LG AB110, Service Manual

Page: 20 / 66

Rev. 09
Company Confidential LG_______________________ Delta____________
19
2006/09/14
Yes
Yes
Yes
1. Check Lamp malfunction.
2. Check Power Supply Unit malfunction.
1. Check Black lines on screen (horizontal and vertical).
→
DMD Set malfunction.
2. Check Missing pixels (Missing white: 1 or more, missing black: 5 or more,
or sequence missing pixels).
→
DMD Set malfunction.
3. Check Shadows on screen.
→
Dirt on DMD/projection lens surface.
4. Check Bluish shadows on corners of screen (during white screen display).
→
Shifted optical axis of Lens Base Unit.
Check the
projection
Screen
Check using all black/white screens with
PC connection
Are abnormalities
noticeable on
projection screen?
Does the lamp
go off during
operation?
POWER: 3 Blinks
POWER : ON
READY : Blink 60 sec
System OK
Normal operation
1. Check Temperature protector operated due to the increase in
temperature based on operating environment
2. Check Temperature protector operated due to blocked suction and
exhaust holes or dirty fan
Yes
No
No
No
No