shunde Md Microwave Oven E7020P-A Microwave Oven User Manual
shunde Md Microwave Oven Manufactory Co., ltd. Microwave Oven
User Manual
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| Document ID | 167559 |
| Application ID | tIfoyAVjiZb1UiHQlEGagQ== |
| Document Description | User Manual |
| Short Term Confidential | No |
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| Document Type | User Manual |
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| Filesize | 105.01kB (1312588 bits) |
| Date Submitted | 2001-09-04 00:00:00 |
| Date Available | 2001-08-31 00:00:00 |
| Creation Date | 0000-00-00 00:00:00 |
| Producing Software | |
| Document Lastmod | 2001-09-04 13:08:41 |
| Document Title | User Manual |
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| Document Author: | Â@_ |
Glidea®
MODEL: E7020X-Y
SERVHQHNG MANUAL
PRECAUTIONS TO AVOID
POSSIBLE EXPOSURE TO EXCESSIVE
MICROWAVE ENERGY
A. Do not attempt to operate this oven with C. Do not operate the oven it it is damaged.
the door open since open-door operation
can result in harmiui exposure to microwave
energy. It is important not In deieat or
tamper with the saiety interlocks.
E. Do not place any object between
oven iront lace and the door or allow
soil or cleaner residue to accumulate on
sealing suriaces.
D.
It is particularly imponantthal the oven door
close properly and that there is no damage to
the (1) Door (bent). (2) hin es and latches
(broken or loosened). (at our seats and
sealing sun‘aces.
The oven should not be adjusted or repaired
by anyone except properly qualified service
personnel.
SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
When using electrical appliances. basic saiety
precautions should be iotlowed. including the ioilowing:
WARNING—To reduce the risk oi burns. electrical
shock. firs niun/ to persons or exposure to excessive
microwave enemy:
10.
service iacility for examination. reoair or replacement.
Do not attempt to servrce or repair this appliance.
Do not cover or block any openings on the
appliance. Do not store items on top of microwave
oven it there are louvers on top oi oven.
1. MD ALL-THE INSTRUCTIONS : ORE USING 11. Do not store this appiiance outdoors. Do not
APPLIANCE. use this product near water-tor example. near
2. Head and lollow the specific "Precautions to avoid a “Ch?" Sink- i“ a “V5! basement, °f "93 a
possible exposure to excessive microwave energy' swtmmrng 9001, it“ “19 IlkE~
found above. 12. Do not immerse cord or plug in water.
a. This - lia'r'tce must be grounded and property 13. Keep cord away from heated sun‘aces.
polar-i 501 Connect only to a property grounded and 14. Do not let cord hang over edge at table or counter.
polarized outiet. 5-9 “Grounding lns'mfions' on page 3. . ._ . Q
A Ins“ll or loo-tn this “0 ii-nce 0an in "ccordance 15. When cleaning sunaces oi door and oven that" .
' . “ . f 2 .‘ .°~ p = . . _ f‘ .. . come together on crostng the door. use only mud.
With the it'lStalIn-JIOH instructions descnoed In this nonaorasive soaps or detergents applied with a
manual. sponge or soft cloth.
5. Some products such as whole eggs and sealed _ . . , .
containers. such as closed glass jars. may explode 16' '° reduce the "5k °' fire I“ the oven cavtty:
and should not be heated in this oven.
6. Qse this appliance only lor its intended use as
described in the manual. Do not use corrosive
chemicals or vapors in this appliance. This type oi
oven is specifically designed to heat. cook dry, or
deiros‘ ‘ood. it is not designed tor industrial,
laboratory, or commercial use. it is intended for
home use only. Do not use tor drying clothes. linens.
newspaper. or similar non-lood type items.
. Make sure that all persons using this appliance.
especially children. are closely supervised and
property instructed on how to use this appliance.
8. Do not operate this appliance ii it has a damaged
cord or plug. ii it 15 not working properly, or it it has
been damaged or dropped.
. This appliance should be serviced oniy by qualified
Sen/Ice: personnel, Cnntect the nearest authorized
\I
«o
a. Do not overcook tood. especially starchy
items such as potatoes and fatty items such
as bacon. Careiully attend appliance if paper,
plastic. or other combustible materials are
placed inside the oven to facilitate cooking.
b. Remove wire twist-ties irom paper or plastic
bag beiore placing bag in oven.
c. ll materials inside the oven should ignite. keep
oven door closed, turn oven pit. and disconnect
the power Cord, or shut all power at the luse or
circuit breaker panel.
d. Do not use the cavity lor storage purposes.
