Delta Elec. Inc.
EP7155i & EP1691i
Company Confidential Optoma_______________________ Delta____________
24
2010/01/11
Yes
Yes
Yes
• Lamp malfunction
• Power Supply Unit malfunction
• Black lines on screen (horizontal and vertical)
→
DMD Set malfunction
• 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
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: OFF
Lamp: OFF
Temp: ON (RED)
Is
LAMP
Light again?
System OK
Normal operation
•
Temperature protector operated due to the increase in
temperature based on operating environment
• Temperature protector operated due to blocked suction and
exhaust holes or dirty fan
Yes
No
No
Yes
Yes
No
No
