Brother DCP-8065DN Service Manual

8-28 Confidential
8.5 OTHER SERVICE FUNCTION
8.5.1 Resetting the Developing Bias Voltage Counter
Function
Since print density is likely to become darker as the toner gets older, the developing bias is
lowered by degrees (bias voltage is reduced) according to the number of develop roller
rotations so that an almost fixed density can be maintained from the beginning to the end.
The developing bias voltage can be verified in the display of log information (maintenance-
mode function code 80 in Section 8.4.15).
Operating Procedure
(1) Open the front cover.
(2) Press the [Clear/Back] button. "Replace Drum? / 1. Yes 2. No" appears on the LCD.
(3) Press the [*], [0] and [0] keys in this order.
(4) Close the front cover.

Brother DCP-8065DN Specifications

General

Duplex printing	Yes
Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	28 ppm
Scan to	e-mail, file, image, OCR
Input color depth	48 bit
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
Copy speed (black, normal quality, A4)	28 cpm
Total input capacity	250 sheets
Total output capacity	150 sheets
Auto document feeder (ADF) input capacity	50 sheets
Internal memory	32 MB
Maximum internal memory	544 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	55 dB
Display	LCD
Market positioning	Business
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
Maximum ISO A-series paper size	A4
Font styles	66 Scaleable fonts, Letter, Gothic 16.66, OCR-A, OCR-B, 11 Barcodes
Dimensions (WxDxH)	531 x 450 x 475 mm
Networking features	10/100 Base-TX
All-in-one functions	Copy, Scan
Color all-in-one functions	scan, n
Compatible operating systems	Mac OS X 10.2.4 or greater Windows XP
Standard interfaces	USB 2.0
Sustainability certificates	ENERGY STAR
Power consumption (standby)	85 W
Power consumption (PowerSave)	15 W
Power consumption (average operating)	660 W