Epson DFX-8000 Service Manual
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Epson DFX-8000 Service Manual

Epson DFX-8000 Service Manual

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D F X - 8 0 0 0
Dot Matrix Printer
TM-DFX8000

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Summary of Contents for Epson DFX-8000

  • Page 1 D F X - 8 0 0 0 Dot Matrix Printer TM-DFX8000...
  • Page 2 ® EPSON D F X - 8 0 0 0 Service Manual Revision Level...

  • Page 3: Fcc Compliance Statement For American Users

    Epson America, Inc. No patent liability is assumed with respect to use of the information contained herein. While every precaution has been taken in the preparation of this book, Epson America, Inc., assumes no responsibility for errors or omissions.
  • Page 4 CAUTION 1. Repairs on Epson products should be performed only by an Epson-certified repair technician. 2. Make certain that the source voltage is the same as the rated voltage, listed on the serial number/rating plate. If the Epson product has a primary AC rating different from the available power source, do not connect it to the power source.

  • Page 6: Table Of Contents

    Paper Cutter ................1-48 Copy Mode .................. 1-48 Printer Initialization ..............1-49 Major Units ..................1-50 Printer Mechanism ..............1-50 Power Supply Board ..............1-52 Main Board ................1-54 Driver Board ................1-56 Control Panel ................1-57 Housing ..................1-58 DFX-8000...
  • Page 7 Removing the Circuit Boards............ Removing the Interlock Switch ..........3-35 Removing the Printer Mechanism ..........3-36 Removing Printer Mechanism Components Without Removing the Printer Mechanism......3-40 Removing Printer Mechanism Components After Removing The Printer Mechanism ......3-57 DFX-8000...
  • Page 8 Chapter 6 Maintenance Preventive Maintenance ..............6-1 Lubrication and Adhesive Application ..........Appendix A Technical Specifications Component Connections ..............A-1 The Terminal Board ..............A-19 The Head Board ................. A-22 Circuit Diagrams, Schematics, and Lubrication A-25 and Adhesive Diagrams ............. DFX-8000...
  • Page 9 Printer Initialization ..............1-49 Hardware initialization ............1-50 Software initialization ............Major Units ..................1-50 1-50 Printer Mechanism ..............Power Supply Board ..............1-52 Main Board ................1-54 Driver Board ................1-56 Control Panel ................1-57 Housing ..................1-58 DFX-8000...
  • Page 10 General Description List of Figures Figure 1-1 DFX-8000..............Figure 1-2 Print Head Pin Configuration........Figure 1-3 Unsuitable Paper............Figure 1-4 Form Override Area ..........Figure 1-5 Perforation Pitch ............Perforation at the Edge of the Paper....... 1-8 Figure 1-6 Figure 1-7 Perforation Intersections..........
  • Page 11 1-47 with Labels............Table 1-22 Model 3C65 Printer Mechanism 1-51 Components ............BOPS Power Supply Board Components ....1-52 Table 1-23 C030 MAIN Board Components ........ 1-54 Table 1-24 C030 DRV Driver Board Components ...... 1-56 Table 1-25 l-iii DFX-8000...

  • Page 12: Features

    Features The DFX-8000 is an 18-pin serial dot matrix printer with a maximum printing speed of 1066 cps. The DFX-8000 is designed for business use and provides high- speed printing, heavy duty specifications, and continuous paper handling. The DFX-8000’s main features are: Maximum printing speed: 1066 cps;...
  • Page 13 General Description Figure 1-1 shows the DFX-8000 and Table 1-1 lists the options and expendables available for the DFX-8000. Table l-l. Options wtd ExpertdaMes Name Group Code Number Options Pull tractor Paper cutter Optional interface board series 32KB serial buffer...

  • Page 14: Specifications

    General Description Specifications This section provides the specifications for the DFX-8000. Printing Specifications Serial impact dot matrix Printing method: 18 wires (two columns of nine wires, as shown in Figure 1-2) Pin configuration: Figure l-2. Print Head Pin Configuration Dot matrix:...

  • Page 15: Line Spacing

    Condensed pica 1.05 1.48 Elite 2.11 Condensed elite 0.85 1.27 Notes: The total character width is the total of the character width and the character spacing (in dots). In proportional mode, the total character width varies because character spacing varies. DFX-8000...

  • Page 16: Paper Specifications

    Paper Specifications Feeding method: Tractor feed Continuous fan-fold paper Type: Single-part forms Multi-part forms Forms with labels Overlapping multi-part forms High quality paper 4 to 16 inches (101 to 406 mm) 3.5 inches (88.9 mm) minimum for forms with labels DFX-8000...

  • Page 17: Figure 1-3 Unsuitable Paper

    When using the optional pull tractor, do not print on the top 4.8 inches (120 mm) of the first page. Use only clean paper with no folds, creases, or tears. The figure below shows paper you should not use. Figure 13. Unsuitable Paper DFX-8000...

  • Page 18: Figure 1-4 Form Override Area

    General Description Form override printing is available 20 lines after paper end. The paper Figure 14. Form Override Area U n c u t Figure 15. Perforation Pitch...

  • Page 19: Figure 1-7 Perforation Intersections

    General Description Perforations must have uncut parts on both edges of the paper. The figure below shows the perforation at the edge of the paper. Figure 1-7. Perforation Intersections DFX-8000...

  • Page 20: Figure 1-8 Raised Portion At A Perforation

    Sprocket holes must be circular and may have teeth. The figure below shows some sample sprocket holes. Figure 19. Sprocket Holes Remove any pieces of paper remaining in the sprocket holes. Paper should be fan-folded at the horizontal perforations. Never use improperly folded paper, such as the paper shown below. DFX-8000...
  • Page 21 Multi-part forms Printable area: Same as the printable area for single-part forms shown in Figure 1-11. Number of copies: Front tractor: Six sheets maximum (one original plus five copies) Rear tractor: Four sheets maximum (one original plus three copies) 1-10 DFX-8000...

  • Page 22: Printing Quality

    Forms joined with dotted paste are recommended for better printing quality. For multi-part forms joined with dotted paste, the form sheets can be joined on either a single side or both sides. The following figure shows the recommended paste positions. DFX-8000 1-11...

  • Page 23: Figure 1-13 Stapled Area A

    P r i n t a b l e s u r f a c e o : L e s s t h o n p a p e r t h i c k n e s s DFX-8000 1-12...

  • Page 24: Figure 1-14 Stapled Area B

    The binding area must be flat. The figure below shows a cross section of the stapled area. Figure 1-15. Stapled Area C Never use forms joined with metal staples. Dots of paste and paper staples must be outside the printable area. 1-13 DFX-8000...

  • Page 25: Labels

    Figure 1-16. Sprocket Holes Labels Printable area: See Figures 1-17 and 1-18. I I I I I I I I Inside of each label Figure l-l 7. PrintaIde Area for Labels A DFX-8000 1-14...

  • Page 26: Table

    The labels may come off the backing and stick to the printer. When using labels, do not use the paper select or the top of form function. Do not use the short tear off feature with labels. 1-15 DFX-8000...
  • Page 27 Labels must be positioned in the same location on each page. The figure below shows a label and carrier. Label Label w r i e r Use only labels with rounded corners. The label surface must be flat. 1-16 DFX-8000...

  • Page 28: Overlapping Multi-Part Forms

    When labels are loaded in the printer, do not feed the paper with labels backward and do not use the paper select function. Labels must never be fed backward through the printer because they can easily come off the backing and cause a paper jam. 1-17 DFX-8000...

  • Page 29: Ribbon Specifications

    Overlapping multi-part forms should be joined together at the top of the page. The figure below shows the overlapping multi-part form binding. Ribbon Specifications Ribbon cartridge: Ribbon pack: Ribbon pack exchanges: Color: Dimensions: Cartridge: 20.2 506 W) X 23 Ribbon: Life: DFX-8000 1-18...