Do not leave paper products. cooking utensils,
or iood in the cavity when not in use.
e. Do not put metal inside the oven. except as
specifically described in the manual or
cookbook ii supplied with this oven.
clause
urban-
1.0
pun-a
5.0
“Ni
TABLE OF CONTENTS
CO nte nts
Introduction and Safety precautions
Introduction
Safety Precautions
Exploded Views
Schematic Dlagrams
Parts List
Heating Principle of Microwave
Troubleshooting Procedures
Common breakdown and means of repairing
Critical Parts Servicing
important things to do prior to critical parts servicing
interlock assembly replacement and adjustment
door and hinge replacement and adjustment
magnetron replace ment
Safety checks and tests after servicing
constructional checks
Insulation resistance test
microwave leakage test
cabana
12
13
13
13
13
13
14
14
14
15
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.
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.
Bl 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.
. Before turning on microwave power for any service test or inspection within
the microwave generating compartments, c'heck the magnetron. wave gulde
or transmission line, and cavity for proper alignment, integrity, and connections.
. 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.
. A microwave leakage check to verify compliance with the Federal performance
standard should be performed on each oven prior to release to the ownerl
. Operate the even from a properly grounded AC outlet capable of supplying 120
volts at 15 amperesi
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.
THE HEATING PRINCIPLE OF MICROWAVE
Microwave is one kind of radio wave wlmse wavelength is very short, frequency is very high. Therefore. ll is called ultrahigh
frequency electromagnetic wave. Microwave can nut [and mainly resnli in the mutual alieci oi lln: land In me miemnave field
and the microwave field ilscll'.
under the affect of microwave field. lhe ilvcrlnal effecl mechanism pmdacerl from lllc mutual affect iii the nu ovrave and lire
food include! two aspects: 0m.- is Dielectric loss of palm nmlecule. the 0“ch is «inductive loss of Ion.
Usually, food is constitute of nruunisnil plant and animal ) l The organism is formed by all kinds of polar yaler molecule. polar
protein molecule‘ and all inn-ts n! roll inn, Tire center of gravity of the positive and neg-live charge in the molecule is noi wlnv
rifle. in normal condition. me molecule is in irregular uruer mic m in riinrmnl acllun. aims in; food do no! appear poi-rim
(FIGJ —' la). Under llic action M outer clcclric lieitl. llie [n-eilive end at the |mlar molecule trend lo the negative eleciric
iield, Iiie negative end of polar molecule trend to ilie pom ive electric field' and lollcvlliat arrange in order Itrruugli llle direc-
tion of the electric lielle .l r lc). This pllennmemn usually he called "TORQUE POLARITY". When Ihe uulcl electric
field upply [or the act-tulle pnlarily. lire mm muleculc linen arrange an opposiie direellon (ruler “mail-gm FIG-l — Ii). ii
lllc direction of the (ruler elect field mango repulcrlly. um pillar molecule Vllllll) repeatedly sway accordingly During the
e-nyilil. ii i: “mum-mil” I i "of polar muimnp w priulnce he,“ dln‘ in mum-vim aimllar fricliun among them. when
Mgéfi ooobo
GQS (moo
fir.—
+ (at (b)
Fiul —l
lire electric field ll applied for ultrahigh frequent microwave field from the outside, its direction would change tell! bililm
time! per second, so do the molecule. This lilnd of mull-rule swaying producing similar frictional itfll from the interference
and Noel: o! in. action siren-gm among um mrriecule. nmlkclianged tn mmcnpfic mienmlve heating. Mlemwave heating iaul
nnly concerned lire nature at line matter iiseif, but olsu closiuily conuocied with line electric field strength and frequency. when
lhe frequency is Irwv. llic nullecule swaying rate and the acute deuce of the rrwiual friction among the molecule in low. and
wuulri produce much lieall when the frequency is loo high. as the swing u! the puiar molecule is will. rouling inertia. It made
the swing do not in line with the changing rliyll'lm of the electric field because of line lrlcliur- drag. lliua. actually inwad llle pn-
lar molecule swaying speed. The friction ringing degree is concerning about the magneieclric wave frequency. polar molecule
shape. and the miner's sticky degree. To dillaenl ninllcr's molecule. there are differeni special frequency mu. Those aim
am» microwave energy from these zone are man capable I» turn lm'cnnvnvr: energy in hear energy.
