Epson Stylus-500 Service Manual
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Epson Stylus-500 Service Manual

Color inkjet printer
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EPSON COLOR INKJET PRINTER
Stylus-500
SERVICE MANUAL
EPSON
4006359

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Summary of Contents for Epson Stylus-500

  • Page 1 EPSON COLOR INKJET PRINTER Stylus-500 SERVICE MANUAL EPSON 4006359...
  • Page 2 This document provides supplementary information to describe the EPSON Stylus COLOR 500, which is a follow-on version of the EPSON Stylus COLOR II. Therefore, you must refer to this information in conjunction with the EPSON Stylus COLOR II Service Manual for details on any subjects common to both printers.
  • Page 3 EPSON Stylus COLOR 500 Service Manual Product Description 1.1 FEATURES The EPSON Stylus COLOR 500 is a small-footprint, personal-use color ink jet printer. The major new features of this printer are: Newly developed black and color inks High-quality black printing...

  • Page 4: Specifications

    Product Description EPSON Stylus COLOR 500 Service Manual 1.2 SPECIFICATIONS This section provides detailed information about the EPSON Stylus COLOR 500. 1.2.1 Printing Specification Table 1-2. Character Tables and Typefaces Bitmap fonts Scalable fonts EPSON Roman EPSON Sans Serif EPSON...

  • Page 5: Hardware Interfaces

    EPSON Stylus COLOR 500 Service Manual Product Description 1.3 INTERFACES 1.3.1 Hardware Interfaces This section fully describes the EPSON Stylus COLOR 500 interfaces. The printer offers both a parallel and serial interface, standard. 1.3.1.1 Parallel Interface Forward Channel Transmission mode:...
  • Page 6 Product Description EPSON Stylus COLOR 500 Service Manual Table 1-4 shows the connector pin assignments and signals for the 8-bit parallel interface. Table 1-3. Connector Pin Assignments and Signals (Forward Channel) Return Pin No. Signal Name Description GND Pin This is strobe pulse. Reading of data is STROBE performed at the falling edge of this pulse.

  • Page 7: Reverse Channel

    EPSON Stylus COLOR 500 Service Manual Product Description Reverse Channel Transmission mode: IEEE-1284 nibble mode. Connector: See forward channel. Synchronization: Refer to the IEEE-1284 specification. Handshaking: Refer to the IEEE-1284 specification. Data transmission timing: Refer to the IEEE-1284 specification. Signal level: Refer to the IEEE-1284 specification.
  • Page 8 Product Description EPSON Stylus COLOR 500 Service Manual Extensibility The printer responds affirmatively when the extensibility request values are 00H or 04H. Request That means: 00H: Request Nibble Mode Reverse Channel Transfer 04H: Request Device ID; Return Data Using Nibble Mode Channel Transfer.

  • Page 9: Power Switch

    EPSON Stylus COLOR 500 Service Manual Product Description 1.4 POWER AND CONTROL PANEL OPERATIONS This section describes the controls used to operate the EPSON Stylus COLOR 500. 1.4.1 Power Switch The Power switch is in the right rear corner of the printer.

  • Page 10: Paper Out

    Product Description EPSON Stylus COLOR 500 Service Manual Indicators Power Lights when the printer’s Power switch is On, and AC power is supplied. Ink Out (Black) Lights when there is no ink in the black ink cartridge, and blinks when the black ink cartridge is low.

  • Page 11: Panel Functions At Power On

    EPSON Stylus COLOR 500 Service Manual Product Description 1.4.3 Panel Functions at Power On The table below gives functions for different button combinations at power on. Table 1-5. Panel Functions at Power On Button Pressed along with Power On Cleaning (Black) Starts demonstration print.

