aoyue Int720 User manual

24
Manufacturer:
AOYUETONGYIELECTRONICEQUIPMENTFACTORY
JishuiIndustrialZone,Nantou,ZhongshanCity,
GuangdongProvince,P.R.China
http://www.aoyue.com
FocusedInfraredWeldingSystem
Int720
INSTRUCTIONMANUAL
ThankyouforpurchasingAoyue720FocusedInfraredWeldingSystem.
Itisimportanttoreadthemanualbeforeusingtheequipment.
Pleasekeepmanualinaccessibleplaceforfuturereference.
This manual is designed to familiarize the technician with
the proper operation and maintenance of the equipment.
The “Care and Safety Precautions” section explains the
hazards of using any type of soldering or reworking device.
Please read carefully and observe the guidelines in order to
maximize usage and minimize the risk of injury or accidents .

2 23
1.)WhatIRsolderlightguntemperatureshouldIuse?
Between 180380°C. Only increase the IR solderlight gun tempera
ture after you have increased the preheater to the required tem
perature.AlwayspreheatthePCB(between30and90seconds)to
allowheattoconductthroughthecomponentbeforeapplyingtheIR
solderlightgun.
2.) What is the working distance of the IR solderlight gun
andhowdoImoveitforrework?
Approximately 510mm when reworking and move up to 30mm
when removing component. Use the gears attached to the device,
particularlytotheIRsolderlightlightgun,toadjustthedistance.
3.)WhatbackheatsettingshouldIuse?
Generally180°200°Csetonthepreheaterisagoodstartingpoint.
Thesystemisalreadyconfiguredtopreheatat200°C.Withthecor
rectpreheatersetting,thetopofthePCBwillreachapproximately
120140°Cinabout60120seconds.
4.)WhydoIneedtheweldinggoggles?
Thegoggleshastwoimportantfunctions:oneistoletyouviewthe
focusedinfraredlightforprecisionsoldering.Theotheristoprotect
youreyesfromharmfuleffectsbroughtbyIRexposure.
FREQUENTLYASKEDQUESTIONS(FAQ)

22
BASICTROUBLESHOOTINGGUIDE
PROBLEM6:SOLDERINGTEMPERATUREPANELDISPLAYS
UNKNOWNCHARACTERS
DESCRIPTION:Afterswitchingthesolderingironbutton,C10,the
solderingtemperaturedisplaypanelshows“350C”shortlythenpro
ducesthreeshortbeepsorthreeconsecutivehighpitchsounds.
Thepanelwillthendisplayunknowncharactersasillustratedbelow.
SOLUTIONS:
1. Checktheconnectionofthesolderingtip.Tightenifitisloosely
connected.OR,
2. Thesolderingtipmayhavebeendamagedandneedstobere
placed.
PROBLEM7:DISPLAYANDOTHERDEVICEOPERATION
ISSUES
SOLUTION: Trytopressthe“RESET”buttononthedevice.Note
thatresettingthedevicewillalsoreset allpreviouslydefinedcon
figurations.
OTHERPROBLEMSNOTMENTIONED:
Contactthevendor.
3
TABLEOFCONTENTS
PRODUCT ILLUSTRATION …………………………………… 4
PRODUCT DESCRIPTION …………………………………… 5
FUNCTIONS & FEATURES …………………………………… 6
PACKAGE INCLUSION …………………………………….. 7
SPECIFICATIONS ……………………………………………. 8
OPERATING PROCEDURES ……………………………. 915
TECHNICAL DESCRIPTIONS ………………………………. 16
CARE & SAFETY PRECAUTIONS ………………………….. 17
MAINTENANCE ………………………………………… 1819
REWORKING TIPS ………………………………………….. 20
BASIC TROUBLESHOOTING GUIDE …………………. 2122
FREQUENTLY ASKED QUESTIONS ………………………... 23