  • Page 30: Electrical Specifications

    10 M ohms minimum (between AC line and chassis) Dielectric strength: 1000 VAC (rms) for one minute or 1200 VAC (rms) for one second Environmental Specifications Temperature: Operating: Storage: Humidity: Operating: Storage: Impact proof: Operating Storage: Vibration proof: Operating: Storage: Physical Specifications Dimensions: Weight: DFX-8000 1-19...

  • Page 31: Reliability

    General Description Reliability MCBF: 24 million lines (excluding print head) MTBF: 6000 poh (power-on hours) Print head life: 400 million characters (14 dots/character) Safety Approvals Safety standards: R.F.I.: Interface Specifications Parallel interface Type: DFX-8000 1-20...
  • Page 32 GND (Pair 9 . DATA8 GND (Pair 10. ACKNLG GND (Pair 3 0 . GND (Pair 12. PE 1 3 . +sv 3 1 . 3 2 . ERROR 3 3 . I S . 1 6 . 1-21 DFX-8000...

  • Page 33: Table 1-6 Pin Assignments For The Parallel Interface

    (The signal level can be -FEED XT fixed to LOW by turning on DIP switch 2-4.) Not used. CHASSIS Printer chassis GND. In the printer, the chassis GND and the logic GND are isolated from each other. Twisted-pair return signal GND level. DFX-8000 1-22...
  • Page 34 “1” and short to GND should be “0”) and the ACKNLG pin is connected to the STROBE pin, test printing (including the interface circuit) can be performed without external equipment. A short interface cable is recommended to reduce noise. See Table 1-7 for DCl/DC3 control. DFX-8000 1-23...

  • Page 35: Serial Interface

    7 or 8 (set with a DIP switch) Data bit: Parity bit: Odd, even, or none (set with a DIP switch) 1 bit or more Stop bit: Bit rate: 300,1200,9600,19200 bps (set with a DIP switch) Logic level: -3 to -27 DFX-8000 1-24...
  • Page 36 General Description Table 18. DTR and X-ONIX-OFF Control Control Code Printer State and Operation X-OFF When the available (empty) space in the Input data buffer decreases to 512 bytes (buffer full), an error (off line, error, or paper end) state results. Data reception is disabled.
  • Page 37 General Description Data Connector: EIA standard 25pin connector. See the figure below. 1. FG 2. TXD 3. RXD 7. GND 20. REV 11. DTR N.G. l-26. Standard 25~Fin Connector DFX-8000 1-26...

  • Page 38: Table 1-9 Pin Assignments For The Serial Interface

    Not used Signal ground Not used Data terminal ready. (internally connected to pin 20 in parallel mode.) 12-19 Not used Reverse. Has the same function as DTR. (internally connected to pin 20 in parallel mode .) 21-25 Not used DFX-8000 1-27...

  • Page 39: Operating Controls

    The FORM FEED/COPY button serves as an AUTO LOAD button. If you load paper onto a tractor and then press FORM FEED/COPY, the printer advances the paper to the platen. The paper is fed from the tractor specified by the PAPER SELECT indicator. DFX-8000 1-28...
  • Page 40 The paper is fed from the tractor specified by the PAPER SELECT indicator. When paper is loaded in the printer: If you press LINE FEED/LOAD once quickly, the printer feeds the paper one line. If you hold down this button, the printer feeds the paper continuously. 1-29 DFX-8000...
  • Page 41 MICRO FEED button feeds paper backward. CAUTION Never press the reverse-feeding (bottom) MICRO FEED button when you are using labels. If labels are fed backward through the printer, a paper jam may result. TOP OF FORM DFX-8000 1-30...

  • Page 42: Control Panel Indicators

    General Description CAUTION FRONT/REAR CAUTION Control panel indicators POWER (green) Off. READY (greed PAPER OUT (red) DFX-8000 1-31...

  • Page 43: Self Test Function

    General Description ON LINE (green) TEAR OFF (green) (green) Self Test Function The DFX-8000 provides a self test (self printing) function that checks the following: The control circuit The printer mechanism The print quality To run the self test in draft mode, turn on the printer while holding down the LINE FEED button.

  • Page 44: Hexadecimal Dump Function

    General Description The figure below shows a sample self test printout. Normal draft mode Hexadecimal Dump Function DFX-8000 1-33...

  • Page 45: Dip Switch Settings

    ESC/P mode: see the international character set character set table below. IBM mode: default character IBM mode: see the note below. table Character table 2 is selected when any one of these switches is turned off. See page A-9 in the Spain 1-34 DFX-8000...
  • Page 46 See the tables below. SW 2-6 Interface/Parity SW 2-5 Parallel Serial/odd Serial/even Serial/none Baud Rate Selection Baud Rate I SW 2-7 I SW 2-8 19200 bps I off I off 9600 bps I off I On 1200 bps 300 bps DFX-8000 1-35...
  • Page 47 7. The form feed code (OCH) is ignored when the printing line is at the top of form position, DIP switch 2-1 is on, and the printer is in IBM mode. DFX-8000 1-36...

  • Page 48: Table 1-13 Character Set Selection

    Table l-14. Interface Settings interface Setting Switch 2-5 Switch 2-6 Parallel interface Serial interface, odd parity Serial interface, even parity Serial interface, no parity Table 1-15. Baad Rate Switch 2-7 Switch 2-8 Baud Rate (bps) 19206 9600 1200 1-37 DFX-8000...

  • Page 49: Jumper Settings

    256KB Short 256KB (+ 5) Short Fixed to short Fixed to +5 side Buffer Full Printing Buzzer Once when the BEL command is input. !!!! X 5 times Twenty times for a paper end. !!!! X 1 times DFX-8000 1-38...

  • Page 50: Error Detection

    General Description Error Detection DTR (REV) RAM check 1-39 DFX-8000...

  • Page 51: Paper End Detection

    General Description Paper End Detection MARK (DC code): X-OFF (DC3/13H) Cover Open Detection DFX-8000...

  • Page 52: Paper Thickness Detection

    General Description Paper Thickness Detection Paper Width Detection Non-volatile User-defined Characters Paper Memory Function 1-41 DFX-8000...

  • Page 53: Figure 1-30 Forms With Labels

    General Description On forms with labels, the area where the label is attached is thicker than the Figure 130. Forms with Labels Figure 1-31. Overlapping Multi-part Forms 1-42 DFX-8000...

  • Page 54: Saving Paper Format And Thickness Information

    Saving paper format and thickness information Saving information for overlapping multi-part forms Table 1-17. Selecting a Paper Memory Area Paper Memory Area Switch 3-4 Table 1-18. Setting the Page Length Page Length Switch 3-2 11 inches 12 inches DFX-8000 1-43...
  • Page 55 Forms Switch 3-6 Multi-part Forms Switch 3-5 with Labels Valid invalid Saving information for multi-part forms with labels Table l-20. Selecting Multi-part Forms with Label-s Overlapping Multi-part Forms Multi-part Forms Switch 3-5 with Labels Switch 3-8 invalid Valid 1-44 DFX-8000...

  • Page 56: Label's Left Edge

    General Description F E E D DFX-8000 1-45...

  • Page 57: Figure 1-35 Aligning The Vertical Line With The Label's Right Edge

    General Description mask. F E E D Figure 135. Aligning the Vertical Line with the Label’s Right Edge DFX-8000 1-46...

  • Page 58: Table 1-21 Selecting Overlapping Multi-Part Forms With Labels

    General Description Saving information for overlapping multi-part forms with labels Table 1-21. Selecting Overlapping Multi-part Forms with Labels Overlapping Multi-part Forms Multi-part Forms Switch 3-5 with Labels Switch 3-6 Valid Valid DFX-8000 1-47...

  • Page 59: Paper Cutter

    General Description Loading paper format information from memory Paper Cutter Copy Mode DFX-8000 1-48...

  • Page 60: Printer Initialization

    General Description Printer Initialization Hardware initialization DFX-8000 1-49...

  • Page 61: Major Units

    General Description Software initialization Major Units Printer Mechanism DFX-8000 1-50...
  • Page 62 Paper bail top position Top PE sensor Paper width sensor (PW sensor) Reflection-type photo interrupter / 5 VDC Tractor select sensor switch (T switch) Mechanical switch I 5 VDC Pull tractor sensor switch (PT switch) Mechanical switch I5 VDC DFX-8000 1-51...

