Epson Stylus Color C70 Service Manual
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Epson Stylus Color C70 Service Manual

Epson Stylus Color C70 Service Manual

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SERVICE MANUAL

Color Inkjet Printer
EPSON Stylus Color C70/C80
®
SEIJ01-004

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Summary of Contents for Epson Stylus Color C70

  • Page 1: Service Manual

    SERVICE MANUAL Color Inkjet Printer EPSON Stylus Color C70/C80 ® SEIJ01-004...
  • Page 2 SEIKO EPSON CORPORATION. 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 REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN. 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

    Provides preventive maintenance procedures and the related to a specific subject, or comment on the results achieved through a previous action. lists of Epson-approved lubricants and adhesives required for servicing the product. Indicates an operating or maintenance procedure, practice APPENDIX...
  • Page 5 Revision Status Revision Issued Date Description July 31, 2001 First Release...

  • Page 6: Table Of Contents

    1.3.7 Printer Language and Emulation ............... 20 2.1.1 Printer Mechanism ..................36 1.3.7.1 Control codes ..................20 2.1.2 Printhead ....................37 1.3.7.2 EPSON D4 control channel commands ..........21 2.1.2.1 Printing Process ................. 37 2.1.2.2 Printing Method ................. 38 1.4 OPERATOR CONTROLS ................24 2.1.3 Carriage Mechanism ..................
  • Page 7 2.2.1 C424 PSB/PSE board ................51 4.1.2 Tools ......................98 2.2.2 C424 MAIN-B Board ................54 4.1.3 Work Completion Check ................99 2.2.2.1 Main elements ................... 55 4.1.4 Screws ...................... 100 2.2.2.2 Printhead Driver Circuit ..............56 4.2 Disassembly ..................... 101 2.2.2.3 CR / PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit ....
  • Page 8 5.2.7 USB ID Readout (Checking) ..............155 5.2.7.1 Possible to Readout the Original USB ID (CASE 1) ...... 155 5.2.7.2 Impossible to Readout the Original USB ID (CASE 2) ....157 5.2.8 EEPROM Initialization ................157 5.2.9 Platen Gap Adjustment (Mechanism Adjustment) ........159 5.2.10 Head Cleaning Operation ..............

  • Page 9: Chapter 1 Product Description

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

  • Page 10: Features

    EPSON Stylus COLOR C70/C80 Revision A 1.1 FEATURES The major features of EPSON color inkjet printers EPSON Stylus COLOR C70 / C80 are: High Color Print Quality 2880 (H) X 720 (V) dpi printing 4 Color Printing (YMCK) Built-in Auto Sheet Feeder...

  • Page 11: Specifications

    EPSON Stylus COLOR C70/C80 Revision A 1.2 SPECIFICATIONS Table 1-2. Character Mode (Stylus COLOR C80) This section covers specifications of the printers. Character Pitch Printable Column LQ Speed 10 CPI (Pica) 238 CPS 1.2.1 Physical Specification 12 CPI (Elite) 285 CPS Weight: 5.8kg (without the ink cartridges)
  • Page 12 Scalable font PC 437 Greek -EPSON Roman 0.5 pt., 8 pt. - 32pt.(every 2 pt.) PC 852(East Europe) PC 853(Turkish) NOTE: Each Typeface has 4 variations as the following example of EPSON PC 855(Cyrillic) PC 857(Turkish) Roman. PC 866(Russian) DOS version...

  • Page 13: Paper Feeding

    EPSON Stylus COLOR C70/C80 Revision A 1.2.3 Paper Feeding 1.2.5 Electric Specification Feeding Method [120V Version] Rated Voltage: AC120V Friction feed with ASF Input Voltage Range: AC99∼132V Paper Path Rated Frequency Range: 50∼ 60Hz Input Frequency Range: 49.5∼ 60.5Hz Cut-sheet ASF (Top entry Front out) Rated Current: 0.6A (max.

  • Page 14: Environmental Condition

    EPSON Stylus COLOR C70/C80 Revision A 1.2.6 Environmental Condition 1.2.7 Reliability Temperature Total Print Volume: 75,000 pages (A4, Letter) Operating: 10 to 35°C Print Head Life: 3000 million dots/nozzle Non-operating: -20 to 40°C 1 month at 40°C and 120 hours at 60°C 1.2.8 Safety Approvals...

  • Page 15: Interface

    EPSON Stylus COLOR C70/C80 Revision A 1.3 INTERFACE DATA data byte n data byte n+1 hold The EPSON Stylus COLOR C70 / C80 provide USB and parallel interface as standard. -STROBE next 1.3.1 Parallel Interface setup BUSY Transmission Mode: 8 bit parallel, IEEE-1284 compatibility mode...

  • Page 16: Product Description

    EPSON Stylus COLOR C70/C80 Revision A Table 1-8. Connector Pin Assignment and Signals (continued) Table 1-6. Typical Time of tack Return Parallel I/F Mode Typical Time of tack Pin No. Signal Name In/Out Functional Description GND Pin High Speed 0.5us...

  • Page 17: Parallel Interface (Reserve Channel)

    EPSON Stylus COLOR C70/C80 Revision A 1.3.2 Parallel Interface (Reserve Channel) Table 1-9. Connector Pin Assignment and Signals (continued) Return Transmission Mode: IEEE-1284 nibble mode Pin No. Signal Name In/Out Functional Description GND Pin Adaptable Connector: See forward channel -DataAvail /...

  • Page 18: Usb Interface

    EPSON Stylus COLOR C70/C80 Revision A Extensibility Request: 1.3.3 USB Interface The printer responds affirmatively when the extensibility request values are 00H or Standard: Based on 04H, that mean, “Universal Serial Bus Specifications Revision 1.0” “Universal Serial Bus Device Class Definition 00H: Request Nibble Mode Reverse Channel Transfer.

  • Page 19: Prevention Hosts Of Data Transfer Time-Out

    EPSON Stylus COLOR C70/C80 Revision A 1.3.4 Prevention Hosts of Data Transfer Time-out Automatic Selection An initial state is compatible interface and starts IEEE1284.4 communication Generally, hosts abandon data transfer to peripherals when a peripheral is in the busy when magic strings (1284.4 synchronous commands) are received.

  • Page 20: Printer Language And Emulation

    Table 1-12. ESP/P2 control codes (Stylus COLOR C80) (continued) Typeface ESC k, ESC x Printer Language: (Stylus COLOR C70) Pitch and Point ESC X EPSON ESC/P2 expanded raster graphics Pitch ESC P, ESC M, ESC g, ESC p Font selection EPSON Remote Italic font ESC 4, ESC 5...

  • Page 21: Epson D4 Control Channel Commands

    EPSON Stylus COLOR C70/C80 Revision A Control codes for graphics mode 1.3.7.2 EPSON D4 control channel commands The details of each command refer to 1284.4 control command specifications (DS-716). Table 1-13. Control codes for graphics mode Command List Initialize Printer ESC @ Table 1-14.
  • Page 22 EPSON Stylus COLOR C70/C80 Revision A NOTE: (*1) parameters indicate a time (Stylus COLOR C70 only) Status Codes The parameter <Status Code>is two bytes of ASCII codes that indicates Parameter Mean Note printer status. m1, m2, year year = m2 x 256 +m1 Table 1-15.
  • Page 23 EPSON Stylus COLOR C70/C80 Revision A Quantity of ink The parameter <nn1>, <nn2>, <nn3>, <nn4> are two bytes ASCII codes that indicate quantity of black ink, cyan ink, magenta ink and yellow ink respectively. If the ink cartridge is not inserted, <nnx> indicates “NA”.

  • Page 24: Operator Controls

    EPSON Stylus COLOR C70/C80 Revision A 1.4 OPERATOR CONTROLS 1.4.2.2 Indicators (1) Power Lights when the operate switch is “ON” and AC power is supplied. 1.4.1 Operate Switch (2) Paper Out Operate switch is located on the control panel. Lights during the paper-out condition, and blinks during the paper-jam condition.

  • Page 25: Panel Functions

    EPSON Stylus COLOR C70/C80 Revision A 1.4.3 Panel Functions Table 1-20. Panel Functions with Power On(Stylus COLOR C80) Table 1-18. Panel Functions(Stylus COLOR C70) Switch Pressing with Power on Function Switch Function • Start status printings. * Paper • Loads or Ejects the Paper.