Apart from the above “ill aellun‘ there I! unolhel acliuu which is electric inn undcr the ntliun 01 nlieuwmve field, ael fiercely
acmplnied with the acceleration of electric field. The pnf ive Inn Iransfcr in the negative [Illllliy of the field while the lies-
atire ion do nilpwile. Accompaninl with the changing elm: it field. the electric inn changing accordingly. During the trans-
fering. heat produced M In: crash anumg tile ion. 'Il|i! kind of action lake lire maln efieet (u Ilioae ullimmare healing of
high rail mnlecule.
No matter it l; the puk- molecule lwlylll‘ or the ion rransrerlng. they both are rurning me micrmuve enemy wink: he heal-
in' matter not from the lllcrvwn" field to nur energy From the enough of iiienry. we can rlraw well a cuneiulilm iii-t lire
[lower uhicil a unit of Volume mailer Elisabet! from the microwave field as the lollowing lflfllulli
p. - KE fErlg5
l’a Stand! tor the power the heated matter Absorbed lllllll llie microwave field.
K stand: tor a unsi-nl
E Stu-l rm miemwaae fir-hi strenglh
(Stand: for llie mlemwave frequency.
(38 Slandl [or loss angle tangent of the heated mailnrl
n. n-....a. r... ..-
TROUBLESHOOTING PROCEDURES
mevhanliua-lel’owluwven. mthwldjunnuuuuu-w lheultelcorrcflly. nut-yuan rcpnlrlt with
corrupt-ding ways. The overhaulin- muat be proceed ia order. any harty meta-loo ta not recommendable. other-ire crev-
worlinlwodd be done when ”90er The microwave "in my cult! mn'ound breakdow- due tn all kind] oldlllerent
rear-ma. tbue. when overhaul. they all rhould be take Into eanalderatioa. Special attention rnull be given in the mtcmrave
leakage and the electric inrulation when cumina became they may do harmful to the repairing etatl‘.
l . MEANS OF THE BREAKDOWN EXAMINmG-_
How to canmlne‘a mlwvrlare oven with breakdown? A better means which demanairated in praetlcal operating are throw:
Impacting and litter-lug. On the last: of large amount! oi perceptual knowledge. you can judge and analytic the break- '
dawn quietly and correcti.
lnlpection.
irupeet whether the oven rhape h dirordemi and where it the dirortiercd poeitlon. “any. it Ir normal it the cabinet
dlaordeted a little. but abnormal It the oven. the door diaordered. the door hooit broken. the door crooked. or there are
too much Ioorcneu between the door and the oven alter the door ia cloud.
. Lll‘HIlll‘.
Uriening m the voice at the oven operating and the not" of the inn alter it conducted. Minor “wen wen' not". cycling
‘itala" mile and ""ehirhl not» alnuld to consider ll normal. But it In abnormal it the following mire ooeured:
(I) Sound“ wen wen" mile.
(1) Loni tltno “lhllltl' not"
(3) strum “the tin “pt,- 14's".
I . SPOT BXAMiNiNG STEPS OF THS MICROWAVE OVEN.
l.
Examine the microwave lrtlulltlrr‘ retlltlrtee. -
Menu-a the tnantatlng refinance with a armlwier or a meuuhmnuetcr the value ahwt-i not len than 1 megaohm. 0th-
erwlar. part erminatlon chould be taiten at once. Such ll checking whether the motor. the thermal cutout. the tram.
tor-met or the capacitor are electricity teehlng.
Burnlnatton of the reel-tame value oi the miemlwe even,
close the door. eel the rtme,(the urcn Ia at operating wndlllrwt but the power ptng havn‘t hm. plolud tn). mu...“
the two ieot (L- N) of the pallet plug with RX l grade of. avometcr. the rellrianee value lbould be about 1.5 ohm.
it npen circuit occurod. then you must check whether the IA lure la hrolten. the primary winding oi’ the transformer I:
open circuit. the thermal cutout ia open circuit or not. you must cheek whether the interlock device ll put through or
III (I). plug] ll. connected will. ll’ this" circuit natured or the ream-nu lei! than 1.5 ohm. you ahottld check whether
the primary winding oi the wire! lrlrtai’nrmer la ihwl - elreulted or part limit — clrcullet‘l.
. Bnmlnllinn tel mlcrwnwe leakage.
Mearure the microwave leakage with a microwave leakage measure. Place a graduate ol 175ml water at the middle of
the gtau tray of the oven (Elms - 1). Close the door. power ret high. time not to 3 mlnutu. prera the starting button
to operotc the oven. Alter reclitilctl the microwave leakage measure. measure around the door crack. those hole pool-
tion of the wlndnw anti the air vent at {our rider oi the oven with the probe of the mermre. When mearure. the moving
lwed ol the probe llmld not wooed “mm per accord. and the nurturing direction glmld be the time with the cutting
direfllon d the microwave leakage (FlGJ - 2).