  • Page 63: Power Supply Board

    Table l-23. BOPS Power Supply Board Components Location Description Component Name PWM switching regulator controller TL594 Error amplifier Error amplifier TL5431 High precision shunt regulator FET transistor I 800 V, 1.5 A, 40 W FET transistor / 50 V, 2 A, 900 mW DFX-8000 1-52...
  • Page 64 General Description The figure below shows the power supply board. 1-53 DFX-8000...

  • Page 65: Main Board

    RS-232C line driver I TTL Ceramic oscillator I 2 MHz Ceramic oscillator I 14.74 MHz BAT1 CR1 7335SE-FTl Lithium battery Gate array / mechanism control I control panel Gate array I interface I MMU / head control Note: MMU...Memory Management Unit DFX-8000 1-54...
  • Page 66 General Description The figure below shows the main board. Figure 1-38. C&WIfAlNBoC DFX-8000 1-55...

  • Page 67: Driver Board

    Transistor I 60 V, 5 A, 20 W I external fan motor driver Transistor / 50 V, 5 A, 40 W / head cooling fan motor and plunger driver Transistor / 60 V, 1 A, 1 W / PG and RF motor drivers DFX-8000 1-56...

  • Page 68: Control Panel

    General Description The figure below shows the driver board. Control Panel Figure l-40. Control Panel DFX-8000 1-57...

  • Page 69: Housing

    General Description Housing DFX-8000 1-58...

  • Page 70: Figure 1-1 Dfx-8000

    Detection Circuits Connected to the General Purpose Ports ..2-37 Ribbon Feed Motor/External Fan Control/Drive Circuit ..2-39 Paper Feed Motor Control/Drive Circuit ........2-40 Platen Gap Motor Control/Drive Circuit ........2-42 Carriage Motor Control/Drive Circuit ........2-46 Print Head Control/Drive Circuit ..........2-49 DFX-8000...
  • Page 71 Figure 2-24 Platen Gap Setup Conceptual Diagram....2-45 Figure 2-25 Carriage Control/Drive Circuit Block Diagram..2-46 Figure 2-26 Print Head Control/Drive Circuit Block Diagram... 2-49 Figure 2-27 Print Head Drive Circuit Block Diagram....2-50 Figure 2-28 DFX-8000 2-ii...
  • Page 72 Specifications ............2-41 PG Motor Control/Drive Circuit Specifications..2-43 Table 2-25 Carriage Motor Control/Drive Circuit Table 2-26 Specifications ............2-47 Control Mode Circuit Operation ......2-47 Table 2-27 Print Head Control/Drive Circuit Specifications ..2-52 Table 2-28 2-iii DFX-8000...

  • Page 73: Printer Mechanism

    Principles of Operation Printer Mechanism Print Head Mechanism...
  • Page 74 Coil resistance 2.93 +0.2 ohms at 77OF (25%) Drive period Typical 417 j~sec or more Minimum 397 psec Drive voltage 35.5 to 37.5 VDC Insulation resistance 500 VDC: 100 Mohms or more Environmental conditions Temperature Humidity 10% to 85% RH DFX-8000...

  • Page 75: Carriage Mechanism

    Two-phase six-pole PM-type stepping motor, centrifugal fan Supply voltage 32.5 35.0 VDC (*7%) Coil resistance 61 + 4.3 ohms/phase at 77OF (25%) Drive frequency 1152 +50 pps Rotational direction Clockwise or counterclockwise, undefined Excitation system l-l phase excitation Carriage Mechanism DFX-8000...
  • Page 76 Principles of Operation Print head Encoder plate Sensor plate Carriage guide shaft Carriage motor Figure2-2. Carriage Mechanism DFX-8000...
  • Page 77 Principles of Operation Table 23. Carriage Motor Specifications DC servo motor Supply voltage 36.5 VDC f resistance 2.13 ohms at 77OF (25%) Armature Table24 Encoder Specifications Light emitting element Light receiving element Photodiode Supply voltage I 5 VDC +5% Output waveform Two-phase rectangular pulses (lTL level) Phase difference Resolution...
  • Page 78 Principles Operation Table 2-5. External Fan Specifications DC brushless motor (including ball bearings) 36.5 VDC f 1 V Supply voltage 400 +20 ohms Fan resistance 220 +2Oohms Coil resistance 5700 rpm Rotational speed Interlock switch...

  • Page 79: Platen Gap Adjustment Mechanism

    Principles of Operation Platen Gap Adjustment Mechanism head Carriage guide shaft Platen gap transfer gear Platen gap motor Figure 24. Platen Gap Acljustment Mechanism motor...

  • Page 80: Ribbon Feed Mechanism

    Principles of Operation .0006 inches (.015 mm) of horizontal distance. The detection range is 0 to .028 specifications. Table 2-6. Pluten Gap Motor Specijhztims Four-phase 48-pob PM-type stepping motor Supply voltage 36.5 f 1 VDC Winding resistance 250 + 18 ohms/phase at 77OF (25OC) Drive frequency 285 pps Excitation system...
  • Page 81 Principles of Operation Ribbon Cartridge Ribbon Feed Select Gear Ribbon Feed Gear Ribbon Motor motor Table 28. Ribbon Motor Specifications Four-phase 48-pole PM-type stepping motor Supply voltage 36.5 *l VDC 150 + 10 ohms/phase at 77OF (25OC) Drive frequency 720 pps Excitation system 2-2 phase excitation...

  • Page 82: Paper Feed Mechanism

    Principles of Operation Paper Feed Mechanism Pull tractor sensor <$k?& Tension roller ; A Tractor select Paper feed transmission gear 2-10...
  • Page 83 Principles of Operation Paper bail Tension roller Tractor select gear Front tractor gear Front paper end sensor Paper feed motor Front tractor 2-11...
  • Page 84 Principles Operation Paper bail Tension roller Tractor select gear -\ Rear paper end sensor Paper feed transmission gear Rear tractor gear Figure 2-8. Rear Tractor 2-12...
  • Page 85 Principles of Operation Table 29. Paper Feed Motor Specifications Four-phase 200~pole HB-type stepping motor 36.5 f 1 VDC Supply voltage Winding resistance 2.85 + 0.3 ohms Drive frequency Medium speed mode 2610 pps 4274 pps High speed mode l-2 phase excitation Excitation system Table 2-10.
  • Page 86 Sensors at the front and rear tractors: Detector Photo interrupter Open collector Supply voltage 5 VDC &5% Signal mode With paper HIGH Sensor at the paper ball: Detector Photo reflector Open collector Supply voltage 5 VDC *5% Signal mode With paper HIGH 2-14...
  • Page 87 Principles of Operation Paper Fringes Paper chip Groove Ribbon mask Print head 2-15...
  • Page 88 Principles of Operation Paper Bail Shaft Figure 2-10. Plunger Mechanism Table 2-12. Plunger Specifications DC solenoid 36.5 Supply voltage 12.5 ohms + 5Oh Winding resistance 2-16...
  • Page 89 Principles of Operation Figure 2-11. Tractor Select Mechanism 2-17...

  • Page 90: Paper Width Detection Mechanism

    Principles of Operation Table 2-13. Tractor Select Sensor S’cifications Micro switch 5 VDC *5% Switch modes Rear Closed (on) Paper Width Detection Mechanism Figure 2-12. Paper Width Detection Mechanism 2-18...

  • Page 91: Power Supply Circuit

    Principles of Operation Table 2-14. Paper Width Detector Specifications Photo reflector Supply voltage 5 VDC *5% Emitter follower With reflection : HIGH (+5 V) Output mode (paper detection) Power Supply Circuit Table 2-15. Power Specifications Primary Fuse Rating Name Input Voltage (VAC) BOPS 100 flO%l 2-19...