  • Page 26: Printer Condition And Panel Status

    EPSON Stylus COLOR C70/C80 Revision A 1.4.4 Printer Condition and Panel Status Table 1-23. Particular settings mode (Stylus COLOR C70) Switch Function Table 1-25. Printer Condition and LED Status • Initialize EEPROM. Load/Eject Indicators Printer Status Priority • Reset the ink overflow counter in EEPROM.

  • Page 27: Printer Setting Mode (Stylus Color C80 Only)

    EPSON Stylus COLOR C70/C80 Revision A 1.4.5 Printer setting mode (Stylus COLOR C80 only) (g)When Cleaning button is pressed, Printer memorize the setting value, and changes the indication to the main menu. When turning the printer on with pushing the Cleaning switch, the Paper Out LED Paper Out LED, Ink Out LED and Power LED show the current menu setting.

  • Page 28: Print Head Alignment Mode

    EPSON Stylus COLOR C70/C80 Revision A 1.4.5.2 Print head alignment mode 1.4.6 Printer Initialization Some alignment can be adjusted by users. There are three kinds of initialization method. Alignment method Power-on Initialization This printer is initialized when turning the printer power on, or printer recognized (a) Press Cleaning button.

  • Page 29: Errors

    EPSON Stylus COLOR C70/C80 Revision A 1.4.7 Errors Ink Out When the printer runs out the most part of the ink of any color, it warns ink-low and keeps printing. When the printer runs out the whole ink of any one color, it stops printing and indicates ink-out error.

  • Page 30: Paper

    EPSON Stylus COLOR C70/C80 Revision A 1.5 PAPER 1.5.2.2 Envelope Table 1-28. Paper Specification (Envelope) 1.5.1 Paper Handling No.10: Width 241 mm x Length 104.8 mm Size Width 220 mm x Length 110 mm Do not perform reverse feed more than 9.5 mm (0.38”).

  • Page 31: Epson Special Media

    EPSON Stylus COLOR C70/C80 Revision A 1.5.2.4 EPSON special media (5) Premium Glossy Photo Paper EPSON specifically designed media for ink jet printers Table 1-34. Premium Glossy Photo Paper (1) Bright White ink Jet Paper Width 210 mm x Length 297 mm Size Letter: Width 215.9 mm x Length 279.4 mm...

  • Page 32: Printing Area

    EPSON Stylus COLOR C70/C80 Revision A 1.5.3 Printing Area Table 1-39. Character mode Left margin Right Margin Top Margin Bottom Margin 1.5.3.1 Cut Sheet Paper Size (min.) (min.) (min.) (min.) 14 mm (0.54”) 3 mm (0.12”) 3 mm (0.12”) 3 mm (0.12”) 14 mm (0.54”)

  • Page 33: Envelopes

    EPSON Stylus COLOR C70/C80 Revision A 1.5.3.2 Envelopes Printable Area Figure 1-7. Printable Area for Envelopes Table 1-41. Envelope Margin Left Margin Right Margin Top Margin Bottom Margin Paper Size (min.) (min.) (min.) (min.) 3 mm (0.12”) 28 mm (1.10”) 3 mm (0.12”)

  • Page 34: Ink Cartridge

    EPSON Stylus COLOR C70/C80 Revision A 1.6 INK CARTRIDGE 1.6.2 Color Ink Cartridge Type: Exclusive Cartridge Color: Magenta, Cyan, Yellow 1.6.1 Black Ink Cartridge Print Capacity: 420 pages / A4 (360 dpi, 5% duty each color) Ink Life: 2 years from production date...

  • Page 35: Chapter 2 Operating Principles

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

  • Page 36: Overview

    Paper Back Lever Carriage Lock Mechanism). Paper separation pad Like other EPSON ink jet printers, the Stylus COLOR C70/C80 is equipped with two CR unit DC motors; one for ASF, Paper feeding/ Pump mechanism, and one for CR mechanism. ASF unit uses rear entry front eject system. This ASF unit is also designed newly and LD roller loads the paper to the printer mechanism.

  • Page 37: Printhead

    EPSON Stylus COLOR C70/C80 Revision A 2.1.2 Printhead CSIC-chip Nozzle Selector Board The printhead uses a new developed P-MACH head and Stylus COLOR C70/C80 can perform variable dot printing. The CSIC-chip is mounted on the ink cartridge. By storing ink life data, this IC makes Ink Cartridge it possible to control the ink in ink cartridge unit.

  • Page 38: Printing Method

    EPSON Stylus COLOR C70/C80 Revision A An appropriate PZT latched by the nozzle selector is pushed into the cavity by the Normal dot printing common voltage applied from the main board. By this operation, ink stored in the With this printer, Economy dot printing is basically used only during Economy cavity spurts out from nozzles.(Refer to Figure 2.1.2.2.)

  • Page 39: Carriage Mechanism

    EPSON Stylus COLOR C70/C80 Revision A 2.1.3 Carriage Mechanism PE Actuator Linear Scale CR Motor The carriage mechanism consists of Carriage motor (CR motor), Carriage unit CR Encoder (including printhead), CR timing belt, CR guide shaft, CR guide frame etc. In contrast to previous models, this model has no HP sensor, so that when the carriage unit goes out of step at right side, it is judged to be at the home position.

  • Page 40: Paper Feeding Mechanism

    EPSON Stylus COLOR C70/C80 Revision A 2.1.4 Paper Feeding Mechanism Table 2-2. PF Motor Specifications Item Description The paper feeding mechanism consists of Paper feed motor (PF motor), PF roller, Paper eject roller, Star wheel roller, and so on. The paper feeding mechanism feeds...

  • Page 41: Paper Loading Mechanism (Asf Unit)

    EPSON Stylus COLOR C70/C80 Revision A 2.1.5 Paper Loading Mechanism (ASF Unit) This ASF unit was designed newly for this product and consists of LD roller, Pad holder (Paper return plate), ASF Frame, Hopper, and so on. The Paper loading mechanism is positioned at the printer rear. The Paper loading For the major feature of this ASF unit, ASF HP sensor is not used and the single LD mechanism loads paper at the ASF unit and feeds paper to the PF roller.
  • Page 42 EPSON Stylus COLOR C70/C80 Revision A The driving force from the PF motor is transmitted via Combination gears 18.4 CLUTCH MECHANISM and 32.8, Spur gear 22.4, Spur gear 12 and Combination gear ratchet 33.4 in that The Clutch mechanism is located at the rear of the printer inside the left part of the order, causing the clutch and the LD roller to rotate clockwise so that paper is fed.
  • Page 43 EPSON Stylus COLOR C70/C80 Revision A Standby condition The driving force from the PF motor is transmitted via combination gears 18.4 and 32.8, spur gear 22.4, the planetary gear set, spur gear 12 and the clutch body in that Print data is not sent to the printer for 3 seconds.
  • Page 44 EPSON Stylus COLOR C70/C80 Revision A SILENCE CAM MECHANISM The silence cam and the silence lever on the ASF right frame apply Following is the operation principles mentioned how to operate the silence CAM to a large amount of torque from A to B in order to move the hopper drive ASF hopper quietly.
  • Page 45 EPSON Stylus COLOR C70/C80 Revision A As you can see pictures, hopper is in the stand-by condition depending on "coupling shaft limitation lever" position, and this continues keeping by the "slowdown nail". Hopper Up On the other hands, user can install paper(s) onto the hopper under the initial hopper status, and the "paper return lever"...
  • Page 46 EPSON Stylus COLOR C70/C80 Revision A Step 3 : Paper Return Sequence Also, "paper return lever" will suddenly be jumped out as well as the "slow down nail" passes over a step (Point A or Point B). This timing is managed and Once a top paper is loaded to the printer internal, then the paper return sequence controlled by the "CAM gear"...
  • Page 47 EPSON Stylus COLOR C70/C80 Revision A Step 4 : ASF Reset Operation 11. Once a loaded paper is completely printed and ejected, printer will perform the ASF reset operation if the next printing data does not input for a few seconds. Note...
  • Page 48 EPSON Stylus COLOR C70/C80 Revision A Step 5 : How to Operate Paper Return Lever Following is the operation principles mentioned how to operate paper return lever. 12. Once you remove the "silence gear", you can see the "cam gear" which has a role for pushing down the "paper return transmission lever.

  • Page 49: Ink System Mechanism

    EPSON Stylus COLOR C70/C80 Revision A 2.1.6 Ink System Mechanism (*1): The PF Motor rotational direction = seen from the right side of the printer. Following figure shows the overview of the pump mechanism operation. Ink system mechanism consists of pump unit (include the CR lock lever) and capping mechanism.

