3
Theory of Operation Ver. 8.0 Jun. 2008
16. Paper feed section
1
09
Composition/Operation
B. Display of paper supply level
• The amount of remaining paper is indicated by the LED on the right side of each tray and
by the screen of the control panel.
• The following shows how the level is displayed.
*1: LED turns OFF when Paper Remainder is set to Type 2: Service Mode
o
System 1
o
Machine State LED Setting
o
Paper Remainder.
C. Paper supply level detection control
• Paper supply level is detected by calculation of the paper remaining level based on the
time when the tray is lifted.
• Plain paper is used as the reference of the calculation for the paper supply level.
• When the thick paper is set, off set value is used to calculate the paper supply level.
Ex: When thick paper 2 is set, paper supply level is calculated as a half of the plain paper
level.
• Lifting time is measured when the power is turned ON, save mode is released and a tray
is inserted.
Tray condition
Empty
Near empty *1
Other statuses
(Including during lift-up and no tray conditions)
LED
ON
Blinking
OFF
3
A00JT2C269AA
Tray3 empty LED
Tray4 empty LED
Tray condition
Paper full
Paper near full
Paper remained
Paper supply level
100 to 66%
65 to 33%
33% to 51 sheets
Tray3 paper supply level
1500 to 1000 sheets
999 to 501 sheets
500 to 51 sheets
Tray4 paper supply level
1000 to 666 sheets
665 to 334 sheets
333 to 51 sheets
Y107522-3 Theory of Operation