What manning. the ultimate value of microwave leakage oi“ all the measured [tuition rhould not “need t milliwatt/
crn‘. or that-id be conaidered as abnormal.
. Examine when thc oven at onerating. but the (nod Ean‘t be heated.
(l) Examine when the hm]! is on. the glare tray Ia cycling. the tan operating in normal:
Talu oil the cabinet. atoning the oven. measure the plugoi’ the tramtormer with a aromeier to see whether it tr e-
notch I0 114". II It in ermgh lit 121”. then the recondary hill! voltage of the tramformer elmuld be examined at
FIGJ - J.
Meaaure n wllh the ZSWV alternating grade of model 500 avometer. One rod of the avometer connect the Iron core
al the transformer. the other rod connect the secondary high voltage olu; (1110.5 - 4). The avometer rudln;
would be about 2100V (when measure. be careful with the high volume). If no voltage at all. ll Indlcatea that the
(ran-former h-l hroken. and should be replaced by a new one. If It Ia enough In 1101)“. then check (he filament
voltage of the transformer with allernalln; 10V grade of a avmneler. the value alumld be about 3.4V (FIGJ - 5).
mane-y uni-ill:
ems — s Elms —4
I‘lla-ear vlndln'
Had-5 Flg.S-6 , Flg.5~7
If there ls no voltage it all. It Indlcalea the "uniform" llll broken. and ahollld be replaced by I new one. ll It I:
enough In 3.4v, cheek the filament realalanee of (he magnetron, measure the filament plug wllh the in 1 [fade
or a avometer (FIG. 5 - 6). If It Is open - churned. it indicates the museum has broken, and should be upland
by I new one. It I! normal II’ (he refinance value I: very small. Then check whelher the mlgnelron eleel hll
hocken. ll’ hrnlren. replace with a new magnetron.
ll’ there I: no problem wlth the magnetron. check the high voltage diode then. Measure the diode wilh R x 10K
grade 01 a avomerer. the “ Q " rod end at lhe lvomeler connect Ihe cathode of the diode. the " ‘ " rod end of (In
avometer connect the anode ol’ the diode (FIG. 5 - 7). The avameter reading lhollld be about 150 “wound ohm.
Then change the md to dinerem electrode. the reading should be “0°". If the readln| I: very small. and near to
short clmull. ll lndlcales [he hlgh vollage dlod: ha! been punctured, and should be replaced by a new one.
it the high voltage dkale is OK. «then cheek the forwarding plug of the tranrhmner to see whether it it enough to
IZDv. it It is not enough. cheek'the mlcro— switch oi“ the time and power distributer. Connect the two rod oi the
avtnneter to the 1.2 place oi“ the timer with it“ 1K grode.lt is normal It the readinz it “Written at cut all smili-
tlottull’ the reading is ”0°". It indicate the micro switch has broken. and the timer aim-id be replaced by a new
one. ll all the above examination shows normal. then check whether tltc terminal pittl oi the magnetron and tire ea-
plcltor have loosed.“ it ll loosed. pineit it tightly with a pliers.
s Enmtne the ttartlna and the
Pullout the power plug. trike oil the cabinet. diwhlr'e the capacitor. measure the resistance value ot‘ the primary
winding and the lectmdary winding oi the tranai‘ormer with a avontetet’ (FIG. 5 - ill and FIG. 5 - 9) . The resist-nee
value of the primary winding should be about 1.2 ohm. the secondary winding should be about 130 ohm. otherwise. it
Indicates the transformer has broken, and should be replaced by a new one.
P'Irrtary rut-ulna
Fi|.5~— It Fig.$- 12 Fig.5- In
it the transformer is normal. then the high voltage capacitor should be checked. Pull out the connecting plug of the ea-
paettor. and measure it with R X 1 grade of a avorneter. tlte two rod of the arotneter connect the two polarity oi“ the ca-
paeitor. When they jraat connected. the radio. oi' the lvometer should be zero. then enlarge to nine meunhm slowly.
Change the rod to dillerent polarity. the reading rep'eat lrorn zero to nine meuohm (FIGJ - u). it man- the cap-ci-
tor Is normal. it“ the Indicator of the avometer un't‘point out from zero to nine meuohtlt. it indicates the high voltage
capacitor has broken. and should be replaced by a new one.
if It Is normal between the two pole oi the capacitor. then the Insulation between the capacitor pole and the cabinet
should be measured with RX 10K [ride oi“ a arorneter. The resistance value ahottld be “0°" (FIGJ - 11). ll it is
short eircuited or have I number reading. It indicates (hit the capacitor has been punctured or electricity lacked, and
should be replaced by a same model. same capacity one.