  • Page 50: Capping Mechanism

    EPSON Stylus COLOR C70/C80 Revision A 2.1.6.2 Capping Mechanism The capping mechanism covers the printheads with the cap holder to prevent the nozzle from increasing viscosity when the printer is in stand-by mode or when the printer is off. This product has valveless cap system. Air valve function used for the previous models pumps and ejects ink only inside the cap by absorbing ink with the valve open.

  • Page 51: Electrical Circuit Operating Principles

    EPSON Stylus COLOR C70/C80 Revision A 2.2 Electrical Circuit Operating Principles 2.2.1 C424 PSB/PSE board The power supply boards of Stylus COLOR C70/C80 use a RCC (Ringing Chalk The electric circuit of the Stylus COLOR C70/C80 consists of the following boards.
  • Page 52 EPSON Stylus COLOR C70/C80 Revision A Regardless of the state of the power switch (On or OFF), the voltage is always applied to the primary side of the power supply board from the moment or at the PSC Sigual from state that AC-plug is plugged in.
  • Page 53 EPSON Stylus COLOR C70/C80 Revision A +42VDC line drop limitation circuit: This protection circuit is in the same line as +42V over voltage protection circuit is located. The output voltage level of the +42V line is monitored by a Zener diode.(ZD90) This circuit shuts down the +42V line forcefully when the voltage...

  • Page 54: C424 Main-B Board

    EPSON Stylus COLOR C70/C80 Revision A 2.2.2 C424 MAIN-B Board Use of the 3.3V chips in the logic circuit The 3.3 V regulator (IC7) on the C424 MAIN-B produces 3.3 V by pressuring The printer mechanism is controlled by C424 MAIN-B.

  • Page 55: Main Elements

    EPSON Stylus COLOR C70/C80 Revision A 2.2.2.1 Main elements Table 2-6, Table 2-7 shows the function of the each main elements on C424 MAIN-B. Table 2-6. Main Elements of the C424 MAIN-B (Stylus COLOR C70) Table 2-7. Main Elements of the C424 MAIN-B (Stylus COLOR C80)

  • Page 56: Printhead Driver Circuit

    EPSON Stylus COLOR C70/C80 Revision A 2.2.2.2 Printhead Driver Circuit The printhead driver circuit consists of the following two components: +42V Common driver IC (IC13 : E09A38RA) directly attached to the C424 MAIN- B board. IC7 CPU IC13 CPU E01A27CA...

  • Page 57: Cr / Pf Motor (Pf/ Pump/ Asf Motor) Driver Circuit

    EPSON Stylus COLOR C70/C80 Revision A 2.2.2.3 CR / PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit 2.2.2.4 Reset Circuit The motor driver IC (IC8) on the MAIN board drives CR / PF motor. This product uses Reset circuits consist of the rest IC (IC6 : Stylus COLOR C70, IC1 : Stylus COLOR DC motor and performs constant current PWM drive.

  • Page 58: Eeprom Control Circuit

    EPSON Stylus COLOR C70/C80 Revision A 2.2.2.5 EEPROM Control Circuit 2.2.2.6 Sensor Circuit Since EEPROM is nonvolatile memory, it keeps written information if the printer C424 MAIN-B is equipped with the following one sensor to detect the status of the power is turned off.
  • Page 59 EPSON Stylus COLOR C70/C80 Revision A +3.3V E01A27CA +3.3V HLAT SWA1 HNCHG NCHG HSOCLK PE Sensor Head FFC HSOCMD2 HSOCMD1 C_P41 AND1 C_P42 AND2 Figure 2-32. PE Sensor Circuit Diagram & Head Around Temperature Operating Principles Electrical Circuit Operating Principles...

  • Page 60: Chapter 3 Troubleshooting

    C H A P T E R TROUBLESHOOTING...

  • Page 61: Overview

    EPSON Stylus COLOR C70/C80 Revision A 3.1 Overview START This chapter describes how to troubleshoot problems. It consists of the sections shown in the flowchart below. When identifying and troubleshooting problems, be sure to proceed to the correct section specified in the flowchart.

  • Page 62: Communication Error

    EPSON Stylus COLOR C70/C80 Revision A 3.1.1 Communication Error 3.1.2 Too Late Throughput This section describes the procedures for solving the problem when no communication This section describes the procedures for checking printers that have been returned at all is received from the computer after the printer power has been turned on, even because the printing speed suddenly became much slower after having operated when initialization has completed normally and the printer is at the standby condition.

  • Page 63: Status Monitor Does Not Operate

    EPSON Stylus COLOR C70/C80 Revision A 3.1.3 Status Monitor does not operate Table 3-3. Communication Error Checking Point Step Check Point Remedy This section describes the procedures for checking printers when the Status Monitor suddenly can no longer be used to check the printer status, even though the Status Use the The relationship between the IEEE 1284.4 for Parallel setting status...

  • Page 64: Troubleshooting With Led Error Indications

    EPSON Stylus COLOR C70/C80 Revision A 3.1.4 Troubleshooting with LED Error Indications This section describes the procedures for solving the problem when an error is displayed. Refer to the table below and carry out each check in the order given. If you are unsure of...
  • Page 65 EPSON Stylus COLOR C70/C80 Revision A Table 3-5. Relationship between Error Indication and Presumption Cause Table 3-5. Relationship between Error Indication and Presumption Cause Error status Probable cause Error status Probable cause 16.The paper back lever has come off and fallen down, and...

  • Page 66: Remedy When A Paper Out, Double Feed Or Paper Jam Error Occurs

    EPSON Stylus COLOR C70/C80 Revision A 3.1.4.1 Remedy when a paper out, double feed or paper jam error Table 3-6. Communication Error Checking Point occurs Step Check Point Remedy This section provides check points and corresponding actions which are necessary Is no paper loaded? Set a cleaning sheet in the ASF up side down.
  • Page 67 EPSON Stylus COLOR C70/C80 Revision A Table 3-6. Communication Error Checking Point Table 3-6. Communication Error Checking Point Step Check Point Remedy Step Check Point Remedy Is there any paper Clean away any paper or other foreign particles that may be Is the EJ roller holder Place the EJ roller holder in the correct position.
  • Page 68 EPSON Stylus COLOR C70/C80 Revision A Table 3-6. Communication Error Checking Point Table 3-6. Communication Error Checking Point Step Check Point Remedy Step Check Point Remedy Does the PE lever not Move the PE lever at the rear of the printer manually and...
  • Page 69 EPSON Stylus COLOR C70/C80 Revision A Table 3-6. Communication Error Checking Point Table 3-6. Communication Error Checking Point Step Check Point Remedy Step Check Point Remedy Is the surface of the If the surface is dirty, remove the linear scale and clean it...
  • Page 70 EPSON Stylus COLOR C70/C80 Revision A Table 3-6. Communication Error Checking Point Table 3-6. Communication Error Checking Point Step Check Point Remedy Step Check Point Remedy The spring that The photograph below shows the normal setting position for If the customer uses...

  • Page 71: Remedies For No I/C And Ink Out Errors

    EPSON Stylus COLOR C70/C80 Revision A 3.1.4.2 Remedies for No I/C and Ink Out Errors Table 3-7. This section describes the procedures for solving the problem when an ink out (cartridge out) error is displayed even though This section includes the check points and corresponding actions which are necessary a brand-new ink cartridge has been installed.
  • Page 72 EPSON Stylus COLOR C70/C80 Revision A Table 3-7. This section describes the procedures for solving the problem Table 3-7. This section describes the procedures for solving the problem when an ink out (cartridge out) error is displayed even though when an ink out (cartridge out) error is displayed even though a brand-new ink cartridge has been installed.
  • Page 73 EPSON Stylus COLOR C70/C80 Revision A Table 3-7. This section describes the procedures for solving the problem Table 3-7. This section describes the procedures for solving the problem when an ink out (cartridge out) error is displayed even though when an ink out (cartridge out) error is displayed even though a brand-new ink cartridge has been installed.
  • Page 74 EPSON Stylus COLOR C70/C80 Revision A Table 3-7. This section describes the procedures for solving the problem when an ink out (cartridge out) error is displayed even though a brand-new ink cartridge has been installed. Step Check Point Remedy Have the cartridges been...

  • Page 75: Countermeasures When An Ink Low Indication Appears

    EPSON Stylus COLOR C70/C80 Revision A 3.1.4.3 Countermeasures when an Ink Low indication appears. 3.1.4.4 Remedies for the Maintenance Error This section describes the procedures for solving the problem when an Ink Low If a maintenance error momentarily occurs, operation of the printer will not be indication is displayed unexpectedly.

