Ricoh D3EW, Field Service Manual

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2.Detailed Descriptions
137
Remaining Paper Detection
The paper remaining is detected by counting pulses of the LCIT lift motor [A], and is shown in a four-
stage display on the operation panel.
When the bottom plate is lower than the paper height middle sensor [B], the remaining indicator is
affected by the pulse count that starts when the plate passes the lower limit sensor [C]. When the stack
of paper is finished, the bottom plate moves up and passes the paper height middle sensor, and the
indicator is affected by the pulse count that is reset and restarts when the plate passes the paper height
middle sensor.