Xerox Phaser 6120 Service Manual

Image-Quality Problems
Phaser® 6120 Color Laser Printer Service Manual
4-25
White Lines, White Bands, Colored Lines, and Colored Bands in
the Scan Direction (CD)
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 Unit
(PH)
Is the connector or contact terminal
of the Laser Unit (PH) Unit connected
properly?
NO Clean the contact terminal or
reconnect the connector.
6 Transfer Belt
Unit
Is the Transfer Belt dirty or
scratched?
YES Wipe the surface clean of dirt with
a soft cloth.
Replace the scratched Transfer
Belt with a new Transfer Belt Unit.
7 Is the 2nd Transfer Roller dirty or
scratched?
YES Replace the 2nd Transfer Roller.
8 Paper path Is there a foreign object in the paper
path?
YES Remove the foreign object.
9 Fusing Unit Is the Fusing Entrance Guide Plate
dirty or scratched?
YES Clean.
10 Is the Separation Claw dirty? YES Replace the Fusing Unit.
11 Have steps 1-10 eliminated the
problem?
NO Replace the Power Unit.
4036fs4025c0
4036fs4026c0 4036fs4027c0
4036fs4028c0
White lines in CD White bands in CD Colored lines in CD Colored bands in CD

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