  • Page 76: Remedies For Fatal Error

    EPSON Stylus COLOR C70/C80 Revision A NOTE: During the Step 2, if the Load/Eject button is pressed, the Maintenance 3.1.4.5 Remedies for Fatal Error Error is not cleared but the EEPROM initialization mode is activated Fatal errors can occur with this printer for one of the following two reasons.
  • Page 77 EPSON Stylus COLOR C70/C80 Revision A Table 3-10. Countermeasures when a fatal error occurs Table 3-10. Countermeasures when a fatal error occurs Step Check Point Remedy Step Check Point Remedy Is the FFC NOTE:These countermeasures include ways to solve paper...
  • Page 78 EPSON Stylus COLOR C70/C80 Revision A Table 3-10. Countermeasures when a fatal error occurs Table 3-10. Countermeasures when a fatal error occurs Step Check Point Remedy Step Check Point Remedy Is CN8 (FFC) on CN8 on the main board is a connector that transmits the...

  • Page 79: Isolating The Faulty Part On The Power Supply Board

    EPSON Stylus COLOR C70/C80 Revision A Table 3-10. Countermeasures when a fatal error occurs 3.1.5 Isolating the Faulty Part on the Power Supply Board Step Check Point Remedy This section explains how to troubleshoot the following problems: Is there a...
  • Page 80 EPSON Stylus COLOR C70/C80 Revision A Table 3-11. Isolating the Faulty Part Table 3-11. Isolating the Faulty Part on the Power Supply Board on the Power Supply Board Step Check Point Remedy Step Check Point Remedy Is CN19 (white Check that CN19 is not loose or disconnected. If it is loose or Are any of the C11 and C51 are the most likely places for this to happen.
  • Page 81 EPSON Stylus COLOR C70/C80 Revision A Table 3-11. Isolating the Faulty Part Table 3-11. Isolating the Faulty Part on the Power Supply Board on the Power Supply Board Step Check Point Remedy Step Check Point Remedy Is a normal Measurement points are shown below.

  • Page 82: Isolating The Faulty Part According To The Phenomenon

    EPSON Stylus COLOR C70/C80 Revision A 3.1.6 Isolating the Faulty Part according to the Phenomenon Table 3-12. Troubleshooting for surface problems Step Surface problem Reference page Refer to this section if you could not solve the problem in Section 3.1.4 or Section 3.1.5 or need more information to isolate the cause according to the exhibited...

  • Page 83: Pf Motor Driver Abnormal 1

    EPSON Stylus COLOR C70/C80 Revision A 3.1.6.1 PF Motor Driver Abnormal 1 This section describes the procedures for solving the problem when no error occurs, but only the PF motor operates at high speed all the time even though this has not happened before.

  • Page 84: Asf Driver Abnormal 1

    EPSON Stylus COLOR C70/C80 Revision A 3.1.6.2 ASF Driver Abnormal 1 Table 3-14. ASF Driver Abnormal 1 This section describes the procedures for solving the problem when no error occurs, Step Check Point Remedy but the ASF is not driven at all even though the PF motor operates normally. This 3.

  • Page 85: Unexpected Ink Out Error 1 (During Print Operation)

    PZTs. 2. Points to note during head replacement were strictly observed by Epson subsidiaries and their partners, and so no repair problems ever occurred. 3. The Stylus COLOR 900/980 used conventional ink cartridges which...

  • Page 86: Pf Motor Driver Abnormal 2

    EPSON Stylus COLOR C70/C80 Revision A 3.1.6.4 PF Motor Driver Abnormal 2 Table 3-16. PF Motor Driver Abnormal 2 Step Check Point Remedy This section describes the procedures for solving the problem when no error occurs, but only the PF motor operates at high speed all the time even though this has not...

  • Page 87: Carriage Operation Abnormal

    EPSON Stylus COLOR C70/C80 Revision A 3.1.6.5 Carriage Operation Abnormal Table 3-17. Carriage Operation Abnormal This section describes the procedures for solving the problem when a fatal error occurs Step Check Point Remedy as soon as the power is turned on and the printer stops operating. The methods of...
  • Page 88 EPSON Stylus COLOR C70/C80 Revision A Table 3-17. Carriage Operation Abnormal Step Check Point Remedy Does the carriage lock If the carriage lock lever cannot be operated when it is still lever operate in the active position, the carriage cannot move in the normally? printing area direction.

  • Page 89: Dot Missing 1

    EPSON Stylus COLOR C70/C80 Revision A 3.1.6.6 Dot Missing 1 Table 3-18. Dot Missing 1 This section describes the procedures for solving the problem when the printer is Step Check Point Remedy printing, but no print actually appears on the paper. Because this covers situation when...

  • Page 90: Dot Missing 2

    EPSON Stylus COLOR C70/C80 Revision A 3.1.6.7 Dot Missing 2 Table 3-19. Dot Missing 2 This section describes the procedures for solving the problem when a specific nozzle is Step Check Point Remedy not firing (dots are missing). If none of the nozzles are firing and nothing is printing,...
  • Page 91 EPSON Stylus COLOR C70/C80 Revision A Table 3-19. Dot Missing 2 Table 3-19. Dot Missing 2 Step Check Point Remedy Step Check Point Remedy Can the cap unit operate Is there any dust or other If there is any dust or foreign matter on the edge of the cap (Cont.)

  • Page 92: Dot Missing 3

    EPSON Stylus COLOR C70/C80 Revision A Table 3-19. Dot Missing 2 Table 3-20. Dot Missing 3 Step Check Point Remedy Step Check Point Remedy Let the printer stand for a After leaving the printer for a day, (In worst case, 3 to 4 days Have any parts or units Carry out PG adjustment.

  • Page 93: Repair Handling Failure

    If the end of the shaft is visible at point A, then it is set correctly. If when the ASF "SHARP", and so the combination of the main board being "EPSON" and the end of the shaft is not visible at point B, the ASF change lever is driven in the head being "SHARP"...
  • Page 94 EPSON Stylus COLOR C70/C80 Revision A Table 3-22. ASF Abnormal 2 Table 3-22. ASF Abnormal 2 Step Check Point Remedy Step Check Point Remedy 2. When the ASF is driven in the reverse direction to paper feeding (dur- Does noise...

  • Page 95: Cr Motor Operation Abnormal

    EPSON Stylus COLOR C70/C80 Revision A 3.1.6.11 CR Motor Operation Abnormal This section describes the procedures for checking printers that have been returned because the printing speed suddenly became much slower after having operated normally up until then. This problem basically cannot be immediately reproduced when carrying out repairs.

  • Page 96: Chapter 4 Disassembly And Assembly

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

  • Page 97: Overview

    EPSON Stylus COLOR C70/C80 Revision A 4.1 Overview 4.1.1 Precautions See the precautions given under the handling “WARNING” and “CAUTION” in the following column when disassembling or assembling the product. This section describes procedures for disassembling the main components of the product.

  • Page 98: Tools

    EPSON Stylus COLOR C70/C80 Revision A 4.1.2 Tools Never remove the ink cartridge from the carriage unless this manual specifies to do so. Use only specified tools to avoid damaging the printer. When transporting the printer after installing the ink cartridge, be sure to pack the printer for transportation without removing Table 4-1.

  • Page 99: Work Completion Check

    EPSON Stylus COLOR C70/C80 Revision A 4.1.3 Work Completion Check Table 4-2. Work Completion Check (continued) Classifi- If any service is made to the printer, use the checklist shown below to confirm all Item Check Point Status cation works are completed properly and the printer is ready to be returned to the user.

  • Page 100: Screws

    EPSON Stylus COLOR C70/C80 Revision A 4.1.4 Screws Table 4-4. List of Screw Types The screws used in the printer are as shown in Table 4-3. Make sure you always use the Specifications Appearance Specifications Appearance correct type and number of screws for the assembling part. See Table 4-4 for the screw (No.1) C.B.P,...

  • Page 101: Disassembly

    EPSON Stylus COLOR C70/C80 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. Printer Cover Removal 4.2.1.1 P.102 Stacker Assembly Removal 4.2.1.2 P.102 Upper Case Removal 4.2.1.3 P.103...

  • Page 102: Housing Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.1 Housing Removal 4.2.1.2 Stacker Assembly Removal Open the Stacker Assembly. 4.2.1.1 Printer Cover Removal Use a flat-tipped screwdriver or similar tool to disengage the two Hooks, and then Open the Printer Cover. remove the Stacker Assembly.

