Epson Stylus COLOR 670 Service Manual
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Epson Stylus COLOR 670 Service Manual

Epson Stylus COLOR 670 Service Manual

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SERVICE MANUAL

Color Inkjet Printer
EPSON EPSON Stylus COLOR 670
®
SEIJ99016

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  • Page 1: Service Manual

    SERVICE MANUAL Color Inkjet Printer EPSON EPSON Stylus COLOR 670 ® SEIJ99016...
  • Page 2 SEIKO EPSON CORPORATION. o All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
  • Page 3 2. MAKE CERTAIN THAT THE SOURCE VOLTAGES 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 AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

  • Page 4: About This Manual

    About This Manual This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON EPSON Stylus COLOR 670. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.

  • Page 5: Symbols Used In This Manual

    Symbols Used in This Manual Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read WARNING, CAUTION or NOTE messages. Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.
  • Page 6 Revision Status Revision Issued Date Description Rev. A January 27, 2000 First Release...

  • Page 7: Table Of Contents

    EPSON Stylus COLOR 670 Revision A Contents Product Description Miscellanea .................... 20 Receive Data Buffer Full Operation ............ 20 Interface Selection ................20 Overview ..................... 11 Automatic selection .................20 Features ....................11 Interface state and interface selection ..........20 Basic Specifications .................. 12 IEEE 1284.4 protocol .................
  • Page 8 EPSON Stylus COLOR 670 Revision A Operating Principles Disassembly and Assembly Overview ..................... 31 Overview ....................67 Printer Mechanism ................. 31 Precautions .................... 68 Printhead ....................33 Tools ...................... 69 Printing Process ................. 34 Work Completion Check ................ 70 Printing Method .................. 35 Disassembly ....................
  • Page 9 EPSON Stylus COLOR 670 Revision A Adjustment Maintenance Overview ....................100 Overview ....................123 Required Adjustments ................100 Cleaning ....................123 Service Maintenance ................124 Adjustment ....................101 Lubrication .................... 125 PG Adjustment ..................101 Using the Adjustment Program .............. 103 Appendix Adjustment Program Installation Procedure .........

  • Page 10: Product Description

    C H A P T E R PRODUCT DESCRIPTION...

  • Page 11: Overview

    EPSON Stylus Color 670 Revision A 1.1 Overview The EPSON Stylus COLOR 670 is a color ink jet printer based on the EPSON Stylus COLOR 660. 1.1.1 Features Major features of EPSON Stylus COLOR 670 are as follows; High color print quality...

  • Page 12: Basic Specifications

    EPSON Stylus Color 670 Revision A 1.2 Basic Specifications CONTROL CODE o ESC/P Raster command 1.2.1 Printing Specifications EPSON Remote command PRINTING METHOD CHARACTER TABLES On demand ink jet o 2 international character sets NOZZLE CONFIGURATION PC437 (US, Standard Europe)

  • Page 13: Electric Specification

    EPSON Stylus Color 670 Revision A 1.2.4 Electric Specification 1.2.5 Environmental Conditions 120 V Version TEMPERATURE Rated voltage: AC 100V Operating: 10 to 35 C (see Figure 1-2, "Environmental Input voltage range: AC 99 -132V Condition") Rated frequency range: 50 - 60Hz...

  • Page 14: Resistance To Shock

    EPSON Stylus Color 670 Revision A 1.2.8 Acoustic noise RESISTANCE TO SHOCK Level: Approx. 47 dB (A) Operating: 1 G, within 1ms (operating) (According to ISO 7779) Non-operating: 2 G, within 2 ms (with shipment container) CE marking 220 - 240 V version...

  • Page 15: Interface

    EPSON Stylus Color 670 Revision A 1.3 Interface The figure below shows the timing chart of the parallel interface. 1.3.1 Hardware interface This printer provides USB and parallel interface as standard. 1.3.1.1 Parallel interface Transmission mode: 8-bit parallel, IEEE-1284 compatibility...
  • Page 16 EPSON Stylus Color 670 Revision A Table 1-5. Connector Pin Assignment and Signals (F-Channel) Table 1-4. Signal Level: TTL compatible (IEEE-1284 level 1 device) Signal Return Parameter Minimum Maximum Condition In/Out Function Description Name GND Pin VOH* 5.5V DATA1 VOL* -0.5V...

  • Page 17: Ieee-1284 Parallel I/F (Reverse Channel)

    EPSON Stylus Color 670 Revision A 1.3.2 IEEE-1284 Parallel I/F (Reverse Channel) Table 1-5. Connector Pin Assignment and Signals (F-Channel) Signal Return Reverse channel is used to transfer the information data from the printer In/Out Function Description Name GND Pin side to the PC side.
  • Page 18 EPSON Stylus Color 670 Revision A Table 1-7. Connector Pin Assignment and Signals (F-Channel) Table 1-7. Connector Pin Assignment and Signals (F-Channel) Return Return Signal Name In/Out Functional Description Signal Name In/Out Functional Description GND Pin GND Pin Chassis Printer chassis GND.

  • Page 19: Usb (Universal Serious Bus)

    EPSON Stylus Color 670 Revision A 1.3.3 USB (Universal Serious Bus) Following shows specification. Standard: Universal Serial Bus Specifications Revision 1.0 Universal Serial Bus Device Class Definition for Printing Devices version 1.0 Bit rate: 12Mbps (Full Speed Device) Data encoding:...

  • Page 20: Miscellanea

    EPSON Stylus Color 670 Revision A 1.3.4 Miscellanea 1.3.4.3 IEEE 1284.4 protocol The packet protocol described by IEEE1284. 4 standard allows a device to 1.3.4.1 Receive Data Buffer Full Operation carry on multiple exchanges or conversations which contain data and / or...

  • Page 21: Printer Language And Emulation

    EPSON Stylus Color 670 Revision A 1.3.5 Printer Language and Emulation Printing mode: Printing mode ESC(K Color: Printing color ESC r, ESC(r Printer language: ESC/P Raster EPSON Remote 1.3.5.1 Control codes CHARACTER MODE General Operation: Initialize Printer ESC@ Paper feeding:...

