Epson GT-30000 Service Manual

A3 Size Color Flat Bed Scanner GT-30000 Revision A
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Table of Contents
Chapter 1 PRODUCT OUTLINE
1.1 Overview ............................................................................................... 10
1.2 Specifications ...................................................................................... 11
1.2.1 General specifications ................................................................... 11
1.2.2 Detailed Specifications .................................................................. 11
1.2.2.1 Firmware and Software ........................................................ 11
1.2.3 Electrical Specifications ................................................................. 12
1.2.4 Safety, EMC, EPA ......................................................................... 12
1.2.5 Resistance to Electric Noise .......................................................... 12
1.2.6 Environmental Specifications ........................................................ 12
1.2.7 Reliability ....................................................................................... 12
1.2.8 Operating Conditions ..................................................................... 12
1.2.9 Document ...................................................................................... 13
1.2.10 Physical Dimensions and Weight ................................................ 13
1.3 Interface Specifications ...................................................................... 14
1.3.1 General Description ....................................................................... 14
1.3.2 SCSI Interface ............................................................................... 14
1.3.2.1 Basic Specifications ............................................................. 14
1.3.2.2 Functions .............................................................................. 14
1.3.2.3 SCSI Electrical Specifications .............................................. 14
1.3.2.4 Connectors ........................................................................... 14
1.3.2.5 Terminator ............................................................................ 14
1.3.2.6 SCSI ID Setting .................................................................... 15
1.3.2.7 Commands ........................................................................... 15
1.3.2.8 Status ................................................................................... 16
1.3.2.9 Display Messages ................................................................ 16
1.3.2.10 Connector pin arrangement ............................................... 16
1.3.3 IEEE 1394 Serial Bus Interface (Option) ....................................... 17
1.3.4 A Limitation of Interface Connection ............................................. 18
1.3.5 Control Code ................................................................................. 18
1.4 Operation Specifications .................................................................... 19
1.4.1 Switches ........................................................................................ 19
1.4.2 Indicators ....................................................................................... 20
1.4.3 Available Scan Area ...................................................................... 21
1.4.4 Transportation Screw .................................................................... 21
Chapter 2 OPERATING PRINCIPLES
2.1 General Description ............................................................................ 23
2.2 Mechanical Operation of the Scanner ............................................... 24
2.3 Electrical Circuit Operations .............................................................. 25
2.3.1 Control Circuit Operation ............................................................... 25
2.3.2 Size sensor operation ................................................................... 28
Chapter 3 TROUBLESHOOTING
3.1 Overview .............................................................................................. 30
3.1.1 Errors and Causes of Errors ......................................................... 30
3.1.2 Troubleshooting ............................................................................ 31
3.1.2.1 Test Points ........................................................................... 31
3.1.2.2 Troubleshooting Other Errors .............................................. 32
3.1.3 Troubleshooting Circuit Board Errors ............................................ 36
3.1.3.1 Power Supply Board (PWS-POWER Board) ....................... 36
3.1.3.2 Control Circuit Board (PBA-MAIN Board) ............................ 36
Chapter 4 DISASSEMBLY & ASSEMBLY
4.1 Overview .............................................................................................. 38
4.1.1 Points to Note ................................................................................ 38
4.1.2 Tools ............................................................................................. 39
4.1.3 Screws .......................................................................................... 39
4.2 Disassembly Procedures .................................................................... 41
4.2.1 Scanner Body Disassembly .......................................................... 42
4.2.1.1 ADF Removal ....................................................................... 42
4.2.1.2 Main Circuit Board Removal ................................................ 42
4.2.1.3 Mechanism Cover Removal ................................................. 43
4.2.1.4 Scanner Mechanism Removal ............................................. 44
4.2.2 Scanner Mechanism Disassembly ................................................ 46
4.2.2.1 Power Supply assembly Removal ........................................ 46
4.2.2.2 Cooling Fan Removal .......................................................... 46
4.2.2.3 Power Supply Circuit Board Removal .................................. 46
4.2.2.4 Fuse Removal ...................................................................... 48

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.)