Paper Empty Detection Control - Develop ineo+ 6500 Service Manual

4. PAPER FEED SECTION
4.3.2

Paper empty detection control

• A paper empty status can be detected by on/off statuses of the upper limit sensor (PS109) [6] and the
paper empty sensor (PS108) [1].
• When paper is loaded on the tray, the paper pushes the actuator [2] up as the paper lift plate [4] moves
upward and PS108 [1] turns on. Further upward movement of the plate pushes the actuator [5] up and
turns PS109 [6] on.
• When no paper exist on the tray, the actuator [2] of PS108 [1] goes into the hole [3] of the paper lift plate [4]
instead of being pushed up, and only the actuator [5] is pushed up to turn PS109 [6] on. The status (PS108
is off and PS109 is on) is judged as a paper empty status, and an arrow mark (
displayed on the touch panel of the main unit.
• When the tray runs out of paper while feeding paper, the status is detected when the PS108 becomes off
with PS109 kept on.
[6]
[5]
[1] Paper empty sensor (PS108)
[2] Actuator of PS108
[3] Hole
14
Theory of Operation Ver1.0 Sep.2006
) appears on the tray mark
[1]
[4] Paper lift plate
[5] Actuator of PS109
[6] Upper limit sensor (PS109)
[2]
[3]
[4]
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