Error Message: 18 Upper MIO or Lower MIO
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| HP Error Code |
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18 Upper MIO or Lower MIO |
| Printers Affected |
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4Si |
| Description |
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The upper MIO card is initializing. During initialization the MIO is not active, but since the printer supports I/O switching, the printer remains on line and displays this status message. No action required. Display clears automatically (this can take up to a minute, depending upon the card. |
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