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2720S
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BenQ 2720S - Page 44
67 pages
Manual
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T
o remov
e scan transmissional assembly:
1. R
emove 4 screws
2. Place trimmer on the pulley
3. W
e can remove scan tr
ansmissional assembly
Figure 7-3 Remove Scan Transmissional Assembly 1/2
7-4 API
Confidential
Maintenance
No Copy/Reproduction allowed
43
45
Table of Contents
Main Page
Default Chapter
3
Table of Contents
3
Chapter 1 System Overview
7
Features
7
Chapter 2 Specifications and Section Namess
9
Specifications
9
Sectional Diagram
10
Chapter 3 Theory of Operation
15
Fundamental of Optic Process
15
Scan Process
16
Chapter 4 Mechanism
19
Optics Module
19
Transmission Module
22
Chapter 5 Electrical Systems
23
Overview
23
SCSI Interface
27
Scanner Controller (ASIC & Μp)
29
Analog Circuits
30
CCD Head/Elements
31
Main Flow Chart of Film Scanner
32
Connectors of Scanner 2740S
33
Chapter 6 Trouble-Shooting
37
Error Code Identification from "Status" LED
37
No Function after Power on
37
Cannot Link with Host Computer
37
Flash "1" Time
38
Flash "2" Times
38
Flash "4" Times
38
Flash "5" Times
38
Flash "6" Times
38
Flash "7" and "8" Times
38
Scan Quality Not Good
39
Power Supply
39
CCD Head
39
Chapter 7 Maintenance
41
Precaution
41
Housing Section
41
Transmission Section
43
PCB-Frame Section
45
Panel Board Section
46
About Resolution
48
Appendix A Frequently Asked Questions
49
General Questions
49
Miraphoto
50
Hardware (Scanner
54
Others
57
Appendix B Spare Parts Ordering Information
59
B.1 Ordering Information
59
B.2 Spare Parts List
60
Appendix C Explosive Diagram
63
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