3M X30 - Phenomena that May be Easy to be Mistaken for Machine Defects

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Troubleshooting
Phenomena that may be easy to be mistaken for machine defects
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Phenomenon Cases not involving a machine defect
Reference
page
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The electrical power cord is not plugged in.
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11
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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9
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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44
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