Ricoh D124-17 Service Manual page 20

Front Cover Switches
• The front cover (1) can be raised to remove paper jams and to load paper for bypass feeding.
• The left front cover switch (2) and right front cover switch (3) are push-switches that detect when the
front cover is raised and lowered.
• The guide pins on either end of the front cover are set in tracks which guide the cover into the
correct closed position. The front cover track switch (4) (a push-switch) has been added to ensure
that these guide pins are inserted correctly into the left and right track.
• The machine cannot operate until the front cover is down and all three of these switches are closed.
Ink level detection
An OCFS (On Carriage Filler Sensor) system constantly monitors the ink level of each sub tank for each
color. This is described in detail in later sections.
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