EPSON EPL-N3000/AcuLaser M4000N
Revision C
Operating Principles
Control
59
Confidential
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.
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
Table. 2-4
below
depending on the operation mode:
The following table indicates the Scanner Motor speeds corresponding to the
resolutions.
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
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.
Table 2-3. ON (1)/OFF (0) of Paper Size Switches
Paper Size
Paper Size Switch
SW1
SW2
SW3
SW4
No cassette
0
0
0
0
Executive SEF
0
0
0
1
B5(JIS) SEF
0
0
1
1
A5 SEF
0
1
0
1
Legal14"SEF
0
1
1
1
Letter SEF
1
0
0
1
A4 SEF
1
1
0
1
Legal13"SEF
1
1
1
1
Table 2-4. Turning of Scanner Motor
Operation Mode
Turning ON/OFF of Scanner Motor
Standby mode
Always OFF
Printing mode
Scanner Motor turns ON upon receiving signal from Controller,
and turns OFF after a lapse of ten seconds counted from
completion of printing operation.
Power-save mode
Always OFF
Process Speed
Resolution
Scanner
Corresponding
CLK Signal
Frequency
204 mm/s
600 dpi
24, 094. 49 rpm
2, 409. 449 Hz
Table 2-5. Reference Values of ROS
Reference Value of ROS
Description
“Ready” reference value
SOS signal interval corresponding to 98% or more of
operating speed of Scanner Motor
“Fail” reference value
SOS signal interval corresponding to 90% or less of
operating speed of Scanner Motor
Содержание AcuLaser M4000N
Страница 1: ...EPSON EPL N3000 AcuLaserM4000N A4 Monochrome Laser Printer SERVICE MANUAL SEPG03004 Confidential ...
Страница 19: ...Confidential C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 33: ...Confidential C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 63: ...Confidential C H A P T E R 3 TROUBLESHOOTING ...
Страница 160: ...Confidential C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 396: ...Confidential C H A P T E R 5 ADJUSTMENT ...
Страница 404: ...Confidential C H A P T E R 6 MAINTENANCE ...
Страница 408: ...Confidential C H A P T E R 7 APPENDIX ...