Manuals
/
Epson
/
Computer Equipment
/
All in One Printer
Epson
DFX-8500
service manual
Models:
DFX-8500
1
206
245
245
Download
245 pages
33.2 Kb
203
204
205
206
207
208
209
210
<
>
Troubleshooting
Specifications
Error codes
Circuit Diagrams
‰Control and status signals
Errors and Buzzers
Indicators
Tractor Wire Operation
Maintenance
Reset IC
Page 206
Image 206
DFX-8500
Figure
6-3.
Lubrication and Adhesive Diagram 2
6-4
Rev. B
Page 205
Page 207
Page 206
Image 206
Page 205
Page 207
Contents
DFX-8500
Copyright 1998 by Seiko Epson Corporation Nagano, Japan
Precautions
Preface
Revision Issued Data Contents
Revision Sheet
Table of Contents
Chapter
Page
Features
DFX-8500 Exterior View
Option
Code Name
NLQ
Specifications
Printing Specification
USA
Brascii
PC866 UKR PC Aptec
UPC-A UPC-E
Character tables and type faces Character Table Bitmap Font
BRASCII*1
Environmental Condition
Electrical Specification
Paper Feeding
Reliability
CE Marking
Safety Approvals
Physical Specifications
Acoustic Noise
Printable area
Continuous Paper
MR M
C D Y Z
General Description
Continuous Paper Front Entry Rear Entry Minimum Maximum
Paper and Media
Continuous paper Single sheet and multi-part
Paper-stapling Height
Form Labels
Labels
Labels Front Entry Rear Entry Minimum Maximum
Width Height Inch
Continuous Forms with Labels
Avery Continuous Form Labels
Overlapping Multi-part Form
Perforation
12. Paper Width Overlapping Area
16. Raised Portion at a Perforation
Interfaces
Parallel Interface Forward channel
Signal Level Parameter Minimum Maximum Condition
Parallel Interface Reverse channel
Serial Interface
Optional Interface
Interface Selection
Prevention Hosts from Data Transfer Time-out
Operating Instructions
Control Panel
Switches
Indicators
Paper Out Ribbon Beeper *1 Description
Errors and Buzzers
15. Error/Warning Buzzer Information
DIP Switch Settings
ESC/P
PC866 UKR
17. Character Table Setting Standard
SW1-2 SW1-3 SW1-4 SW1-5 SW1-6 Character table
Pcaptec
23. Serial I/F Baud Rate Setting SW4-7 SW4-8 Baud rate
21. I/F Selection SW4-3 SW4-4 Mode
22. Serial I/F Parity Setting SW4-5 SW4-6 Serial parity
Functions
Usual operation
Current paper No. is not a or b
‰Paper Select
Current paper No. is a or b
Operation at Power On
Built-in Detection
‰How to recall memories
Paper Memory Function
Software Initialization
Power-on Initialization
Initializations
Panel Initialization
Main Component
24. Main Components
1 M-3I60 Printer Mechanism
25. M-3I60 Printer Mechanism
RAM
Reset IC
Main Control Board C204 Main Board
ADM232L
3 C204 DRV Board
27. C204 DRV Board
4 C204 DRV-B Board
5 C204 SUB Board
6 C204 PSB/PSE Board
30. C204 PSB/PSE Board
Housing
31. Housing
Page
Operating Principles
Page
‰Plunger mechanism
Printer Mechanism Operation
‰Printhead
‰Carriage mechanism
‰Interlock switch
‰Auto platen gap adjustment mechanism
‰Ribbon feed mechanism
‰Paper feed mechanism
‰Tractor select mechanism
Printhead Mechanism
Printhead Mechanism
Carriage Mechanism
Carriage Mechanism
Platen Gap Adjustment Mechanism
Platen Gap Adjustment Mechanism
Paper Feed Mechanism
Tension Roller and PF Roller Operation
Pinion Gear
Tractor Wire Operation
10. Tractor Wire Operation
Ribbon Feed and Tractor Select Mechanisms
11. Ribbon Feed Mechanism
12. Tractor Select Mechanism
Plunger Mechanism
13. Plunger Mechanism
Power Supply Board Output Specification
Power Supply Operation
Power Supply Boards Input Input Voltage Fuse Ratings
+5V DC Line
Power Supply Overview
14. Power Supply Board Block Diagram
‰37V line block 2/2
‰General
‰37V line block ½
‰Cooling fan
PSB/PSE Board Control Signals Logic Function Out*1
‰Control and status signals
‰Fatal error recovery
‰Protection circuits
