Samsung DV448AEP - There is an abnormal noise in the dryer.

Troubleshooting _ 35
■ There is an abnormal noise in the dryer.
Itisnormal.
Reassemblethedoorseal.
(Checktheassembledconditionofthedoor
sealandcheckthedoorlever)
Doyouheara
whistlingsoundfrom
thedoorseal?
No
Yes
1. Checktheroller.
(Checktherollerthatsupportsthedrum
and rotates)
2. Checkthedrum.
(Checkifthedrumweldingiscracked)
Doesthenoisecome
fromthedrum?
No
Yes
1. Checktherotatingpartoftheidler.
(Idlerbracketbending,bracketscrew)
2. Removeanyalienparticleonthewingsof
thefan.
(Noisecanbegeneratedfromthe
unbalanceofthefanduetoalienparticle
onthefan.Checkthetightenedcondition
ofthenut.)
Isthereanabnormal
noiseinthemotor
part?
No
Yes
1. Noisefromdrumbackandheaterduct
movement.
(Changethecontactingpartandcheck
thescrewxation)
2. Vibrationofheaterheatwire.
(Checkthexationpartoftheheatwire)
Isthereanabnormal
noisefromtheheater
part?
No
Yes