  • Page 92: Dc Voltages And Applications

    DC Voltages and Applications Application Voltage Rated Current Printer mechanism voltage Print head drive Printer mechanism vottage Print head drive Printer mechanism vottage Plunger Print head fan Carriage motor Paper feed motor Platen gap motor Ribbon feed motor Power supply board cooling fan Printer mechanism voltage Plunger holding Platen gap motor holding...

  • Page 93: Power Supply Circuit Operation

    Principles of Operation Power Supply Circuit Operation Figure 2-13. Power Supply Section Block Diagram 2-21...

  • Page 94: +35 V Line

    Principles of Operation +35 V line +5 V line 2-22...

  • Page 95: Cl Signal

    Principles of Operation CL signal SO signal 2-23...

  • Page 96: Control Circuit

    Principles of Operation Control Circuit 2-24...

  • Page 97: Main Cpu Ppd70322 (5E)

    Principles of Operation Main CPU pPD70322 (5E) 2-25...

  • Page 98: Gate Array E05A38Na (6A)

    Principles of Operation Gate Array E05A36NA (6A) Gate Array E05A16GA (2E) 2-26...

  • Page 99: Interface Circuit

    Principles of Operation Interface Circuit DATA BUS RAM AREA PARALLEL I/F REV RXD TXD SERIAL I/F 2-27...

  • Page 100: Parallel Interface

    Principles of Operation Parallel interface Serial interface 2-28...

  • Page 101: Reset Circuit

    Principles of Operation Reset Circuit FILTER RESET OUT OPTION I/F RESET SIGNAL - Figure 2-16. Reset Circuit Block Diagram 2-29...

  • Page 102: Memory Backup Circuit

    Principles of Operation Table 2-l 7. Power-On Reset Status + 12 VDC Line Level Q2 Status RESET signal vx output GND (0 V) HIGH Memory Backup Circuit BACK UP VOLTAGE SUPPLY CIRCUIT POWER SUPPLY SO SIGNAL Figure 2-17. Memory Backup Circuit Block Diagram 2-30...
  • Page 103 Principles of Operation 2-31...
  • Page 104 Principles of Operation CE (SRAM:SC) SRAM Status SIGNAL High Enable (LOW) On Enable (HIGH) Writes data - Backup Disable Disable (LOW) No backup (HIGH) Off Table Z-19. Buttery Specifications Nominal voltage Operating temperature -20 to +7O’C Safety standard UL approved Discharging duration 1700 to 3000 hours or more (see Note) Note: The specifications above are for continuous discharging duration measured under the...

  • Page 105: A-D Converter Detection Circuit

    Principles of Operation A-D Converter Detection Circuit PRINTER MECHANISM DRIVER BOARD i AVREF RF/H-FAN DRIVE ; VOLTAGE HEAD TEMP. - - - - - c’ I (LAMP) 2-33...
  • Page 106 Principles of Operation Table 2-20. A-D Converter Port lh&i.ons Signal Name Function Operation Detects the fluctuation Determines when the voltage is (32 to 36 VDC) of the driver abnormal (sounds the buzzer) circuit voitage (VP3) H. TMP Detects head coil overheating Stops printing until the head coil temperature drops (the print head moves to the home position and is...

  • Page 107: Interrupt Port Detection Circuit

    Principles of Operation Interrupt Port Detection Circuit POWER SUPPLY BOARD CASE OPEN SENSOR , ----___________( C O V E R S W b 2-35...
  • Page 108 Principles of Operation Table 2-21. Interrupt Port Detection Sign.& Functions Port Signal Name Function Operation Detects voltage drop at the Backs up the memory (see the primary power supply (power off) Memory Backup Circuit section) INTO ON LINE Detects the ON LINE button Switches between on line and off line Detects the carriage motor...

  • Page 109: Detection Circuits Connected To The General Purpose Ports

    Principles of Operation Detection Circuits Connected to the General Purpose Ports CUT.HP CUTTER GAP A GAP B DRIVER BOARD MAIN BOARD 2-37...
  • Page 110 Principles of Operation Table 2-22. General Purpose Ports Assigned to Detect Circuit Signals Port Signal Name Function Operation Controls the optional cutter CUT.HP Detects the cutter home position signal when the optional cutter unit is mounted P .TRCT Detects the optional tractor unit Controls the optional tractor unit Detects the optional cutter unit Controls the optional cutter...

  • Page 111: Ribbon Feed Motor/External Fan Control/Drive Circuit

    Principles of Operation Table 2-22. Gene& Pwpose Ports Assigned to Detect Circuit Signah (continued) Operation Port Signal Name Function CPU (continued) Detects the front paper end Controls paper feeding (for confirming the paper load/eject sensor signal operation and front/rear paper switch operation;...

  • Page 112: Paper Feed Motor Control/Drive Circuit

    Principles of Operation Table 2-23. Ribbon Feed Motor Control/Drive Circuit Specifications External Fan Ribbon Feed Motor 36.5 f 1 VDC 36.5 f 1 VDC Supply voltage 70 mA (average)/90 mA (max.) Current consumption 0.10 A (average) 720 PPS Drive frequency Driving method Unipolar constant voltage drive, 2-2 phase excitation...
  • Page 113 Principles of Operation Table 2-24. Paper Feed Motor ControlXDrive Circuit Specificathms Supply voltage 36.5 f 1 VDC (voltage applied to the driver circuit) Current consumption (per phase) 1.75 f 0.20 A (driving, average) 0.20 f 0.02 A (holding) 2610 PPS (Middle speed mode, constant Speed) 4274 PPS (High speed mode, constant speed) Driving method Chopper constant current drive, l-2 phase excitation...

  • Page 114: Platen Gap Motor Control/Drive Circuit

    Principles of Operation Platen Gap Motor Control/Drive Circuit PRE-DRIVE CIRCUIT PG MOTOR - j DRIVE PG MOTOR CIRCUIT GAPP PG SENSOR GAPE MAIN BOARD DRIVER BOARD 2-42...
  • Page 115 of Operation Principles PG Motor Supply voltage 36.5 f 1 VDC (voltage applied to the driver circuit) Current consumption (per phase) 0.2 A (driving, average) 0.02 A *:5 mA (holding) Drive frequency 285 PPS Driving method Unipolar constant voltage drive, 2-2 phase excitation PG Sensor Supply voltage 5 VDC *5% (voltage applied to the driver circuit)
  • Page 116 Principles of Operation P a p e r 2-44...
  • Page 117 Principles of Operation Platen Surface PGEND Figure 2-25. Platen Gap Setup Conceptual Diagram 2-45...

  • Page 118: Carriage Motor Control/Drive Circuit

    Principles of Operation Carriage Motor Control/Drive Circuit I /// , I______---_------..-- 2-46...
  • Page 119 Principles of Operation Carriage Motor Supply voltage 36.5 f 1 VDC Current consumption 4.0 A (at start-up, average) 1.5 A (constant speed, average) 5.0 A (deceleration, average) Rotational speed 2665 rpm (Super Draft mode) 2000 rpm (Draft mode) 1000 rpm (NLQ mode) Driving method Bipolar constant current drive Encoder...
  • Page 120 Principles of Operation m o v i n g . 2-40...

  • Page 121: Print Head Control/Drive Circuit

    Principles of Operation Print Head Control/Drive Circuit Figure 2-27 shows a block diagram of the print head control/drive circuit. F A N T M P . : HEAD COOLING HEAD FAN TOO2 DRIVER TOO 1 HEAD TEMP. P R I N T H E A D r-, DRIVER PRINTHEAD HEAD DRIVER...
  • Page 122 Principles of Operation PNP SIDE (STK66 125) NPN SIDE (STK66025) < PRINTHEAD DRIVE WAVEFORM > 2-50...
  • Page 123 Principles of Operation 2-51...
  • Page 124 Principles of Operation Table 2-28. Print Head Control/Drive Circuit Speczfications Print Head Supply voltage Current consumption 7.36 A (head total, average, printing 14 dots/character) 8.24 A (head total, maximum, printing 14 dots/character) 29.07 A (head total, average, g-pin full driving mode) 33.85 A (head total, maximum, g-pin full driving mode) 50.85 A (head total, peak, g-pin full driving mode) 54.90 A (head total, maximum peak, O-pin full driving mode)
  • Page 125 Chapter 3 Disassembly and Assembly Before Starting ................Tools ................... Service Delivery Standard Checklist ........Disassembly and Assembly ............. 3 - 1 1 Replacing the Print Head ............Replacing the ROM ..............3-20 3-21 Removing the Housing .............. 3-21 Removing the top cover ............3-22 Removing the side covers.............
  • Page 126 Disassembly and Assembly List of Figures Figure 3-l Carrying the DFX-8000..........Figure 3-2 Packing the DFX-8000 ..........Figure 3-3 Packing Materials ............ Figure 3-4 Disassembly Flow Chart .......... 3-10 Figure 3-5 Exclusive Print Head Kit for the 3-11 DFX-8000 ............

