LG DP-3510 YYDA Service Manual page 21

Delta Elec. Inc.
Check the
projection
Screen
Yes
Check using all black/white screens with
PC connection
Yes
Are abnormalities
noticeable on
projection screen?
No
Does the lamp
go off during
operation?
No
Yes
Is LAMP Light again?
No
Over Temp LED:
ON
No
System OK
Normal operation
Company Confidential
21
DP-3510 YYDA & DP-2510 YYDA
• Black lines on screen (horizontal and vertical)
→ DMD Set malfunction
Yes
• Missing pixels (Missing white: 1 or more, missing black: 5 or more, or
sequence missing pixels)
→ DMD Set malfunction
• Shadows on screen
→ Dirt on DMD/projection lens surface
• Bluish shadows on corners of screen (during white screen display)
→ Shifted optical axis of Lens Base Unit
Yes
• Lamp malfunction
• Power Supply Unit malfunction
• Temperature protector operated due to the increase in
Yes
temperature based on operating environment
• Temperature protector operated due to blocked
suction and exhaust holes or dirty fan
LGE_______________________
No
No
No
Delta____________
rev.00
2007/11/30