Canon AG1 Service Manual page 16

2
Technology > Controls > Overview > Paper Level Detection Control
■ Paper Level Detection Control
Paper level inside the cassette is detected by the sensors shown in the following table.
The paper level in the cassette is detected by the Cassette Lifter Motor, Cassette Paper
Sensor, Cassette Paper Surface Sensor, and Cassette Paper Level Sensor.
Cassette Paper Cassette Paper Cassette Paper
Sensor Surface Sensor Level Sensor
OFF ON OFF*
OFF ON
OFF ON
The control that switches the paper level display on the Control Panel is as follows:
• From 3 bars to 2 bars on the Control Panel:
The paper level is detected based on the time for which Cassette Lifter Motor is
continuously turned ON. Or, it is detected based on the time from when the Cassette Paper
Sensor is turned ON to when the Cassette Paper Surface Sensor is turned ON.
The paper level during paper feed is detected based on the number of times the Cassette
Lifter Plate is lifted up.
Related Service Mode
*: The paper level in the cassette is displayed by executing the following service mode.
You can adjust the timing of switching the scale from "3" to "2".
Lv.2) COPIER > ADJUST > CST-ADJ > CST-VLMX (Threshold adjustment for detecting
the level in the cassette X)
X indicates the cassette number (1 to 4).
• From 2 bars to 1 bar on the Control Panel:
The Control Panel switches to display 1 bar when the Cassette Paper Level Sensor is
turned ON.
2 Technology > Controls > Overview > Paper Level Detection Control
Display on
Paper level the Control
Panel
100% to 50%*
Approx. 50% to approx. 50
OFF
sheets
ON Approx. 50 sheets or less
Cassette Paper
Level Sensor
Paper Level
Detection Lever
Cassette
Lifter Motor
T-2-5
Lifter Gear
Lifting Plate
Cassette Paper
Detection Lever
Surface Sensor
Cassette
Paper Sensor
Paper Detection Lever
Lifting Plate
2-7
F-2-9
2-7