Epson GT-30000 Service Manual

A3 Size Color Flat Bed Scanner GT-30000 Revision A
OPERATING PRINCIPLES Electrical Circuit Operations 26
Figure 2-3. Control Circuit Composition of GT-30000
PBA-PANEL board
PBA-INS board
LED
x2
HP SCAN
SW
Lamp
PBA-LAMP
board
Emitter
block
Inverter
CCD
µ
PD3728D
CR MOTOR
JR4023P70
Motor Driver
STK672-080 (IC1)
INVERTER
board
x3
(RGB)
Image processing
µ
PD65949S1-079-F6
(IC2)
B106
CONNECT
board
Data Bus
Address
Analog SW
74HC4066AF (x4)x3
(IC27.1^27.4/28.1^28.4/
29.1^29.4)(R/G/B)
A/D conversion
AK8412 x3
(IC24/25/26)(R/G/B)
32k RAM
(Gamma crrctn)
(IC17)
32k+32k RAM x2
(White and Black
standard level)
(IC13/14/15/16)
64M SDRAM x3
(R/G/B)
(IC21/22/23)
SCSI Controller
MB86606 (IC3)
Open
Sensor
32k+32k RAM
(IC6/7)
256k EPRAM
(IC8)
Buffer
x2 (IC5/6)
Data Bus
Address
+3.3V,
+3.3V,+3.3V,
+3.3V,
+5V,
+5V,+5V,
+5V,
+12V,
+12V,+12V,
+12V,
+24V
+24V+24V
+24V
+3.3V,
+3.3V,+3.3V,
+3.3V,
+5V,
+5V,+5V,
+5V,
+12V,
+12V,+12V,
+12V,
+24V
+24V+24V
+24V
SCSI
W I/F
SCSI
N I/F
ID SW
W/N
SW
Terminator
Active Terminator
BH9595FP-Y (IC30/31)
SCSI
ADF I/F
TIA/EIA‑422‑B
TIA/EIA‑422‑BTIA/EIA‑422‑B
TIA/EIA‑422‑B
SN75C1167(IC9)
SN75C1167(IC9)SN75C1167(IC9)
SN75C1167(IC9)
Main CPU
HD6412352F20
(IC1)
128
128128
128x
xx
x16
1616
16
EEPROM
EEPROMEEPROM
EEPROM
(IC33)
(IC33)(IC33)
(IC33)
Document
size
sensors0
Document
size
sensors3
Document
size
sensors5
Document
size
sensors4
Document
size
sensors1
Document
size
sensors2
PWS-
POWER
board
PW
AC85‑140V/170‑264V
AC85‑140V/170‑264VAC85‑140V/170‑264V
AC85‑140V/170‑264V
45‑65Hz
45‑65Hz45‑65Hz
45‑65Hz
IEEE 1394
Option
Board

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.)