  • Page 12: Printer Conditions And Status

    Product Description EPSON Stylus COLOR 500 Service Manual 1.4.4 Printer Conditions and Status This section describes how the printer indicates status and error conditions using LEDs. Table 1-6. Indicator Status LEDs Printer Status Ink Out Ink Out Paper Power (Black)

  • Page 13: Product Description

    EPSON Stylus COLOR 500 Service Manual Product Description 1.4.5 Default Settings This printer has user-selectable default settings, which it refers to at initialization. The default (and factory) settings are listed in the table on the next page. 1.4.5.1 Setting Method The method of setting defaults is shown in the flowchart below.

  • Page 14: Setting Menus

    Product Description EPSON Stylus COLOR 500 Service Manual 1.4.5.2 Setting Menus The default setting menus are: Table 1-7. Default Settings Settings Menus (Underlines Indicate Factory Default Settings) Print direction Auto / Bi-D / Uni-D Roman / Sans Serif / Courier / Prestige / Script / Roman T /...

  • Page 15: Ink Cartridge Specifications

    EPSON Stylus COLOR 500 Service Manual Product Description 1.5 INK CARTRIDGE SPECIFICATIONS Black Type Exclusive cartridge Model S020093 Color Black Print capacity 620 pages / A4 (LQ Roman EQMA text) Ink Life 2 years from production 20 °C ~ 40 °C (–4° F ~ 104° F) Storage temperature Storage, less than a month at 40 °C (104°...

  • Page 16: Main Components

    Product Description EPSON Stylus COLOR 500 Service Manual 1.6 MAIN COMPONENTS The main components of the EPSON Stylus COLOR 500 are designed for easy removal and repair. The main components are: Main Board (C161 MAIN) Power Supply Board (C160 PSB/PSE)

  • Page 17: Operating Principles Of The Printer Mechanism

    EPSON Stylus COLOR 500 Service Manual Operation Principles 2.1 OVERVIEW This section describes operating principles of the EPSON Stylus COLOR 500 printer mechanism and electrical circuits. 2.2 OPERATING PRINCIPLES OF THE PRINTER MECHANISM 2.2.1 Principles of the Printing Operation The printhead operates in one of two modes to eject ink from each nozzle:...

  • Page 18: Operating Principles Of The Electrical Circuits

    EPSON Stylus COLOR 500 Service Manual 2.3 OPERATING PRINCIPLES OF THE ELECTRICAL CIRCUITS The EPSON Stylus COLOR 500 contains the following circuit board units: C161 MAIN / C198 MAIN Board (main control circuit board) C160 PSB/PSE Board (power supply circuit board). This board is the same as for the Stylus COLOR.

  • Page 19: Operation Principles

    EPSON Stylus COLOR 500 Service Manual Operation Principles 2.3.1.1 Printhead Driver Circuit The printhead driver circuit for this printer is composed of the following two parts: Common driver circuit (trapezoidal drive pulse generation) Head driver circuit (nozzle control built on the printhead) The SED6100D0A/SED6110D0A monochrome printhead driver circuit for the 64-dot head on the carriage acts as a nozzle selector to drive the black printhead nozzles selectively.

  • Page 20: Ink System Management

    Operating Principles EPSON Stylus COLOR 500 Service Manual 2.4 INK SYSTEM MANAGEMENT The ink system is controlled to protect the printhead and ink supply system and ensure high-quality output. 2.4.1 Counter EEPROM 93C46 (IC11) on the main board stores certain counter and timer values used for controlling ink system operation.

  • Page 21: Precautions For Disassembling The Printer

    EPSON Stylus COLOR 500 Service Manual Disassembly and Assembly 3.1 OVERVIEW This section describes procedures for disassembling the main components of the printer. Unless otherwise specified, disassembled units or components can be reassembled by reversing disassembly procedures, so no assembly procedures are included. Precautions for any disassembly or assembly procedure are described under the heading “Disassembly/Assembly Points”.

  • Page 22: Disassembly And Assembly

    Appendix, if necessary. 3.2.1 ASF (Auto Sheet Feeder) Assembly Removal Remove the upper housing assembly. (See EPSON Stylus COLOR II Service Manual, Section 3.2.1.) Disconnect the PS sensor cable from connector CN11 on the C161 / C198 MAIN board. Remove 2 CBS (3x8) screws, a plain washer, and a spacer securing the ASF assembly to the base frame.

