Epson GT-30000 Service Manual

A3 Size Color Flat Bed Scanner GT-30000 Revision A
ADJUSTMENTS Adjustments Using the Special Software 64
5.3.4.2 Main Scanning Correction Value Adjustment
1. Click the Read button to read the scanner information.
2. Enter a value which is greater or less than the current value by a multiple of
4 (the adjustment unit is 4 pixels [approx. 0.17 mm]).
!
If overrun has occurred, increase the value.
!
If the ruler part has been truncated by more than 1 mm, reduce the
value.
For details, see "Table 5-4 Main Scanning Direction Adjustment".
!
The valid range of data that can be entered is within the range of 0 to
84. (See "Table 5-9 Main Scanning Direction Adjustment Range".)
Figure 5-9. Main Scanning Direction Adjustment Range
5.3.4.3 Sub Scanning Correction Value Adjustment
1. Click the Read button to read the scanner information.
2. Enter a value which is greater or less than the current value by a multiple of
8 (the adjustment unit is 2 pixels [approx. 0.1 mm]).
!
If overrun has occurred, increase the value.
!
If the ruler part has been truncated by more than 1 mm, reduce the
value.
For details, see "Table 5-5 Sub Scanning Direction Adjustment".
!
The valid range of data that can be entered is within the range of 248
to 128 and 0 to 120. (See "Table 5-10 Sub Scanning Direction
Adjustment Range".)
Figure 5-10. Sub Scanning Direction Adjustment Range
Table 5-4. Main Scanning Direction Adjustment
Pixels adjusted Variation factor
1^4 4
5^8 8
9 ^12 12
• •
••
21^24 24
••
• •
0 4 8 12 16 76 80 84
Table 5-5. Sub Scanning Direction Adjustment
Pixels adjusted Variation factor
1 or 2 8
3 or 4 16
5 or 6 24
• •
••
11 or 12 48
••
• •
248 240 232 144 136
0
or
128 8 16 24 32 106 112 120
0
or
128

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.)