Detecting The Level Of Paper - Canon imageRUNNER 7095 Service Manual

Chapter 8

8.4.3 Detecting the Level of Paper

The machine indicates the level of paper inside the deck and the cassette in four readings (including No
Paper) on the control panel.
Level of paper
100% to about 50% of capacity
about 50% to about 10% of capacity
about 10% of capacity or less
No paper
In the case of the deck right/left, two sensors are used to detect the position of the deck, and combinations
of the states of the sensors (on/off) are used to find out the level of paper.
For the absence of paper, an exclusive sensor is used.
Main controller PCB
Paper level
100% to about 50%
About 50% to about 10
About 10% or less
None
In the case of cassette 3/4, the resistance of the variable resistor operating in conjunction with the move-
ment of the lifter drive shaft is used to find out the level of paper.
8-10
T-8-7
DC controller PCB
F-8-15
T-8-8
Deck right
[1] Sensor [2] Sensor
(PS51) (PS52)
ON ON
OFF ON
OFF OFF
OFF OFF
Indication on control panel
[2]
[1]
Paper level Paper level
(100% to (about 10%
about 50%) or less)
Deck left
Sensor [1] Sensor
(PS22) (PS54)
OFF ON
OFF OFF
OFF OFF
ON OFF
[2] [2]
[1] [1]
Paper level
(about 50% to
about 10%)
[2] Sensor Sensor
(PS55) (PS32)
ON OFF
ON OFF
OFF OFF
OFF ON
0010-8202