  • Page 127: Table 1-3 Table

    Figure 3-59 List of Tables Tools................3-5 Table 3-l Special Tools ............. Table 3-2 Small Parts Abbreviations List........ ;:; Table 3-3 Screw Part Names and Illustrations......3-7 Table 3-4 Table 3-5 Service Delivery Standard Checklist....... 3-8 DFX-8000 3-iii...

  • Page 128: Before Starting

    Disassembly and Assembly 3 Before Starting...
  • Page 129 Disassembly and Assembly...
  • Page 130 Disassembly and Assembly Figure 3-2. Packing the DICK&XXI...
  • Page 131 Disassembly and Assembly Transport locking brackets Carriage guide support bar Figure 33. Packing Materials...

  • Page 132: Tools

    Disassembly and Assembly Tools Table 3-1. Tools Part No. 8743800200 Box driver (32 inches or 8 mm) E-ring holder no. 3 (Phillips head, adjustable torque) A .mandatory B .recommend...
  • Page 133 Disassembly and Assembly Table 3-2. Special Tools Part No. Name I No. Used for removing the printer mechanism. Table 33. Small P&s Abbrariations List Abbreviation Part Name Cup screw Cross-bind head screw Cross-bind head screw with outside-toothed washer Cross-bind head, B-tight screw Cross-bind head, S-tight screw Cross-bind head, S-tight screw with outside toothed washer Cross-pan head screw with spring washer...
  • Page 134 Disassembly and Assembly Table 34. Screw Part Names and lUustr&ns Washer Head (assembled) Side 1 ._Plain washer 1 .Normal 2. s-tight (with Notch) 4. lapping...

  • Page 135: Service Delivery Standard Checklist

    Disassembly and Assembly Service Delivery Standard Checklist Table 35. Service Delivery Standard Checklist Check When Completed Standard Item See Chapter 4, Adjustment. Make sure all the required adjustments are completed and the results of the adjustments are within the specified tolerances.

  • Page 136: Disassembly And Assembly

    Disassembly and Assembly Disassembly and Assembly...
  • Page 137 Disassembly and Assembly START Removing the Removing the platen sensor Removing the Removing the printer interlock switch mechanism Figure 34. Disassembly Flow Chart 3-10...

  • Page 138: Replacing The Print Head

    Disassembly and Assembly Replacing the Print Head Print head unit Oil (02) Print head cable protection sheet Instruction manual Ribbon mask assembly 3-11...
  • Page 139 Disassembly and Assembly Figure 34. Disconnecting the AC Cable 3-12...
  • Page 140 Disassembly and Assembly Figure 3-7. Removing the Ribbon Cartridge 3-13...
  • Page 141 3-14...
  • Page 142 3-15...
  • Page 143 Disassembly and Assembly Figure 3-10. Removing the Print Head 3-16...
  • Page 144 Disassembly and Assembly Figure 3-11. Removing the Ribbon Mask 3-17...
  • Page 145 Disassembly and Assembly Assembly notes: Figure 3-12. Installing the Print Head 3-18...

  • Page 146: Adjustment Required

    Disassembly and Assembly Adjustment required: 3-19...

  • Page 147: Replacing The Rom

    Disassembly and Assembly Replacing the CAUTION Figure 3-14. Replacing the ROM...

  • Page 148: Removing The Housing

    Disassembly and Assembly Removing the Housing Removing the top cover 3-21...

  • Page 149: Removing The Side Covers

    Disassembly and Assembly Removing the side covers Figure 3-16. Power Switch Wiring Diagram 3-22...
  • Page 150 Disassembly and Assembly screws Side covers Right side cover 3-23...

  • Page 151: Removing The Front Cover

    Disassembly and Assembly Removing the front cover Figure 3-18. Removing the Front Cover 3-24...
  • Page 152 Disassembly and Assembly Figure 3-19a Removing the Upper Panel 3-25...

  • Page 153: Removing The Bottom Panel

    Disassembly and Assembly Removing the bottom panel Figure 3-20. Removing the Ground Cable Screws 3-26...
  • Page 154 Disassembly and Assembly cables 3-27...
  • Page 155 Disassembly and Assembly Connector Connector 3-28...
  • Page 156 Disassembly and Assembly CN2 and screws Bottom panel Rear cover 3-29...

  • Page 157: Removing The Circuit Boards

    Disassembly and Assembly Main board _ Figure 3-23. Removing the Bottom Panel 2 Removing the Circuit Boards 3-30...

  • Page 158: Removing The Main Board

    Disassembly and Assembly board Driver Front of unit Figure 3-24. Removing the Driver Board Removing the main board 3-31...
  • Page 159 Disassembly Assembly Main board Figure 3-25. Removing the Main Board Adjustments required: 3-32...

  • Page 160: Removing The Power Supply Board

    Disassembly and Assembly Removing the power supply board /screw 12) screw Power supply board Removing the control panel 3-33...
  • Page 161 Disassembly and Assembly 3-34...

  • Page 162: Removing The Interlock Switch

    Disassembly and Assembly screw Assembly note: Removing the Interlock Switch 3-35...

  • Page 163: Removing The Printer Mechanism

    Disassembly and Assembly Back side of screw \ Interlock H Lower - housing Connector 0 Removing the Printer Mechanism WARNING 3-36...
  • Page 164 Disassembly and Assembly Figure 3-29. Disconnecting the Cables fkom Connectors CN? and CNlO 3-37...
  • Page 165 Disassembly and Assembly Printer Mechanism mounting Lower housing 3-38...
  • Page 166 Disassembly and Assembly Lifting handle Lifting handle Frame Figure 331. Raising the Printer Mechanism 3-39...

  • Page 167: Removing Printer Mechanism Components Without Removing The Printer Mechanism

    Disassembly and Assembly Assembly note: Adjustment required: Removing Printer Mechanism Components Without Removing the Printer Mechanism Removing the paper width sensor Removing the paper guide support plate 3-40...
  • Page 168 Disassembly and Assembly Front Cover Paper guide support Plate Removing Assembly note:...

  • Page 169: Removing The Carriage Home Position Sensor

    Disassembly and Assembly Removing the carriage home position sensor Remove Figure 343. Removing the Carriage Home Position Sensor Assembly note: 3-42...

  • Page 170: Removing The External Fan

    Disassembly and Assembly Removing the external fan Fan cover screws Assembly notes: 3-43...

  • Page 171: Removing The Loading Solenoid

    Disassembly and Assembly Removing the loading solenoid solenoid Figure 335. Removing the Lading Solenoid Assembly note:...

  • Page 172: Removing The Ribbon Feed Motor And Tractor Select Sensor

    Disassembly and Assembly Removing the ribbon feed motor and tractor select sensor Removing the ribbon feed change lever unit Carriage damper Ribbon feed gear cover Ribbon feed gear 3-45...
  • Page 173 Disassembly and Assembly Ribbon feed transmission gear Ribbon feed change lever Unit Figure 337. Removing the Ribbon Feed Change Lever Unit Disassembling the ribbon feed change lever unit 3-46...
  • Page 174 Disassembly and Assembly Washer Leaf Spring Change Tractor Lever Spring Change Lever (Lower) Tractor Tractor Sensor Ribbon Motor Figure 3-38. Disassembling the Ribbon Feed Change Lever Unit 3-47...