4
PRODUCTILLUSTRATION
21
BASICTROUBLESHOOTINGGUIDE
PROBLEM1:THEUNITHASNOPOWER
1. CheckiftheunitisswitchedON.
2. Check the fuse. Replace with the same type if fuse is blown
(seeMAINTENANCEsection).
3. Checkthepowercordandensuretherearenodisconnections.
4. Verifythattheunitisproperlyconnectedtothepowersource.
PROBLEM2:BULBERROR
This may be caused by either a blown fuse, old or burnt lamp,
corrodedlamppinsoradefectivelampsocket.Checkthedefec
tivecomponentandreplacewhennecessary.
PROBLEM3:INFRAREDLAMPISNOTWORKING
TheIRlamphasalife expectancyof30,000cyclesor50hours
atfullpower.Replacewithanewlampifitalreadylooksburnt.
PROBLEM4:POORINFRAREDLIGHTOUTPUT
Check the lamp pins and socket for corrosion. Residue on the
lamp pins may prevent proper contact between the lamp pins
andthelampsocket.Removethelampandcleanthepinslightly
withabrasivepaper.
PROBLEM5:PREHEATERMALFUNCTIONS
Thismay be causedbyeitherablownmainsoraproblemwith
theconnections.Checkifthepreheaterisproperlyconnectedto
the(mainunit)controller.

20
●Usefluxgel.Thegelwillturnintofluid/liquidtoindicatethat
the PCB is already preheated. The heat from the IR solder
light gun may then be applied. Using flux gel also helps in
protectingandsecuringproperplacementofcomponents.
●Thelongerthe componentorthePCBispreheated,theless
topheatisrequiredtodotherework.
●When the solder is fully molten, tap the PCB and watch the
surfacetensionofthesolderdrawthecomponentintoperfect
alignment.
REMOVINGORREPLACINGACOMPONENT
●Applyfluxtosolderjoints.
●Preheat:Wait30to90secondsforthefluxtoturnintoliquid.
●Reflow:UsetheIRsolderlightgun(therewillbetwoburstsof
smoke(fluxflumes),andonthesecondone,youshouldhave
reachedreflow).
●Remove component with the IR solderlight gun raised about
30mmabovethecomponent.Usetweezersorvacuumpento
pickupthecomponent.
REWORKINGTIPS
REMINDER:AlwayswearweldinggogglesORsecuretheprotective
lenswhenreworking.
5
TheAoyue720FocusedInfraredWeldingSystemisareworking
equipmentthatcombinessoldering/desolderingfeatureandinfrared
(IR)technologyinonesophisticatedpackage.Itisdesignedforre
working on doublesided and diverse technology printed circuit
boards(PCB).
Thesystemadaptedtheconceptofheatenergyreflowfrom
topandbottomheatsources.Thetopheatisderivedfroma200
WattshortwaveIRlampwhilethebottomheatsourcedeliversa
maximumof650WattsmediumwaveIR.Undernormaloperating
condition, approximately 25% of the energy is provided by the
topheaterand75%oftheenergyisprovidedbythepreheater.
Finally,theunique,innovativedesignwithdigitalcontrolpanel
offersprecision,safety,andeaseofusetomeetallreworking
requirements.
PRODUCTDESCRIPTION

6
●MicroprocessorcontrolledESDsafeunit.
●Utilizesinfraredheatwavetechnology.Noconventionalhotair
required.
●IntegratedhandsfreeIRsolderlightgun,providingeaseofuse.
●Unique, innovative mechanical design for more precisesolder
ing; eliminates the displacement of surrounding components
brought by unnecessary or accidental movements during re
working.
●Widely used for reworking BGAs, micro BGAs, QFPs, PLCCs,
SOICs,smallSMD,andothercircuitboardcomponents.
●Embeddedpreheatingstationforwarmingbothsurfaceofthe
PCBandeliminatethepossibilityofshortcircuit.
●EasytoadjustIRandpreheattemperatureswithdigitaldisplay.
●Builtintemperaturesensorforstable(temperature)measurements.
●Timer functionality for automating reworking tasks under pre
definedtemperaturevalues.
FUNCTIONSandFEATURES
19
CHANGINGTHEFUSE
●Make sure the equipment is already cooled down and isolated
fromthemainpowersourcebeforechangingthefuse.
●The fuse of the main unit is located at the back of the equip
ment, right below the power plug connector. Change the fuse
bywithdrawingthefuseholderthenreplacethefuseitself.
●Replaceonlywiththesametype,sizeandrating.Pleaserefer
tothetablebelowforfuseratings.
CHANGINGTHEIRLAMP
●SwitchOFFtheunitandunplugthedevicefromthemainpower
source.
●Withdrawthelampfromthehousing.
●Fitreplacement.
●Becarefultohandleonlytheoutsideedgesoftheglassreflector.
CAUTION:Avoidtouchingthebulbinsidethelamp.Thelampmay
failprematurelyifthebulbinsidethelampistouched.
MAINTENANCE
Location Rating Size
RearPanel 5A,220V 5x20mm
8A,110V