If the resistance value of the capacitor's two pole are “N". the capacitor is normal. Theo cheek the earth oi‘ the mar
netron'a two filament to see whether they are short - clrcttited (FIG. 5 - is). ll they are short -' clrcuited and the lila-
msnl allik‘l (It: shell of lire magnetron. It indieltau ll" magnetron h-l brekon. and should be rtpllM by I new. same
model one.
it the rna|netron is also normal. then test the pilot switch. Pull out the two plugs of the switch. Measure it with the It
i 1 grade of a avotneter, the two rod connect the plug oi the switch. the resistance value should be "N"(FlG.5 - 3).
Then press down the pilot switch with a screwdriver. ii the rudin; oi the arotneter pointed to zero. it indicates the pl»
lot switch has broken. and should replace it with a new. same model one.
ill . REPAIRING METHOD OF SEVERAL BREAKDOWN
1. Repair when there oocured large amounts microwave leakale. There are many factors which may cause mterowave
locking. Followiu mentioned may he the main cause of microwave leakage:
(i) The door deiormed. the hinge loosed or damaged that caused the door can not close tlflttiyt
(1) The door pressing cover or the embed piece damaled or come oil.
(3) 0mm. dama'e or ttneven or the oven.
(4) There are filth belt-tun the door and the nrven.
(5) The door and the oven are serious loosed after the door closed.
(6) The erlck of the door lhleldln. net cover,
Before repllrlu. eheek whether the above tistul polnt Ire existed. ti not. can you start the microwave oven. Place
a undone at about 215ml water at the middle ot the ulna trey. elm the don. time set at 3 mlnutel. Dower ll
hl‘h. matte the oven over-tin; In mun-I. Recltlly the mlcrowave leakage meuure. measure the ltmttnt of the
mluvwlve leakage around the oven wlth it: probe. ii there are place: which the leakage exceed the ltandard re-
quirement. then repair them accordingly. it the leakage amount exeeeti l milltwatt/cm‘ It the leit door creek.
then pullout the pun. plug, take down the uhlnet. ndjust the mum oi the hit-get up and low) u rum: — 14
to less the up between the door and the oven. Then measure apin. the leak-u amount should ten then I milli-
watt/em'. Generally. It should be conlmled below 0.75 mllllwett/cmz with me lilowenee.
Mmhwpnnmnm—
MEI-ulna)
Deer mam pan u "a: m-
thes-u Figts-ls
ll the leakage occurred at the rl|ht door creek. aqluat the metres whleh it: the Interlock holder end the hook. it
the leakage la on the larger ride at the right - above of the oven. then adj-at the upper screw ll FIG. 5 - 15.
Loosen out the screw. push the door close to the oven to hook the door hook with the plutlc perm. then tighten the
Screw lnin. It the Inhale la larger at the right- below. then nut-n the lower "new at FIG. 5 - ts. Lowell the
urew. push the door elm to the oven to hook the door Molt wlth the awltch holder tightly. then tighten the screw
anln. Ind open and close the door repeatedly to cheek whethu the door can operate flexibly. whether the hook
and the awlteh Ire in their normal pneitlnn. If it ll not In volition. then ldjuet the that hook and the lwlteh holder
tepenledly to make them to the norm-l volition, to put through the lnterioeiu. to cut off the pilot ewiteh. to let!
the Iooee between the door and the oven. then melaure the leakage with microwave leakage meuu'e epin.
ii the leakue atlll exceed standard requirement then lnlpeei whether the right even I- even or not. ll not, nomi-
it. Then adjust the door and the oven to eliminate their loose to the ultimate.
it there still exist microwave iealtage. mature near the magnetron with the probe of the microwave Inhale mea-
sure. it the leak!“ is larger. the oven ahoukl be turned oil and check whether the tour rerewl which [la the may
netrom have been looted. ll loosed. twlat them tightly with rocket wrench. if the [our screw: are fixedly. then the
mlwlrfln ahuuld be take down to check tlte eon-er filament weaved washer oi the mogetron hat been placed well
or whether the wave lulde homing eottpllu has been oxidized or have lacquer on It. it do have. urape the oxi-
dized layer or the lacquer oil. when it! the magnetron. the copper lilament weaved washer mutt be placed well.
the eerewa moat be twllt tightly. Then turn on the oven and mature again until It comply with the requirement.
it the microwave leakqe is larger at those note position ot’ the wtuouw tell-"L “I: um. almld be turned o" to illv
apeet whether there are crack among them (ill. 5 - 17). ll eeveral holes formed a crack . it would mlarge the mi-
erowave leakage. it that I! the use, it lndlealea the door has broken. and ehould be replaced with a new door.