  • Page 175: Removing The Upper Paper End Sensor

    Tractor Select Cam Lever Tractor Select Figure 339. Tractor Select Lever Mounting Position Removing the upper paper end sensor DFX-8OOO 3-48...
  • Page 176 Disassembly and Assembly Paper bail shaft E ring (6) r bail Pape r bail Wire Figure 340. Removing the Left Side of the Paper Bail 3-49...
  • Page 177 Disassembly and Assembly Leaf spring Paper bail lever E ring (6) ‘Paper bail shaft Paper bail spring Figure 341. Removing the Right Side of the Paper Bail...
  • Page 178 Disassembly and Assembly holder Removing the Paper Bail end sensor Figure 343. Removing the Upper Paper Guide 3-51...

  • Page 179: Removing The Pull Tractor Sensor

    Disassembly and Assembly Remove Upper paper guide Left frame Removing the pull tractor sensor from 3-52...
  • Page 180 Disassembly and Assembly Paper feed timing belt Tension pulley Tension roller Terminal board Remove 3-53...
  • Page 181 Disassembly and Assembly Tension roller Plain Leaf spring Shaft holder Figure 3-s%. Removing the Tension Roller Shaft I 3-54...
  • Page 182 Disassembly and Assembly II tractor sensor 3-55...

  • Page 183: Removing The Platen

    Removing the platen Adjustments required: 3-56...

  • Page 184: Removing Printer Mechanism Components After Removing The Printer Mechanism

    Disassembly and Assembly Removing Printer Mechanism Components After Removing The Printer Mechanism Removing the platen gap sensor and platen gap adjustment motor Platen adjustment motor Platen gap sensor Figure 340. Removing the Pluten Gap Sensor and Platen Gap A@&ment Motor 3-57...
  • Page 185 connect Platen qap Adjustment Motor Platen Gap Sensor CPS (P) (M3 X 6) Figure 351. Assembling the P&en G-a.. Sensor Adjustments required: 3-58...

  • Page 186: Removing The Paper Feed Motor

    Disassembly and Assembly Removing the paper feed motor Wire kaddle 3-59...
  • Page 187 Disassembly and Assembly feed Wire Paper feed motor cable Figure 343. Removing the Paper Feed Motor 3-60...
  • Page 188 Connecting the Gears (Left *a) 3-61...

  • Page 189: Removing The Front Tractor

    Disassembly and Assembly Removing the front tractor Hexagonal Front tractor Figure 355. Removing the Front Tractor 1 3-62...
  • Page 190 Disassembly and Assembly Front tractor u Figure 346. Removing the Front Tractor 2 3-63...

  • Page 191: Removing The Rear Tractor

    Disassembly and Assembly Removing the rear tractor Hexagonal Rear trktor unit Figure 357. Removing the Rear Tractor 1 3-64...

  • Page 192: Removing The Carriage Motor

    Disassembly and Assembly Shaft holder Leaf spring Plain washer Removing the carriage motor 3-65...
  • Page 193 Disassembly and Assembly Right frame ‘screws Carriage motor Pulley Timing belt Adjustments required: 3-66...
  • Page 194 Chapter 4 Adjustment Adjustment Overview ..............Writing the Print Head Adjustment Value ........4-3 Bidirectional Printing Adjustment ..........4-10 Parallelism Adjustment ..............4-13 Timing Belt Tension Adjustment ............ Mechanism Adjustment Value Measurement ........ 4-15 List of Figures Entering the Adjustment Mode ....... 4-4 Figure 4-1 Writing the Adjustment Value ........

  • Page 195: Adjustment Overview

    Adjustment 4 Adjustment Overview Table 4-1. Required Actjustments Adjustment Section Section Writing the Print Head Adjustment Value Replacing the Print Head Writing the Print Head Adjustment Value Removing the Main Board Bidirectional Printing Adjustment Bidirectional Printing Adjustment Removing the Printer Mechanism Bidirectional Printing Adjustment Removing the Platen Parallelism Adjustment...
  • Page 196 Adjustment Designation Part Number 8776702201 8777200301 8765114501 A: Mandatory E: Epson exclusive tool B: Recommended Table 43. Did Gauge and Base Number Name Description Part Number Dial Gauge For parallelism 8765111401 adjustment Dial Gauge For parallelism 8765114501 Base adjustment Note: Dial gauge base #F541 is exclusively for the DFX-6000. it cannot be used for the DFX-5000.

  • Page 197: Writing The Print Head Adjustment Value

    Adjustment Writing the Print Head Adjustment Value...
  • Page 198 Adjustment P A P E R S E L E C T F O R M F E E D L I N E F E E D...
  • Page 199 Adjustment TEAR OFF Figure 4-2. Writing the Adjustment...

  • Page 200: Bidirectional Printing Adjustment

    Adjustment Bidirectional Printing Adjustment...
  • Page 201 Adjustment Notes: 3. F'LYINGTIME:280to460,30 Printer mechanism code Beta u...
  • Page 202 Press the ON LINE button. Press the FORM FEED button. (The ALPHA value Press the ON LINE is printed.) button. Correct the ALPHA WIG. Is the paper ejected? decrement the value by -1. Is the paper ejected? Figure 4-4. Bidirectional Printing AcGjustrnent DFX-8000...

  • Page 204: Parallelism Adjustment

    Parallelism Adjustment Parallelism adjustment lever 4-10...
  • Page 205 Adjustment Screw 4-11...
  • Page 206 Adjustment 2.8 inches (70mm) 2.8 inches (7Omm) Platen Carriage Guide Shaft Pcuddism A&&m.ent move the move 4-12...

  • Page 207: Timing Belt Tension Adjustment

    Adjustment Timing Belt Tension Adjustment 4-13...
  • Page 208 Adjustment Figure 4-9. Carriage Timing Belt Tension A@bment...

  • Page 209: Mechanism Adjustment Value Measurement

    Adjustment Mechanism Adjustment Value Measurement measure 4-15...
  • Page 210 4-16...
  • Page 211 Adjustment START Reset tie SETA value by pressing the MICRO FEED(V) button while pressing the TEAR OFF button. between the print head and the olaten. Press the MICRO FEED (A) button while pressing the TEAR OFF button. (Do not forget how many times you press the MICRO FEED(A) button (X times).
  • Page 212 Adjustment < Example > Figure 4-11. Pull the Thickness Gauge 4-18...

  • Page 213: Troubleshooting

    Chapter 5 Troubleshooting General ................................ i-B Error Message Function Bypass of the Interlock Switch and the Cover-open Sensor ..5-3 Unit Replacement................5-6 Power Supply Board Unit Component Repair ........ 5-14 5-20 Driver Board Unit Component Repair ..........5-25 Main Board Unit Component Repair ..........
  • Page 214 Troubleshooting List of Tables Error Messages ............5-2 Table 5-1 Table 5-2 Problem Identification and Reference Pages ..............5-6 Table 5-3 Power Supply Board Unit Component Repair ..............5-14 Driver Board Unit Component Repair..... 5-20 Table 5-4 Main Board Unit Component Repair....... 5-25 Table 5-5 5-ii...

  • Page 215: General

    Troubleshooting 5 General UNIT REPLACEMENT...

  • Page 216: Error Message Function

    Troubleshooting Error Message Function Table 5-l. Error Messages Error indication Symptoms Cause Carriage Error Carriage motor failure Home position sensor failure (Total 18 times) Carriage lock (PG abnormality; parallelism inclination) Timing beit tension too loose Carriage driver blown (Ddver board) Gate array E05A38NA problem (Main board) I X 5 times Abnormal Voitage...

  • Page 217: Bypass Of The Interlock Switch And The Cover-Open Sensor

    Bypass of the Interlock Switch and the Cover-open Sensor Interlock Switch Rear Cover...
  • Page 218 Troubleshooting Figure 5-2. Bypass Method of Interlock Switch...
  • Page 219 Figure 53. Bypass Method of Cover-open Sensor...

