shunde Md Microwave Oven E8528P-B Microwave Oven User Manual Users manual

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Document ID	180548
Application ID	lp7LfoknH+VJH+tRdOllsQ==
Document Description	Users manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	286.45kB (3580682 bits)
Date Submitted	2001-11-21 00:00:00
Date Available	2001-11-13 00:00:00
Creation Date	2001-11-21 09:18:49
Producing Software	Hewlett-Packard Intelligent Scanning Technology 3
Document Lastmod	2001-11-21 09:19:23
Document Title	Users manual
Document Author:	dayangj [ LISAC ]

A. Do not attempllo operatethisovenwith
the door open sinceopen-dooroperation
can result in harmfulexposureto microwave
energy.It is importantnol to deieator
tamper "vilh lhe safelyinterlocks.
i8. Do nol place any obJeclbelween
oven front face and the door or allow
soil or cleaner residue to accumulateon
sealing suriaces.
C. Do not operatetheovenif it is damaged.
It is par1icularly
impor1an~that
theoven door
close properlyandthatthereis no damageto
the (1) Door (bent),(2) hingesandlatches
(brokenor loosened),(3) doorscalsand
sealingsurfaces.
D. The oven shouldnot be adjustedor repaired
by anyone exceptproperlyqualifiedserVice
personnel.
MPORTANT SAFETY INSTRU~TIONS
When using electrical appliances. basic safety
precautions should be follo"/ed. incluo1ngthe following:
VvARNING- To reduce the risk of bums. electrical
shock. firs. injury iO persons or exposure to excessive
mic:-ow2ve energy:
,. READ
2.
3.
4.
5.
ALL. THE INSTRUCTIONS SEFORE USING
THE APPLIANCE:.
Read and iollow the specific "?rero...autions
to avoid
possible exposure to excessive mic.-owaveenergy"
found above.
Tnis appliance must be grounded and properly
polarized.Connect onlyto a propeliygroundedand
p::>iarize-:iouUsl Sse -G(ouncingIns\rlJC:jonson page3.
Install or locate this appiiance only in ac:ordance
v/ith the installation instructions describedin this
manual.
Some products such as ,,/hole eggs and sealed
containers, such as closed glass jars. may explode
and shouid not be heated in this oven.
6. Vse this appliance only for its intended use as
described in the manual. 00 not use corrosive
chemicals or vapors in this appliance.This type of
oven is specifically designed to heat, C:IOk,dry, or
defrost food. It is not desioned for industrial,
laboratory, or commercial-use. It is intendedfor
home use only. Do not use for drying ctothes,linens.
newspaper. or similar non-load type items.
7. Make sure thaI all persons using this appliance, '
especially chiidren, are closely supervisedand
properly instructed on how to use this appliance.
8. Do not operate this appliance ij it h2S a damaged
c:>rd or plug. ii i: is nOIworking propeny,or if it has
been oamagcd Or oropped.
9. This appliance should be serviced onl)' by qualified
zervic~ per:oonne!.Conlac; the nearest authoriz,erJ
service facililyfor examina~on,repairor replacement.
Do not attempt to serviceor repc.irthisappliance.
10. Do not cover or block any openingson the
appliance.Do not store items on top of microwave
oven ii there are louvers on top of oven.
11. Do not store this appiiance outdoors. Do not
usa this product nearwater-forexample,near
a kitchen sink, in Gwet basement,or near a
swimming pool, and the like.
i 2. Do not immerse cord or plug in water.
i 3. Keepcordawayfromheatedsurfaces..
14. 00 not Jet cord hang over edge of table or counter.
15. When cleanina surlaces of door andoven that
come togethe; on dosing the door, use only miid,
nonabrasive soapsor detergents applied with a
spongeor soft cloth.
16. To reduce the risk oj fire in the oven cavity:
a. Do not overcook food. espe~ially starc.~y
items suchas potatoesandfattyitemssuch
as bacon.Carefullyattendapplianceii paper,
plastic, or other combustible materials are
.placed inside the oven to facilitate cooking.
b. Remove wire twist.Uesfrom paper or plastic
bag before placing bag in oven.
c. If materialsinsidethe ovenshouldignite,keep
oven doorclosed,turn ovenoft,and disconnecl
the power cord, or shut off power at the fuse or
cirC'uit breaker panel.
d. Do not use the cavity for storage purposes.
Do nolleave paper products: cooking ulensils,
or food in Ihe cavily when not in use.
e. 00 nol put metal inside the oven, except as
spe~ifica"y
descnbed
In the manual
cookbook if supplied \vith this oven.
or
TABLE OF CONTENTS
00
Introduction and Safety precautions
Safety Precautions
Exploded Views
Schematic Diagrams
Parts List
1.0
Heating Principle of Microwave
2.0
Troubleshooting Procedures
3.0
Commonbreakdown and means of repairing
12
Critical Parts Servicing
13
important things to do prior to critical parts servicing
interlock assembly replacementand adjustment
door and hinge replacementand adjustment
magnetron replace ment
13
13
13
13
5.0
Introd uction
Safety checks and tests after servicing
14
constructional checks
insulation resistance test
microwave leakage test
14
14
15
This Microwave Oven Service Manual is printed in a loose leaf format. Each part is
divided into sectionsrelating to a generalgroup of componentsand each section is
subdivided into various parts describing a particular componentor service procedure.
The subdividing of the subject matter plus the loose leaffonn Will facilitate Uteupdating
of the manual as new or revised componentsand service proceduresare introduced.
Eachpageof this service manual will be identified in the lower right hand comer and as
new or revised pagesare published it will be easyto keep the manual up to date by
