Epson Stylus Pro 9900 Repair Guide

Pro 7900 and 9900 Field Repair Guide 10/6/10
Vertical Banding Printer Component, Software Item, LCD Display, Printer Button Page 251.
Vertical Banding
Note: Vertical Banding is caused by horizontal dot placement errors.
Saturation Related Vertical Banding
If the vertical banding is caused by paper over saturation, the banding will correspond to rippling of the media. The
rippling will be visible on the back of the media. This kind of vertical banding is usually about an inch wide.
Under saturated images causes a type of vertical banding that is usually about 1/3 of an inch wide. Use another
Computer with the Epson Driver and Epson Media to eliminate the users equipment. Non-Epson drivers effect verti-
cal banding if the amount of ink that is applied to the media is too low. Using the Epson driver should look better, if
that is the case. Non-Epson media can impact vertical banding if the amount of ink that is required to correctly satu-
rate the media is not applied by the Epson driver or a non-Epson driver.
Alignment Related Vertical Banding
Print an image in bi-directional mode, and in uni-directional mode (High Speed checked = bi-directional mode).
If the vertical banding is more evident in bi-directional mode, the most likely cause is an improper Bi-D alignment.
The Uni-D adjustment effects vertical banding in both bi-directional mode, and in uni-directional mode.
Carriage Motor Related Vertical Banding
If the vertical banding is more evident in uni-directional mode, the most likely cause is Carriage Motor vibration.
Replacing the Carriage Motor may improve the banding.
Dirty Rails or Encoder Strip
Clean the Carriage Encoder and the Carriage Rails.

Epson Stylus Pro 9900 Specifications

General

Color	Yes
Maximum resolution	2880 x 1440 DPI
Media thickness	0.08 - 1.50 mm
Maximum print size	A0 (841 x 1189 mm)
Maximum roll width	1118 mm
Display	LCD
Internal memory	64 MB
Country of origin	China
Drive device, buffer size	256 MB
Sound pressure level (printing)	50 dB
USB connector	USB Type-A
USB 2.0 ports quantity	1
Ethernet interface type	Fast Ethernet
Compatible operating systems	Microsoft Windows 2000, XP, XP 64-bit, Vista, MAC OSX 10.x.x
Power requirements	AC 100-240V 50/60Hz
Power consumption (active)	80 W
Power consumption (standby)	1 W
Storage temperature (T-T)	-20 - 40 °C
Operating temperature (T-T)	5 - 35 °C
Storage relative humidity (H-H)	5 - 85 %
Operating relative humidity (H-H)	20 - 80 %
Package depth	2040 mm
Package width	815 mm
Package height	1080 mm
Package weight	193053 g
Quantity per pack	1 pc(s)

Weight and Dimensions

Dimensions (WxDxH)	1702 x 678 x 1196 mm