Xerox Phaser 3250 Service Manual

2-10 Phaser 3250 Laser Printer Service Manual
Theory of Operation
Thermistor (Temperature Detecting Sensor)
The Thermistor is used to detect the temperature of the heating unit and feeds
this data into the main processor.
Thermostat (Heat Lamp Power Cut-Off)
When the Heat Lamp becomes too hot, the Thermostat cuts off power to the
Lamp to prevent from overheating.
Heat Roller
The Heat Roller transfers heat from the Lamp to the paper. As the paper
passes between the Heat Roller and Pressure Rollers, the toner is melted and
permanently fixed to the paper. The surface of the Heat Roller is coated with
Teflon, so that toner does not stick to the surface.
Pressure Roller
The Pressure Roller, mounted under a Heat Roller, is made of a silicon resin
and the surface is also coated with Teflon. When paper passes between the
Heat Roller and the Pressure Roller, toner powder is melted and permanently
fixed to the surface of the paper.
Safety Features
To Prevent Overheating:
■ 1st Protection Device: Hardware cuts off when overheated.
■ 2nd Protection Device: Software cuts off when overheated.
■ 3rd Protection Device: Thermostat cuts off main power to the Lamp.
Safety Device:
■ Fuser power is cut off when the Front Cover is opened.
■ Laser power is cut off when the Front Cover is opened.
■ The temperature of the Fuser cover’s surface is maintained at less than
80°
to protect the user. A Caution label is attached where the customer
can easily see when the Rear Cover is opened.

Xerox Phaser 3250 Specifications

General

Color	No
Print technology	Laser
Maximum resolution	600 x 600 DPI
Warm-up time (from sleep mode)	15 s
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	28 ppm
Internal memory	32 MB
Maximum internal memory	160 MB
Sound power level (standby)	29 dB
Sound pressure level (printing)	54 dB
Total input capacity	251 sheets
Maximum input capacity	501 sheets
Paper tray media types	Bond paper, Envelopes, Labels, Plain paper, Recycled paper, Transparencies
Functions	Print
I/O ports	USB 2.0
Device manager	Printer Setting Utility for Windows
Package length	561.33 mm
Depth (imperial)	14.5 \
Width (imperial)	14.3 \
Height (imperial)	9.4 \
Weight (imperial)	26.19 lbs
Power requirements	240 V, 50/60 Hz
Storage drive type	N/A
Hardware scan resolution	1200 x 1200 DPI
Storage temperature (T-T)	32 - 104 °F
Power consumption (active)	400 W
Compatible operating systems	Fedora Core 1, Red Hat 9, SUSE 9 Windows 2000/Vista
Non-operating relative humidity (non-condensing)	20 - 80 %
Country of origin	China
Maximum duty cycle	30000 pages per month
Recommended duty cycle	4000 pages per month
Sustainability certificates	ENERGY STAR
Power consumption (standby)	70 W
Power consumption (PowerSave)	11 W
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	10 - 80 %
Certification	CE, UL 60950-1/CSA 60950-1-03, EMC 2004/108/EC, 2006/95/EC
Package width	472.43 mm
Package height	342.89 mm
Package weight	11884.3 g

Weight and Dimensions

Depth	369 mm
Width	364 mm
Height	239.2 mm
Dimensions (WxDxH)	364 x 369 x 239.2 mm