following the filing instructions on the cover letter.
This ServiceManual is a valuable servicetool and.careshould be taken to keep it up to
dateby prompt and proper filling of subsequentpagesas they are issued.
SAFETY PRECAUTIONS
!PRECAUTIO,NS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID
IPOSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY:
IA. 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 Federal performance
standard should be performed on each oven prior to release to the owner.
F. Operate the oven from a properly grounded AC outlet capable of supplying 120
volts at 15 amperes.
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.
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THE HEATING PRINCIPLE OF MICROWAVE
Microwave Is one kind of radio wave wlKlSe wavelenctll is very shurt. frequency is very hiBh. Therefore. It Is called ultrahi~h
frequency electromagnetic waye. Microwave can hcat fc)()(1mainly result in the Inutual afrect or the rood in the microwave field
and the microwave field itself.
under the .ffect of microwave field. the tl\C~.1 effect mechanism produced from tile mutual affect or the microwave and the
f~ Includes two aspects: One is Dielectric loss or (lCllar molecule. the olher is clJOducti.e Ius.. or ion.
Usually. f~ is constitute of fH"~anisnl(plant and aninlall. The QfJ:inism is foroled by all kinds of poiar ~ater 111OIecule,
polar
protein molecule, and all S()rts of salt ioll. Tile centcr uf i=rayity or Ibe positive and neptiye charge in the molecule is not coincide. In normal condition. the tn~cculc Is in irrCl~llar IN"derdue to its thermal action, thlls the (ood do not appear JX)larily.
(r:IG.l - la). Undcr thc actiOtI or outcr clectric ficld. the (lClSitiveend or the lJ()Iar molecule trrnd to the negative electric
field, tbe negativc end or ~1ar Itloleculc trend to the pusitive clcctric field. and sonlcwhat arraDle In order througl' the dlrectim or the electric field( FJ(j.1 - Ic). l"Ilis phenolneCtfl11
usually be called MTORQUEPOLARITY". WllCn the.outcr elcctri~
rield apply for tile op~itc polarity, thc polar D,olecule Illcn arrange an OI)po5ile dircclion ()r"dcraccordlnlly( FIG. J -Ib). If
Ille direction of the outer electric field changed ref)Catcclly. the polar molec"le WCKlldref)Caledly sway accordingly. During the
swa,iRl, it is undentalKllIIg Ihnt the pular muleculC!,vlII)ld prUl.luceheat due to Sllnle~hat similar fricliun .0.00& Ihem. When
1+
- J_-::-
-J
(b)
Fi~J- I
II
-(ct~
, lhe electric field is applied ror ultrahigh rrcquent lulcruwave neld rrom tile outside. its direction would change tens hilUm1
times per second. so do the mol~ule. This kind of nllllccuic ~waylng producing: sinlilar frictiooal heat fnJRI the interfercncc
Qnd block of the action slrenst" anionS the molecule, and,changed to mocrnscopic nalcmw.ve heating. Microwave heating nfJt
unly concerned thc nature or the nlatter itselr. but Dls" ck1SCdlyconnected with thc clcctric field strength and rrequency. Whcn
Cherrequency Is low, thc nKJleculeswaying rate and the acute degree or lhe mutual fricl!lln am~ the n1O1«uteis low, and
wwld pnMiu~cmuch heat. When tile frequency is too Iligh. 115thc swin, or tl1e pular looleculc is with rotaCing inertia. it made
the swinK do not in line wiCIJthe changin~ ..h,lhol or lhc: electric field becauseor tate frlciiUt", drag. thus. actually lowed lile polar molecule swaying spced. l"he frictiOfI d.-aging delle\: L, concerning abouCthe magnelectric wave frequency. (MJlarmolecule
shape, and tile matter' s sti~ky degree, To dirfcrentJJlaCICr' s nloleculc. there are dlfferenC .cpecial rrcquency zone, Those aho
absorb microwave enctgy rrom tlle.~ezone are nwst callable to tum microwave ener~y to heat energyApart from the above said acCjon. there Is another actiun which is electric ion under tbe action of microwave field. act nercely
accocnpanied with the aeccleration of electric field. Tllc positive iOfI transfer to the negative pJlarity or the field while the 11egati~e Ion do opposite, Accompaninl with tile clt8nBln~ electric field. the electric Ion chaRging accordingly. During the trans.
fcrlnl. beat produced with tile crash anM1ngthe ion. Thi5 kind of actiwa take the nlain erfcct to Ihose mlcrowaye heating of
high lalt molecule.
No matter It II the pol.r molecule Iw8ylnl or the loa ttansfering. they botIt are turninl the microwave encrJY whicb the Kat.
ina ...atter lOt frOln the IIllCfOWllyeneld to heat ene~y. I":ronl the analasl- of thellrY, we e8n draw .uch 8 cuncluaion th8t the
power which a 'Init of volume nlatte.. absorbed from tile Inicrowave field a.~the followiol foftlula:
Pa
- KE
fErt~a
Pa'Standsfor the power tile heatedmatter absorbedfr(M..tile loicrowavefield.
St_.
for a canstant
E Staad fcwmicrowavefield strength
r Standsfor the ml~rvwaYefrequency.
la~ ~f.ftd. 1- r_- ___I.
-, ~L- L__&_.J
--,.--~

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File Type                       : PDF
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MIME Type                       : application/pdf
PDF Version                     : 1.3
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Modify Date                     : 2001:11:21 09:19:23-08:00
Create Date                     : 2001:11:21 09:18:49-08:00
Author                          : dayangj [ LISAC ]
Producer                        : Hewlett-Packard Intelligent Scanning Technology.3
Page Count                      : 7

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