  • Page 103: Upper Case Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.1.3 Upper Case Removal 6 Hooks Remove the Printer Cover. (Refer to Section 4.2.1.1) Remove the Stacker Assembly. (Refer to Section 4.2.1.2.) Remove the three screws (1) (CBP 3x10 {6±1 kgf.cm}) that are securing the Upper Case.

  • Page 104: Rear Cover Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.1.4 Rear Cover Removal 4.2.1.5 Middle Housing Removal Remove the Upper Case. (Refer to Section 4.2.1.3.) Remove the Rear Cover. (Refer to Section 4.2.1.4.) Remove the two screws (1) (CBP 3x10 {6±1 kgf.cm}) and the screw (2) (CBS 3x6 Remove the six screws (1) (CBP 3x10 {6±1 kgf.cm}) that are securing the Middle...

  • Page 105: Printer Mechanism Unit Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.1.6 Printer Mechanism Unit Removal Use a flat-tipped screwdriver or your finger to disengage the Hook Remove the Middle Housing. (Refer to Section 4.2.1.5.) from the notch at the bottom of the Lower Case.
  • Page 106 EPSON Stylus COLOR C70/C80 Revision A Disengage the two Hooks, and then remove the Lower Case. When you install the printer mechanism on to Lower Housing, locate a ink tube top to the correct position on its pad. If you forget this, user will encounter the ink leak trouble.
  • Page 107 EPSON Stylus COLOR C70/C80 Revision A These Gears (Spur Gear 21.5, Combination Gears 10.5 and 21.2, Combination Gear 12x16 and Spur Gear 21: see the photograph Cleaner Blade below for details) are high-precision Gears. The precision settings Cloth Rubber Home...

  • Page 108: Waste Ink Pad Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.1.7 Waste Ink Pad Removal 4.2.2 ASF Unit Removal Remove the Printer Mechanism. (Refer to Section 4.2.1.6) Remove the Printer Mechanism. (Refer to Sections 4.2.1.6.) Remove the two Waste Ink Pad from Lower Case.
  • Page 109 EPSON Stylus COLOR C70/C80 Revision A CN 8 CN 9 ASF Mounting Plate CN12 CN 13 CN 14 CN 19 Figure 4-19. ASF Mounting Plate Removal Figure 4-21. Connectors Removal Disconnect the connector (white 4-pin) from the Encoder Board Assembly.

  • Page 110: Main Board Assembly Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.3 Main Board Assembly Removal When re-installing the ASF Unit, make sure that all Harnesses are placed into the appropriate slots while referring to Figure Remove the ASF Unit. (Refer to Section 4.2.2.) 4-22.

  • Page 111: Power Supply Board Assembly Removal

    EPSON Stylus COLOR C70/C80 Revision A C.B.S 3x6 When the Main Board Assembly has been replaced, all circuit board settings will be returned to their default setting values, so the following adjustments should be carried out. For details, refer to Table 5-1 in Chapter 5.
  • Page 112 EPSON Stylus COLOR C70/C80 Revision A When installing the power supply board assembly and the AC inlet mounting plate, the screws should be installed in the order shown in the illustration. (Figure 4-27, 4-28) When installing the Cable Cover, it should be installed so that the side with the notches is facing upward.

  • Page 113: Print Head / Ink System Unit Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.5 Print Head / Ink System Unit Removal C.B.S 3x6 Remove the Printer Mechanism. (Refer to Sections 4.2.1.6.) Remove the Ink Cartridges. Cutting parts Release the CR Lock Lever. CR Guide Plate Figure 4-31. CR Guide Plate Removal...
  • Page 114 EPSON Stylus COLOR C70/C80 Revision A Remove the four screws (2) (CBS 3x6 {8±1 kgf.cm}) that are securing the Paper Eject Frame Unit to the Printer Mechanism, and then remove the Paper Eject Be careful not to break the Cable Head Holder Hook.
  • Page 115 EPSON Stylus COLOR C70/C80 Revision A 14. Remove Sus-Plate 3. Sus-Plate 3 can only be removed from the left side. Furthermore, it should also be inserted from the left side when it is installed. Sus-Plate 2 Torsion Spring 49 C.B.S 3x6 C.B.S 3x6...

  • Page 116: Carriage Unit / Cr Guide Shaft Removal

    EPSON Stylus COLOR C70/C80 Revision A 16. Disconnect the two FFCs, and then remove the Print Head. 4.2.6 Carriage Unit / CR Guide Shaft Removal Remove the Print Head. (Refer to Section 4.2.5.) FFC (Wider) Various adjustments must be carried out after removing or replacing the Print Head.
  • Page 117 EPSON Stylus COLOR C70/C80 Revision A If the Linear Scale is pulled out from the right side, the Extension Step 1 Spring 1.494 may be damaged, so always pull it out from the left side. Securing Position (Step 1) Securing...
  • Page 118 EPSON Stylus COLOR C70/C80 Revision A Remove the Timing Belt from the Pinion Gear on the CR Motor. 10. Remove the screw (2) (CBS 3x6 {8±1 kgf.cm}), and then remove the Holder Stopper. When re-installing the Holder Stopper, secure it so that there is a clearance of 2–5 mm between it and the Pulley driven holder.
  • Page 119 EPSON Stylus COLOR C70/C80 Revision A 15. While pulling the PG Adjust Lever forward, turn it counterclockwise to disengage If the intention is to remove the Carriage Unit as a single block, it. Once it has been disengaged, remove the PG Adjust Lever.
  • Page 120 EPSON Stylus COLOR C70/C80 Revision A 17. Pull the CR Guide Shaft out from the left. At this time, be careful not to lose the three washers (Leaf Washer and two Normal Washer) which are inserted into the left side of the CR Guide Shaft.

  • Page 121: Front Paper Guide Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.7 Front Paper Guide Removal Carry out all of the adjustments in Table 5-1 in the order given Remove the Paper Eject Frame Unit. (Refer to Steps 1 to 10 in Section 4.2.5.) when removing or replacing the CR guide shaft.

  • Page 122: Ej Roller Unit Removal

    EPSON Stylus COLOR C70/C80 Revision A Turn the Front Paper Guide to the front and then remove it. 4.2.8 EJ Roller Unit Removal Remove the Front Paper Guide. (Refer to Section 4.2.7.) Front Paper Guide If not removing the Carriage Unit, move the Carriage Unit to the middle position.

  • Page 123: Motor Removal

    EPSON Stylus COLOR C70/C80 Revision A Remove the Bushings 5 from the mounting holes at both ends, and turn the EJ 4.2.9 Motor Removal Roller Unit upward. 4.2.9.1 PF Motor Removal Remove the Printer Mechanism. (Refer to Sections 4.2.1.6) Remove the Main Shield Plate (Right) from the Main Board.

  • Page 124: Cr Motor Removal

    EPSON Stylus COLOR C70/C80 Revision A Peel off the Acetate Tape that is securing the PF Motor Assembly Harness to the 4.2.9.2 CR Motor Removal PF Frame Assembly. Remove the Printer Mechanism. (Refer to Sections 4.2.1.6) Remove the M/B Support Shield Plate (Right). (Refer to Step 6 of Section 4.2.2) Disconnect the connector (CN14: white 2-pin) from the Main Board Assembly.

  • Page 125: Pe Actuator Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.10 PE Actuator Removal Remove the ASF Unit. (Refer to Sections 4.2.2) Remove the screw (2) (CBS 3x6 {8±1 kgf.cm}) that is securing the PE Actuator. Torsion Spring Remove the PE Actuator. PE Lever Base PE Actuator Figure 4-60.

  • Page 126: Pf Roller Unit Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.11 PF Roller Unit Removal Rotary Encoder Remove the Printer Mechanism. (Refer to Sections 4.2.1.6) Remove the Front Paper Guide. (Refer to Section 4.2.7.) Remove the Timing Belt from the Pinion Gear of the PF Motor. (Refer to Steps 4 and 5 of Section 4.2.9.1.)

