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Epson FX-880 Service Manual

Fx-880; fx-1180
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Service Manual
FX-880/FX-1180
Epson America, Inc.
TM-FX88/1180

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Summary of Contents for Epson FX-880

  • Page 1 Service Manual FX-880/FX-1180 Epson America, Inc. TM-FX88/1180...

  • Page 2: Service Manual

    EPSON FX-880/FX-1180 Service Manual Revision Date Release August 1998 EPSON FX-880/FX-1180 Service Manual...

  • Page 3: Table Of Contents

    Table of Contents 1. Product Description ................1-1 2. Operating Principles ................2-1 3. Disassembly and Assembly..............3-1 4. Adjustments ...................4-1 5. Troubleshooting..................5-1 6. Maintenance...................6-1 7. Appendix ....................A-1 EPSON FX-880/FX-1180 Service Manual...
  • Page 4 EPSON FX-880/FX-1180 Service Manual...
  • Page 5 The EPSON FX-880 and EPSON FX-1180 are identical products, except for their width. To permit printing on wider paper, the FX-1180 has a wider body than the FX-880, but is the same as the FX-880 in all other respects. Unless noted otherwise, all information and instructions in this manual can be used to service either printer.
  • Page 6 EPSON FX-880/FX-1180 Service Manual...

  • Page 7: Fcc Compliance Statement

    Epson America, Inc., assumes no responsibility for errors and omissions. Neither Epson America, Inc., nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product.
  • Page 8 ESC/P 2 , EPSON FX-880 , and EPSON FX-1180 trademarks of Seiko Epson Corporation. Epson Connection is a service mark of Epson America, Inc. General Notice: Other product names used herein are for identification purposes only and may be trademarks of their respective companies.
  • Page 9 2. Make certain that the source voltage is the same as the rated voltage listed on the serial number/rating plate. If the EPSON product has a primary AC rating different from the available power source, do not connect it to the power source.

  • Page 10: Product Description

    Tear-off Function........................1-22 Changing the Default Settings ..................... 1-23 Bidirectional Adjustment Function ..................1-25 Printer States and Error Reporting......................1-27 Initialization ............................1-27 Error Conditions..........................1-27 Conditions Indicated by the LEDs and Beeper ................1-28 Main Components............................ 1-29 EPSON FX-880/FX-1180 Service Manual...
  • Page 11 Product Descriptions 1-ii EPSON FX-880/FX-1180 Service Manual...

  • Page 12: Features

    Product Description Features The EPSON FX-880 and FX-1180 are small-footprint, 9-pin serial impact dot matrix printers. Except for their width, the two printers are exactly the same. The FX-1180 has a wider carriage unit and paper handling mechanism, and prints on wider paper than the FX-880.
  • Page 13 One standard bidirectional, 8-bit, parallel interface with IEEE-1284 nibble mode support, and one optional Type B level 2 interface slot Control codes ESC/P and IBM 2380 Plus (for the FX-880) or 2381 Plus (for the FX-1180) character emulation Copy capability 1 original + 5 copies Figure 1-1.

  • Page 14: Accessories

    32KB type-B intelligent serial I/F card C823071 C823071 Coax type-B I/F card C823141 C823141 Twinax type-B I/F card C823151 C823151 Multi-protocol Ethernet type-B I/F card C823572 C823572 Bi-directional parallel type-B I/F card C823452 C823452 LocalTalk I/F card C823121 C823121 EPSON FX-880/FX-1180 Service Manual...

  • Page 15: Hardware Specifications

    Product Description Hardware Specifications This section describes the hardware specifications of the FX-880 and FX-1180. Printing Method Printing method Impact dot matrix Number of pins 9 pins Pin arrangement Pin diameter 0.0114 inch (0.29 mm) Print color Black Print direction Bidirectional logic seeking when printing text and graphics.

  • Page 16: Paper Handling Specifications

    25 plain or bond envelopes up to 30 airmail envelopes Note: The total thickness of the paper stack can be up to 0.59 inches (15 mm). Line spacing 1/6 inch or programmable in increments of 1/216 inch EPSON FX-880/FX-1180 Service Manual...
  • Page 17 Paper Thickness (inches) Paper Thickness (mm) Minimum Maximum Minimum Maximum 0.0024 0.0047 0.065 0.12 0.0047 0.0075 0.12 0.19 0.0075 0.0102 0.19 0.26 0.0102 0.0126 0.26 0.32 0.0126 0.0142 0.32 0.36 0.0142 0.0157 0.36 0.40 0.0157 0.0205 0.40 0.52 EPSON FX-880/FX-1180 Service Manual...

