63
Phenomenon Cases not involving a machine defect
Reference
page
Pictures appear 
dark.
The brightness and/or contrast are adjusted to an 
extremely low level.
Adjust the BRIGHTNESS and/or the CONTRAST settings to 
a higher level using the menu function.
26
The ECO MODE function is working.
Select the NORMAL for the ECO MODE item in the SETUP 
menu.
34
The lamp is approaching the end of its product 
lifetime.
Replace the lamp.
53, 54
Pictures appear
blurry.
Either the focus and/or horizontal phase settings are 
not properly adjusted.
Adjust the focus using the focus ring, and/or the H PHASE 
using the menu function.
18, 30
The lens is dirty or misty.
Clean the lens referring to the section “Caring for the lens”.
56
RS-232C does 
not work.
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the SETUP 
menu.
35
• Although bright spots or dark spots may appear on the screen, this 
is a unique characteristic of liquid crystal displays, and it does not constitute or 
imply a machine defect.
NOTE
Phenomena that may be easy to be mistaken for machine defects (continued)
Troubleshooting