Xerox Phaser 4620 User Manual

5/2011
8-4
Phaser 4600/4620 Printer Service Manual
Media Handling
Revision - Xerox Internal Use Only
Principles of Operation
Media Handling
Media is driven along the media path by various drive motors, belts, gear assemblies and roll-
ers. Synchronization of these components is managed by the MCU Board. The operating sys-
tem monitors sensors located along the media path throughout the print engine and attached
options. As a sheet travels along the media path, sensors change state temporarily to indicate
the sheet’s presence. If the pattern of sensor state changes differs from the expected timing for
a particular paper size and path, an error is reported.
Input Media Path
Media supplied from each tray is transported through the printer along the path shown in the
flow chart in Figure 1.
Tray 1
When feeding media from Tray 1, the control logic instructs the mechanical drive to activate the
Feed Roller. When the control logic calls for media feed, it sends a feed signal to momentarily
energize the Tray 1 Pick Clutch causing the Feed Roller to rotate. When the Feed Roller con-
tacts the paper, a sheet is fed into the gap between the Feed Roller and the Pinch Rollers.
Tray 2
When the control logic calls for media feed, the Nudger Roller moves the sheet to the Feed
Roller. The Feed Roller moves a single sheet out of the tray and toward the tray’s Take Away
Roller. The Separator Roller ensures only one sheet is fed. The media then moves past the
Pick Sensor and up the vertical path driven by the Take Away Roller. The media continues
along the path until the sheet reaches the Registration Roller.
Trays 3 through 6
Feeder operation of the 520-sheet feeders (SCF) and 2000-sheet feeder (HCF) is much the
same as Tray 2. Optional feeders employ similar feeder components.
Output Media Path
The path for media exiting the Fuser are:
• Through the Exit Assembly to the Output Tray on the Top Cover (facedown).
• Through Exit Assembly to the Mailbox or Finisher.
Output Tray
The Output Tray is a face-down, 500-sheet tray located on the printer’s Top Cover. The tray
receives media from the Exit Assembly.
Mailbox
The mailbox sorts prints into 4 separate 100 sheet output trays.
Finisher
Media fed from the Exit Assembly is redirected upwards by the exit gate. Media is drawn into
the Finisher by an entrance roller driven by the Finisher Transport Motor. The exit gate is
switched by the exit gate solenoid controlled by signals received from the MCU Board.
Figure 1 Media Transport Path

Xerox Phaser 4620 Specifications

General

Operating temperature (T-T)	50 - 90 °F
Operating relative humidity (H-H)	20 - 80 %
Color	No
I/O ports	10/100/1000 BaseT Ethernet, USB 2.0
Depth (min)	541 mm
Height (min)	420 mm
Minimum width	476 mm
Minimum weight	34.6 kg
Package length	698.49 mm
Print technology	Laser printing
Mac compatibility	Yes
Security features	Audit log, HTTPS, Image overwrite security, IP filtering, IPSec, Network authentication, SNMPv3, 802.1x
Storage drive type	Optional
Print memory (standard)	256 MB
Power consumption (active)	900 W
Minimum storage drive space	160 GB
Power consumption (standby)	93 W
Power consumption (PowerSave)	10 W
Storage media	HDD
Maximum internal memory	768 MB
Sound power level (standby)	39 dB
PCL fonts	93
Certification	Class 1 Laser Product, CE Marked, EMC Directive 89/336/EEC, EN 55022 Class B, EN 55024, FCC Part 15, Class B, Low Voltage Directive 73/23/EEC, RoHS Directive 2002/95/EC
Country of origin	China
Maximum duty cycle	275000 pages per month
Number of PostScript fonts	136
Number of print cartridges	1
Total input capacity	550 sheets
Total output capacity	500 sheets
Maximum input capacity	2000 sheets
Multi-Purpose tray input capacity	100 sheets
Maximum resolution	1200 x 1200 DPI
Time to first page (black, normal)	7.8 s
Print speed (black, normal quality, A4/US Letter)	65 ppm
Display	LCD
Package weight	40200 g
Maximum print size	216 x 356 mm
Paper tray media types	Bond paper, Card stock, Labels, Pre-Printed, Recycled paper, Transparencies
ISO A-series sizes (A0...A9)	A4
Standard interfaces	USB 2.0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Export Control Classification Number (ECCN)	EAR99

Weight and Dimensions

Width	627.37 mm
Height	685.79 mm
Dimensions (WxDxH)	476 x 420 x 541 mm