  • Page 127: Asf Unit Disassembly

    EPSON Stylus COLOR C70/C80 Revision A 4.2.12 ASF Unit Disassembly If the Shaft is moved more than 5 cm to the left, the powder [ASF Unit right side removal] coating on the PF Roller may get scraped against the Hooks at the rear of the Paper Guide and come off.
  • Page 128 EPSON Stylus COLOR C70/C80 Revision A Disengage the Hook from the Hopper Torsion Bar Holder. C.B.P 3x6 Torsion Bar Hopper Hook Silence Cam 2 Hooks Torsion Spring Silence Cam Cover Silence Lever Point A Extension Spring Figure 4-65. ASF Unit Right Side Removal (2) Figure 4-67.
  • Page 129 EPSON Stylus COLOR C70/C80 Revision A There is a phase difference between the Paper Back Lever Cam and the Silence Cam. When reassembling the ASF, match up the phase (1) between the Spur Gear and the Silence Cam, and then (2) between the Silence Cam and the Paper Back Lever Cam.
  • Page 130 EPSON Stylus COLOR C70/C80 Revision A [ASF Unit left side removal] There is a U-type Spring at the left end of the Shaft. Set it so that 18. Remove the Torsion Spring and the Change Lever. the concave part is on the inside (LD Roller side) and the convex side is on the outside (Frame Left Side).
  • Page 131 EPSON Stylus COLOR C70/C80 Revision A [Paper Back Lever Removal] 25. Disengage the tab of the ASF Middle Holder, and then slide the ASF Middle CBP 3x6 Holder to the left to remove it. Use tweezers or similar tool to push the tab from underneath the Frame, and in this condition, move the ASF Middle Holder to the left so that it can be released.

  • Page 132: Asf Assembly Points

    EPSON Stylus COLOR C70/C80 Revision A 4.2.12.1 ASF Assembly Points When removing the ASF Middle Holder (Left), be careful not to This section describes the phase adjustments which must be carried out when the ASF lose the Torsion Spring which applies tension to the Paper Back has been disassembled and is being reassembled.
  • Page 133 EPSON Stylus COLOR C70/C80 Revision A Silence Lever Support Spur Gear 28.8 Hook Torsion Bar Hopper Nail Nail Silence Lever Paper Back Lever Cam Figure 4-76. Reassembly (1) Figure 4-77. Reassembly (2) Move the Support Paper Back Lever to the specified position.

  • Page 134: Rotary Encoder Removal

    EPSON Stylus COLOR C70/C80 Revision A 4.2.13 Rotary Encoder Removal Place the CR Guide Shaft so that it will not get damaged, and then lift up the CR Frame and remove it. Remove the Main Board Shield Plate (Right). (Refer to Steps 1 and 2 in Section 4.2.3.)
  • Page 135 EPSON Stylus COLOR C70/C80 Revision A PF Scale Assembly Cutting Parts Spacer Rear-Center of Printer Mechanism Torsion Spring CR Guide Shaft Figure 4-81. Rotary Encoder Removal Figure 4-82. Rotary Encoder Installation (1) Handle the Rotary Encoder carefully at all times while working in Cutting Parts order to prevent it from becoming broken or otherwise damaged.
  • Page 136 EPSON Stylus COLOR C70/C80 Revision A Dowel Lower Right Side Figure 4-84. Rotary Encoder Installation (3) Disassembly and Assembly Disassembly...

  • Page 137: Chapter 5 Adjustment

    C H A P T E R ADJUSTMENT...

  • Page 138: Overview

    EPSON Stylus COLOR C70/C80 Revision A 5.1 Overview Table 5-1. Actions Taken and Corresponding Adjustment in Order Actions Taken Step Corresponding adjustment required This chapter contains all adjustments procedure for Stylus C70/80. Turn on the printer, and make the ink out (cartridge out) error occur.
  • Page 139 EPSON Stylus COLOR C70/C80 Revision A Table 5-1. Actions Taken and Corresponding Adjustment in Order NOTE: (*1):Some of parts concerning paper feed system is, for example 1) PF motor, 2) PF roller, 3) one of gear on ASF. Actions Taken...

  • Page 140: Adjustment

    EPSON Stylus COLOR C70/C80 Revision A 5.2 Adjustment Click the "Model Name" frame, and select either Stylus C80 or Stylus C70. Click the "Interface" frame, and select your target interface port. This section describes the procedure for each adjustment. Be sure to observe the (Selectable ports are LPT1 to 3, and EPUSB1 to 3.)

  • Page 141: Head Id Input

    EPSON Stylus COLOR C70/C80 Revision A NOTE: If you select "Quit" button at this spot, printer starts performing the 5.2.2 Head ID Input initialization as same to first power on timing to reflect current RAM data This section describes how to input Head ID. Perform this operation under the...
  • Page 142 EPSON Stylus COLOR C70/C80 Revision A Select "Change data", and then OK button. Following screen appears. Following screen appears. Head ID Head ID Figure 5-6. "Head ID" Acceptance Screen Figure 5-5. "Head ID" input Screen NOTE: If you mistype the Head ID, adjustment program will automatically detect it, and indicates error message.

  • Page 143: Ink Charge

    EPSON Stylus COLOR C70/C80 Revision A 11. Press "Check present data". You can see your once typed Head IDs on the 5.2.3 Ink Charge following screen. This section describes how to perform ink charge. Perform this operation under the following conditions: For charging ink to the print head.

  • Page 144: Head Angle Adjustment

    Therefore, if you refer the current ink amount using status such as "Photo Quality Ink Jet Paper" or "Glossy Photo Paper". If you monitor, please once close the Epson printer driver, and then use use normal plain paper, you cannot judge and adjust the head angle the adjustment program continuously.
  • Page 145 EPSON Stylus COLOR C70/C80 Revision A Select "Printing the head angle pattern" and press "OK". Printer will start printing Now, you can see the following printing pattern. And printer is latching its printed with current head angle setting. During printing, following screen appears, and paper.
  • Page 146 EPSON Stylus COLOR C70/C80 Revision A NOTE: Actually, once you enter this adjustment mode, please complete the head JUDGEMENT STANDARD & HOW TO ADJUST HEAD ANGLE angle adjustment quickly to prevent the print head surface from dry. Especially, during CR is in the out of home position, do not stop your...
  • Page 147 EPSON Stylus COLOR C70/C80 Revision A Press "O.K." button on the current program screen (Figure 5-13). The screen changes as follows. 1. The ideal condition is that the upper lines and lower lines have to be divided equally each other.
  • Page 148 EPSON Stylus COLOR C70/C80 Revision A Once you set the adjust lever to your target position, push the front of yellow ink cartridge 2 or 3 times by your fingers or the screwdriver. Example Your target position Current lever position Current condition O.K.

  • Page 149: Bi-D Adjustment

    EPSON Stylus COLOR C70/C80 Revision A Check the printed pattern whether you can accept or not by referring Figure 5-14. 5.2.5 Bi-D Adjustment Program screen returns to Figure 5-10, and you can select either "Adjust the head This section describes how to make Bi-D (Bi-directional) adjustment. This adjustment angle"...
  • Page 150 EPSON Stylus COLOR C70/C80 Revision A NOTE: The following four items are adjusted with the Bi-D adjustment. A Bi-D adjustment pattern includes items shown in the sample in figure below. 1. Variable Sized Dot 1 (for 360<H> x 360<V> dpi printing)
  • Page 151 EPSON Stylus COLOR C70/C80 Revision A And following shows the 2 page pattern. Select "Adjust" and press "O.K." button in the current program screen. Following next screen appears. Variable 3 DOT Data = -16 Data = -16 Data = -14...

  • Page 152: Pf Adjustment

    EPSON Stylus COLOR C70/C80 Revision A Press "O.K." button on above screen after inputting all values. You can see all 5.2.6 PF Adjustment values that EEPROM has accepted and registered. This section describes how to make PF adjustment. This adjustment must be made under the following conditions.
  • Page 153 EPSON Stylus COLOR C70/C80 Revision A Select "Printing the "Printing the PF adjustment pattern", and press "O.K." button After the printing, you can see the following printed pattern. on the screen. Printer will start printing the PF adjustment pattern with reflecting current registered parameter.
  • Page 154 EPSON Stylus COLOR C70/C80 Revision A A PF adjust pattern is made by 2 blocks. And you need to select most right one By using up/down arrow key, change the present registered value to your actual without white banding or black banding. Following is the printer condition for confirmed value.

  • Page 155: Usb Id Readout (Checking)

    EPSON Stylus COLOR C70/C80 Revision A 5.2.7 USB ID Readout (Checking) 5.2.7.1 Possible to Readout the Original USB ID (CASE 1) Setup the adjustment program. Main screen (Figure 5-2) appears. This section describes how to readout/input the USB ID from/to the main board. This (Refer to Section 5.2.1.)
  • Page 156 EPSON Stylus COLOR C70/C80 Revision A Initial screen changes as below. 10. Following screen appears. Figure 5-35. USB ID/Serial Number Input Mode Figure 5-34. USB ID Readout Screen 11. Input the original USB IDs that you wrote-down at step 6, then press "O.K." on the program screen.

