3M X31 - Page 96

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3M™ Digital Projector X31/X36/X46
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Troubleshooting
Phenomena that may be easy to be mistaken for machine defects (continued)
Phenomenon Cases not involving a machine defect
Reference
page
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The signal cables are not correctly connected.
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The MUTE function is working.
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The volume is adjusted to an extremely low level.
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The AUDIO SOURCE/SPEAKER setting is not correct.
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The mode selected for HDMI AUDIO is not suitable.
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The lens cover is attached.
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The signal cables are not correctly connected.
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The brightness is adjusted to an extremely low level.
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The computer cannot detect the projector as a plug and play monitor.
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The BLANK screen is displayed.
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The USB TYPE B port is selected as the picture input
source even if MOUSE is selected for USB TYPE B.
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The projector does not recognize the USB storage
device inserted into USB TYPE A port.
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