Epson GT-30000 Service Manual

A3 Size Color Flat Bed Scanner GT-30000 Revision A
ADJUSTMENTS Adjustments Using the Special Software 62
Figure 5-6. Document Platen Home Position
5.3.4.1 Home Position Checking
5.3.4.1.1 Check the home position in the main scanning direction
1. Place a sheet of white paper (one sheet of A3 paper or two sheets of A4
paper) and a ruler onto the document platen so that they are against the
sub scanning edge panel.
2. Set the scanning area in the preview screen. (See "Figure 5-7. Checking
the Main Scanning Correction Value".
3. Scan the image at 600 dpi and as a 24-bit color image.
Edge Panel
Main Scanning Direction
Edge Panel
432mm
1.0mm
A
AA
A
Enlarged A
Main Scanning
Direction: 0mm
Sub Scanning
Direction: 0mm
The home position
should be within
this range
Sub-scanning
adjustment
range
Main scanning
adjustment
range
Document
platen home
position
Factory
default home
position
Main Scanning
Direction: 0.5mm
Sub Scanning
Direction: 0.5mm
C H E C K
P O I N T
When adjusting the home position, note that the home
positions are different for the computer screen and for
the document platen of the scanner. (See "Figure 5-5.
Screen and Scanner Orientation".)
A D J U S T M E N T
R E Q U I R E D
After carrying out the operations associated with
removing the glass frame assembly, be sure to check
that no overrun occurs, and make adjustments if
necessary.
C H E C K
P O I N T
Use the Imaging software which is bundled with Windows
95/98 as the scanning application.

Epson GT-30000 Specifications

Power

voltage	AC 100V-120V, 220V-240V
frequency	50-60Hz
power consumption operating without ADF	65W
power consumption operating with ADF	90W
power consumption standby without optional unit	12W

Operating Environment

temperature operating	41ºF to 95ºF (5ºC to 35ºC)
humidity operating	10% to 80% (no condensation)
humidity storage	10% to 85% (no condensation)

Scanning Specifications

optical resolution	600 x 1200 dpi with Micro Step Drive™ technology
maximum resolution	9600 x 9600 dpi with interpolation
effective pixels	7020 x 10200 pixels (600 dpi)
color depth internal	36 bits per pixel
color depth external	24 bits per pixel (selectable)
grayscale depth internal/external	12 bits per pixel
grayscale depth external	8 bits per pixel
scanning speed at 1600 dpi, draft mode, color	0.79 msec/line (approx.)
scanning speed at 1600 dpi, draft mode, grayscale	0.39 msec/line (approx.)
scanning speed at 1600 dpi, draft mode, art	0.39 msec/line (approx.)

Weight and Dimensions

maximum read area	11.7" x 17.0" (297mm x 432mm)
width	25.9" (658mm)
depth	19.2" (488mm)
height	10.0" (254mm)
weight	66 lb (37.5 kg approx.)