Control Circuit
Control Circuit Operation Overview
15. Control Circuit Block Diagram
Main IC Functions
16. Parallel Interface Data Flow
‰Forced Reset
Reset Circuit
‰Power On/Off Reset
‰/INIT Signal Reset
18. Sensor Circuit Block Diagram
Sensor Circuits
Platen Gap encoder sensor
DFX-8500
At Super draft printing, + 10 %
CR Motor Specifications Description
CR Motor Drive Circuit
Curve Control
NLQ HD
Speed 0 SP1
‰PI Control
‰Acceleration control
SP1 SP2
SP3 Speed
‰Deceleration control
Current speed SP3
PF Motor Drive Circuit
PF Motor Specifications
Specification Description
10. RF Motor Specifications
RF Motor Drive Circuit
11. PG Motor Specifications
PG Motor Drive Circuit
12. Plunger Specifications
Plunger Drive Circuit
27. Printhead Drive Circuit Block Diagram
Printhead Drive Circuit
‰Printhead high temperature feedback operation
‰HF temperature feedback operation
Interlock Switch and Cover Open Sensor Assembly Removal
Circuit Boards Removal
Page
Precautions for Disassembly and Assembly
Overview
Packing Material Attaching
Tools
Recommended Tools Type Class Code Reference
Dial Gauges
Abbreviation Part Name
Specification for Screws
Screw Abbreviations
Screw Names and Illustrations
Service Checks After Repair
Inspection Check List for the Repaired Printer
Disassembly and Assembly
ROM Replacement
ROM Replacement
Printhead and Ribbon Mask Assembly Removal
Printhead Kit
Front side
12. Printhead Removal
Adjustment Required
Housing Removal
Top Cover Removal
Left, Right, and Front Covers Removal and Fuse Replacement
17. Left and Right Side Covers Removal
G h t S i d e -19. Fuse Removal
20. Front Cover Removal
Front Panel Unit Removal
21. Front Panel Removal
Upper Case Removal
22. Upper Case Removal
Bottom Panel Assembly Removal
Circuit Boards Removal
24. Connector and Earth Cable Removal left side
26. Bottom Panel Assembly Removal
Cooling Fan and C204 Power Supply Board Unit Removal
27. C204 PSE/PSB Board Removal
4.3 C204 SUB Board Unit Removal
28. C204 SUB Board Unit Removal
4.4 C204 DRV-B and C204 DRV Board Units Removal
29. C204 DRV/DRV-B Boards Removal ½
4.5 C204 Main Board Unit Removal
31. C204 Main Board Removal 1/4
34.C204 Main Board Removal 4/4
AC Inlet Removal
35. Grounding Plate Removal
4.7 C204 PNL Board Removal
37. C204 PNL Board Removal
Interlock Switch and Cover Open Sensor Assembly Removal
38. Interlock Switch Assembly Removal
41. Connector Removal left side
Printer Mechanism Removal
Adjustment Required
Fan Removal
45. Fan Removal
Ribbon Feed Change Lever Unit Removal
46. Ribbon Feed Change Lever Unit Removal 1/2
48. Removing Connectors
Tractor Select Lever Upper and Lower Assembly Disassembly
49. Tractor Select Lever Disassembly
Ribbon Jam Sensor Removal
51. Ribbon Jam Sensor Removal
52. Connector Junction Board Removal
PG Sensor and PG Motor Removal
53. PG Sensor and PG Motor Removal
Plunger and Paper Bail Assembly Removal
54. Plunger Removal
55. Paper Bail Assembly Removal 1/2
57. Top PE Sensor Connector Removal
Upper Paper Guide and Top PE Sensor Removal
Tension Roller Shaft Removal
59. Tension Roller Gear Removal
60. Shaft Holder Removal
Platen Removal
62. Platen Removal
Paper Jam Sensor Removal
64. Lower Paper Guide Left Part Removal
Pull Tractor Sensor Removal
66. Pull Tractor Sensor removal
Paper Width PW Sensor Removal
67. PW Sensor Removal
PG Home Sensor Removal
68. Carriage Guide Shaft Gear Removal
70. CR Guide Shaft Gear Phase Alignment
PF Motor Removal
71. PG Home Sensor Removal
Left Side Frame Gear Removal
72. Left Side Frame Gear Removal
Front Tractor Assembly Removal
73. Tractor Wire Removal
Rear Tractor Assembly Removal
75. Rear Tractor Assembly Removal
CR Motor Fan Removal
76. CR Motor Fan Removal