18
MAINTENANCE
CLEANING
●Attheendofeachworkingday,wipeanyexcessfluxand/or
solderpastefromtheequipmentwithacleancloth.
●Cleantheexposedsurfacesoftheequipment
usingsoftclothandantistaticfoamcleaner,periodically.
●CleanthelensassemblyusingIsopropylalcohol.
●Make sure that lens cloth is clean. Any solid object on the
cloth couldscratch theglasssurface andaffect functionality
ofthedevice.
CAUTION:Donotusesolventsforcleaninganypartofthe
equipmentastheymaydamagethefinish.
WARNING: All cleaning and/or maintenance
should be performed when the equipment is
switched off and disconnected from the main
powersource.Allowthesystemtocooldownat
roomtemperaturetoavoidburnsorotherdam
agesfromhotpartsofthemachine..
7
PACKAGEINCLUSION
QUANTITY PARTDESCRIPTION
1unit Aoyue720MainStation
1unit Metalpole
1unit Coolingstand
1unit Footswitch
1unit PCBholder
1unit Infrareddevice
1pc Infraredlamp
1pc Protectivelens/shield
1pc Weldinggoggles
1pc Aoyue2900solderingpen
1pc LF2Bsolderingtip
1pc LFKsolderingtip
1pc Heatresistantpad
1pc 939suctionpen
1pc ICextractor
1pc Fluxgel
1pc Powercord
1pc Aoyue720Manual

8
SPECIFICATIONS
MAINCONTROL
PowerInput: Availablein110V/220V
Frequency: 50Hz
TotalCurrent: 4.6A
MainControl: 390(l)x270(w)x92(h)mm
INFRAREDSOLDERLIGHTGUN
PowerConsumption: 200W
TemperatureRange: 100°C450°C
HeatingElement: HalogenLightSource
PREHEATER
PowerConsumption: 650W
TemperatureRange: 100°C500°C
HeatingElement: QuartzInfrared
SOLDERINGIRON
PowerConsumption: 70W
TemperatureRange: 200°C480°C
HeatingElement: CeramicHeater
OutputVoltage: 24V
17
CAREandSAFETYPRECAUTIONS
CAUTION:Improperusagecancauseinjuryandphysicaldamage.
Foryourownsafety,pleaseobservethefollowingprecautions.
●Temperaturemayreachashighas500°CwhenturnedON.
Donottouchthewhiteceramicheatingelementinsidethe
preheater.
Donotexposenakedeyetotheinfraredlight.This
cancauseseriousdamageoftheeye.
Donotexposeskintoinfraredlightforalongperiod.
Exposureforalongdurationmaydamagetheskintissue.
●Securefootswitchandensurethatnothingcanrestorfallonit.
●Handlewithcare
Neverdroporsharplyjolttheunit.
 Contains delicate partssuch as IR lamps that may break if
theunitisdropped
Donotspillanyliquidtothesystem.
●Donottampertheelectricalcontrolunitoranywiringinside
●thedevice.Thismaycausesevereelectricshock.
●Disconnectplugfrommainpowersourceifthedevicewillnotbe
usedforalongperiod.
 Turnoffpowerduringbreaks,ifpossible.
●Allowample timefortheequipmentto cooldown beforecom
mencingmaintenance.
●Useonlygenuinereplacementparts.Turnoffpowerandletthe
unitcooldownbeforereplacinganycomponent.