2. Mean; 0! repair when the oven can heat. but the turntable y." can't move
Flretly. check whether the turntable holder ia placed correctly. it It I: correct. then pull out the power plu| and take
down the turntable combination. menure the reliatance value of the turntable motor with R X lK grade ol a arometer.
II II in Well- ctrculted. ll indie-lea the tulntlhle ltwtm Inn brvlsen, wild should be rephced by I new. “In! nude!
one. it the rellatance value is between is - 22K. lt Indicate! the tllrntlble motor to normal. then check the tat-meeting
aha" weave. H the Millie! which the allutt inlet! Ill Ills broken. I new lhal't weave ahottld replace it. ~
3. Repair when the oven can heat. but the lamp is not on.
Pull out the power plug. take down the cabinet and dilehar'e the capacitor.
Pull ottt the two terminal pluu of the lamp. inc-sure the two plop ol the lamp with the R x "10 grade of a avotneter.
tr ll l. open- ulrtuited. n indiutu the: lamp has broken. and lhould be replaced by a same model one.
unme-
Fie S ‘ 16 Fig. 5 - 11
4. Mean: of repair when the oven atop working atrer teverai minute: operating
The phenomenon lndie‘tel the thermal cutout la playing m protective role. and you should check whether the r... 1.
working in normal. Turn oil the oven . pull out the power plug. take down the cabinet. ditch-me the capacitor . then
turn the tan with hand to see whether it Is moving flexibly. it“ not. It indicates that the all bearing at the tan tumor hat
run ol’i‘ the oil. and should take down the lan combinatiom to repair the motor. [men the two rcrewa which [la the
bearina out the ahalt and the bearinl. and rlnle them with keroeene (ATTENTION Z The bearing can only be wiped
with a silk which lt'toiltetled with kerosene rather than be warhed In the kerosene beeauae there are tell on It. ii the felt
are make! with kerosene. then the engine oil earl not be lut kcd up. ). After the bearing being tinned. the felt rhould
he refuted lully with engine oil (lot when the oven ll operating the engine oil empty into the all bearln| tlowiy). Fix
the bearing cover with two tcrewt. turn the lan around till it can move flexibly. Then install them to the men. and
plug in the two terminal plqr.
[f the ill! can more flexibly. then the willdln; ol' the fan motor lhould be examined. Measure the winding with R ’( It'll)
grade at a avometer. Ii it ll open- elreulted, it Ittdlcatea the winding of the [on motor ha! broken. and should be re-
placed by a new. same model one.
COMMON BREAKDOWN AND MEANS OF REPAlRlNG
PHENOMENON
i. when starting the oven. the
lamp is not on. the turntable
tray ctn't rotate and the [nod
can't be heated
2. When starting the oven. the
lamp ll on.t the turntable rotat-
ing._ the tan cycling hot the food
can 't be treated.
3. The food can he heatd. but the
lamp is not on
4. The (nod can be heated but the
turntable tray Is not rotating.
5. The oven can heat within 2 - 3
minutes. but can not heat irom
the fourth minutes
6. when starting the oven. it can't
hell. and with “wenwen” noise.
7. The oven on heat. but with
wind “lhllltl” Mlle
a. Large amount of microwave
leakage
9. The door can't open
iii. The door release button tall oil“
I l . Electricity leaking
at.-
N.-
up-
The high voltage diode was punctured
. The prim
. The lamp broken.
. The plug [all off.
CAUSE
[use broken
nd secondary winding oi' the
tlllufun’ller are shuli ' shuttled.
The earthlng or the polarity oi the capacitor
is punctured.
. The pilot switch can' r cut off.
The interlock twitch haven“ t closed.
. The power plug anti the pocket are not In
mutinn.
. The door hook broken.
. The primary and ceoondary winding, the ill-
ament oi the transformer are open — circuit-
ed.
. The magnetron filament is open— circulted.
the magnetic lteel oi the magnetron broken
or the magnetron in air leeking.
. Time and power diltrlbuter broken.
. The pin.- or tha nt-gmtron of tho cap-elic-
loosed
REPAIRING MEANS
1 Change a new ruse.
2. Chane a new transformer.
.Change a new capacitor.