  • Page 22: Operator Controls

    EPSON Stylus Color 670 Revision A 1.4 Operator Controls 1.4.4 Panel Functions Table 1-9. Panel Functions 1.4.1 Operate Switch Switch Function Operate switch is located on the control panel. • Loads or Ejects the paper. Load / Eject • When the carriage is on the ink cartridge change 1.4.2 Control Panel...

  • Page 23: Printer Condition And Panel Status

    EPSON Stylus Color 670 Revision A 1.4.6 Printer Initialization Table 1-11. Special Setting Mode There are three kinds of initialization method. Switch Function • Initialize EEPROM and reset timer IC. Power-on initialization Load / Eject This printer is initialized when turning the printer power on, or printer •...

  • Page 24: Errors

    EPSON Stylus Color 670 Revision A 1.4.7 Errors 1.4.8 Paper Handling Ink End Do not perform reverse feed more than 9.5mm (0.38”). When the printer runs out the most parts of the ink of any one color, it warns ink-low and keeps printing. When the printer runs out the 1.4.9 Paper Specification...
  • Page 25 EPSON Stylus Color 670 Revision A Envelope Size: No.10 (241.3 mm x 104.8 mm)(9.5 x 4.125”) DL (220 mm x 110 mm)(8.7 x 4.3”) C6 (162 mm x 114 mm)(6.4 x 4.5”) Paper Type/Weight/Flap Thickness: 0.16mm to 0.52mm(0.006 to 0.02”)

  • Page 26: Printable Area

    EPSON Stylus Color 670 Revision A 1.4.10 Printable Area Table 1-13. Margins in Character Mode Paper Size Left Margin Right Margin Top Margin Bottom Margin 1.4.10.1 Cut Sheet 3mm (0.12”) 3mm (0.12”) 3mm (0.12”) 14mm (0.54”) Letter 3mm (0.12”) 9mm (0.35”) 3mm (0.12”)

  • Page 27: Envelope

    EPSON Stylus Color 670 Revision A 1.4.10.2 Envelope Printable Area Printable Area Figure 1-6. Printable Area for Envelopes Table 1-15. Envelope Margin Left Margin Right Margin Top Margin Bottom Margin Size (minimum) (minimum) (minimum) (minimum) 3 mm (0.12”) 28 mm (1.10”) 3 mm (0.12”)

  • Page 28: Ink Cartridge

    EPSON Stylus Color 670 Revision A 1.4.11 Ink Cartridge COLOR INK CARTRIDGE Type: Exclusive cartridge BLACK INK CARTRIDGE Color: Magenta, Cyan, Yellow Type: Exclusive cartridge Print capacity: 300 pages/A4 (360 dpi, 5% duty each color) Color: Black Ink life: 2 years from production date...

  • Page 29: Physical Specification

    429 x 261 x 167 mm (WxDxH) (Storage) Black ink cartridge: 429 x 613 x 295 mm (WxDxH) (Printing) Color ink cartridge: Power cord: 1 (220-240 version only) 613mm 429mm Figure 1-9. EPSON Stylus COLOR 670 Dimensions Product Description Physical Specification...

  • Page 30: Operating Principles

    C H A P T E R OPERATING PRINCIPLES...

  • Page 31: Overview

    Paper feeding mechanism 2.1.1 Printer Mechanism enabled 3mm enabled Pump unit EPSON Stylus COLOR 670 is based on Stylus COLOR 660 and the basic specifications for its mechanism are almost same as Stylus COLOR 660. Capping unit Valve type Valve less type...
  • Page 32 EPSON Stylus COLOR 670 Revision A Paper Loading Mechanism CR Unit CR Mechanism (Printhead) CR Motor Paper Feed Capping Trigger Lever Position Position Ink System PF Motor Paper Feeding Mechanism Mechanism CR Lock Mechanism Pump Mechanism Figure 2-1. Printer Mechanism Block Diagram...

  • Page 33: Printhead

    PZT (Piezo Electric Element). In order to uniform the amount of ejecting ink, each printhead has its own head ID (10 figures for EPSON Stylus COLOR 670) Filter which adjust PZT voltage drive features. The printhead stores the head ID to...

  • Page 34: Printing Process

    EPSON Stylus COLOR 670 Revision A 2.1.2.1 Printing Process Ink Path Ink Cavity This section explains the process in which the printheads of On-Demand inkjet printers eject ink from each nozzle. 1. Normal State: When no printing signal is sent from PC, or no PZT drive voltage is applied, PZT does not change shape, therefore PZT does not squeeze the cavity.

  • Page 35: Printing Method

    EPSON Stylus COLOR 670 Revision A 2.1.2.2 Printing Method For print dot system, EPSON Stylus COLOR 670 has the following two types of printing modes. Multiple shot printing Variable dot printing The above two printing modes are automatically selected depending on the media and the resolution setting.

  • Page 36: Carriage Mechanism

    EPSON Stylus COLOR 670 Revision A 2.1.3 Carriage Mechanism 2.1.3.1 Platen Gap (PG) Adjustment Mechanism The PG adjustment mechanism is designed to keep the platen gap correct for The carriage mechanism consists of carriage motor (CR motor), carriage unit the paper thickness to prevent ink from smearing.

  • Page 37: Paper Feeding Mechanism

    Combination gear (6, 34.4) Spur gear (36) Paper eject roller EPSON Stylus COLOR 670 allows printing up to the last 3mm like EPSON Stylus Photo 720 / EPSON Stylus Photo EX3. The star-wheel roller assembly Spur Gear 36 Spur Gear 67.2 has been shifted 5 degrees from directly on the top of the eject roller towards Spur Gear26.4...