16
TECHNICALDESCRIPTION
SYSTEMHEATINGPROCESS
The heating process of the Focused Infrared Welding system is a
combinationoftheIRsolderlightgunandthepreheater.Thepre
heatercandeliver200°upto480°CtothePCB,pads,andleadsof
thecomponent.TheIRsolderlightgunfurtherincreasesthetem
peratureuntilreflowisreached.
INFRAREDLAMP
The200WattInfrared(IR)lampislocatedinsidethelamphousing
andclampedonametalrod,whichissecuredontopofthemain
unit.ThelampemitsshortwaveIRradiationatapproximately1.0
microninwavelength.
TOPHEAT
ThetopheatisproducedbytheIRsolderlightgun.Thisincreases
whilefocusingtheheatonthedesiredcomponentbeingreworked.
This also brings the solder joint temperature higher in order for
heattoreflow.
PREHEATER
The preheater provides and maintains distributed heat (or Back
Heat) across the PCB and components prior to actual reworking.
ThisprotectsthePCBfromdelaminatingandthecomponentsfrom
thermal shock — brought by sudden exposure to high tempera
ture. About approximately 75% of heat energy is supplied by the
preheaterandtheremaining25%bytheinfraredsolderlightgun.
9
OPERATINGPROCEDURES
PREPARINGTHEEQUIPMENT
1. Place the equipment on a flat stable surface of at least one
squaremeterandaheightsuitabletotheuser.
2. AttachtheprotectivelenstothefrontoftheIRsolderlightgun.
3. Connectthesolderingironandfootswitchasindicatedfromthe
productillustration.
4. Connect one end of the power cord to the socket found at the
backofthemainunit.
5. Therecommendedlightingconditionshouldnotbesobrightsuch
thattheIRspotisstillviewablebytheuser..
6. Theelectricitysupplymustbefreefrominterferenceofotherde
vices.
SMDREWORKINGPROCEDURE
1. Assoonasallthenecessarycomponents(e.g.,IRsolderlightgun,
solderingiron,footswitch,protectivelens)havebeenattachedto
themainunit,youarereadytostartthereworkingprocess.
2. Plugtheequipmenttothemainpowersource.
3. TurnONthe unitusingpowerswitch(‘A’fromthecontrolpanel)
locatedattherighthandsideofthefrontpanel.

10
4. WithbuttonsC1,C4,C7,andC10disabled(OFF),thedisplaypan
elswillshowthefollowing.
5. ThePCB/componenttoberepairedshouldbeplacedontopofthe
preheatingcomponent.UsethebeamstoholdthePCBandadjust
the screws to secure the placement. Make sure that the affected
component is placed at an appropriate distance, perpendicular to
the IR solderlight gun. Thiswill keep the IRlight focused only to
the component concerned. Move the temperature sensor tip near
thecomponentfortemperaturereading.
OPERATINGPROCEDURES
15
USINGTHESOLDERINGIRON
1. WiththeunitswitchedONandthesolderingplugconnectedtothe
equipmentviaterminalEfromthecontrolpanel,activatesoldering
bypushingbuttonC10.
2. AdjustthesolderingirontemperatureusingbuttonsC11andC12.
3. Waitforafewsecondswhilethesystemisadjustingthesoldering
irontemperaturetothedesiredvalue.Youwillheara“beep”ora
highpitchsoundwhenthetemperatureisreached.
4. Whenworkisfinished,deactivatesolderingswitch.
5. TurnOFFtheunit.
6. Unplugthedevicefromthemainpowersource.
NOTE: The soldering iron temperature is configurable from 200 to
480C,with350Casthedefault.
USINGTHEFOOTSWITCH
1. Before reworking, make sure the unit is switched ON, the foot
switchconnectedtothedeviceviafootswitchplug,Ffromthecon
trolpanel,thePCBisproperlyplacedontopoftheequipment,and
thepreheattemperatureisreached.
2. Set the temperature by temporarily activating IR welding switch,
C1, and increase or decrease the desired reworking temperature
usingbuttonsC2andC3.
3. Oncetemperatureisset,deactivateC1.
4. Steponthefootswitchtostartreworking.
5. Whenfinished,turnoffthedevice.
6. Unplugtheunitfromthemainpowersource.
OPERATINGPROCEDURES

