Epson GT-30000 Service Manual

A3 Size Color Flat Bed Scanner GT-30000 Revision A
OPERATING PRINCIPLES Electrical Circuit Operations 27
PBA-MAIN BOARD
PBA-ISN BOARD
PBA-CONNECT BOARD
This relay board connects the PBA-MAIN board with the PBA-ISN, PBA-
PANEL, PWS-POWER, PBA-LAMP boards and mechanism.
PBA-PANEL BOARD
This board has a power switch (push-lock), start switch and LED indicators
(READY, ERROR).
PWS-POWER BOARD
Since the power supply circuit board PWS-POWER for this scanner meets the
universal specification requirements, it can be used with rated voltage from
100V to 240V AC.
NOTE: 1) Power on current: 25 A (O-Peak) or less. However, maximum
input should be 264 V AC or less.
2) Leakage current: 0.25 mA or less
(110 V AC, 50 Hz, maximum load)
3.5 mA or less
(140 V AC, 60 Hz, maximum load)
3.5 mA or less
(264 V AC, 60 Hz, maximum load)
Table 2-1.
Name Location Description
CPU
HD6412352F20
IC1
The CPU that controls this entire operation
of this board and operates at 20 MHz.
Voltage = 5.0V
ASIC
µ
PU 65949 SI-079-F6
IC2
The image processor that controls the
functions and operating described below:.
Operating frequency
 External: 48 MHz
 Internal: 120 MHz
(CCD driver assembly)
30 MHz
(other than CCD driver
assembly)
Voltage:
3.3V
Control functions
 CCD control
 Line correction processing
 Buffer memory
 Image processing
MB86606 IC3
The SCSI interface processor operates at
40MHz. Voltage = 5.0V.
BH9595FP-Y IC30/31 Terminator control
Table 2-2.
Name Location Description
CCD sensor
µ
PD3728D
IC9
Color CCD line sensor outline:
 Effective pixel = 7020 pixels x 3 colors
 Bi-D scanning rate =
Max. 10 million pixels/second
Table 2-3.
Name Location Description
STK672-080 IC1 Motor drive control

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.)