  • Page 38: Paper Loading Mechanism (Asf Unit)

    EPSON Stylus COLOR 670 Revision A 2.1.5 Paper Loading Mechanism (ASF Unit) When the PF motor torque is switched to the ASF unit side by the disengage mechanism, the function of the ASF mechanism varies depending on the The paper loading mechanism is positioned at the printer rear and consists of rotational direction of the PF motor, as shown in the table below.
  • Page 39 EPSON Stylus COLOR 670 Revision A Torque sent from the ASF/Pump motor to the ASF unit via the disengage 1. When the printer is powered on, the CR unit moves to the DE lever mechanism. ASF paper loading sequence is described below.

  • Page 40: Ink System Mechanism

    EPSON Stylus COLOR 670 Revision A 2.1.6 Ink System Mechanism Figure 2-9 shows the operating principles of the pump mechanism. Ink system mechanism consists of Pump unit (including CR lock mechanism) and Capping mechanism. Counterclockwise Clockwise Ink system mechanism drives the Pump unit that presses cap to the Printhead and ejects ink from Ink cartridge, Head cavity and Cap to the Waste ink pad.

  • Page 41: Capping Mechanism

    EPSON Stylus COLOR 670 Revision A 2.1.7 Capping Mechanism Stylus COLOR 660 has built-in air valves in the capping unit but Stylus COLOR 670 uses valveless system. The Capping mechanism covers the Printheads with the cap holder to prevent Air valve function used for the previous models pumps and ejects ink only the ink around the nozzles from increasing viscosity when the printer is in inside the cap by sucking ink with the valve open.

  • Page 42: Ink Sequence

    EPSON Stylus COLOR 670 Revision A 2.1.8 Ink Sequence - Ink absorption (Black Ink: 0.47ml, Color Ink: 0.73ml) Initial ink charge After the product is purchased and the printer is turned on for the first -Wiping operation (Wipes nozzle plate by the rubber part on the right time, the printer performs the initial ink charge and charges ink inside half of the wiper.)

  • Page 43: Electrical Circuit Operating Principles

    EPSON Stylus COLOR 670 Revision A 2.2 Electrical Circuit Operating Principles 2.2.1 C301PSB/PSE Board The power supply boards of Stylus COLOR 670 use a RCC (Ringing Chalk The electric circuit of the Stylus COLOR 670 consists of the following boards.
  • Page 44 EPSON Stylus COLOR 670 Revision A +5V line constant voltage control circuit: The output level of the +5VDC line voltage is monitored by the regulator IC51. If abnormal voltage is detected, the information is fed back to the internal comparator.

  • Page 45: C301Main Board

    EPSON Stylus COLOR 670 Revision A 2.2.2 C301MAIN Board See Figure 2-13 for the C301MAIN board block diagram. The printer mechanism is controlled by C301MAIN. The 3.3V regulator IC 16 is mounted on the MAIN board and generates +3.3V from 5V. +3.3V is to drive the main elements on the logic circuit.

  • Page 46: Main Elements

    EPSON Stylus COLOR 670 Revision A 2.2.2.1 Main elements Table 2-8 shows the main elements on C301MAIN. Table 2-8. Main Elements Location Function 16bit CPU mounted on the MAIN board is driven IC1 (3.3V) by clock frequency 24MHz and controls the HD64F/2328F printer.

  • Page 47: Printhead Driver Circuit

    EPSON Stylus COLOR 670 Revision A 2.2.2.2 Printhead Driver Circuit Printhead Driver CircuitHead common driver circuit The reference head drive waveform is produced in the common driver The printhead driver circuit consists of the following two components: (IC15) based on the following 12 signal lines output from the ASIC (IC2);...

  • Page 48: Pf Motor (Pf/ Pump/ Asf Motor) Driver Circuit

    EPSON Stylus COLOR 670 Revision A 2.2.2.3 PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit The motor driver IC (IC14) on C301MAIN drives PF/ PUMP/ ASF motor. Stylus COLOR 670 uses 4-phase 48-pole hybrid type stepping motor and performs constant current bi-polar drive.

  • Page 49: Cr Motor Driver Circuit

    EPSON Stylus COLOR 670 Revision A 2.2.2.4 CR Motor Driver Circuit 2.2.2.5 Reset Circuit Motor driver IC (IC13) on C301MAIN board drives CR motor. Reset circuits consist of reset/ timer IC (IC5) and peripheral elements. Reset circuits are attached on the C301MAIN board to monitor the two voltages: +5V Stylus COLOR 670 uses 4-phase 200-pole hybrid type stepping motor and for the logic line and +42V for the drive line.

  • Page 50: Eeprom Control Circuit

    EPSON Stylus COLOR 670 Revision A 2.2.2.6 EEPROM Control Circuit EEPROM is connected to ASIC with 4 lines and each line has the following function. Since EEPROM is nonvolatile memory, it keeps written information if the Chip selection signal printer power is turned off. When the printer is turned ON, ASIC reads data...

  • Page 51: Sensor Circuit

    EPSON Stylus COLOR 670 Revision A 2.2.2.7 Sensor Circuit Black/ Color cartridge sensor (COB/ COC) Cartridge sensor uses mechanical method. This sensor detects C301MAIN is equipped with the following five sensors to detect the status of whether a black or color ink cartridge is installed in the CR unit. When the printer.

  • Page 52: Troubleshooting

    C H A P T E R TROUBLESHOOTING...

  • Page 53: Overview

    EPSON Stylus COLOR 670 Revision A 3.1 Overview Table 3-2. Sensor Specifications Sensor Name Check Point Signal Level Switch Mode This chapter describes how to identify troubles in two levels: unit level repair and component level repair. Refer to the flowchart in this chapter to identify Open (Out of HP Less than 0.7V...

  • Page 54: Unit Level Troubleshooting

    EPSON Stylus COLOR 670 Revision A 3.2 Unit Level Troubleshooting Table 3-3. LED Indicators LED Indication You can identify the troubles, using flowcharts in this section and then find Condition Remedy Paper Ink End Ink End defective unit. When you find out defective unit, refer to “Unit Repair (Printer...

  • Page 55: Printer Does Not Operate At Power On

    EPSON Stylus COLOR 670 Revision A 3.2.1 Printer does not operate at power on 3.2.2 Error is detected Start Start Check the LCD error message. AC voltage Use the correct AC = OK? voltage. Is the Turn off the printer...

