Samsung DV5451AEW - 4-3. Trouble diagnosis

Troubleshooting _ 29
■ System Check Mode
■ TEST MODE
PowerOnstate
(Normalusermode)
Wrinkle Prevent +
Dry Level 7 SEC
SystemCheckMode
DenitionofServiceMode:
• -“t2”willdisplay.
• SystemCheckMode(t2mode)ProgressFunctionPerformedStart/PauseMotor(CW)RelayOn→HeaterRelayOn
→HeaterRelayOff,Motor(CW)RelayOff
How to Enter :
• WhileinPowerOff,pressingtheDryLevel+PowerkeyssimultaneouslywillputthedryerintotheSystemCheck
mode.
4-3. TROUBLE DIAGNOSIS
Asthemicomdrymachineisconguredforthecomplicatestructure,theremightbeaservicecall.
Thebelowinformationispreparedforexacttroublediagnosisandsuitablerepairguide.
■ Caution for the repair and replacement
Please follow below instruction for the trouble diagnosis and parts replacement.
1. Assomeelectroniccomponentscanbedamagedbystaticelectricityfromtheresinpartofdryerorthehumanbody,
removethepotentialdifferenceofthehumanbodyandthedryerbycontactingthepowerplugbeforeyoustart
workingatPCB.
Powersupplyplug
2. SinceAC220~240VisappliedtothetriacT1andT2onP.C.B,theelectricshockmayoccurbytouching.Becareful
thestrongandweakelectricityaremixedeachother.
3. AstheP.C.Bassemblyisdesignedfornotrouble,donotreplacetheP.C.Bassemblybythewrongdiagnosisand
followtheprocedureofthetroublediagnosiswhenthemicomisnotoperatednormally.
No Problem What to do
1 WillNotStartorRun
• Allwiresarehookeduptotheircorrespondingterminals.
• Isthedryerispluggedin.
• Blownfuseorcircuitbreaker.
• IstheDoorswitchfunctional...doorclosed.Checkforerrorcode3(SeeTableforcode
denition).
• Start/Pauserotaryselectordialfunctional.
• IsthecontrolBoardoperational.
• BeltofforbrokenandBeltCut-offSwitchoperates.
• Isthemotorfunctional.
• Checkmotorwindingresistance:2.88ohmsbetweenpin#3and4,3.5ohmsbetweenpin#4
and 5.
2
Motorruns/tumblerwillnot
turn
• Beltofforbroken/damaged.
• Idlertensionspringtooweakorstretched.
• Idlerpulleyjammedorstuck.
3
Runsafewminutesandthen
stops
• Lintbuilduparounddrivemotor.
• Lowvoltagepresent.
• Blowerimpellerblockedinblowerhousing.
• Checktheactuatorofmotor.