCE REPAIR.
ALL INDIVIDUALS WHO ATTEMPT REPAIRS BY IMPROPER MEANS OR ADJUSTMENT SUBJECT
THEMSELVES AND OTHERS TO THE RISK OF SERIOUS OR FATAL INJURY.
Product specificaties
| Merk: | Premium Levella |
| Categorie: | Magnetron |
| Model: | PM70710 |
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