  • Page 56: Failure Occurs During Printing

    EPSON Stylus COLOR 670 Revision A 3.2.3 Failure occurs during printing 3.2.4 Printer does not feed paper correctly Start START Print a self test. Paper loaded correctly in ASF? Did it print properly? Set the paper correctly. MAIN board cables...

  • Page 57: Control Panel Operation Is Abnormal

    EPSON Stylus COLOR 670 Revision A 3.2.5 Control panel operation is abnormal 3.3 Unit Repair (Power Supply Board) This section provides in-depth information for repairing the power supply START board so that you can repair the board to the small parts level. The table...

  • Page 58: Unit Repair (Control Board)

    EPSON Stylus COLOR 670 Revision A 3.4 Unit Repair (Control Board) Table 3-5. PSB Troubleshooting (continued) Symptom Condition Cause Check point Solution This section provides in-depth information for repairing C301MAIN board so Check the output waveform that you can repair the board to the small parts level. The table below lists the (pin 8).
  • Page 59 EPSON Stylus COLOR 670 Revision A Table 3-6. Control Board Troubleshooting (continued) Symptom Condition Cause Check point Solution Check the PHASE (Pin 16 and 27) of IC13 and signal waveform of OUT (Pin 7,6,9,8). If PHASE- IC2 is DATA is broken.
  • Page 60 EPSON Stylus COLOR 670 Revision A Table 3-6. Control Board Troubleshooting (continued) Table 3-6. Control Board Troubleshooting (continued) Symptom Condition Cause Check point Solution Symptom Condition Cause Check point Solution Check the PHASE (Pin Check the signal 16,27) of IC 14, and...

  • Page 61: Unit Repair (Printer Mechanism)

    EPSON Stylus COLOR 670 Revision A 3.5 Unit Repair (Printer Mechanism) Table 3-7. Printer Mechanism Troubleshooting (continued) Symptom Condition Cause Check Point Solution This section provides in-depth information for repairing the printer -Does panel LED mechanism so that you can repair the printer mechanism to the small parts indicate fatal level.
  • Page 62 EPSON Stylus COLOR 670 Revision A Table 3-7. Printer Mechanism Troubleshooting (continued) Table 3-7. Printer Mechanism Troubleshooting (continued) Symptom Condition Cause Check Point Solution Symptom Condition Cause Check Point Solution -Check if the Check visually if drive of PF motor...
  • Page 63 EPSON Stylus COLOR 670 Revision A Table 3-7. Printer Mechanism Troubleshooting (continued) Table 3-7. Printer Mechanism Troubleshooting (continued) Symptom Condition Cause Check Point Solution Symptom Condition Cause Check Point Solution Check the Perform cleaning Printhead Printhead printing quality several times...
  • Page 64 EPSON Stylus COLOR 670 Revision A Table 3-7. Printer Mechanism Troubleshooting (continued) Table 3-7. Printer Mechanism Troubleshooting (continued) Symptom Condition Cause Check Point Solution Symptom Condition Cause Check Point Solution Bi-directional Refer to Clean the LD A vertical line is...
  • Page 65 EPSON Stylus COLOR 670 Revision A Table 3-7. Printer Mechanism Troubleshooting (continued) Symptom Condition Cause Check Point Solution Check the signal ASF sensor is Replace ASF level of the ASF defective. sensor. sensor. Check the signal HP sensor is Replace HP level of the HP defective.

  • Page 66: Disassembly And Assembly

    C H A P T E R DISASSEMBLY AND ASSEMBLY...

  • Page 67: Overview

    4.1 Overview This section describes procedures for disassembling the main components of EPSON Stylus COLOR 670. Unless otherwise specified, disassembly units or components can be reassembled by reversing the disassembly procedure. Things, if not strictly observed, could result in injury or loss of life are described under the heading “Warning”.

  • Page 68: Precautions

    EPSON Stylus COLOR 670 Revision A 4.1.1 Precautions Risque d’explosion si la pile est remplacée incorrectment. A lithium battery is installed on the MAIN Board of this printer for backing up Ne remplacer que par une pile du même type ou d’un type the system clock.

  • Page 69: Tools

    EPSON Stylus COLOR 670 Revision A 4.1.2 Tools Use only specified tools to avoid damaging the printer. Table 4-1. Required Tools Name Supplier Parts No. Phillips Screw Driver EPSON B743800100 (No.1) Phillips Screw Driver EPSON B743800200 (No.2) Nipper EPSON B740500100...

  • Page 70: Work Completion Check

    EPSON Stylus COLOR 670 Revision A 4.1.3 Work Completion Check Table 4-2. Check List (continued) Classifi- If any service is made to the printer, use the checklist shown below to confirm Item Check Point Status cation all works are completed properly and the printer is ready to be returned to the Checked user.

  • Page 71: Disassembly

    EPSON Stylus COLOR 670 Revision A 4.2 Disassembly The flowchart below shows step-by-step disassembly procedures. When disassembling each unit, refer to the page number shown in the figure. Housing Removal Page 72 Control Panel ASF Assy. Circuit Board Assy. Removal...

  • Page 72: Housing Removal

    EPSON Stylus COLOR 670 Revision A 4.2.1 Housing Removal Since this printer has no lower Housing, the Printer Mechanism is exposed just by removing the Housing. 1. Open the Printer Cover and set the PG Adjust Lever to (+) position.

  • Page 73: Circuit Board Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.2 Circuit Board Assembly Removal 6. When removing each board unit from M/B Shield Plate, remove screws securing each board (C301MAIN Board: 10 screws, C301PSB/PSE: 4 1. Remove the Housing. (“Housing Removal” on page 72) screws) and remove the boards respectively.
  • Page 74 EPSON Stylus COLOR 670 Revision A After replacing C301MAIN Board, perform the following adjustments. Head ID Input (See “Head ID Input” on page 107) Bi-D Adjustment (See “Bi-D Adjustment” on page 112) USB ID Input (See “USB ID Input” on page 115) When the MAIN Board is replaced, the value of Ink Cartridge Consumption Counter and the Waste Pad Counter is reset.

