Fukuda Denshi FX-2111 User manual

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SERVICEMANUAL
Electrocardiograph
FX-2111
4R2043
FUKUDADEIMSHICO.,LTD.

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Copyright©1
99
7byFukudaDenshiCo.,Ltd.
Nopartofthisdocum entmaybecopied
ortransmi
tt
edinanyformwithout
thepriorw
r i
ttenpermissionofFukuda
DenshiCo.,Ltd.
Manufactured inJapan

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Foreword
AWelistupherethewarningmarksusedinFukudaoperationand
servicemanu
a l
s.
Whenyousen/icetheFX-2111,readthisservicemanualthorough-
lyandpayattentionespeciallytoinstructionsbearingthefol-
lowingmarks:
WarningMarks
Warningmarksusedinoperationandservicemanualsandlabelled
ontheinstrumenthavethefollowingmeanings:
Readthemcarefullytounderstandthemeaningsandmakesureof
thesig nificanceofeachparticular.
A
A
A
Thismarkisusedtoindicatethedirecthazards
Dangerwhichmayleadtothedeathorseriousinjuryofthe
person,maywhollydam agetheinstrument,ormay
c a
usefirehazard,unlesstheinstructionswritten
therearefollo wed.
Thismarkisusedtoin
dic
atetheindirectpotential
Warninghazardswhichmayleadtothedeathorseriousinjury
oftheperson,maywhollydam agetheinstrument
ormaycausefirehazard,un lesstheinstructions
w r
itte ntherearefollowed.
Thismarkisusedtoindicatethepossiblehazards
Cau tionwhichmayleadtoamildormediuminjuryofthe
person,maypartiallydamagetheinstrumentormay
erasedatafromtheco mputer.
NOTE"NOTE"isnotwarninginstructionsbutoffersinfor-
mationtoprev entthepersonfromdoingerroneous
sen/icing.
Ot
he
rMarks
0
A
Noticetoindicategeneralunspecificprohibited
matters.
Noticetoindicategeneralunspecificcaution,warn-
ingorhazard.

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T h
isservice
m a n
ualdes cribestec
h n
icalinfo rmatio nonFX-2111to
aidtheserviceengineerintroubleshooting.
Theman ualisintendedtobeusedbyserviceengineersofFukuda
representativesandauthorizedtechnicalstaffconcernedwithmedicalelec-
tronicequipment.Descriptionincludesrepairingandassemblingmethods
ofeachcomponentunitofFX-2111.Forpartslistsanddiagrams,referto
thePartIIoftheservicema
n u
al.
Theservicemanualconsistsofthefollowingninechapters:
1
.GeneralDescription
TheoutlineofFX-2111,specifications,controlsandindicatorsare
described.
2
.CircuitDescription
Circuitconfigurationandfunctionsareexplained.
3
.Troubleshooting
Troublesvs .c
a u
sesand
c o
unter
m e a
suresaredescri
b e
d.
4
.
Maintenance
Procedurestoreplacethepowerfuse,ROMandbatteryandtoperform
self -testaredescri
b e
d.
5
.PeriodicalInspection
Inspectionprocedurestopre venttroub lesandensuresafeandcom-
pleteoperationoftheinstrumentaredescribed.
6
.CircuitDiagrams
7
.AssemblyDiagrams
8
.
ElectricalPartsLi
s t
s
9
.
StructuralDiagrams
ACaution
0.NeverremodelFukudamedicalelectronicequipment.
.Theservicem
a n
u a
lisintendedfortheservic e
engineersofFukudarepresentativesandthetechni-
calstaffconcernedwithmedicalelectronice
qui
p-
ment.Servicing,reassembling,andadjustmentshall
beperformedbyauthorizedserviceengineers.
.Prepareproperfacilitiesandtoolswhenservicing.
.Besuretofollowtheinstructionsofopera tionmanual
whenoperatingtheinstrument.Foroperatingprecau-
tions,refertotheoperationmanual.
ii

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AServicingPrecautions
ACautionslistedbelowaretheinstructionsofprohibit,danger,warn-
ing,andcautiondescribedinthisserviceman ual.Whentakingthe
procedurebearingthefollowingmark,readthedescriptionthoroughly,
thenstartthetask.
ACaution(page3-2)
Whencheckingthepowersupplyandrelatedcircuitsfortroubleshoot-
ing,takesuff icientcaretoavoidashortcircuit.
ACaution(pag e3-3)
Whencheckingpowerfuses,besuretoturnthepoweroffanddiscon-
nectthepowerplugfromthewalloutletbeforehand.
ACaution

(
pag
e3-8)
Theinsertingpartofkeyconnectorismadeofcarbon.Avoidfrequent
repeateddisco nnectionandconnection.
ACaution(page4-1)
Whenreplacingpowerfuses,besuretoturnthepoweroffanddiscon-
nectthepowerplugfromthewalloutletbeforehand.
ACaution(
pa g
e4-1)
WhenreplacingtheROM,besuretoturnthepoweroff.Al so,takecare
toinstalltheROMincorrectposition.
ACaution(page4-2)
Whenreplacingthebattery,besuretoturnthepoweroffanddiscon-
nectthepowerplugfromthewalloutletbeforehand.
ii i

