Xerox Phaser 6120 Service Manual

Print Engine Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
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5. The sequence of these operations is repeated so that the fusing speed is changed
automatically according to the loop length. This effectively makes for the difference
between the fusing speed and paper conveyance speed during image transfer.
Fusing Temperature Control
A thermistor is used to detect the surface temperature of the Heating Roller. The Heater Lamp
(H1) is then turned ON and OFF as necessary to achieve the set temperature.
Warm-Up
■ The lamp is on until the Heating Roller temperature reaches 178° C.
■ This control is performed when the Power Switch is turned ON, a malfunction or paper
misfeed is reset, the Energy Saver mode is canceled, or the door is opened and closed.
Ready
The fusing temperature in the Ready (or standby) state is maintained at a constant temperature.
During Print Cycle
To ensure good fusing performance, the set temperature of each roller is varied according to
the paper type and environment.
Energy Saver Mode
Heater control is suspended when a malfunction or paper misfeed occurs or in the Energy
Saver mode.
Protection Against Abnormally High Temperature
The machine provides protection at three different stages to prevent abnormally high
temperature of the Fusing Unit.
■ Soft Protection (Warning)
If the Thermistor (TH1) detects a temperature exceeding a predetermined value, the
malfunction code representing abnormally high temperature is displayed. At this time, the
4139to1592c0 4139to1593c0

Xerox Phaser 6120 Specifications

General

Color	Yes
Print technology	Laser
Time to first page (black, normal)	13 s
Time to first page (color, normal)	22 s
Print speed (black, normal quality, A4/US Letter)	20 ppm
Print speed (color, normal quality, A4/US Letter)	5 ppm
Internal memory	128 MB
Processor model	300 MHz, 32 bit RISC
Maximum print size	210 x 297 mm
Maximum ISO A-series paper size	A4
I/O ports	USB
Power requirements	200 – 240 VAC / 100 – 127 VAC 50/60 Hz
Networking features	Ethernet/Fast-Ethernet
Non-operating relative humidity (non-condensing)	10 - 85 %
Total input capacity	200 sheets
Maximum input capacity	500 sheets
Printer fonts	PostScript
Maximum duty cycle	35000 pages per month
Number of PostScript fonts	139
Power consumption (printing)	380 W
Storage temperature (T-T)	-20 - 40 °C
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	10 - 80 %

Weight and Dimensions

Dimensions (WxDxH)	442 x 395 x 341 mm