Control; Paper Size Control; Ros Control - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

2.6 Control

2.6.1 Paper Size Control

PAPER FEED FROM PAPER CASSETTE
Table. 2-3 below indicates ON (1)/OFF (0) of the paper size switches corresponding to
the paper size in the PAPER CASSETTE.
Table 2-3. ON (1)/OFF (0) of Paper Size Switches
Paper Size
No cassette
Executive SEF
B5(JIS) SEF
A5 SEF
Legal14"SEF
Letter SEF
A4 SEF
Legal13"SEF
Note : The Switches in the Size Switch are "SW1", "SW2", "SW3" and "SW4" in this order,
starting from the Front side.

2.6.2 ROS Control

TURNING OF SCANNER MOTOR
Turning ON/OFF of the Scanner Motor is controlled as described in
depending on the operation mode:
Table 2-4. Turning of Scanner Motor
Operation Mode
Standby mode Always OFF
Scanner Motor turns ON upon receiving signal from Controller,
Printing mode and turns OFF after a lapse of ten seconds counted from
completion of printing operation.
Power-save mode Always OFF
Operating Principles
Paper Size Switch
SW1 SW2 SW3 SW4
0 0 0 0
0 0 0 1
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 1 0 1
1 1 1 1
Table. 2-4
Turning ON/OFF of Scanner Motor
The following table indicates the Scanner Motor speeds corresponding to the
resolutions.
Process Speed
204 mm/s
dpi (dots per inch)
rpm (revolutions per minute)
NOTE: A laser beam is scanned per plane (entire plane) of the Polygon Mirror.
WARM-UP OF ROS
As soon as the ROS starts warming up, the Scanner Motor starts running. When the
interval of the SOS signal sampled every 100ms is shorter than the Ready reference
value three consecutive times, the ROS ends warming up (the Scanner Motor runs at
constant speed.)
REFERENCE VALUE OF ROS
Reference Value of ROS
"Ready" reference value
"Fail" reference value
NOTE: Against runaway of Scanner Motor, [U2] is detected by "Fail" reference
value when laser beam does not enter SOS Sensor because of an increase
of 1% or more in speed.
below
Control
Scanner
Resolution
Corresponding
600 dpi 24, 094. 49 rpm
Table 2-5. Reference Values of ROS
Description
SOS signal interval corresponding to 98% or more of
operating speed of Scanner Motor
SOS signal interval corresponding to 90% or less of
operating speed of Scanner Motor
Revision C
CLK Signal
Frequency
2, 409. 449 Hz
59
Confidential