Ricoh LDD250, Service Manual

Page: 419 / 459

PAPER FEED
SM 6-97 C262/C265
Detailed
Des
cription
s
Paper Amount Detection
The combination of on/off signals from the remaining paper sensors 1, 2 and 3 ([A]
[B] [C]) and the paper table lower limit sensor [D] detect the amount of paper on the
paper feed table.
The machine checks the amount of paper when the paper feed table moves up and
the paper height sensor turns on.
There are 5 levels (0, 25, 50, 75, 100%), and the current level can be checked with
a network utility.
Amount Height Amount 1 [A] Amount 2 [B] Amount 3 [C] Lower limit [D]
25 ％
ON ON OFF/ON
*1
OFF/ON
*1
OFF
50
％
ON OFF ON OFF/ON
*1
OFF
75
％
ON OFF OFF ON OFF
100 ％
ON OFF OFF OFF OFF/ON
*1
*1
: Either OFF or ON
NOTE: The paper end sensor detects when the level gets to 0%.
The data from the remaining paper sensors is stored when the paper feed tray
goes down after printing, and the machine continues to display the correct amount
of remaining paper.
But, in the following situations, the machine does not detect the paper amount.
Because of this, the machine displays a temporary amount until the next detection.
•
When paper is taken off or added to the paper feed table.
•
When power turns on or after recovery from energy saver mode.
C262D093.WMF
[A]
[B]
[C]
[D]