  • Page 220: Unit Replacement

    Troubleshooting Unit Replacement Table 5-Z. Problem Identification and Reference Pages Problem Symptoms Reference page The power switch is on and the 9 No LEDs are lit on the control panel. printer does not operate. The mechanism doesn’t initialize. An error is detected when the The printer indicates an error.
  • Page 221 Troubleshooting Measure the output voltage from the power supply board. Replace Me fuse and pull out all the connectors on the output side of the power supply board. Replace the driver board. Replace the printer mechanism. 5 - 7...
  • Page 222 Troubleshooting Check the print head coil resistance. Refer to Figure S-10. Replace the print head. Check print head fan motor resistance. Refer to Table 2-l. Go to other Items.
  • Page 223 Measure the print head Replace the print head. Perform the carriage guide printing adlustrnent Replace the printer See other sections.
  • Page 224 Troubleshooting Replace the driver board. Abnormal? Replace the printer mechanism. Figure 5-7. Unit Replacement - 4 5-10...
  • Page 225 Troubleshooting paper in the printer. Replace the control panel. Replace the main board. Replace the 5-11...
  • Page 226 The printing is Replace the Interface cable. Replace the option board. Replace the main board. 5-12...
  • Page 227 Figure 5-10. Print Head Cable Signal Assignment 5-13...

  • Page 228: Power Supply Board Unit Component Repair

    Troubleshooting Power Supply Board Unit Component Repair Table 5-3. Power Supply Board Unit Component Repair Problem Symptom Cause Checkpoint Solution Voltage is not The line filter Check if any of Cl - C7 or Replace the output correctly. blown right after circuit element is abnormal replacement.
  • Page 229 Table 5-3. Power Supply Board Unit Component Repair (continued) Solution Checkpoint Replace Ql Observe the waveforms at and Q2, or the switching the primary side (9 to 11) of normal. surrounding transistors are transformer Tl , and verify element(s), bad. that 01 and Q2 are including Tl switching (see Figure 5-12 ).
  • Page 230 Troubleshooting Table 5-3. Power Supply Board Unit Component &pair (continued) Problem Symptom Checkpoint Voltage is not Switching Observe the switching Replace Q4 or output correctly. normal. the surrounding transistor Q4 is waveforms of Q4’s collector. element(s). bad. (See Figure 5-13 ). Verify that Q6 is not turned on when there’s no oscillation.
  • Page 231 Troubleshooting Figure 5-11. Sample Waveform for the Power Supply Board -1 5-17...
  • Page 232 Troubleshooting Sample Waneform for the Power Supply Board -2...
  • Page 233 5-19...

  • Page 234: Driver Board Unit Component Repair

    Driver Board Unit Component Repair Table 5-4. Driver Board Unit Component Repair Problem Symptom Checkpoint Solution Check the An error is Carriage error is The home Verify that connectors CN4 connector pins detected. detected. position cannot and CN5 are properly connected.
  • Page 235 Troubleshooting Table 5-4. Driver Board Unit Component Repair (continued) Solutlon Problem Checkpoint Symptom Cause Printing is not Observe the output Replace the The print head The print head waveforms of the driver driver IC(s). normal. is not controlled driver is bad. correctly.
  • Page 236 Troubleshooting The CR motor drive waveform (pins 30 and 31 of connector CN6) is shown in Figure 5-14. Figure 5-14. Sample Waveform for the Drtver Board -1 5-22...
  • Page 237 Figure 5-15. Sample Waveform for the Driver Board -2 DFX-8000 5-23...
  • Page 238 Troubleshooting Figure 5-16. Sample Waveform for the Driver Board 3 5-24...

  • Page 239: Main Board Unit Component Repair

    Main Board Unit Component Repair Table 5-5. Main Board Unit Component Repair Solution Cause Symptom Checkpoint Replace any Turn the printer on and t doesn’t The reset signal The reset circuit check that pin 21 of IC (5E) abnormal is not canceled. is bad.
  • Page 240 Table 5-5. Main Board Unit Component Repair (continued) Problem Symptom Solution Checkpoint An error is Short-circuited The detecting Replace IC (6A). Check the Replace IC (6A) detected. fan transistor. route of the HF ANA and HF or IC (5E). circuit is bad. ANB signals.
  • Page 241 Troubleshooting Problem Solution Symptom Checkpoint Host computer The interface Observe the interface signal A data Replace the cannot make it communication elements are bad. causing the error while parallel port IC operate communicating with the host (6A or 2E). error is detected properly.
  • Page 242 5-l 7. Sample Waveform for the Main Board -1 5-28 DFX-8000...
  • Page 243 Troubleshooting 5-28...
  • Page 244 The PF motor control signal waveform (IC (SE) pin 26) is shown in Figure 5-19. 5-19. Sample Waveform for the Main Board - 3 ..
  • Page 245 Maintenance Preventive Maintenance ..............Lubrication and Adhesive Application ..........List of Figures Correct Adhesive Application ........6-2 Figure 6-1 DFX-8000 Lubrication and Adhesive Diagram..6-5 Figure 6-2 List of Tables Lubricants and Adhesive .......... Table 6-1 Lubrication Points ............ Table 6-2 Adhesive Application Points ........

  • Page 246: Chapter 6 Maintenance

    Maintenance Preventive Maintenance Lubrication and Adhesive Application Table 6-1. Lubricants and Adhesive Description Capacity Availabilty 40CC Grease Adhesive Neji Lock #2(G) 1 ooog 8730200200 Note: Epson = Epson-exclushre product...

  • Page 247: Table 1-14 Table

    Maintenance Figure 6-I. Correct Adhesive Application 6-2. Lubrication Points Table Reference Figure No. Lubrication Points A-15 Oil pad ring of the carriage (in the both sides left and right sides of carriage) A-15 Oil pad of the carriage (under the head cable holder of carriage) A-15 Hooking points of the paper guide support...
  • Page 248 A-16 Platen gap motor pinion A-15 Carriage guide shaft gear A-15 Ribbon feed gears A-15 Tractor select cam A-16 Platen gap adjust middle gear Note: See Figure 6-2 in this chapter and Figures A-15 and A-16 in the Appendix. DFX-8000...
  • Page 249 Platen gap motor fixing screws (2 screws) A-16 Platen gap motor fixing screws (2 screws) A-16 Pull tractor sensor fixing screw (screw body side) A-16 External fan unit fixing screws (3 screws) Note: See Figures A-15 and A-16 in the Appendix. DFX-8000...
  • Page 250 Maintenance...
  • Page 251 DFX-8000...

  • Page 252: Figure 1-40 Control Panel

    C030DRV Board Circuit Diagram ......A-32 Figure A-9 C030MAIN Board Circuit Diagram......A-33 Figure A-10 DFX-8000 Exploded Diagram . 1 ......A-34 Figure A-11 DFX-8000 Exploded Diagram . 2 ......A-35 Figure A-12 DFX-8000 Exploded Diagram . 3 ......A-36 Figure A-13 DFX-8000 External Dimension Diagram..

  • Page 253: Table 1-23 Table

    BOPS CN1 Pin Assignments ........A-18 Table A-16 BOPS CN4 Pin Assignments ........A-18 Table A-17 BOPS CN5 Pin Assignments ........A-18 Table A-18 Terminal Board Connector Pin Assignments..A-20 Table A-19 Head Board Connector Pin Assignments....A-23 Table A-20 A-ii DFX-8000...