CR Motor Removal
77. CR Motor Removal
CR Carriage Encoder Sensor Removal
78. CR Sensor Removal 1/2
Carriage Mechanism Disassembly
80. Belt Pulley Removal
82. Rear Carriage Guide Shaft Removal
Assembling Point
Paper Support Assembly Removal
6.24 3.2.6.21 PF Drive Roller Removal
Adjustment
Page
Printer Mechanism Adjustments
PG Motor Backlash Adjustment
Carriage Timing Belt Tension Adjustment
Carriage Timing Belt Tension Adjustment
Tractor Wire Spring Tension Adjustment
Tractor Wire Tension Adjustment Front
Pull Tractor Sensor Position Adjustment
Pull Tractor Sensor Position Adjustment
Carriage Guide Shaft Parallelism Adjustment
Set Dial Gauge to Dial Gauge Base
Black Marker to 0 Position Setting
R r ia g e
11. Carriage Guide Shaft Parallelism Adjustment
Platen Angle Adjustment
13. Loosing Hexagonal Screws
70 mm Center Position Platen
BitA BitB Down AngleAdjustmentMethod
Platen Gap Motor Value Adjustment
17. Alpha Value Print
Alpha Value Write Mode
Beta Values Write Mode
Default Value*1
Beta
Measurement Seeking and Bi-directional Printing Adjustment
A R T
A R T
Lig h t T im e
23. Bi-d. Adjustment
Page
Chapter Troubleshooting
Page
Troubleshooting Information
Error Messages
Bypassing Interlock Switch and Cover Open Sensor
Interlock Switch Assembly Location
Coil Resistance
Motor, Fan, Plunger, and Printhead Coil Resistance Part
FPC a FPC B FPC C
Printer does not operate when power is turned on
Start
Carriage operation is abnormal
END
Start
DFX-8500
END
Printing is normal, but paper feeding is abnormal
Start
Panel unit operation is abnormal
Start
1 C204 PSB/PSE Board Repair
C204 PSB/PSE Board Main Parts List Location Description
Circuit Board Repair
DFX-8500
Troubleshooting
2 C204 MAIN/DRV/DRV-B Boards Repair
Symptom Cause Checkpoint Solution
C204 MAIN/DRV/DRV-B boards Component Repair 2/7
DFX-8500
C204 MAIN/DRV/DRV-B boards Component Repair 4/7
DFX-8500
C204 MAIN/DRV/DRV-B boards Component Repair 6/7
DFX-8500
Printer Mechanism Repair
DFX-8500
Adjustments
DFX-8500
Chapter Maintenence
Page
Recommended Lubricants Type Name Quantity Availability
Preventive Maintenance
Lubrication and Adhesive Application
Lubrication Points Ref. No Ref. Figure Lubricant
Adhesive Application Points Ref. No Ref. Figure
Lubrication and Adhesive Diagram
DFX-8500
Maintenance
Page
Appendix
Page
Connector PIN Assignments
Figure A-1. Cable Connection
C204 PSB/PSE board
C204 DRV Board
C204 DRV-B Board
Fancom
Hfanb
Ftmp
Htmp
Table A-10. C204 Main Board Connector CN9
Table A-8. C204 Main Board Connector CN7
Table A-9. C204 Main Board Connector CN8
Table A-11. Digital Board Connector CN10
Brxd
Btxd
Xready
Bxrst
PLN
VP3
FAN
RFH/R
Table A-15. C204 Main Board Connector CN16
Table A-20. C204 PSB/PSE Board Connector CN5
Table A-18. C204 DRV-B Board Connector CN1
Table A-19. C204 PSB/PSE Board Connector CN1
GMD
Circuit Diagrams
Figure A-2. C204 Main Board Exploded Diagram
Page
Page
Page
Page
Page
Component Layout
Figure A- 8. C204 Main Board Component Layout
Figure A- 9. C204 DRV Board Component Layout
Figure A- 11. C204 DRV-B Board Component Layout
Figure A- 13. C204 PSB Board Component Layout
Figure A- 14. C204 PSE Board Component Layout
Connectors on
Table A-20. Part List 1/3
Table A-20. Part List 2/3
Table A-20. Part List 3/3
Exploded Diagrams
Figure A-16. Exploded Diagrams for DFX-8500
Figure A-16. Exploded Diagrams
Figure A-17. Exploded Diagrams
Figure A-18. Exploded Diagrams
Figure A-19. Exploded Diagrams
Figure A-20. Exploded Diagrams
Figure A-21. Exploded Diagrams
Figure A-22. Exploded Diagrams
Figure A-23. Packing Material
Epson AMERICA, Inc Epson Deutchland GmBH
Imaging & Information Products Division
Epson
Top
Page
Image
Contents