. Change a new pilot switch.
. Change I new interlock
switch.
. Adjust the connection or
replace It by a new one.
7. Change a new hook.
than
at
, Change I new transformer.
. Change the magnetron.
Change the time power tut.
tribute! tn the micro- much
. Fix them.
0. up...
1. Change a new lamp
2. insert the plug again
. The turntable motor broken
. The plug fall off
. Connecting thnrt wet-v- hrvkm
. The winding of the tan motor in open — cir-
eulted.
. The fan falls off
. The plug of the fan motor falls off
. The turnatahle shalt ll grlpod with the mo-
lt‘u‘ bearin
. The cmllng vent utnitni
1. Change the turntable motor
2. lnlert the plug recureiy
a. cut-nu. the we."
. change the tan motor
. Change the tan
. insert the plug
. Overhauling them
. Repairing it
Change a new diode
detach-Nt—
. Alter long time using. the wear and the met
2.
. The door deformed
. The door metal net cracked '
. The pp ol the door crack I: too large
. The weldlna point at the oven [all all
The screws which {is the magnetron loosed
. The wave guide connection oxidized.
. The magnetron copper filament washer is too
thin cattle the wave guide opening not in
good earth.
— eaten enlarged the up of the door shalt
and the shalt hole, thur cause the door
crooked.
The door hook broken.
Mend the door
Grange the door
. Adjust the gap
. Change the oven
Tighten the rerewr
Scrape the oxidized and tighten
the rorewa
Thlek the oopper filament
washer
?' expoun—
1. MI"! IIIG [dust to recttiy the
poaitim of the door.
1. Change the hook.
w.................,. m
The uniting Insulation resistance of all the
motors or the tracl'ormer are lest
than 2
megaohm.
Test where it the leaking place»
then repair it or change those
damaged components.
CRITICAL PARTS SERVICING
1 IMPORTANT ‘I'HINGS TO DO PNOR TQ CRITICAL PARTS SERVICENG.
The following imo-uetivns at: camcM. to the owner's safety . Be sure to follow all the inn-unions. Cantu: the
Mathew: or iismisutot it'ytm have any qualion.
I.I
L!
1.3
If the mm is opmtive yriot lo sgvking. a Mimvnve Leakage Tani}; Mimve Enision
Check) would be pel'ormed prior to min; the oven. Ret'e: In Section 7.5. Mintwflve Lukage Tat. for
the deuiled r.‘te:lt pmndutz.
In the event that any micowzve oven found to have mictmve mision level in cuss ot‘-‘ mWItzn. The
follow; procedures shwldbe followei
a. Inform the Mount. imports. or mutant: the finding. Re=otd it in the logbooku well.
b. anir the unit at no cost to the one.
e Invsigtne the ovct and min the cm at" the massive been;
4. Hold the oven in your facility and instruct m: owne: not to use die unit until the ov=t has
be=1 brought into compliance
In the even. that the oven opzets with the door open. fit: following mots-lures should be followz‘;
a. Tofi Museum wopfllefllc mm.
5. Hold the we in your {helix}: until it is investigated and repair-1L
ct Gonna the madam:- md CDRH' (FDA) immediately.
2 Int=loelt Assembly Replaccuett and Mitts-duct
lvatt slayer. tie-edit grimry. month-11 or monitor interlock smiths. use your oi-tutmeze: (mgul or
main type: to chef: the dew-H wndmtity.
Make sttrerhepcw: mispundoutmi lhehieit—voitage npacltsr iséisc‘argedbd'ote the denial
modality diet
Se: the dinner: w ‘vat Raise-tie? me and comet-1 both his (alligmrdips) to the switn‘
minds
09m thedoortmdpon'ee the men:- r=dinp Tneprimryorssondary interlock swirfi simuld shown
“Infinite‘rsimuce “film the doorisopn. Refine it whr. it is defective The monitor induct should
sliotva‘zcvoracn'm'refimncewtmmedwrisopn Wltntheioorisdoscd. themdihgsm‘flbe
apposite
lithe met In: bet indeed bmlive due to the thiiun 01'th monitorezi stay (primqry and/or
- meander” intziodzls). you should replace all or the mammal safety intziocx switchu am the maxim
nviuh.
Refer to Chnpte -l. Sat-inns I and x for how to “move and usable tlte intcioclt and monitor stVitchct.
N\\=_\1 pie.- ln Seetion 0.4 for adqtute wiring diagram. Mnniwr intclnek must always be insinua-
R=p=t $I=p 63.4 m ehfik deem-Aral mun-tiny.