  • Page 254: Component Connections

    Technical Specifications Component Connections A C I N P U T 12OVAC. 220/240VAC POWER SUPPLY POWER SUPPLY DFX-8000...
  • Page 255 Printer mechanism control signal input Printer mechanism sensor signal output Driver circuit monitor signal output Printer mechanism sensor signal input A-13 Print head drive signal output A-14 Printer mechanism sensor signal input Printer mechanism drive signal output A-15 interlock switch connect DFX-8000...
  • Page 256 Technical Specifications Component Connector Number Table Name Number of Pins Description AC input BOPS DC output (+ 35 VDC) DC output (+ 35 VDC) A-17 DC output (+ 5 VDC, 12 VAC) Power supply control signal input/ monitor signal output A-18 Fan drive DC output (+ 35 VDC) Table A-2.
  • Page 257 Technical Specifications Table A-2. CmW CN2 Pin Assignments (continued) Description Data input 3 Data input 2 + 24 VDC Data input 1 + 12 VDC Not connected Select in signal Ground Transmission data I GND Ground DFX-8000...
  • Page 258 Paper feed motor B phase Paper feed motor C phase PF D Paper feed motor D phase PF H/R Paper feed motor drive current switch signal PS B Platen gap motor C phase PS D Platen gap motor D phase DFX-8000...
  • Page 259 Print head left line NPN drive signal #8 Print head left line NPN drive signal #9 Print head right line NPN drive signal #l Print head right line NPN drive signal #2 Print head right line NPN drive signal #3 DFX-8000...
  • Page 260 Technical Specifications Table A4 CWW CN5 Pin Assignmmts (continued) Description Number i/O Name Print head right line NPN drive signal #4 Print head right line NPN drive signal #5 Print head right line NPN drive signal #6 Print head right line NPN drive signal #7 Print head right line NPN drive signal #8 Print head right line NPN drive signal #9 HF ANA...
  • Page 261 HNERR Head driver (NPN) short/open signal HPERR Head driver (PNP) short/open signal DV35 Note: These pin assignments correspond to the connector CN4 pins on the driver board (C030DRV). The I/0 direction, In or Out, reverses on the driver board. DFX-8000...
  • Page 262 Technical Specifiiations Table Ad. Cll3OW CN7Fin Assignments Number i/O Name Description ENC A Carriage encoder A phase output ENC B Carriage encoder B phase output MTR TMP Carriage motor temperature monitor line Table A-7. WiXMAlN CN8 pin Assignments Buzzer drive signal Paper end LED drive signal Ready LED drive signal Front tractor paper end LED drive signal...
  • Page 263 MFB SW Micro feed (backward) button Description Number I/O Name Cover open sensor signal COVER SW Ground Number 1 i/O Description I Cutter direction signal Cutter install signal I in I Cutter home position sensor signal I CUTHP DFX-8000 A-10...
  • Page 264 Technical Specifications Number Name Description Ground for VP1 Ground for VP2 Note: These pin assignments correspond to the connector CN2 pins on the power supply board (BOPS). Table A-11. CO3ODRV CN2 Pin Assignments Name Description Ground for VP3 Note: These pin assignments correspond to the connector CN3 pins on the power supply board (BOPS).
  • Page 265 Technical Specifications Table A-12. CMODRV CN3 Pin Assignments Number I/O Name Description Ribbon motor A phase Ribbon motor B phase Ribbon motor C phase Ribbon motor D phase Ribbon motor common voltage (Hold/Run) Paper feed motor A phase Paper feed motor B phase Paper feed motor C phase Paper feed motor D phase Paper feed motor drive current switch signal...
  • Page 266 Technical Specifications Number 110 Name Descrlptlon Print head right line PNP drive signal #4 Print head rigM line PNP drive signal #5 Print head rigM line PNP drive signal #6 Print head rigM line PNP drive signal #7 Print head rigM line PNP drive signal #8 Print head rigM line PNP drive signal $8 Print head left line NPN drive signal #l Print head left line NPN drive signal #2...
  • Page 267 Technical Specifications Table A-13. C&WDRV CN5 Pin Assignments Number Name Description Print head drive signal #6 (HR3P) Print head drive signal #4 (HR2P) Print head ground signal #I8 (HRSN) # 4GND Print head ground signal #4 (HR2N) Print head drive signal #I4 (HR7P) Print head ground signal #I4 (HR7N) Print head drive signal #I8 (HFt9P) Print head ground signal #6 (HR3N)
  • Page 268 Technical Specifications Table A-13. CO3ODRV CN5 Pin Assignments (continued) Print head ground sqna A-15...
  • Page 269 Technical Specifications N u m b e r i/O Name Description Ground Paper width sensor signal Ground Not connected Note: These pin assignments correspond to the connector pins on the head board shown in Figure A3 and Table A-20. Table A-14. CU3ODRV CN6 Pin Assignments Name Description Number i/O...
  • Page 270 Technical Specifiitions Table A-14. CMDRV CN6 Pin Assignments (continued) PLGN Plunger NPN drive signal Paper feed motor D phase Carriage motor common line A Carriage motor common line B PFCOM Paper-feed motor common line Carriage motor common line B PFCOM Paper feed motor common line Note: These pin assignments correspond to the connector pins on the terminal board shown in Figure A-2 and Table A-19.
  • Page 271 Table A-17. BOPS CN4 Pin Assiflm.ents Description Number i/O Name I Switch off signal Power down signal Limit signal Not connect -12V + 12 VDC Logic ground Table A-18. BOPS CN5 Pin Assignments Number i/O Name Description drive voltage DFX-8000 A-18...

  • Page 272: The Terminal Board

    Technical Specifications The Terminal Board ....DFX-8000 A-19...
  • Page 273 Ribbon motor B phase Ribbon motor A phase Ribbon motor D phase Ribbon motor C phase Ribbon motor common RFCOM Ribbon motor common RFCOM TRCTSEL Tractor select sensor signal Ground Carriage motor common line A Carriage motor common line B A-20 DFX-8000...
  • Page 274 Technical Specifications Table A-19. Terminal Board Connector Pin Assignments (continued) Connector Number Description Location Name (See Figure A-2) Paper feed motor common line PFCOM Paper feed motor common line PFCOM Paper feed motor D phase Paper feed motor C phase Paper feed motor B phase Paper feed motor A phase Ribbon motor common voltage...

  • Page 275: The Head Board

    Technical Specifications The Head Board A-22...
  • Page 276 Technical Specifications Table A-20. Head Board Connector Fin Assignments Connector Location Number Name Description (See Figure A-3) CRHP Carriage home position signal Ground Print head drive signal #2 (HRI P) Print head drive signal #l (HLlP) HFANB Print head cooling fan motor B phase # IGND Print head ground signal #I (HLI N) FANCOM...
  • Page 277 Technical Specifications Table A-W. Head Board Connector Pin Assignm.ents (continued) Connector Location Number Name Description (See Figure A-3) Print head drive signal #8 (HR3P) Print head drive signal #4 (HR2P) Print head ground signal #18 (HRSN) # 4GND Print head ground signal #4 (HR2N) Print head drive signal #14 (HR7P) Print head ground signal #14 (HR7N) Print head drive signal #I8 (HRSP)

  • Page 278: Circuit Diagrams, Schematics, And Lubrication And Adhesive Diagrams

    Technical Specifications Circuit Diagrams, Schematics, and Lubrication and Adhesive Diagrams A-25...
  • Page 280 Technical Specifications DFX-8000 A-27...
  • Page 281 Technical Specifications A-28...
  • Page 282 Technical Specifications TEAR OFF SW MICRO(B) SW PAPER SEL SW Cl : LED 1 ( TEAR OFF LP T . O . F . L P FRONT 1 LP CN 1 Control Panel Board Circuit Diagra.m A-29...
  • Page 283 Technical Specifiitions A-30...
  • Page 284 Technical Specifications l 35v [VP11 A-31...
  • Page 285 --- --^ Figure A& CWODRV Board Circuit Diagram A-32...
  • Page 286 Technical Specifications Figure A-10. CO3OIUAtNBo~d Circuit Diugmm...
  • Page 287 Technical Specifications Figure A-11. Dl?X4XKM Exploded Diugram - 1 A-34...
  • Page 288 Technical SpecificatiinS i ’ Figure A-12. DKQ?#NM Explo&d Dt5zgra.m - 2...
  • Page 289 Technical Speciiiins , 6 2 0 5 0 3 Figure A-13. DI?X4XXM Exploded Diagrm - 3 A-36...
  • Page 290 Technical Specifiiins 10.24” (256 mm) 14.84” (371 mm) 10.26” (256.5 mm) A-37...
  • Page 291 19 l Adhesive Diagram - A-38...
  • Page 292 Technical Speciiiatiins...

Table of Contents