  • Page 157: Impossible To Readout The Original Usb Id (Case 2)

    EPSON Stylus COLOR C70/C80 Revision A 5.2.7.2 Impossible to Readout the Original USB ID (CASE 2) 5.2.8 EEPROM Initialization Setup the adjustment program. Main screen (Figure 5-2) appears. This section describes how to initialize the EEPROM, what kind of parameter will be (Refer to Section 5.2.1.)
  • Page 158 EPSON Stylus COLOR C70/C80 Revision A Following screen appears. Table 5-2. All Contents of EEPROM Initialization Initial After Setting Items Address Purpose Setting Initialize Contents CG Table PC 437 Previously, we input this value on the opening screen of the adjustment...

  • Page 159: Platen Gap Adjustment (Mechanism Adjustment)

    EPSON Stylus COLOR C70/C80 Revision A 5.2.9 Platen Gap Adjustment (Mechanism Adjustment) Place the thickness gauge around the right side of the front paper guide. (Specification: 1.35 mm) This section describes how to perform the platen gap adjustment. This adjustment must Place thickness Gauge be made under the following conditions.
  • Page 160 EPSON Stylus COLOR C70/C80 Revision A NOTE: Before you advance to next operation for the left side PG adjustment, note that following is the relationship between "PG adjust bushing START operation" and "platen gap reaction". Step 7 Left side frame Move the CR unit using timing belt.
  • Page 161 EPSON Stylus COLOR C70/C80 Revision A 13. Accede to following steps until you've completed the left side PG adjustment. 16. Accede to following steps to check right side PG again. START START Step 12 Move the CR unit using Move the CR unit using timing belt.

  • Page 162: Head Cleaning Operation

    EPSON Stylus COLOR C70/C80 Revision A 5.2.10 Head Cleaning Operation Press "O.K." button on the program screen. This section describes how to perform the cleaning that Stylus C70/C80 supports. The cleaning that the adjustment program supports is the powerful cleaning called CL3, and you can try recovering the clogged nozzle(s) efficiently.

  • Page 163: Protection Counter Clear (And Check)

    EPSON Stylus COLOR C70/C80 Revision A 5.2.11 Protection Counter Clear (and Check) Select "Clearing the protection counter", and press "O.K." button on the program screen. This section describes how to clear the protection counter. This operation must be done under the following conditions.

  • Page 164: Top Margin Adjustment

    EPSON Stylus COLOR C70/C80 Revision A NOTE: If you want to check the current protection counter, accede to following 5.2.12 Top Margin Adjustment steps. This section describes how to adjust the TOP margin. Basically, top margin adjustment On the Figure 5-50 screen, select "Checking the present protection counter", and is not required to your usual repair activity.
  • Page 165 EPSON Stylus COLOR C70/C80 Revision A Select "Checking the Top margin", and press "O.K." button on the program screen. Select "Adjust", and press "O.K." button. Following screen appears. Printer starts printing a top margin line printing. Following screen appears. Figure 5-57. Top Margin Adjustment Initial Screen Figure 5-55.

  • Page 166: First Dot Position Adjustment

    EPSON Stylus COLOR C70/C80 Revision A Select your decided value at step 6, and then press "O.K." button on the program 5.2.13 First Dot Position Adjustment screen. You can see following screen. NOTE: Functions not included in the specification have been removed from Rev.
  • Page 167 EPSON Stylus COLOR C70/C80 Revision A Select "Printing 1 dot position", and press "O.K." button on the program screen. Following screen appears. Printer starts printing a 1 dot position printing. Following screen appears during printing. Figure 5-63. 1 Dot Position Adjustment Screen Using right/left key, select out your expected value, then press "Write"...
  • Page 168 EPSON Stylus COLOR C70/C80 Revision A 10. Press "Previous" button to return the program screen to the initial screen as mentioned Figure 5-60. 11. Select "Printing 1 dot position", and press "O.K." button on the program screen. 12. Check your target position achieves or not.

  • Page 169: Chapter 6 Maintenance

    C H A P T E R MAINTENANCE...

  • Page 170: Overview

    EPSON Stylus COLOR C70/C80 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 171: Service Maintenance

    EPSON Stylus COLOR C70/C80 Revision A 6.1.2 Service Maintenance Maintenance Error Clear: Ink is used for the operations such as cleaning as well as printing. Therefore, the If print irregularity (missing dot, white line, etc.) has occurred or the printer indicates printer wastes certain amount of ink and drains it into waste ink pad, while “Maintenance Error”, take the following actions to clear the error.

  • Page 172: Lubrication And Adhesion

    The types lubricants used in the Stylus Color C70/C80 are specified by SEIKO be sure to clean the shaft and perform the preliminary EPSON. Lubricate the printer if necessary under the following conditions; lubrication before installing the shaft as described below: Oil has been wiped off during cleaning.

  • Page 173: Lubrication The Carriage Guide Shaft

    EPSON Stylus COLOR C70/C80 Revision A 6.1.4 Lubrication the Carriage Guide Shaft Using the dry cloth, completely wipe the inner surfaces of the 2 metallic bushings through which the carriage guide shaft is set. Especially, wipe well off black stains This section includes the procedure for lubricating the carriage guide shaft.
  • Page 174 EPSON Stylus COLOR C70/C80 Revision A Get 2 new oil pads, and 2 new “sub oil pads”. 13. Using the same syringe used in Step 9, supply "O-12" (0.49 - 0.53 cc) to the installed oil pad. To one of the new oil pads, supply ""O-12"" (0.5 cc) using the small syringe.
  • Page 175 EPSON Stylus COLOR C70/C80 Revision A Table 6-1. Oil Applied to the Stylus Color C70/C80 Table 6-3. Lubrication Points Using G-26 Type Name EPSON Code Supplier Lubrication Type/Point Remarks • Use a brush to apply it. Grease G-26 B702600001 EPSON <Lubrication Point>...
  • Page 176 EPSON Stylus COLOR C70/C80 Revision A Lubrication Type/Point Remarks Lubrication Type/Point Remarks • Use a injector to apply it. • Use a brush to apply it. <Lubrication Point> <Lubrication Point> • Lubrication must be along EJ • EJ Unit Roller along the EJ Grounding •...
  • Page 177 EPSON Stylus COLOR C70/C80 Revision A Lubrication Type/Point Remarks • Use a brush to apply it. <Lubrication Point> • The “shadow part” of Paper Back Lever Cam. Refer to Figure 6-20, "Lubrication point 13". <Lubrication Type> • G-26 <Lubrication Amount>...
  • Page 178 EPSON Stylus COLOR C70/C80 Revision A G-26 G-26 Figure 6-8. Lubrication point 1 Figure 6-10. Lubrication point 3 G-26 G-26 Figure 6-11. Lubrication point 4 Figure 6-9. Lubrication point 2 Maintenance Overview...
  • Page 179 EPSON Stylus COLOR C70/C80 Revision A G-26 G-26 Figure 6-12. Lubrication point 5 Figure 6-14. Lubrication point 7 G-26 G-26 Figure 6-15. Lubrication point 8 Figure 6-13. Lubrication point 6 Maintenance Overview...
  • Page 180 EPSON Stylus COLOR C70/C80 Revision A G-26 G-26 Figure 6-16. Lubrication point 9 Figure 6-18. Lubrication point 11 G-26 G-26 Figure 6-19. Lubrication point 12 Figure 6-17. Lubrication point 10 Maintenance Overview...
  • Page 181 EPSON Stylus COLOR C70/C80 Revision A G-26 G-26 Figure 6-20. Lubrication point 13 Figure 6-22. Lubrication point 15 G-26 Figure 6-21. Lubrication point 14 Maintenance Overview...

  • Page 182: Chapter 7 Appendix

    C H A P T E R APPENDIX...

  • Page 183: Connector Summary

    EPSON Stylus COLOR C70/C80 Revision A 7.1 Connector Summary Table 7-1. Connector Summary for C424 MAIN 7.1.1 Major Component Unit Connector Function Table to refer to Refer to Table 1-9 The Major component units of this printer are as follows.
  • Page 184 EPSON Stylus COLOR C70/C80 Revision A Table 7-2. CN8 - Print Head Table 7-2. CN8 - Print Head Signal Name Function Signal Name Function CSIC serial data GND2 Ground 2 Ground Head drive pulse (trapezoid waveform) Cartridge out signal GND2...
  • Page 185 EPSON Stylus COLOR C70/C80 Revision A Table 7-3. CN9 - Print Head Table 7-3. CN9 - Print Head Signal Name Function Signal Name Function Head drive pulse (trapezoid waveform) Ground Ground Print data output for color nozzles +42V for the common voltage...
  • Page 186 EPSON Stylus COLOR C70/C80 Revision A Table 7-7. CN19 - Power Supply Board Signal Name Function Ground Power on/off switch (CPU monitors) Logic power supply Logic power supply Ground Appendix Connector Summary...