  • Page 23: Black Head Removal

    3.2.2 Black Head Removal CAUTION Although the EPSON Stylus COLOR 500’s printhead is not compatible with the printhead for the Stylus COLOR II, either printhead can fit in the other printer physically. So, take care not to misassemble the printer with the wrong printhead.
  • Page 24 The carriage unit must be moved to carriage home position and fixed to the base frame with the CR clamp so that it does not move during transport. (See EPSON Stylus COLOR II Service Manual, Section 3.2.10.) Otherwise, the carriage may receive permanent damage.

  • Page 25: Color Head Removal

    Disassembly and Assembly 3.2.3 Color Head Removal Remove the upper housing assembly. (See EPSON Stylus COLOR II Service Manual, Section 3.2.1.) Push the head fastening lever back, and remove the color printhead with the color ink cartridge up. Disconnect the color head cable from the color printhead.
  • Page 26 The carriage unit must be moved to carriage home position and fixed to base frame with the CR clamp so that it does not move during transport. (See EPSON Stylus COLOR II Service Manual, Section 3.2.10.) Otherwise, the carriage may receive permanent damage.

  • Page 27: Printer Mechanism Removal

    Remove the pump unit. (See EPSON Stylus COLOR II Service Manual, Section 3.2.6.1.) Remove the carriage unit. (See EPSON Stylus COLOR II Service Manual, Section 3.2.6.5.) Remove the lower paper guide assembly. (See EPSON Stylus COLOR II Service Manual, Section 3.2.6.6.) Remove the grounding spring connecting between the M/B shield plate and PF drive roller assembly on the left side of the printer.
  • Page 28 2. Bi-D alignment adjustment (See EPSON Stylus COLOR II service After disassembling or manual, Section 4.1.6.) replacing parts in the 3. Black - color head vertical adjustment (See EPSON Stylus COLOR II printer mechanism service manual, Section 4.1.7.) 4. Head gap adjustment (See EPSON Stylus COLOR II service manual, Section 4.1.8.)
  • Page 29 4. Bi-D alignment adjustment (See EPSON Stylus COLOR II service manual Section 4.1.6.) color and black heads 5. Black - color head vertical adjustment (See EPSON Stylus COLOR II service manual Section 4.1.7.) 6. Head gap adjustment (See EPSON Stylus COLOR II service manual Section 4.1.8.)
  • Page 30 Load BASIC on the PC, and run the program. Load 720 dpi paper into the printer. Then the main menu appears as shown below: EPSON STYLUS COLOR 500 Adjustment Program Customer data <> **/**/** ( Customer data input ) ..1 ( Adjustment/Print Inspection ) ..
  • Page 31 Adjustment EPSON Stylus COLOR 500 Service Manual Choose 2 to enter the adjustment mode. The adjustment select menu appears as follows: EPSON STYLUS COLOR 500 Adjustment Program Rev. x Customer : Customer data <xxx> 0. Initial Ink Charge 1. Head Voltage Values 2.
  • Page 32 Load BASIC on the PC and run the program. Load 720 dpi paper into the printer. Then the main menu appears, as shown below: EPSON STYLUS COLOR 500 Adjustment Program Customer data <> **/**/** ( Customer data input ) ..1 ( Adjustment/Print Inspection ) ..
  • Page 33 Adjustment EPSON Stylus COLOR 500 Service Manual Press 1 to begin writing the printhead data (head voltage values). The display for entering the head voltage values appears. Refer to the printhead circuit boards to enter the appropriate values. (See the illustration below.)
  • Page 34 Load BASIC on the PC and run the program. Load 720 dpi paper into the printer. Then the main menu appears, as shown below: EPSON STYLUS COLOR 500 Adjustment Program Customer data <> **/**/** ( Customer data input ) ..1 ( Adjustment/Print Inspection ) ..
  • Page 35 Adjustment EPSON Stylus COLOR 500 Service Manual Press 6 to choose the head data indication function. The printer prints out head data as followings, and the adjustment select menu appears again. For example Printed data is as followings; Rev. X <***> VH:04232001 Referring to later translation tables, Rev.
  • Page 36 EPSON Stylus COLOR 500 Service Manual Adjustment Table 4-4. Black VH1 / VH2 Indication Head Voltage Indication Head Voltage 18.27 27.70 18.57 27.99 18.86 28.28 19.16 28.58 19.45 28.87 19.74 29.17 20.04 29.46 20.33 29.76 20.63 30.05 20.92 30.35 21.22 30.64...
  • Page 37 Adjustment EPSON Stylus COLOR 500 Service Manual Table 4-5. Color Head Drive Voltage Indication ID 4 ID 3 ID 2 ID 1 4-10 Rev.B...