  • Page 75: Control Panel Removal

    EPSON Stylus COLOR 670 Revision A 4.2.3 Control Panel Removal Panel Shield Plate 1. Remove the Housing. (See“Housing Removal” on page 72) Panel Board Assembly 2. Remove 2 screws securing the Control Panel, then remove the Control Panel Board Assy Securing Screw Panel from the Printer Mechanism.

  • Page 76: Ink Absorber Tray Assembly (Waste Ink Pad) Removal

    EPSON Stylus COLOR 670 Revision A 4.2.4 Ink Absorber Tray Assembly (Waste Ink Pad) Waste Ink Pad Assembly Removal Securing Screw 1. Remove the Housing.(See “Housing Removal” on page 72) 2. Remove the Control Panel. (See “Control Panel Removal” on page 75) 3.

  • Page 77: Printer Mechanism Disassembly

    EPSON Stylus COLOR 670 Revision A 4.2.5 Printer Mechanism Disassembly Printhead Head Fastener 4.2.5.1 Printhead Removal 1. Remove the Housing.(See “Housing Removal” on page 72) 2. Rotate Combination Gear, 6, 34.4 toward the front side of the printer and release the CR Lock Lever from the CR Assembly. Then, move the CR Assembly to the left side.
  • Page 78 EPSON Stylus COLOR 670 Revision A When removing the Head FFCs from the Printhead Board, do not pull two FFCs together. As shown in the figure below, one of the Head FFCs is inserted to the connector on the Head Board horizontally and if you pull this FFC upward, FFC may be broken.
  • Page 79 EPSON Stylus COLOR 670 Revision A Be sure that the Head Grounding Plate is installed to the Install a new cartridge before sending back the printer to carriage correctly. (There are 2 position marking pins on the user, since the ink cartridge once taken out can not the carriage.)

  • Page 80: Pump Assembly / Cap Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.2 Pump Assembly / Cap Assembly Removal Loosen 2 screws at the R/L Frame and lift up the Paper 1. Remove the Housing. (See “Housing Removal” on page 72) Eject Frame Assembly. 2. Remove the Control Panel. (See “Control Panel Removal” on page 75) 3.
  • Page 81 EPSON Stylus COLOR 670 Revision A Since the spring is included among the gears in the Ink Tube Routing From Pump Assembly, be careful that the parts do not pop out Cap Assembly during disassembly and assembly. (Refer to the Figure 4-12 below.)

  • Page 82: Cr Motor Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.3 CR Motor Assembly Removal 1. Remove the Housing.(See “Housing Removal” on page 72) 2. Rotate Combination Gear, 6, 34.4 toward the front of the printer and disengage the CR Lock Lever. Then, manually move the CR Assembly to the center of the platen.

  • Page 83: Pf Motor Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.4 PF Motor Assembly Removal Paper Eject Frame Securing Screws (2 screws) 1. Remove the Housing. (See “Housing Removal” on page 72) 2. Remove the Ink Absorber Tray Assembly. (See “Ink Absorber Tray Assembly (Waste Ink Pad) Removal” on page 76) 3.
  • Page 84 EPSON Stylus COLOR 670 Revision A When removing the PF Motor Assembly, first slightly pull out the PF Motor Assembly from the frame and slide the Motor Shaft to a larger cutoff of the frame and remove it. Front Paper Guide Be careful for the routing direction of the cable from the PF Motor Assembly.

  • Page 85: Asf Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.5 ASF Assembly Removal 5. Shift the ASF Assembly to the right (seen from the back side of the printer) and while lifting the Sub Paper Support, remove the ASF 1. Remove the Housing. (See “Housing Removal” on page 72) Assembly to the back side of the printer.
  • Page 86 EPSON Stylus COLOR 670 Revision A When installing the ASF Assembly, make sure that the When installing the ASF Assembly, be careful not to protrusion at the right side of ASF Assembly is firmly pinch any motor or sensor cables under the ASF.

  • Page 87: Asf Ld Roller Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.6 ASF LD Roller Assembly Removal 4. Push the LD Roller Shaft to the left and remove the ASF HP Detection Wheel from the end of the shaft. (Refer to Figure 4-27.) 1. Remove the ASF Assembly. (See “ASF Assembly Removal” on page 85) 2.
  • Page 88 EPSON Stylus COLOR 670 Revision A 5. Release the protrusion of the ASF Frame from the ASF Hopper Assembly 6. Align the right cam part of the ASF Hopper Assembly to the cutoff installation point at the upper left. (rectangle) of the ASF Frame assembly. Lift the left side of the ASF Hopper Assembly and carefully remove the ASF Hopper Assembly.
  • Page 89 EPSON Stylus COLOR 670 Revision A The following is the ASF Assembly exploded diagram. During disassembly and assembly of the ASF Hopper Assembly, do not let the grease on the cam parts touch Hopper Assembly other parts. Wipe off any grease smeared on other parts.
  • Page 90 EPSON Stylus COLOR 670 Revision A When installing the Right LD Roller Assembly to the ASF Frame, make sure the Right LD Roller Assembly is locked by the hook on the back of the right side of the ASF Frame. (Refer to Figure 4-34.) Before installing the ASF Hopper Assembly to the LD Roller Assembly, set the Compression Spring 1.961 to the...
  • Page 91 EPSON Stylus COLOR 670 Revision A Screw Fixing Hooks Compression Spring 1.961 Figure 4-35. Compression Spring 1.961 Temporary Fixing Position Disassembly and Assembly Disassembly...

  • Page 92: Ld Roller Assembly Disassembly

    EPSON Stylus COLOR 670 Revision A 4.2.5.7 LD Roller Assembly Disassembly LD Roller Cover 1. Remove the ASF Assembly. (See “ASF Assembly Removal” on page 85) (Right and Left) Compression Spring 1.961 2. Remove the LD Roller Assembly. (See “ASF LD Roller Assembly...