14
OPERATINGPROCEDURES
B.AutomatedweldingusingtheFOOTSWITCH
1. Before reworking, make sure the unit is ON, the footswitch con
nected to the device via footswitch plug, F, the PCB is properly
placed on top of the equipment, and the preheat temperature is
reached.
2. Set the temperature by temporarily activating IR welding switch,
C1, and increase or decrease the desired reworking temperature
usingbuttonsC2andC3.
3. Oncetemperatureisset,deactivateC1.
4. Set the reworking time by selecting buttons C5 and C6 from the
controlpanel.Notethatthetimeisinsecondsunit.
5. Activateautomateswitch,C4.
6. The countdown will startwhen youstep on the foot switch. Re
leasingthefootswitch,ontheotherhand,willholdthecount.This
willresumewhenyousteponthefootswitchagain.
NOTE: Timeisconfigurablefrom20to9999secondswitha20second
increment.
USINGTHERESETBUTTON
IMPORTANT: BecarefulinusingtheRESETbuttonasthiswillremove
all previouslydefinedconfigurations.Thiswill alsorestorethesystem
defaultvaluesasfollows:
IRsolderlightguntemperature: 90C
Automatetime: 300sec.
Preheattemperature: 200C
Solderingirontemperature: 350C
11
6. StartthepreheaterbyenablingorturningONbuttonC7fromthe
panel. The preheater will gradually increase the temperature to
200C,whichisthedefaulttemperaturevalue.Youmayfurtherin
creaseordecreasethetemperaturebypushingbuttonsC8andC9.
NOTE: If the preheating temperature display panel, D3, shows
“OFFC”duringthecourseofpreheating,pushtheRESETbutton,
B,toshowagaintheactualpreheattemperaturevalue.
7. Oncethedesiredpreheat temperatureisreached,youmaystart
the IR solderlight gun. Push button C1 from the control panel to
activate this. The infrared temperature display, D1, should show
somethinglikethefigurebelow.
The upper halfofthedis
playindicatesthedefaultoutputvalueoftheIRsolderlightgun,
whichis90C.Thelowerhalfindicatestheactualtemperaturede
livered to the component. You will notice that this value will
change frequently and will fluctuate a little above or below the
definedtemperaturelevel.UsebuttonsC2andC3toincreaseor
OPERATINGPROCEDURES

12
After the temperature has been set, the IR solderlight gun will
strikealightbeamonthecomponentforabout3secondsandwill
fadeafterwards.Thiswillrecurperpetuallyevery15secondsuntil
any of the following conditions is met: (1) the infrared welding
switch is turned OFF by the user, OR (2) once the predefined
automateweldingtimehaselapsed(see“USINGTHEAUTOMATED
WELDINGFUNCTION”),OR(3)whenthefootswitchhasbeende
activated(see“USINGTHEFOOTSWITCH”).
8. LeavetheIRsolderlightgunworkinguntilthecomponentis com
pletelydesolderedorwhenreworkingisdone.
9. Deactivate the infrared welding switch, C1, when rework is com
pleted.Notethatthesystemwillwaitforthetemperaturetodrop
to90CbeforeitcompletelyturnsOFF.Youwillalsonoticeaslight
change on the display panel like below while the temperature is
graduallydecreasing(i.e.,“Exxx”insteadof“bxxx”).
10. Deactivate the preheating button, C7, to cool down the pre
heatingelement.Thepanelwillthenshowtheinitialdisplayasin
itemnumber4onceeverythingissettled.
11. SwitchOFFtheequipmentusingbuttonAfromthecontrolpanel.
12. Unplugtheequipmentfromthemainpowersource.
OPERATINGPROCEDURES
13
REMINDERS:
●Always place the PCB on board supports or beams, with
thecomponentpositionedatthecenterofthepreheater.
●Alwaysapplyfluxtojointsbeforereflow.
●Before replacing a component, check if there is enough solder
onthe padstosoldernewcomponent.
●When replacing a component, make sure the new component
doesnothaveanybentleads.
USINGTHEAUTOMATEDWELDINGFUNCTION
IMPORTANT: TheautomatedweldingfunctionwillONLYworkifthe
infraredweldingswitchisONORwhenthefootswitchisactivated.
A. AutomatedweldingusingINFRAREDWELDINGswitch
1. Beforereworking,makesuretheunitis ON, thePCBisproperly
placedontopoftheequipment,andthepreheattemperatureis
reached.
2. SetthereworkingtimebyselectingbuttonsC5 andC6fromthe
controlpanel.Notethatthetimeisinsecondsunit.
3. ActivatetheIRweldingtemperatureusingbutton,C1,andadjust
thetemperaturebyselectingbuttonsC2andC3.
4. Activateautomateswitch,C4.
5. TheIRsolderlightgunwillworkuntilthetimehaselapsed.
NOTE:
●Time is configurable from 20 to 9999 seconds with a 20second
increment.
●ThecountdownwillpauseifC1buttonisdisabledwhileC4isON.
ItwillresumeonceC1isenabledagain.
OPERATINGPROCEDURES