Samsung DMT300 Series Training Manual page 16

Disassembly and Reassembly - 2. HEATER (2/2)
5) Lay the product down, and unscrew the 2
screws fixating the base and the shutter.
Separate the terminal of leakage sensor
terminal of the shutter.
6) After disassembling the terminal inserted to the
heater, turn the holder heater in CCW direction
to disassemble it.
7) Set the product upright and open the door to
pull out the heater. Be careful of the
interference with the heater bracket.
※ CHECK LIST
▶ Measure the resistance of the heater ends: 12Ω
(Measure after removing the connecting terminal)
▶ Check the relay connecting terminal and check the
operating signal