Ricoh Aficio AP900 Operating Instructions Manual page 20

Guide to the Printer
9.
{Escape} key
Press this key to return to the previous condition on the display.
10. {# Enter} key
Used to confirm or apply settings to proceed to the subsequent steps.
11. {U} {T} keys
Use to increase or decrease displayed values when making settings. Keep pressed to
quicken scrolling, and increase or decrease values displayed in increments of 10.
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