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Pagina 1/23
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 facilit
ate 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 ri
ght 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 MICROW
AVE..................................................................................................2
2 THE STRUCTURE AND WORKING PRINCIPLE OF MICROWWA
VE OVEN. ................................................3
2.1 HIGH VOLTAGE RECTIFY
ING CIRCUIT. ..........................................................................................3
2.2 MICROWAVE GENERATER.
..............................................................................................................4
2.3 COOLING S
YSTEM............................................................................................................................4
2.4 ELECTRIC CONTROL
SYSTEM........................................................................................................4
3 TYPICAL CIRCUIT ANALYASIS OF MICROW
AVE OVEN................................................................................7
4 HOW TO ASSEMBLE AND DISASSEMBLE MICROW
AVE OVEN COMPONENTS........................................8
4.1 THE CABINE
T ....................................................................................................................................8
THE DOOR COMBINATION..............................................................................................................................
9
4.3 THE CONTROL PANEL AND THE DOOR RE
LEASE MECHANISM. .............................................10
4.4 THE MAGNE
TRON. .........................................................................................................................10
4.5 THE TRANS
FORMER......................................................................................................................11
4.6 THE FAN MOT
OR. ...........................................................................................................................11
4.7 THE CAP
ACITOR.............................................................................................................................12
4.8 THE DIODE.
.....................................................................................................................................12
4.9 THE TURNTABLE COMBINA
TIOM..................................................................................................13
4.10 THE DOOR SAFTY
INTERLOCKS. .................................................................................................13
THE CONTROL PANEL OF A TYPICAL MICROWA
VE OVEN .......................................................................14
5 BREAKDOWN ANALYSIS AND THE MEANS OF OVERHA
ULING ...............................................................15
5.1 EXAMINING THE BREAKDOWN CAUSES.
....................................................................................15
SPOT EXAMINING STEPS OF THE MICROW
AVE OVEN.............................................................................15
5.3 REPAIRING METHOD OF SEVERAL
BREAKDOWN .....................................................................18
5.4 THE CHARACTERS REQUIREMENTS OF MICROW
AVE AFTER IT HAS BEEN REPAIRED......19
6 CRITICAL PARTS SERVICING .......................................................................................................................
20
6.1 IMPORTANT THINGS TO DO PRIOR T
O CRITICAL PARTS SERVICING:....................................20
6.2 Interlock Assembly Replacement and Adjus
tment............................................................................20
7 COMMON BREAKDOWN OF MICROWAVE OVEN
AND MEANS OF REPAIRING......................................21
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D.
E.
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING
TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE
ENERGY
Do not operate or allow the oven to be operated with the door open.
Make the following safety checks on all ovens to be serviced before activating the magnetron or
other microwave source, and make rep
airs 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.
Before turning on microwave power for any service test or inspection within the microwave
generating comp
artments, check the magnetron, wave guide or transmission line, and cavity for
proper alignment, integrity, and connections.
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.
A microwave leakage check to verify compliance with the Federal performance standard should be
performed on each oven prior to rele
ase to the owner.
THIS MANUAL, AS WELL AS THE INFORMATION CONTAINED IN IT, IS TO BE USED ONLY BY AN
AUTHORIZ
ED 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 ADJUSTME
NT SUBJECT
THEMSELVES AND OTHERS TO THE RISK OF SERIOUS OR FATAL INJURY.


Product specificaties

Merk: Premium Levella
Categorie: Magnetron
Model: PM10010

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