  • Page 93: Cr Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.8 CR Assembly Removal 5. Move the Driven Pulley Holder to the right and remove it from the frame. 6. Release 2 PG Lever securing hooks from the Right Frame and remove the 1. Remove the Housing. (See “Housing Removal” on page 72) PG Lever.
  • Page 94 EPSON Stylus COLOR 670 Revision A 9. Rotate the Right Parallelism Adjust Bushing to the front side of the printer Perform following adjustments after removing the Carriage to align the cutoff of the frame and remove it. Assembly. PG Adjustment (See “PG Adjustment” on page 101) Bi-D Adjustment (See “Bi-D Adjustment”...

  • Page 95: Pe Sensor Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.9 PE Sensor Assembly Removal 1. Remove the Housing. (See “Housing Removal” on page 72) When installing the PE Sensor Assembly, make sure that the sensor lever is correctly inserted into the hole of Paper Guide 2.

  • Page 96: Pf Roller Assembly Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.10 PF Roller Assembly Removal 1. Remove the Housing.(See “Housing Removal” on page 72) 2. Remove the ASF Assembly. (See “ASF Assembly Removal” on page 85) Paper Eject Frame Fixing Screws 3. Remove the Torsion Spring117.6 from the rear side of the Top Frame and remove the Upper Paper Guide Assembly toward the rear side of the printer.
  • Page 97 EPSON Stylus COLOR 670 Revision A 7. Release hooks securing the Left Bushing 12 to the Left Frame and rotate the Left Bushing 12 to the front side of the printer. Align the protrusion of the Left Bushing 12 and the cutoffs of the frame. Shift the bushing with PF roller to the left and remove the PF roller.

  • Page 98: Cr Hp Sensor Removal

    EPSON Stylus COLOR 670 Revision A 4.2.5.11 CR HP Sensor Removal 1. Remove the Housing. (“Housing Removal” on page 72) 2. Disconnect the cable from the CR HP Sensor and remove it by releasing its hook. CR HP Sensor Sensor Securing Hook Figure 4-50.

  • Page 99: Adjustment

    C H A P T E R ADJUSTMENT...

  • Page 100: Overview

    EPSON Stylus COLOR 670 Revision A 5.1 Overview 5.1.1 Required Adjustments Table 5-1 lists all the necessary adjustments for this printer. If any service This section describes the procedure for adjustments required when the listed in this table is carried out, all adjustments corresponding to that printer is disassembled and assembled for repair or service.

  • Page 101: Adjustment

    EPSON Stylus COLOR 670 Revision A 5.2 Adjustment 3. Move the carriage to the center and set the thickness gauge (1.14mm thick) on the flat face of the specified rib of the front paper guide as you see in the figure5-1. Perform the PG adjustment from the right (HP side) This section describes the detailed procedures of each adjustment.
  • Page 102 EPSON Stylus COLOR 670 Revision A 6. Adjust until the thickness gauge stars moving with the carriage. From the point where the thickness gauge stars moving with the carriage, move the Right Parallelism Adjust Bushing by one notch toward you. (Gap will be widen.)

  • Page 103: Using The Adjustment Program

    This adjustment program is in the 3.5 2HD FD. The first FD is the installer disk. When you execute Setup.exe, the installation of the program will be started under Windows 95/98. After installation is completed, the EPSON Stylus COLOR 670 icon will be automatically made in the program menu.

  • Page 104: Adjustment Program Initial Setting Screen

    If the problem is not solved, check the task bar tray for resident programs that may have locked up the printer port, Model name for example EPSON Scanner Monitor. Close these programs. Market Destination NOTE: This printer stores the model name in the PROM. Therefore, Follow the procedure below to input the initial settings.
  • Page 105 Options appear in this button to see section of the window. the available options. Useful information such as the stored Head ID appear in this section. Figure 5-4. EPSON Stylus COLOR 670 Service Program Main Window Adjustment Using the Adjustment Program...

  • Page 106: Check This Model Name

    EPSON Stylus COLOR 670 Revision A 5.3.4 Check This Model Name Click the “Check this model name” radio button to confirm the model name that is written in the PROM. Adjustment Using the Adjustment Program...

  • Page 107: Head Id Input

    EPSON Stylus COLOR 670 Revision A 5.3.5 Head ID Input 1. Select “Head voltage ID Input” from the Adjustment menu. The screen below appears. This program adjusts the driving characteristics of the PZT for each head to unify the amount of ejecting ink. Input the head ID determined by the measurement of PZT driving characteristics to EEPROM by this program.
  • Page 108 EPSON Stylus COLOR 670 Revision A 3. Click OK in the screen below. The current head ID stored in EEPROM 4. Click Previous to return to the Head Voltage ID Input screen. To input the appears at the bottom of the window. For adjustments requiring you to head ID, select “Change data”...

  • Page 109: Head Angular Adjustment

    EPSON Stylus COLOR 670 Revision A 5.3.6 Head Angular Adjustment 1. Select “Head angular adjustment” on the Adjustment menu. The following screen appears. During production, slight variations are created in the printhead and carriage (which is used as a printhead base). If these differences are not adjusted, they would adversely influence the printhead angle, resulting in poor print quality.
  • Page 110 EPSON Stylus COLOR 670 Revision A 4. At the head angular adjustment position, loosen the screw fixing the printhead which is located at the right side of the CR. NOTE: When loosing / tightening the head securing screw, hold the CR unit.
  • Page 111 EPSON Stylus COLOR 670 Revision A 5. Look very closely at the black/magenta lines in the printed pattern and 7. After finishing the adjustment, tighten the head screw while holding the move the adjustment lever to center the magenta lines between the black unit.

