Samsung DV220AEW 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 socket
normal?
Yes
Is the lamp normal?
Yes
Check if the input voltage is
properly coming in.
Neutral
L2 L1
Earth
32 _ Troubleshooting
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 socket.
No
(Check the lamp socket for damage or loose
connection)
Replace the lamp.
No
(Check for disconnection of lamp and socket)
COM
NO
NC