3M X21i Operator's Manual page 104

3M™ Digital Projector X21i/X26i
Troubleshooting
Symptoms that may be mistaken for machine defects (continued)
Reference
Symptoms Solution
page
The projector does not recognize the USB storage
device inserted into USB TYPE A port.
USB TYPE A
The FREEZE function is working.
FREEZE
Color settings are not correctly adjusted.
COLOR SPACE setting is not suitable.
The brightness and/or contrast are adjusted to an
extremely low level.
The projector is operating in Eco mode.
44
The lamp is approaching the end of its product
lifetime.
Either the focus and/or horizontal phase settings are
not properly adjusted.
The lens is dirty or misty.
Caring for the
lens
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