Samsung DV400EWHD Series Service Manual page 34

● The lamp does not work.
Is the door S/W
structurally on/off?
Yes
Is the power
connection normal?
Yes
Is the lamp normal?
Yes
Check if the input voltage is
properly coming in.
Neutral
L2 L1
Earth
Replace the door S/W.
No
(Door operation of door S/W)
Connect the power properly.
No
(Check the connection between terminal
block and door S/W)
Replace the lamp.
No
(Check for disconnection of lamp and socket)
COM
NO
NC
Troubleshooting _ 33