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ACaution(page4-6)
Disassembling/ReassemblingPrecautions
Besuretodisco nnectthepowercordandmakesuretheinstrument
isturnedoffbeforedisassemblingorreassembling.
.DonotremovethebatterybeforedisconnectanyPCboard.
Takecarethatrepeateddisconnectionofthekeypanelandsensor
boardmayresultinpoorcontact.
Usepropertoolstoloo senscrews.
.Whenreassembling,makesurethatallscrewsaresecurelytight-
enedandallcon necto rsarecompletelyinserted.
PCBoard HandlingPr ecautions
.PCboa rdsareequippedwithhighlysensitivecomponentstostatic
electricity.
.PCboardsarehighlysensitiveelectronicdevices.
PutremovedPC
boardsinaproperprotectivebagortakeappropriatemeasu resto
protectthem.
Handle PCboardscarefully.Ashocktothemmaydamagetheco m-
ponents.
Neverinsertaconnectortothepowe redPCboa rdnorremovethe
poweredPCboard.
ACaution

(page5-2)
Ifyoufindavaluewhichexceedstheallowa blelevel,besuretolet
theuseravoidusingtheFX-211 1.IftheuseroperatestheFX-2111as
itis,he/shemayrece iveanhazardousaccide nt.
EquipmentClassification
TheFCP-2155isclassifiedintothefollowingequipment:
1
.
Protectionagainstelectricalshock
Cl
a s
sI
2
.Typeaga instelectricalshock
App liedpart:TypeCF
3
.Degreeofprotectionagainstharmfulwaterinvasion
Otherequipment
4
.Degreeofsafetyinusingunderair-inflammableanestheticgasesor
oxygen/nitrousoxide-anestheticgases
Equipmentusedunderanenvironmentco ntainingnoinflam
ma b
le
anestheticgase sornoinflamm ablecleaningagent.
5
.Run
ni
ngmod e
Continuousrunningmode
iv

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CHAPTER
1
GeneralInformation
1
.
OutlineoftheFX-211 11-1
2
.
Specifications1-1
2.1Electroc ardiographSection1-1
2
.
2General1-2
2
.
3Environ
m e
ntalConditions1-2
3
.
Controlsan dIndicators1-3
3
.1TopPanel1-4
3
.2SidePanels,LeftandRight1-4
3
.
3Bo
t t
omPanel1-4

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1
.
OutlineoftheFX-2111
TheFX-2111istheeasy-to-usesingle-channelelectrocardiograph
featuringasimpleoperationpanel.Thecompactyethigh-performance
designmakesitsuitablenotonlyforuseintheconsultationroombut
alsofor-carryinginavisittothehospitalwardorpatient
'shomeand
examinationatanemergencysite.
Ithasahigh-densitythermaldotprinterincorporatedtoprovideclear
ECGrecording.TheFX-211 1canoperateoneitherAClineorrechargea-
bleNi-MHbattery.
2
.Specifications
2
.1ElectrocardiographSection
Floatingfromtheground
Standardand
C a
brera12le ads
20MQ
m i
n.(referredto10Hz)
5x10"8max.
1
m V

w i
t
h i
n±5%
Commonmoderejection:10mmorlessperIEC 62DC06test
Inputcircuit:
Lea
d s
:
Inputimpedance:
Inputci rcuitcurrent:
Calibrationvoltage:
Polarizationvoltage:
Timeconstant:
Sensitivitie s:
Frequencyresponse:
ACfilter:
Musclefilter:
DCinput:
Di
sp l
ay:
Recordingsystem :
Paperspeeds:
Chartpapers-
Rollpaper:
Z-
fol
dpaper:
AID
c o
nversion:
Sam plingrate:
m e
thod
±30 0mVmin.
3
.
2secmin.
1/2,1and2cm/m V
0
.
05to150Hz(within-3dB)
50/6 0
H z
,-20dBor
lo w
er
35to45Hz,-3dB(-6dB/oct)
10mm/0.5V,unbal anced,100ki
m i
n.
Liquid-crystaldisplay,20 chars,x2lines
(character:5x7dots)
Therma ldotprinter,8do ts/mm
25and50mm
/s e
cwithin±3%
63mmor50mmwidex30mlong
63mmor50mmwidex20mlong,
75mm/f old
12bits
1ms
1-1

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2
.
2Ge
n e
ral
Safety:
Powerrequirements-
ACoperation:
DC
operation:
Dim ensions:
Weight:
IEC601-1ClassI
.TypeCF
.InternallypoweredequipmentType
CF(IEC601-1)
115VAC,50/60H2;19VAmax.
230VAC,50/60Hz;19VAmax.
9
.6V,7Wmax.(rechargeableNi-MH
battery)
Continuousoperation:app rox.120 min
at20oC(accordingtoIEC62DTesting
Method)
Chargingtime:within3hours
26 (W)x18.2(D)x6.3(H)cm
Approx.1.7kg(excludingbattery)
2
.3Env ir
o n
m
en
talConditions
Operating-
Temperature:10to40oC
Humidity:30to80%RH(nodewcondensation)
Atmos phericpressure:70to106kPa
Transportation&Storage-
Temperature:-10to40oC
Humidity:10to95%RH(nodewco ndensation)
Atmosp hericpressure:70 to106kPa
1-2

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3
.
ControlsandIndicators
TopPanel
@PaperMagazine
31-
k»
XLiquid-crystalDisplay
(DOpe rationPanel
LeftP
an e
lRightPanel
®PotentialEqualization
Terminal
o«
0
00
F3
D
©PowerConnector
©MainPowerSwitch
Q
@DCInp utTerminal
©LeadConne ctor
BottomPan el
©FuseHolders
@
o
{
Ii<
iii
*
0
§)
~
0
~
®0
"©RechargeableeatteryRoom
1-3