  • Page 187: Eeprom Address Map

    EPSON Stylus COLOR C70/C80 Revision A 7.1.2 EEPROM Address Map Table 7-8. EEPROM Address Map (continued) QPIT Factory Table 7-8. EEPROM Address Map Address Explanation Setting setting settings QPIT Factory Address Explanation Setting Ink counter Cy Stylus Stylus setting settings...
  • Page 188 EPSON Stylus COLOR C70/C80 Revision A Table 7-8. EEPROM Address Map (continued) Table 7-8. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Setting Address Explanation Setting setting settings setting settings Ink flag1 Bit7: Disable CSIC Printing time Stylus...
  • Page 189 EPSON Stylus COLOR C70/C80 Revision A Table 7-8. EEPROM Address Map (continued) Table 7-8. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Setting Address Explanation Setting setting settings setting settings Ink seq. A counter CG table Stylus C70: 0 : Italic U.S.A.
  • Page 190 EPSON Stylus COLOR C70/C80 Revision A Table 7-8. EEPROM Address Map (continued) Table 7-8. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Setting Address Explanation Setting setting settings setting settings CG table Stylus C80: Page length 1244 to 44 x 360*...
  • Page 191 EPSON Stylus COLOR C70/C80 Revision A Table 7-8. EEPROM Address Map (continued) Table 7-8. EEPROM Address Map (continued) QPIT Factory QPIT Factory Address Explanation Setting Address Explanation Setting setting settings setting settings Bi-D adjustment for ECO -60 <= n <= +60 **...
  • Page 192 EPSON Stylus COLOR C70/C80 Revision A Table 7-8. EEPROM Address Map (continued) QPIT Factory Address Explanation Setting setting settings USB ID (*1) (*1) Reserved Custom EEPROM sub number Panel mask function Bit7: Entry Self-Test Bit6: Entry Hex-Dump Bit5: Extended settings...

  • Page 193: Csic Address Map

    EPSON Stylus COLOR C70/C80 Revision A 7.1.3 CSIC Address Map Table 7-9. CSIC Address Map (continued) Factory Table 7-9. CSIC Address Map Address Explanation Setting settings Factory Address Explanation Setting CSIC_B Open Effect Period (*1) settings CSIC_B Check ID (*1)
  • Page 194 EPSON Stylus COLOR C70/C80 Revision A Table 7-9. CSIC Address Map (continued) Table 7-9. CSIC Address Map (continued) Factory Factory Address Explanation Setting Address Explanation Setting settings settings CSIC_C Cartridge Name1 L (*1) CSIC_M Product Hour (*1) CSIC_C Cartridge Name1 H...
  • Page 195 EPSON Stylus COLOR C70/C80 Revision A Table 7-9. CSIC Address Map (continued) Table 7-9. CSIC Address Map (continued) Factory Factory Address Explanation Setting Address Explanation Setting settings settings CSIC_Y Install Printer (*1) Reserved (*1) Reserved (*1) CSIC_Y Product Company (*1)

  • Page 196: Component Layout

    EPSON Stylus COLOR C70/C80 Revision A 7.2 Component Layout Figure 7-2. C424 MAIN Component Layout (Parts Side) Figure 7-3. C424 MAIN-B Component Layout (Foil Side) Appendix Component Layout...
  • Page 197 EPSON Stylus COLOR C70/C80 Revision A Figure 7-5. C424 PSE Component Layout Figure 7-4. C424 PSB Component Layout Appendix Component Layout...

  • Page 198: Exploded Diagram

    EPSON Stylus COLOR C70/C80 Revision A 7.3 Exploded Diagram Following pages show exploded diagram. EPSON STYLUS C80 No.1 Rev.01 10336 Figure 7-6. Stylus Color C70/C80 Exploded Diagram 1 Appendix Exploded Diagram...
  • Page 199 EPSON Stylus COLOR C70/C80 Revision A EPSON STYLUS C80 No.2 Rev.01 10336 Figure 7-7. Stylus Color C70/C80 Exploded Diagram 2 Appendix Exploded Diagram...
  • Page 200 EPSON Stylus COLOR C70/C80 Revision A EPSON STYLUS C80 No.3 Rev.01 10336 Figure 7-8. Stylus Color C70/C80 Exploded Diagram 3 Appendix Exploded Diagram...
  • Page 201 EPSON Stylus COLOR C70/C80 Revision A Rev.01 10336 EPSON STYLUS C80 No.4 Figure 7-9. Stylus Color C70/C80 Exploded Diagram 4 Appendix Exploded Diagram...
  • Page 202 EPSON Stylus COLOR C70/C80 Revision A No.5 EPSON STYLUS C80 Rev.01 10336 Figure 7-10. Stylus Color C70/C80 Exploded Diagram 5 Appendix Exploded Diagram...
  • Page 203 EPSON Stylus COLOR C70/C80 Revision A 613 614 EPSON STYLUS C80 No.6 Rev.01 10336 Figure 7-11. Stylus Color C70/C80 Exploded Diagram 6 Appendix Exploded Diagram...
  • Page 204 EPSON Stylus COLOR C70/C80 Revision A 713 714 704 705 No.7 EPSON STYLUS C80 Rev.01 10336 Figure 7-12. Stylus Color C70/C80 Exploded Diagram 7 Appendix Exploded Diagram...
  • Page 205 EPSON Stylus COLOR C70/C80 Revision A EPSON STYLUS C80 No.8 Rev.01 10336 Figure 7-13. Stylus Color C70/C80 Exploded Diagram 8 Appendix Exploded Diagram...
  • Page 206 EPSON Stylus COLOR C70/C80 Revision A EPSON STYLUS C80 No.9 Rev.01 10336 Figure 7-14. Stylus Color C70/C80 Exploded Diagram 9 Appendix Exploded Diagram...
  • Page 207 EPSON Stylus COLOR C70/C80 Revision A EPSON STYLUS C80 No.10 Rev.01 10336 Figure 7-15. Stylus Color C70/C80 Exploded Diagram 10 Appendix Exploded Diagram...

  • Page 208: Parts List

    EPSON Stylus COLOR C70/C80 Revision A 7.4 Parts List Table 7-10. Stylus Color C70/C80 Parts List Code Parts Name SHIELDPATE, P/S,UPPER Table 7-10. Stylus Color C70/C80 Parts List COVER, CABLE Code Parts Name MOUNTING PLATE, AC INLET HOUSING, LOWER SHIELDPATE, P/S, LOWER COMPRESSION SPRING, 2.94...
  • Page 209 EPSON Stylus COLOR C70/C80 Revision A Table 7-10. Stylus Color C70/C80 Parts List Table 7-10. Stylus Color C70/C80 Parts List Code Parts Name Code Parts Name STARHWEEL, 8; B ROLLER ASSY., EJ HOLDER, STARWHEEL, EJ HOLDER, ROLLER ASSY., EJ FRAME, EJECT RETAINING RING (B150300711) C.B.S.
  • Page 210 EPSON Stylus COLOR C70/C80 Revision A Table 7-10. Stylus Color C70/C80 Parts List Table 7-10. Stylus Color C70/C80 Parts List Code Parts Name Code Parts Name CABLE, HEAD C.B.S. SCREW (B300204211) SPACER, 4.1 X 0.5, L/NA C.P. SCREW, 3 X 4, F/ZN...
  • Page 211 EPSON Stylus COLOR C70/C80 Revision A Table 7-10. Stylus Color C70/C80 Parts List Table 7-10. Stylus Color C70/C80 Parts List Code Parts Name Code Parts Name CAM, LEVER, LOCK HOLDER, ASF, MIDDLE HOLDER, LEVER, ROCK FRAME, ASF, LOWER TORSIONBAR, HOPPER TORSION SPRING, 66.1...
  • Page 212 EPSON Stylus COLOR C70/C80 Revision A Table 7-10. Stylus Color C70/C80 Parts List Code Parts Name PAD SET, PRINTER PAD, ACCESSORY PLASTIC PROTECTIVE BAG, 500 X 850 X 0.03T Appendix Parts List...

  • Page 213: Electrical Circuits

    EPSON Stylus COLOR C70/C80 Revision A 7.5 Electrical Circuits The electric circuit diagrams below are shown at the following pages: C424 MAIN-B control circuit board C424 PSB power supply circuit board C424 PSE power supply circuit board Appendix Electrical Circuits...

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