Epson ActionScanner II Manual de Serviço descarregar pdf (Página 58)

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3.2.4 Removing the B034 PSB/PSE Power Supply Board

1. Remove the bottom plate. (Refer to Section 3.2.2.)

Remove 3 CBP-tite (M3 × 12) screws.

3. Disconnect the 2 cables on the board, and then remove the board.

CAUTION

Turn the main unit over onto a soft cloth so that the glass will not be damaged.

ASSEMBLY POINT

When you connect the cable to connector CN2 of the B034 PSB/PSE board, align the red stripe on

the cable with pin 1 of CN2.

CBP-tite (M3x12)

B034 PSB/PSE Board

Figure 3-5. Removing the B034 PSB/PSE Board

Disassembly and Assembly GT-5000 / Action Scanner II Service Manual

3-6 Rev. A

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 97 98

SERVICE MANUAL 1
PRECAUTIONS 4
REVISION SHEET 6
TABLE OF CONTENTS 7
Chapter 1 Product Description 8
1.1 FEATURES 10
Table 1-1. Optional Units 11
1.2 SPECIFICATIONS 12
216 mm (8.64 inches) 13
(11.88 inches) 13
1.3 INTERFACE SPECIFICATIONS 14
1.3.2 SCSI 16
1.3.2.3 SCSI Status 17
1.3.2.2 SCSI Commands 17
1.3.2.4 SCSI Messages 18
1.3.2.5 SCSI Pin Assignments 18
1.4 BUTTONS AND INDICATORS 19
1.5 SELF-TEST 19
1.6 ERRORS 20
Scanner Data Request 22
Byte Sequence Mode Reading 24
1.7.3 Data Block Formats 25
Figure 1-13. Line Data Format 25
1.7.4 Format of Status Byte 26
Figure 1-15. Status Byte 26
Table 1-7. Color Attributes 27
1.8 SCANNER FUNCTIONS 28
1.8.2 Output Resolution 29
1.8.3 Zoom 29
Figure 1-16. Zoom 29
1.8.4 Reading Area 30
1.8.5 Color Mode 30
Figure 1-17. Reading Area 30
1.8.6 Digital Halftoning 31
1.8.7 Color Correction 32
1.8.8 Brightness 32
1.8.9 Sharpness 32
Figure 1-18. Brightness 32
1.8.10 Gamma Correction 33
1.8.11 Scanning Mode 33
Figure 1-19. Gamma Correction 33
B034 PSB/PSE Board 34
Carriage Assembly 34
(Scanner Head) 34
B034 MAIN/MAIN-B 34
Figure 1-21. B034 MAIN Board 35
1.9.5 Upper Case 37
Figure 1-26. Upper Case 37
Table of Contents 38
List of Figures 38
List of Tables 38
2.1 ENGINE OPERATIONS 39
Photosensitive Section 40
Transmission Section 41
2.1.2 Carriage Operations 42
2.2 POWER SUPPLY OPERATIONS 43
2.3 CONTROL CIRCUITS 45
2.3.2 Reset Circuit 48
Rev. A 2-13 51
3.1.1 Precautions 53
3.1.2 Tools 53
Table 3-1. Tools 53
3.1.3 Small Parts 54
3.2 DISASSEMBLY AND ASSEMBLY 56
CPS-tite (PS) (M3x6) 57
Timing Belt 57
CBP-tite (M3x12) 58
ASSEMBLY POINT 59
3.2.6 Removing the CR Motor 60
HP Sensor 61
Inverter Board 62
CR Cover 62
Lamp Holder 62
Chapter 4 Adjustments 63
Chapter 5 Troubleshooting 64
5.1 OVERVIEW 65
5.2 SELF-DIAGNOSTIC FUNCTION 65
5.3 TROUBLESHOOTING 66
Table 5-9. Lamps Do Not Light 70
Table 5-11. Image Unclear 71
Chapter 6 Maintenance 75
6.1 MAINTENANCE 76
6.2 LUBRICATION 76
6-2 Rev. A 77
Rev. A 6-3 78
APPENDIX 79
A.1 CONNECTOR PIN ASSIGNMENTS 80
A.2 CIRCUIT DIAGRAMS 84
A-6 Rev. A 85
Rev. A A-7 86
A-8 Rev. A 87
Rev. A A-9 88
A-10 Rev. A 89
Rev. A A-11 90
A-12 Rev. A 91
A.4 EXPLODED DIAGRAMS 92
Figure A-14. Exploded Diagram 93
As of September 1994 96

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Epson ActionScanner II Manual de Serviço Página 58

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