  • Page 112: Bi-D Adjustment

    EPSON Stylus COLOR 670 Revision A 5.3.7 Bi-D Adjustment 1. From the Adjustment menu, select “Bi Directional adjustment” and then select “Print the Bi-D adjustment pattern. Click OK. This adjustment is to correct differences in printing positions, which is caused by slippage of printing timing in right and left directions during the Bi-directional printing.
  • Page 113 EPSON Stylus COLOR 670 Revision A 2. Click OK in the next screen to print the patterns. 4. The following screen appears and select the kind of Bi-D adjustment that is required while refering to the printed patterns. Look at the printed pattern, shown below.
  • Page 114 EPSON Stylus COLOR 670 Revision A 5. Click OK and the following screen appears. Figure 5-18. Checking present adjustment values Figure 5-17. Bi-d Adjustment Value Input Screen 6. Enter the number of the correct adjustment pattern. If none of the patterns are correct, estimate a number based on a comparison of the current pattern and the two samples and enter that number.

  • Page 115: Usb Id Input

    5.3.8 USB ID Input When inputting the USB ID, input the data referring to the Perform this adjustment when the MAIN board is replaced. EPSON Stylus 10-digit product serial number labeled on the back of the COLOR 670 stores 18-figure USB ID unique to the machine in EEPROM on printer.

  • Page 116: To Only Check The Usb Id

    EPSON Stylus COLOR 670 Revision A TO ONLY CHECK THE USB ID To just check the USB ID without having to enter anything, select the “Check USB ID” radio button and click OK. Figure 5-21. Actual Input Screen 3. Check the serial number on the back of the printer and input the 10-digit serial number.

  • Page 117: Head Cleaning

    EPSON Stylus COLOR 670 Revision A 5.3.9 Head Cleaning This item is selected from the maintenance menu. Head cleaning is used when the dot missing is occurred to perform the head cleaning more effectively. By selecting / performing this sequence, the powerful cleaning (CL’...

  • Page 118: Initial Ink Charge

    EPSON Stylus COLOR 670 Revision A 5.3.10 Initial Ink Charge 1. From the Maintenance menu, select “Initial Ink Charge”. The following screen appears. There is no ink charged in the ink path of a spare print head and printer mechanism. Therefore, after you replace any of the following units, perform initial ink charge and return the printer to the user after making sure that ink is ejected correctly from the print head.

  • Page 119: Protection Counter Indication / Reset

    EPSON Stylus COLOR 670 Revision A 5.3.11 Protection Counter Indication / Reset This function is to check the protection counter value for the waste ink absorber and resetting the counter value. After resetting the protection counter value, replace the ink waste pad with a new one.
  • Page 120 EPSON Stylus COLOR 670 Revision A Figure 5-27. Current Counter Value Indication 7. In the screen above, click OK to clear the waste ink counter. Adjustment Using the Adjustment Program...

  • Page 121: Print A4 Check Pattern

    EPSON Stylus COLOR 670 Revision A 5.3.12 Print A4 Check Pattern This function is to check the adjustment result comprehensively on the plain paper. By performing this function, the following items are printed. 360dpi Black / Color Pattern print If there is no print blur or white lines on the print pattern, the adjustment is completed.

  • Page 122: Maintenance

    C H A P T E R MAINTENANCE...

  • Page 123: Overview

    EPSON Stylus COLOR 670 Revision A 6.1 Overview This section provides information to maintain the printer in its optimum condition. 6.1.1 Cleaning This printer has no mechanical components which require regular cleaning except the printhead. Therefore, when returning the printer to the user, check the following parts and perform appropriate cleaning if stain is noticeable.

  • Page 124: Service Maintenance

    The following is the and adjustment program. EPSON Stylus COLOR 670 has 3 modes for process to reset the Ink Counter by the control panel.

  • Page 125: Lubrication

    EPSON Stylus COLOR 670 Revision A 6.1.3 Lubrication Table 6-2. Lubrication Points (continued) Lubrication Type/Point Remarks The characteristics of the oil or grease have great affects on the mechanical function and durability, especially does the characteristics about temperature • Lubricate the contact points <Lubrication Point &...
  • Page 126 EPSON Stylus COLOR 670 Revision A Table 6-2. Lubrication Points (continued) Table 6-2. Lubrication Points (continued) Lubrication Type/Point Remarks Lubrication Type/Point Remarks • For the right bushing • Evenly apply lubrication to <Lubrication Point> <Lubrication Point> (pump assembly shaft the contact point with ASF;...
  • Page 127 EPSON Stylus COLOR 670 Revision A No.5 No.4 Combination Gear 16, 40.8 Shaft No.2 Spur Gear 23.2 Combination Gear 16.40.8 No.1 No.4 Spur Gear 67.2 No.4 Combination Gear 3, 30 No.6 Bush 12 Inside Spur Gear 34 No.3 Upper Frame No.7...
  • Page 128 EPSON Stylus COLOR 670 Revision A No.12 Driven Pulley CR Oil Pad Holder Amount of Oil: 0.7cc (Never apply more than specified.) Carriage No.8 ASF Hopper CR Guide Shaft Assembly No.10 Flags Dispenser CR Unit No.13 ASF Frame Front Side of the Printer No.9...

  • Page 129: Appendix

    C H A P T E R APPENDIX...

  • Page 130: Connector Summary

    EPSON Stylus COLOR 670 Revision A 7.1 Connector Summary Table 7-1. Connector Summary for C259Main Connector Function Table to refer. 7.1.1 Major Component Unit Parallel Interface Refer to “IEEE-1284 Parallel I/F Connector (Forward Channel)” on page 18 Major component unit of this printer is as follows.
  • Page 131 EPSON Stylus COLOR 670 Revision A Table 7-6. Connector CN8 Table 7-4. Connector CN6 Signal Name Function Signal Name Function GND2 Ground Sensor detect signal GND2 Ground Ground PZT drive signal ASFV Sensor power supply PZT drive signal PZT drive signal Table 7-5.
  • Page 132 EPSON Stylus COLOR 670 Revision A Table 7-8. Connector CN10 Table 7-10. Connector CN12 Signal Name Function Signal Name Function +42V Mechanism drive power supply Phase drive signal (A) +42V Mechanism drive power supply CR-A Phase drive signal (-A) Ground...

