Xerox Phaser 6120 Service Manual

Image-Quality Problems
Phaser® 6120 Color Laser Printer Service Manual
4-30
Foggy Background
Typical Faulty Images
Troubleshooting Procedure
Step Section Check Item Result Action
1 Imaging Unit Are there scratches or lines evident
on the photo conductor surface?
YES Replace the Imaging Unit.
2 Is the outside of the imaging unit
dirty?
YES Clean.
3 Is the connector or contact terminal
of the Imaging Unit connected
properly?
NO Clean the contact terminal or
reconnect the connector.
4 Toner
Cartridge
Is the developing bias contact
terminal in good contact?
NO Clean the contact terminal or
check the terminal position.
5 Laser (PH)
Unit
Is the connector or contact terminal
of the Laser Unit (PH) Unit connected
properly?
NO Clean the contact terminal or
reconnect the connector.
6 Is the window surface dirty? YES Clean.
7 Density
Sensor
Is the Density (AIDC) sensor dirty? YES Clean. It is located on top of the
transfer belt.
8 Have steps 1-7 eliminated the
problem?
NO
■ Replace the Toner Cartridge.
■ Replace the Laser Unit (PH).
■ Replace the Transfer Belt.
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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