Sharp MX-2314N Service Manual

MX-3114N OPERATIONAL DESCRIPTIONS 13 – 21
B. Operational descriptions
(1) General
Image data sent from the LSU Mother PWB are converted into
laser beams and radiated onto the OPC drum surface. The LSU
unit is composed of : (1) the optical elements from the laser to the
polygon mirror, (2) the primary system including the mirror which
secures the optical path, (3) the optical elements including the poly-
gon mirror, and (4) the scanning system including the mirror which
secure the optical path.
(2) Composition
Primary system
Scanning system
Main scanning direction
Writing position on paper
Signal name Name Function/Operation
BD Laser beam detector Detects (monitors) the laser bean scan timing.
PGM Polygon motor Scans laser beams.
TH1_LSU LSU temperature sensor Detects the temperature in the LSU. (For correction of the LSU distortion)
No. Name Function/Operation
1 LD PWB Drives the laser diode and controls the power.
2 Colimeter lens Forms laser beams.
3f  lens 1 Equalizes the laser beam dot intervals in the main scanning direction. (Corrects the laser dot
intervals on the OPC drum.)
4f  lens 2
5f  lens 3
6 1st mirror Reflects laser beams to the OPC drum.
7 2nd mirror Reflects laser beams to the OPC drum.
8 3rd mirror Reflects laser beams to the OPC drum.
9 4th mirror Reflects laser beams to the OPC drum.
10 Cylindrical lens Leads laser beams to the polygon mirror.
11 Conversion lens for BD Converges laser beams and leads to the BD (Bean Detector).
12 Filter glass Prevents dust, toner, and foreign materials from entering the LSU.
13 LSU shutter Closes the exposure opening port in conjunction with opening of the waste toner box, preventing
dust, toner, and foreign materials from attaching.
14 Shutter ring cam Shutter closes the exposure opening port in conjunction with opening of the waste toner box.
15 BD mirror Leads laser beams to the BD (Beam Detector).
16 Skew adjustment screw (C, M, Y, K) Adjusts the radiating angle of laser beams for the OPC drum. By turning this adjustment screw,
image skew can be adjusted.
BK
C
M
Y
FRONT
REAR
Scanning
direction
FRONT
REAR
Scanning
direction
Paper exit
direction

Sharp MX-2314N Specifications

General

Print Technology	Laser
Print Speed	23 ppm
Print Resolution	600 x 600 dpi
Scan Resolution	600 x 600 dpi
Copy Speed	23 cpm
Copy Resolution	600 x 600 dpi
Fax Transmission Speed	33.6 Kbps
Duplex Printing	Yes
Connectivity	USB, Ethernet
Functions	Print, Copy, Scan, Fax
Paper Size	A3, A4, A5, B4, B5
Max Paper Size	A3
Original Size	A3