127
Phenomenon Cases not involving a machine defect
Reference 
page
Pictures 
appear blurry. 
(continued)
The lens is dirty or misty.
Clean the lens referring to the section Caring for the lens.
116
Some kind 
of image 
degradation 
such as 
ickering or 
stripes appear 
on screen. 
When the projector is operating in Eco mode, 
ickering may appear on screen.
Set ECO MODE to NORMAL, and set AUTO ECO 
MODE to OFF, in the SETUP menu.
57
The OVER SCAN ratio is too big.
Adjust OVER SCAN in the IMAGE menu smaller.
50
Excessive VIDEO NR.
Change the setting of VIDEO NR in the INPUT menu.
52
The FRAME LOCK function cannot work on the 
current input signal.
Set FRAME LOCK in the INPUT menu to OFF.
54
The sound 
or image 
is unstable 
or is output 
intermittently.
When LAN, USB TYPE A or USB TYPE B port is 
selected, some parts of the output may be missing 
due to signal processing delay.
Change the signal or use another port.
26, 59
The computer 
connected to 
the USB TYPE 
B port of the 
projector does not 
start up.
The computer cannot start up in the current 
hardware conguration.
Disconnect the USB cable from the computer, then 
reconnect it after starting up the computer.
11, 12
RS-232C does 
not work.
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
58
The COMMUNICATION TYPE for the CONTROL port 
is set to NETWORK BRIDGE.
Select OFF for COMMUNICATION TYPE item in the 
OPTION - SERVICE - COMMUNICATION menu.
75, 76
Network does 
not work
The SAVING function is working.
Select NORMAL for STANDBY MODE item in the 
SETUP menu.
58
The same network address is set for both wireless 
and wired LAN.
Change the network address setting for wireless or wired 
LAN.
81, 85
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)
(continued on next page)