Read Sharp MX-CSX1 / MX-CSX2 Service Manual online
MX-CSX2 OPERATIONAL DESCRIPTIONS 4 – 6
F. Paper remaining quantity detection operation
There are four levels of the paper remaining quantity: 3 levels of
remaining quantity and paper empty.
Paper empty:
The paper tray 1 paper empty detector (DxPED) is turned ON.
When the paper remaining quantity is 2/3 - 3/3:
The paper remaining quantity detector (DxULD) is not turned ON
when paper on the paper feed tray is lifted up and the paper feed
tray upper limit detector (DxPED) detects paper on the top and lift-
ing is stopped.
When the paper remaining quantity is 2/3:
The paper remaining quantity detector (DxULD) is turned ON when
paper on the paper feed tray is lifted up and the paper feed tray
upper limit detector (DxPQD) detects paper on the top and lifting is
stopped.
When the paper remaining quantity is 1/3 or less:
The paper remaining quantity detector (DxPQD) is turned ON once,
and then turned OFF.
remaining quantity and paper empty.
Paper empty:
The paper tray 1 paper empty detector (DxPED) is turned ON.
When the paper remaining quantity is 2/3 - 3/3:
The paper remaining quantity detector (DxULD) is not turned ON
when paper on the paper feed tray is lifted up and the paper feed
tray upper limit detector (DxPED) detects paper on the top and lift-
ing is stopped.
When the paper remaining quantity is 2/3:
The paper remaining quantity detector (DxULD) is turned ON when
paper on the paper feed tray is lifted up and the paper feed tray
upper limit detector (DxPQD) detects paper on the top and lifting is
stopped.
When the paper remaining quantity is 1/3 or less:
The paper remaining quantity detector (DxPQD) is turned ON once,
and then turned OFF.
G. Paper feed tray section control
The option paper feed tray (the paper feed tray 2, 3, 4) are con-
trolled by the desk control PWB.
For load control, the desk control PWB outputs the control signal
according to the control data from the PCU PWB.
The sensor and detector signals are inputted to the desk control
PWB and sent to the PCU PWB.
trolled by the desk control PWB.
For load control, the desk control PWB outputs the control signal
according to the control data from the PCU PWB.
The sensor and detector signals are inputted to the desk control
PWB and sent to the PCU PWB.
The no-paper detection sensor detects
the state of no remaining paper.
the state of no remaining paper.
During no-paper detection
1/3 Field
Sensor logic: Low
Sensor logic: Low
Remaining paper 1/3 position
Remaining paper 2/3 position
Remaining paper 3/3 position
2/3 Field
Sensor logic: Hi
Sensor logic: Hi
3/3 Field
Sensor logic: Low
Sensor logic: Low
CPED
(paper sensor)
(paper sensor)
Remaining Paper
Detection Actuator
Detection Actuator
Lift plate
CSPD
(remaining paper detection)
(remaining paper detection)
(Figure showing state transition of the remaining paper detection sensor during tray elevation and
changes in status according to the number of remaining sheets)
changes in status according to the number of remaining sheets)
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