Samsung Xpress C480 Series - Engine F;W Control Algorithm

2.Productspecicationanddescription
2.2.6.EngineF/WControlAlgorithm
2.2.6.1.Feeding
Iffeedingfromacassette,thedriveofthepickuprolleriscontrolledbycontrollingthesolenoid.Theon/offofthe
solenoidiscontrolledbycontrollingthegeneraloutputportortheexternaloutputport.Providedbelowarethejam
conditionsforthedevice:
ItemDescription
PaperJamin
Tray1
•Afterpaperpickupinitialization,thepaperisnotfed.
•Afterpickingupthepapertheleadedgedoesnotreachtothefeedsensorwithinapredetermined
periodoftime,duerollerslippage,etc.
•Afterpickingupthepaperfromthecassette,ifthefeedsensorisnotdetected,are-pickup
initializationoccurs.Afterre-pickingup,ifthefeedsensorisstillnotonafterapredetermined
amountoftime,JAM0occurs.
•Eventhoughthepaperreachestothefeedsensor,thefeedsensordoesn’tnotchangestate.
PaperJam
inside
machine
•Aftertheleadingedgeofthepaperpassesthefeedsensor,thetrailingedgeofthepaperdoesnotclear
thefeedsensorafterpredeterminedperiodoftime.
•Afterthetailedgeofthepaperpassesthefeedsensor,theleadedgeofpaperisnotdetectedbytheexit
sensorwithinapredeterminedperiodoftime.
Paperjamin
exitarea
Thetailedgeofthepaperdoesnotcleartheexitsensorwithinapredeterminedperiodoftime.
2.2.6.2.Transfer
Thechargingvoltage,developingvoltageandthetransfervoltagearecontrolledbyPWM(PulseWidthModulation).Each
outputvoltageischangeableduetothePWMduty.Thetransfervoltageprovidedwhenthepaperpassesthetransferroller
isdecidedbyenvironmentconditions.TheresistancevalueofthetransferrollerischangedwhentheTemperatureand
HumiditySensorinthedevicesensesachangeintheenvironment.ThecurrenttotheTransferRollerischangedthroughthe
ADconverterontheHVPS.Thevoltagevalueforprovidedtothetransferrollerisdecidedbythechangedvalue.
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