Xerox Phaser 6128MFP Service Manual

2-50 Phaser 6128MFP Service Manual
Theory of Operation
Image Data Flow
The image data from the media set on the Scanner or ADF goes through the
following components before it is printed at the Engine section.
Document Scanning Steps
A CCD Image Sensor is used to read image data from the media. The CCD Image
Sensor output is adjusted to ensure the image reading is stabilized. Adjustment
includes Automatic Gain Control (AGC) and Automatic Offset Control (AOC).
Reference data for adjustment is collected and used to perform compensation on
the read image data. Compensation includes shading, white variation, and black
variation compensations. These adjustment and compensation steps are
described below:
1. AGC (Auto Gain Control): White Level Variation Adjustment
During AGC, the Scanner Assembly is moved to the position of the white
reference plate, and the Exposure Lamp is illuminated. The light reflected from
the white reference plate is read by the CCD Image Sensor as the white
reference value, which is used to adjust the CCD Image Sensor output.
2. AOC (Auto Offset Control)
AOC is performed by turning Off the Exposure Lamp after AGC. This state is
read by the CCD Image Sensor as the black reference value, which is used to
adjust the CCD Image Sensor output. (The order of AGC and AOC adjustment
depends on the model.)
3. Shading Compensation
Shading compensation compensates for pixel-by-pixel sensitivity variations
and the non-uniformity of lamp light in the fast scanning direction. The AGC
and AOC adjustment values are used to compensate for the image data read
by the CCD Image Sensor.
Media
CCD Image Sensor (Scanner Assy)
Scanner Controller Board
Controller (Image Processor Board)
Laser Unit
Drum (CRU)
Scanner
Engine
s6128-049

Xerox Phaser 6128MFP Specifications

General

Print technology	Laser
Maximum resolution	600 x 600 DPI
Economical printing	Yes
Time to first page (black, normal)	14 s
Time to first page (color, normal)	17 s
Print speed (black, normal quality, A4/US Letter)	16 ppm
Print speed (color, normal quality, A4/US Letter)	12 ppm
Scanner type	Flatbed scanner
Image formats supported	JPG, TIF
Copier resize	- %
Time to first copy (black, normal)	18 s
Copy speed (black, normal quality, A4)	16 cpm
Copy speed (color, normal quality, A4)	12 cpm
Faxing	Mono faxing
Fax speed dialing (max numbers)	200
Total input capacity	250 sheets
Total output capacity	150 sheets
Display	LCD
Market positioning	Business
Internal memory	384 MB
Card reader integrated	No
Sound pressure level (copying)	52.2 dB
Sound pressure level (printing)	14.9 dB
Maximum print size	216 x 297 mm
Paper tray media types	Bond paper, Card stock, Envelopes, Glossy paper, Labels, Plain paper
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Legal (media size), Letter (media size), Oficio (media size), Statement (140 x 216mm)
ISO A-series sizes (A0...A9)	A4, A5
JIS B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 216 g/m²
Power supply type	AC
Dimensions (WxDxH)	425 x 507 x 585 mm
Power requirements	120 V, 50/60 Hz
Networking features	Fast Ethernet
All-in-one functions	Copy, Fax, Scan
Standard media sizes	76.2 x 127 mm - 215.6 x 355.6 mm
Color all-in-one functions	copy, print, scan
Compatible operating systems	Windows 2000+ Mac OS X v10.3 - 10.5 Red Hat Enterprise Linux 5 Desktop SUSE Linux Desktop 10+
Dimensions (W x D x H) (imperial)	16.7 x 20 x 23 \
Acoustic power emissions (active, print, copy or scan)	62.2/30.3 dB
Standard interfaces	USB 2.0
USB 2.0 ports quantity	1
Power consumption (standby)	18.4 W
Power consumption (average operating)	360 W
Sustainability certificates	ENERGY STAR
Certification	EEC, FCC
Maximum duty cycle	40000 pages per month
Recommended duty cycle	3000 pages per month
Storage temperature (T-T)	-20 - 40 °C
Operating temperature (T-T)	10 - 32 °C
Non-operating relative humidity (non-condensing)	10 - 85 %