  • Page 133: Eeprom Address Map

    EPSON Stylus COLOR 670 Revision A 7.1.2 EEPROM Address Map Table 7-11. EEPROM Address Map (continued) QPIT Factory Address Explanation Settings Table 7-11. EEPROM Address Map Settings Settings QPIT Factory CPSI password Address Explanation Settings Settings Settings CPSI password CPSI password...
  • Page 134 EPSON Stylus COLOR 670 Revision A Table 7-11. EEPROM Address Map (continued) Table 7-11. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Settings Address Explanation Settings Settings Settings Settings Settings Reserved for Password Carriage phase on home bit7: Reserved...
  • Page 135 EPSON Stylus COLOR 670 Revision A Table 7-11. EEPROM Address Map (continued) Table 7-11. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Settings Address Explanation Settings Settings Settings Settings Settings Reserved Ink counter Cc 00H*2 Power off time...
  • Page 136 EPSON Stylus COLOR 670 Revision A Table 7-11. EEPROM Address Map (continued) Table 7-11. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Settings Address Explanation Settings Settings Settings Settings Settings Head Actuator +1<=n<=+32 (*1) Rank ID for VhN...

  • Page 137: Component Layout

    EPSON Stylus COLOR 670 Revision A 7.2 Component Layout Figure 7-3. C301MAIN Component Layout (Soldered Side) Figure 7-2. C301MAIN Component Layout (Parts Side) Appendix Component Layout...
  • Page 138 EPSON Stylus COLOR 670 Revision A Figure 7-5. C301PSE Component Layout Figure 7-4. C301PSB Component Layout Figure 7-6. C209 PNL Component Layout Appendix Component Layout...

  • Page 139: Exploded Diagram

    EPSON Stylus COLOR 670 Revision A 7.3 Exploded Diagram Following pages shows exploded diagram. 182 for LATIN for ETT for EAI, EUL(120V) for EAI(LATIN220V),EUR,S.E.ASIA, OCEANIA,EKL,RUSSIA EPSON STYLUS COLOR 670 NO.1 REV.01 10189 Figure 7-7. Stylus COLOR 670 Exploded Diagram 1...
  • Page 140 EPSON Stylus COLOR 670 Revision A 743 745 without 747,748 with 772 590 573 EPSON STYLUS COLOR 670 NO.2 REV.01 10189 Figure 7-8. Stylus COLOR 670 Exploded Diagram 2 Appendix Exploded Diagram...
  • Page 141 EPSON Stylus COLOR 670 Revision A (506) 542 544 542 544 542 544 542 544 589 571 EPSON STYLUS COLOR 670 NO.3 REV.01 10189 Figure 7-9. Stylus COLOR 670 Exploded Diagram 3 Appendix Exploded Diagram...
  • Page 142 EPSON Stylus COLOR 670 Revision A 02 for S.E.ASIA PACKING MATERIAL FOR EPSON STYLUS COLOR 670 10168 Rev.01 Figure 7-10. Stylus COLOR 670 Packing Material Appendix Exploded Diagram...

  • Page 143: Parts List

    EPSON Stylus COLOR 670 Revision A 7.4 Parts List Table 7-12. Stylus Color 670 Parts List (continued) Part Number Description Table 7-12. Stylus Color 670 Parts List C.P.SCREW Part Number Description C.B.S. SCREW HOUSING C.B.(O) SCREW,4X5,F/ZG COVER,PRINTER C.B.S. SCREW PAPER SUPPORT;B C.B.P-TITE SCREW,3X8,F/ZN...
  • Page 144 EPSON Stylus COLOR 670 Revision A Table 7-12. Stylus Color 670 Parts List (continued) Table 7-12. Stylus Color 670 Parts List (continued) Part Number Description Part Number Description FRAME,RIGHT SPURGEAR,67.2 FRAME,TOP SPACER,FASTEN,ROLLER,PF MOTOR,ASSY,CR SPACER,FASTEN,ROLLER,PF;B PUMP ASSY. C-RING CAP ASSY. PLANE WASHER,12.2X0.5X15 FRAME,BOTTOM ROLLER,ASSY.,PAPEREJECT...
  • Page 145 EPSON Stylus COLOR 670 Revision A Table 7-12. Stylus Color 670 Parts List (continued) Table 7-12. Stylus Color 670 Parts List (continued) Part Number Description Part Number Description STARHWEEL,8;B GROUNDINGPLATE,HEAD ROD SPRING,STAR WHEEL OIL PAD PAPER GUIDE,UPPER SLIDER,CR PAPER GUIDE,LEFT...
  • Page 146 EPSON Stylus COLOR 670 Revision A Table 7-12. Stylus Color 670 Parts List (continued) Table 7-12. Stylus Color 670 Parts List (continued) Part Number Description Part Number Description C.B.S. SCREW PAD,BREAK,EDGE GUIDE C.P.S-TITE(P4),3X6,F/ZN REINFORCEMENT PLATE,HOPPER LEAF SPRING PAD ASSY.,RIGHT PLANE WASHER,2.6X0.5X8...
  • Page 147 EPSON Stylus COLOR 670 Revision A Table 7-12. Stylus Color 670 Parts List (continued) Table 7-12. Stylus Color 670 Parts List (continued) Part Number Description Part Number Description COVER,ROLLER,LD,LEFT TRAY,PORUSPAD COVER,ROLLER,LD,RIGHT SPACER,TRAY COMPRESSION SPRING,1.961 BUSHING,FASTEN,SHAFT,LEFT LEVER,FASTEN,EDGEGUIDE;B PAPER SUPPORT,SUPPORT,UPPER EXTENSION SPRING,0.088...

  • Page 148: Electric Circuit Diagrams

    EPSON Stylus COLOR 670 Revision A 7.5 Electric Circuit Diagrams Table 7-12. Stylus Color 670 Parts List (continued) Part Number Description The following pages show the following electric circuits. PAD,ACCESSORY C301 MAIN Control Circuit C301 PSB Power Supplu Circuit PLASTIC PROTECTIVE BAG...

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