Perform Mttllmd film-$5 ant! lsts a: titanium] in Chapter 7 before reimin; the oven to the own:.
3 Deer and Hing: {fig-glam zrul Adjusmmu
' ' " ' . J: m: him; for
II dre cc curd rrun Ill: wilt. Lack lh: dnor ror war-pd or damp! areas. (he
gram“ $111“ mt Clad: cum arcs fufir as mm mm glass. brake“ dour lamncs. wnml mckzd
vizwin; mm and em
' . " ur doormblydmldkmhddmkhpmfintormc.cme?pgnnumbc.m
95:2me2 must be mice-l firmly I'mm m: mnmhnlre: or ii; unwanted dxsmwum
Raff: to Gupta: 4. Sc'dvns L K. and III for var m disuse-link. assemble and adius: the door udlor
hinge.
Pm'orrn mird Lick-sadlrsuasdscibdincluplc7wmmingme ovnlmhemc.
4 Magnum: Mama“
4.1 erh-wanpteljcfionlv{ormmmmleMMwhmmdm
wir: mat: puke: baht: installation
4 z.’ rdchez‘umd msdmbdhiCEanQThz'mzzim; the oven rovlbeowrre.
l Egmemflv: Lang: TcuRc‘cm Semen 7.55.71. 1h: magma-m arc: priar to Man; an up
cover.
SAFETY CHECKS AND TESTS AFTER SERVICING
Carumu'unal Che-1k;
Emlrmr'cal or dew-id (dc-"HOMO pans have be: replace; be fur: In l'ollmv 1h: fnllmving grep:
L1
1.
Chat: for m1 wiring. adquau mam-rial murmur arm. and firm mars.
Chair. for adquare gum-ding,
(mack the l‘nllmvin; items before turning the over ON.
I) Papedoorchsingsnlldw'fizmficesmdhhgd.
2) No ubine'. damage.
3) Pmpc inxclnck and monirnr nations. (Rd: In Srqs 6.1.2 In 6.1.4.)
Marian Kahuna; T8]
lflh: law wing: pwwc- ugly hm b==1 rcgnirc‘. rm: 3 500 V Mann-him“: lo mm: the wire“: hem the
primary (Lin: and Neural) or“ me WW: pin; and opener mm: metal pans, The W should be ac ks:
than 1 Mega Ohms. Rrrair the an again when “25111.
Mimv: Lang; Tet
In the mat autumn. door. or hing: has b==r=_h¢=='urr=njust¢ nmicwmn mas follows must be
well-reek
3.-
~|
E"
to
SJO
Tax inmlmnu muinfi
Min-unv- Strvcs' Mme, Holiday Morin! EI-lTlO at quitting.
600 ml gins b=kz
Pru-anion
.Tum thc pow: otl'(or unplug the urn) imdhn-Jy if the own hits this (fit.-
Plug th: mnpowzcnrdinmthgpvwcwmdg
Tum w the Minn—ave Ldng: Mm: ndwam up for at lam; 10 minus. Se: the me: mans: (fine:
se!==ion) at ‘FAST.
Fill thegimbckcwith‘fi i-i-I- Ii'pudnfmidup “may“! plan: the bmkz' tn the Calcefih:
unable tins phlfi
Close the oval dear. Sct thc time at "5 minus". Se: the Pew: Level at "KGB" or “100 $4“ and ma lb:
opt-mien.
Held (by an: Email: pot-1mm: pmh: (cane spacer) muufiwhnu the arc: tmdc: u=t for RF amnion:
Move the web: at a spa-J nl'no taste: than I inch p: mud. The arcs umiq In: at.
l) Til: firm-Infant: of the thorium}! ”L
2) Tu: am ol'tlne door was;
3) Tm an: ot‘cuntnl panel.
4) The mu ttcr ling end.
5) All mt opening.
6) All mhinfl seam;
7) Ollta slant an.
Al tetra! locu'vns in the Vi qr m'ceb high Ink-34: point. Itald th- pub: stationary “mu 1 study 5m:
value is mild on the Survey Mar. Ohm-we the maximum Ink-age um loam;
Szz uh: Mex: (lawns: w 1LOW1m Ih: lat-age at th: point “maximum lakage located in
$15? 7.3.3 aim; mod that value and loads-z ofth: maximum lat-age mam-cunt with the met:
(spouse on “SLOW“.
"nu: maximum lt.‘ emission (lungeunwld be 4.0 mWIcmz or In. (rum. instigate and rqtu'r the oven
again until il pass um IflL
‘Ib
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