Xerox Phaser 3600 Service Manual

Phaser 3600 Printer Service Manual 2-11
Theory of Operation
Laser Scan Unit (LSU) Control
The Laser Scan Unit receives the bit-mapped image data from the Main
Board and uses that information to turn the laser beam on and off as required
to correctly expose the drum. Image data transfer from the Main Board is
controlled by a synchronization signal from the LSU so the vertical scanning
line is synchronized with the printed page. The LSU contains the following
components:
■ Laser Diodes: Generates the laser beams.
■ Rotating Polygon Mirror: Scans the laser beam across the drum, axially.
■ Beam Detector: Synchronizes the left margin.
■ Optical Lens System: Focuses the laser beam onto the surface of the
drum.
■ Mirrors: Reflect the laser beam onto the surface of the drum.
Laser Light Intensity Control
Image data is transmitted to the laser diode in the Laser Scan Unit as digital
signals. The laser diode converts the image data from digital signals to optical
signals; data expressed by blinking laser beams. The Laser Scan Unit
monitors the output to determine if variations in the light intensity from the
laser beam, variations in the optical system (such as mirrors and lenses), or
variations in drum sensitivity are preventing the system from obtaining a
proper electrostatic image and, if necessary, adjusts the light intensity to
attain a stable electrostatic image.
Toner Control
Print Cartridge installation and Toner Level are detected by the Print Cartridge
Interconnect Board and the associated signals are supplied to the Main
Board. The CRUM not only detects cartridge presence, it also determines
whether it is a genuine Xerox cartridge. When the toner remaining falls to
15%, the printer displays a low toner message on the Control Panel display.
Error Description Error Message
Polygon Motor
Err
o
r
The polygon motor speed cannot
obtain a steady state.
Laser Failure
Hsync Error The polygon motor speed is steady,
but t
he Hsync signal is not generated.
Laser Failure

Xerox Phaser 3600 Specifications

General

Color	No
Duplex printing	Yes
Print technology	Laser
Maximum resolution	600 x 600 DPI
Warm-up time (from sleep mode)	31 s
Print speed (black, normal quality, A4/US Letter)	38 ppm
Internal memory	32 MB
Maximum internal memory	512 MB
Total input capacity	600 sheets
Total output capacity	250 sheets
Maximum input capacity	1100 sheets
Paper tray 2 input capacity	500 sheets
Functions	Print
I/O ports	Parallel (IEEE 1284), USB 2.0
Device manager	DHCP, Xerox CentreWare Internet Services Embedded Web Server, Xerox CentreWare Printer Management for Microsoft, Novell, and UNIX
Package length	563.87 mm
Depth (imperial)	18.8 \
Width (imperial)	15.7 \
Height (imperial)	15.1 \
Power requirements	240 V, 50/60 Hz
Standard input trays	2
Print memory (standard)	64 MB
Power consumption (active)	700 W
Compatible operating systems	HP-UX 10.2, Linux, Mac OS X ver.10.2 Red Hat 9, SCO, SUSE 9, Solaris 2.5.1/2.6+, Windows 2000/Vista
Acoustic power emissions (standby)	35 dB
Standard output capacity for envelopes	8000 sheets
Acoustic power emissions (active, print, copy or scan)	56 dB
PCL fonts	68
Certification	CE, UL 60950-1/CSA 60950-1-03, FCC Part 15 Class A, 73/23/EEC, RoHS 2002/95/EC
Maximum duty cycle	200000 pages per month
Recommended duty cycle	8000 pages per month
Number of PostScript fonts	136
Power consumption (standby)	13 W
Power consumption (PowerSave)	130 W
Export Control Classification Number (ECCN)	EAR99

Weight and Dimensions

Depth	478 mm
Width	399 mm
Height	383 mm
Package width	515.61 mm
Package height	584.19 mm
Package weight	21201.2 g
Dimensions (WxDxH)	399 x 462 x 383 mm