Xerox Phaser 4620 User Manual

5/2011
8-11
Phaser 4600/4620 Printer Service Manual
Xerographics, Major IOT Assemblies
Principles of Operation
Revision - Xerox Internal Use Only
To better understand Fuser errors, Fuser components are described below.
Fuser Life Expectancy
The life expectancy of the Fuser is 300,000 Letter/A4 size pages. Several factors can reduce
Fuser life:
• Greater than 5% coverage
• Printing on heavy media
• Printing on transparencies or specialty media
Power Shutoff to the Fuser
The printer shuts off power to the Fuser for the following reasons:
• Fuser error
• Jam error
• Cover or doors open
• Laser Unit error
• CPU or NVRAM error
• Fuser Fan error
Major IOT Assemblies
Components of the Phaser 4600/4620 printer described in this section include:
•Trays
• Duplex Unit
• Exit Assembly
• Drive and Electrical
Trays
Standard trays include the 100-sheet, multi-purpose Tray 1 and 1 520-sheet universal tray,
Tray 2. The trays adjust to accept various media sizes.
Tray 1
The Tray 1 Feeder feeds paper into the printer. The Feed Drive Assembly drives the Tray 1
Feed Roller to feed media from the tray. Tray 1 components include:
• Feed Roller
• Pick Clutch that engages the Feed Drive Assembly to the Feed Roller.
• No Paper Sensor that detects whether paper is in Tray 1.
Figure 1 Tray 1 Feeder
Table 4 Fuser Components
Component Function
Heat Roller The Heat Roller is a metal tube with a coated surface and a Heat
Lamp inside. As media passes between the Heat Roller and Pres-
sure Roller, the heat fuses the toner to the media.
Pressure Roller The Pressure Roller maintains pressure on the media passing
between it and the Heat Roller. This pressure bonds the melted
toner to the paper.
Heat Lamp The Heat Lamp is a quartz glass tube containing heater coils. The
Heat Lamp heats the entire length of the Heat Roller.
Temperature Sensors These are Thermistors having a known value of resistance that
varies with temperature. There are three Temperature Sensors in
the Fuser. One is located at the center of Heat Roller, the other is
located where the edge of a letter size sheet of paper comes
through. The third is located at the center of the Pressure Roller.
The sensors monitor the surface temperature of the Heat and
Pressure Rollers.
Thermostat The Thermostat provides a second-level of protection. If the Heat
Roll temperature exceeds the preset temperature, the Thermostat
cuts off the AC power to the Heater Rods.
Fuser Exit Sensor This sensor detects the arrival of the paper at the Fuser exit.

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