Xerox Phaser 3155 Service Manual

2-20 Phaser 3140/3155/3160 Printer Service Manual
Theory of Operation
Laser Unit
The Laser Unit receives image data from the PVC or HPVC and makes the latent
image on the OPC surface. The Laser Unit uses a single beam system.
The errors related to the Laser Unit are shown in the table below:
LSU Error Recovery
If the LReady or Hsync error happens, the paper exits out beforehand. The engine
mode is changed to recovery mode and the engine informs the main system of the
engine mode. The engine checks the Laser Unit error, and if the error doesn’t recur
the printing job will proceed.
Error Description
LReady When printing starts, the engine drives the polygon
motor of the Laser Unit. If the motor is not in a ready
status after a specified period of time elapses, the
engine detects the error that the polygon motor is not
in a ready status. If this error occurs, the engine stops
all functions and remains in the error state. The red
LED is illuminated to inform the error status to the
user.
Hsync This error occurs when the Polygon Motor speed is
steady but the Hsync is not generated.
When the polygon motor is ready, the Laser Unit sends
a Hsync signal that synchronizes each image line. If
the engine does not detect the signal consecutively
over a fixed time, it defines the Hsync Error. If this
error occurs, the engine stops all functions and
remains in the error state. The red LED is illuminated to
inform the error status to the user.
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Xerox Phaser 3155 Specifications

General

Color	No
Maximum resolution	600 x 1200 DPI
Time to first page (black, normal)	8 s
Print speed (black, normal quality, A4/US Letter)	24 ppm
Internal memory	8 MB
Maximum internal memory	- MB
Total input capacity	250 sheets
Total output capacity	80 sheets
Maximum duty cycle	12000 pages per month
Page description languages	GDI
Maximum print size	210 x 297 mm
Media weight (tray 1)	60 - 163 gsm
Paper tray media types	Plain paper
ISO A-series sizes (A0...A9)	A4, A5
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 105 g/m²
Custom media sizes	76 x 127 mm - 216 x 356 mm
Compatible operating systems	Windows 2000/XP/2003 Server/2008 Server, Vista, Mac OSX 10.3-10.6, Linux OS
Sustainability certificates	ENERGY STAR
Power consumption (standby)	60 W
Power consumption (printing)	360 W
Display	-

Weight and Dimensions

Dimensions (WxDxH)	360 x 389 x 230 mm