  • Page 38: Preventive Maintenance

    EPSON Stylus COLOR 500 Service Manual Maintenance 6.1 PREVENTIVE MAINTENANCE Although this printer is designed so that no specific maintenance is required on a regular basis, it is recommended that you clean the printer thoroughly whenever you get a chance to do so. You can clean: Outer case Use a soft, clean cloth, dampened with mild detergent, if necessary.

  • Page 39: Service & Maintenance

    Maintenance EPSON Stylus COLOR 500 Service Manual 6.2 SERVICE MAINTENANCE Certain maintenance is required when the printer detects an error or when you observe a decline in print quality. 6.2.1 Printhead Cleaning If print quality deteriorates, clean the printhead using the built-in printhead cleaning function. The printer also has an automatic printhead cleaning cycle to ensure the proper nozzle operation for ink ejection as well as to preserve its best condition.

  • Page 40: Lubrication And Adhesives

    The printer must be lubricated properly when the printer is disassembled for component replacement, or if the mechanical noise exceeds a certain level. EPSON recommends only the lubricants listed in table below for this printer, both of which have been tested extensively and found to comply with the requirements of this printer mechanism.
  • Page 41 Maintenance EPSON Stylus COLOR 500 Service Manual Carriage Unit M/B Shield Plate PG Lever Base Frame Figure 6-1. Lubrication Points and Adhesive Points (1) Rev.A...
  • Page 42 EPSON Stylus COLOR 500 Service Manual Maintenance Carriage Unit Base Frame Figure 6-2. Lubrication Points and Adhesive Points (2) Rev.A...

  • Page 43: Connector Summary

    EPSON Stylus COLOR 500 Service Manual Appendix A.1 CONNECTOR SUMMARY The figure below shows the interconnection between the major components of the EPSON Stylus COLOR 500. C160 PSB/PSE AC Input Carriage Unit CN10 Parallel I/F Black Color HP Sensor C161 MAIN...
  • Page 44 EPSON Stylus COLOR 500 Service Manual Appendix Figure A-4. C160 PSB Board Circuit Diagram Rev.B...
  • Page 45 Appendix EPSON Stylus COLOR 500 Service Manual Figure A-5. C160 PSE Board Circuit Diagram Rev.A...
  • Page 46 EPSON Stylus COLOR 500 Service Manual Appendix Figure A-6. C160 PSE (Korean) Board Circuit Diagram Rev.B...
  • Page 47 Appendix EPSON Stylus COLOR 500 Service Manual +5 V +5 V +5 V LED11 LED10 LED9 LED8 GREEN LED0 LED1 N O T MO U N TE D LED7 LED2 NOT MOUN TED LED6 LED3 N O T MO U N TE D...

  • Page 48: Exploded Diagrams

    EPSON Stylus COLOR 500 Service Manual Appendix A.3 EXPLODED DIAGRAMS 156 .2 Units : mm Figure A-8. EPSON Stylus COLOR 500 Outline Drawing Rev.B A-11...

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