Ricoh MP C307 Field Service Manual page 1057

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With some diagnostic items, press [Back] [A] at the bottom of the screen to return to the top menu of
[Self Check].
LED Check
Select the [All Light On] check box, and make sure the following LEDs light:
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Data In indicator (facsimile and printer modes)
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Fax indicator
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[Check Status] indicator (flashes in red and orange alternately)
When the check is completed, press [Back] to return to the top menu of [Self Check].
Key Check
Check if the Extended Feature keys on the left side of the control panel (EX1, EX2, EX3 from top to bottom) are
functioning normally. If they are functioning normally, the key will turn green when pressed.
[FOOT SW] is not used.
When the check is completed, press [End] to return to the top menu of [Self Check].
3.System Maintenance
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