Xerox Phaser 6600 Service Manual

Maintenance
Xerox Internal Use Only Phaser 6600 and WorkCentre 6605
Service Manual
6-21
Adjusting the Transfer Roller Bias
The bias voltage applied to the Transfer Roller (BTR2) controls how the toner transfers from the
Transfer Belt to the paper. If the bias voltage is too low, the toner does not transfer properly, producing
light colors and white spots. If the bias voltage is too high, mottling of the image can occur.
Adjusting the Transfer Roller bias requires entering Service Mode and editing NVM using a specific
Chain-Link code. Refer to “NVM Read and Write (Edit NVM)” on page 2-28 for detailed instructions on
editing NVM values. Refer to the table below for the Chain-Link codes associated with 11 different
paper types.
To adjust the Transfer Roller bias:
1. Identify the paper type that is producing symptoms of mis-adjusted bias.
2. Enter Service Mode and navigate to Printer Diag > Engine Diag > NVM Settings > Edit NVM.
3. Enter the Chain-Link code for the paper identified in step 1. Refer to the table for the appropriate
Chain-Link code.
CAUTION: In the following step, do not use values higher than 16.
4. Adjust the value up or down as necessary to a value with the range 1-16. The default setting is 6.
Parameter Paper Type Range Initial Chain Link
Plain Paper-L Hole-Punched
or
Colored
1~16 6 746-500
Plain Paper-H Plain 1~16 6 746-501
Recycled Recycled 1~16 6 746-503
Heavier Paper-L Special or
Heavyweight
Cardstock
1~16 6 746-504
Heavier Paper-H Special or
Heavyweight
Cardstock
1~16 6 746-505
Coated Paper-M Lightweight
Glossy
Cardstock
1~16 6 746-512
Coated Paper-H Heavyweight
Glossy
Cardstock
1~16 6 746-513
Envelope Envelope 1~16 6 746-509
Label-H Labels 1~16 6 746-507

Xerox Phaser 6600 Specifications

General

Color	Yes
Duplex printing	No
Print technology	Laser
Maximum resolution	600 x 600 DPI
Time to first page (black, normal)	9 s
Time to first page (color, normal)	10 s
Print speed (black, normal quality, A4/US Letter)	36 ppm
Maximum duty cycle	80000 pages per month
Number of print cartridges	-
Internal memory	256 MB
Processor frequency	533 MHz
Maximum internal memory	768 MB
Sound pressure level (printing)	53 dB
Total input capacity	700 sheets
Total output capacity	250 sheets
Paper tray media types	Card stock, Envelopes, Glossy paper, Labels
ISO A-series sizes (A0...A9)	A4
Standard interfaces	USB 2.0
USB 2.0 ports quantity	1
AC input frequency	50 - 60 Hz
Power consumption (standby)	65 W
Power consumption (printing)	535 W
Sustainability certificates	ENERGY STAR

Weight and Dimensions

Weight	25500 g
Dimensions (WxDxH)	429.26 x 487.68 x 383.54 mm