Xerox Phaser 4620 User Manual

5/2011
3-20
Phaser 4600/4620 Printer Service Manual
IQ18, IQ19
Revision - Xerox Internal Use Only
Image Quality
IQ18 Registration
The image is positioned incorrectly in either the process or scan direction.
Initial Actions
• Check the Duplex Unit media size setting on the Duplex Unit.
• Check the customer’s application settings.
• Check that the paper supply is new, dry, and loaded correctly.
• Check that the paper tray guides are set correctly.
• Check that components in the paper path are clean and unobstructed.
If registration defects occur on duplex prints only, replace the Duplex Unit. If registration
defects occur on prints sourced from all trays in the process direction, replace the Registration
Assembly.
If registration defects occur from a specific tray in the process direction, check these compo-
nents in sequence and replace as necessary:
• Feed, Nudger, Retard Rollers
• Take Away Clutch
• Feeder Assembly
• Registration Assembly
If registration defects occur In the cross-process direction, check these components in
sequence and replace as necessary:
• Laser Unit
• IP Board
• Drum Cartridge
•Tray
To make registration and margin adjustments, use dC131 to adjust NVRAM values.
Procedure
Measure the registration on two consecutive test prints. Registration is within specification,
refer to IQS 3.
YN
Print test prints from all input sources to isolate the defective component.
Perform IQ5 Skew.
IQ19 Curved Vertical Lines
When printing, vertical lines are not straight.
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Initial Actions
• Cycle system power.
• Check connections from the HVPS to the Drum Cartridge.
• Check AC supply and power cord.
Figure 1 Curved vertical lines defect example
Procedure
Remove the Drum Cartridge and clean the electrical contacts. Replace the Drum Cartridge and
print a test print. The vertical curved lines defect is visible.
YN
Perform SCP 6 Final Actions
Check HVPS operation and bias contacts to the Drum Cartridge. The HVPS is good.
YN
Replace the HVPS.
Check connections between the Laser Unit and IP Board. The connections are secure.
YN
Replace the Laser Unit.
Replace the MCU Board.

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