3M X21i - Symptoms and Solutions Table

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3M™ Digital Projector X21i/X26i
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Resetting all settings
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Troubleshooting
Symptoms that may be mistaken for machine defects
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Symptom Solution
Reference
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The electrical power cord is not plugged in.
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The main power source has been interrupted during
operation such as by a power outage (blackout), etc.
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Either there is no lamp and/or lamp door, or either of
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The signal cables are not correctly connected.
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Signal source does not correctly work.
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The input changeover settings are mismatched.
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The BLANK function for pictures and the MUTE
function for sounds are working.
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