2A3/4
1-3-76
(12-4) Detecting the paper level
The lift rises as paper in the deck is used. When the remaining number of sheets in
either right or left cassette reduces to around 100 to 250 sheets, the projection on the lift
belt assembly pushes against the sensor lever which turns the relevant paper level
detection sensor 1 or 2 (PLDSENS1/2) on.
When both paper level detection sensors 1 and 2 (PLDSENS1, 2) have turned on, the
message “Low on paper.” is shown on the copier touch panel. This message is not
shown when only one of them is on.
As more copies are made with the message on, paper path sensors 1, 2 and 3
(PPSENS1, 2, 3) or the paper empty sensor (PESENS) start to detect absence of
paper, and the message on the copier touch panel changes to “Place paper in deck.”
Lift belt
assembly
Paper level
detection sensor 1
Sensor lever
Paper level
detection sensor 1
When paper level detection sensor 1 is off
When paper level detection sensor 1 is on
Lift belt assembly
Sensor lever
Figure 1-3-63 Detecting the paper level
CN2-3
CN2-6
PDMPCB
PLDSENS2
PLDSENS1
Figure 1-3-64 Paper level detection system block diagram
Summary of Contents for Ri 4230
Page 3: ...SERVICE MANUAL Ri 4230 5230 ...
Page 13: ...4230 5230 S M MCA THEORY AND CONSTRUCTION SECTION I I Theory and Construction Section ...
Page 14: ...1 1 5 2A3 4 CONTENTS 1 1 Specifications 1 1 1 Specifications 1 1 1 ...
Page 100: ...4230 5230 S M MCA ELECTRICAL SECTION II II Electrical Section ...
Page 119: ......
Page 138: ......
Page 159: ...4230 5230 S M MCA III Set Up and Adjustment Section III SET UP AND ADJUSTMENT SECTION ...
Page 448: ...2A3 4 3 6 3 25 Toner scatters at the leading edge of the image See page 3 6 17 ...