Canon 2502C016 User Manual page 232

Troubleshooting
Cause
The image files are not
compatible with USB File
Browser.
The LAN cable (shielded
twisted pair) is not
connected correctly.
■ There is no Sound
Cause
The audio cable is not
connected correctly.
The MUTE function is
enabled.
The volume level is
adjusted to the
minimum.
An audio cable with a
built-in resistor is used.
Audio in terminal select
is [Off].
■ The Projected Image Is Blurred
Cause
The image is out of
focus.
The distance to the
screen is too short.
The projector is not
placed straight in front of
the screen.
The projector has been
moved to a place where
the temperature varies a
lot.
The lens is stained.
The tracking is bad.
Countermeasure
Projection from USB flash drives requires JPEG
images with a resolution not exceeding 10912x8640,
single-byte alphanumeric file names, and a FAT-
formatted drive.
When [LAN] or [HDBaseT] is selected in the [Input]
menu, check whether the LAN cable (shielded
twisted pair) is connected to the projector correctly
(P83).
Countermeasure
Check the audio cable connection (P81).
Press the MUTE button on the remote control (P39).
Press the VOL button on the remote control or the
VOL+ button on the side control to adjust the volume
level (P34, P39).
Use an audio cable without a built-in resistor.
Change the Audio In terminal to the appropriate
setting (P169).
Countermeasure
Adjust the focus (P48).
Check whether the distance to the screen is
appropriate (P63).
Check whether the projector is placed obliquely to
the screen. A slight error in the projection angle can
be corrected through the keystone adjustment
function (P103).
When the projector is moved from a location where
the temperature is low to a location where the
temperature is high, condensation may form on the
lens. The condensation will evaporate after a period
of time and the projector will be able to project a
normal image.
Clean the lens (P217).
Adjust the tracking with the [Auto PC] (P131) or
[Tracking] (P132) function.
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