Paper Supply Level Detection Control; Paper Near-Empty/Paper Empty Detection - Develop QC 2235 Plus Service Manual

Paper feed section
12.3.4

Paper supply level detection control

• There is a window in the front cover of the cassette for indicating the paper supply level.
• When the Paper Lifting Plate goes up, a red lever appears in the window. The lower the
level of the paper stack, the more the red portion is visible.
Paper Supply Level Indicator in Cassette Front Cover
12.3.5

Paper Near-Empty/Paper Empty detection

• When the Paper Near-empty Sensor is blocked, a corresponding warning display is given
on the control panel.
• The paper supply level when a paper near-empty condition is detected is about 50 ± 30
sheets.
• The Paper Empty Sensor detects a paper empty condition.
Tray1
A Near-empty Condition
Tray1 Paper Near-empty Sensor (PC13)
Tray2
A Near-empty Condition
Tray2 Paper Near-empty Sensor
(PC104)
Tray2 Lift-up
Motor (M101)
QC 2235plus Theory of Operation Ver.1.0 Feb. 2004
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2-56
Lever
An Empty Condition
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Tray1 Paper Empty Sensor (PC2)
An Empty Condition
Tray2
Paper Empty Sensor (PC106)
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