  • Page 18: Paper Specifications

    The minimum left and right margins are 0.12 inch (3 mm). The maximum printable width is 8 inches (203.2 mm) for the FX-880 and 13.6 inches (345.4 mm) for the FX-1180. Figure 1-2. Margins for Cut Sheets EPSON FX-880/FX-1180 Service Manual...

  • Page 19: Envelopes

    14 to 22 lb (52 to 82 g/m Weight (multi-part) 12 to 15 lb (40 to 58 g/m Plain paper, recycled paper, carbonless multi-part Quality Apply small dots of glue, or paper staple (crimp) both the right and left sides. Joining EPSON FX-880/FX-1180 Service Manual...
  • Page 20 The minimum left and right margins are 0.51 inch (13 mm). The maximum printable width is 8 inches (203.2 mm) for the FX-880 and 13.6 inches (345.4 mm) for the FX-1180. Figure 1-5. Margins for Continuous Paper EPSON FX-880/FX-1180 Service Manual...

  • Page 21: Roll Paper

    The minimum top and bottom margins are 0.17 inch (4.2 mm). The minimum left and right margins are 0.12 inch (3 mm). The maximum printable width is 8 inches (203.2 mm) for the FX-880 and 13.6 inches (345.4 mm) for the FX-1180. Figure 1-6. Margins for Roll Paper Ribbon Cartridge Table 1-14.

  • Page 22: Electrical Specifications

    Product Description Electrical Specifications Electrical specifications for the FX-880 and FX-1180 depend on both the model and the type of power supply it contains: Table 1-15. Electrical Specifications for the 120 V Version Item Specification Rated voltage 120 VAC Input voltage range 103.5 to 132 VAC...

  • Page 23: Reliability

    Relative Humidity 10 to 80%, operating *1, *2 30 to 60%, operating 0 to 85%, storage Notes: 1. Without condensation. 2. During printing on envelopes, card stock, labels, multi-part forms, roll paper, or recycled paper. 1-12 EPSON FX-880/FX-1180 Service Manual...

  • Page 24: Safety Approvals

    Product Description Safety Approvals The FX-880 and FX-1180 have met the following safety approvals: Table 1-20. Safety Information Version Safety Standards 120 V UL 1950 with D3, FCC part 15 subpart B class B, CSA C108.8 class B CSA C22.2 No. 950...

  • Page 25: Firmware Specifications

    Product Description Firmware Specifications This section provides detailed information about firmware for the FX-880 and FX-1180. Control Codes and Fonts Control codes ESC/P 2 and IBM 2380/2381 Plus character emulation Typefaces Bit map fonts EPSON Draft 10 cpi, 12 cpi, 15 cpi...

  • Page 26: Interface Specifications

    Product Description Interface Specifications The FX-880 and FX-1180 provide a bidirectional 8-bit parallel interface and a Type-B optional interface slot as standard. Parallel Interface (Forward Channel) Transmission mode 8 bit parallel, IEEE-1284 compatibility mode Adaptable connector 57-30360 (AMPHENOL) or equivalent...
  • Page 27 The PE signal is active HIGH under the following conditions: If there is a paper-out error DATA (n+1) DATA (n) DATA hold STROBE nex t setup BUSY ready bus y ACKNLG reply nbusy Figure 1-7. Data Transmission Timing 1-16 EPSON FX-880/FX-1180 Service Manual...

  • Page 28: Parallel Interface (Reverse Channel)

    IEEE-1284 nibble mode Adaptable connector 57-30360 (Amphenol) or equivalent Synchronization Refer to the IEEE-P1284 specification Handshaking Refer to the IEEE-P1284 specification Signal Level IEEE-1284 level 1 device TTL compatible Data transmission timing Refer to the IEEE-1284 specification 1-17 EPSON FX-880/FX-1180 Service Manual...

  • Page 29: Interfaces

    * In/Out refers to the direction of signal flow from the printer’s point of view. Interfaces The FX-880 and FX-1180 include one built-in parallel interface card and one built-in card slot. The card slot accepts a variety of Type-B optional interface cards, as indicated by the table below.

  • Page 30: Interface Selection

    Data transfer may then slow to as little as a few bytes per minute, with the printer registering a busy state only if the input buffer fills completely. 1-19 EPSON FX-880/FX-1180 Service Manual...

  • Page 31: Control Panel Operation

    Product Description Control Panel Operation This section tells how to use the FX-880 and FX-1180 control panel. Control Panel The printer control panel contains four non-lock-type pushbuttons and one lock-type power button, as well as various LEDs to report on printer functions.

  • Page 32: Operation At Power-On

    When the printer is in the default setting mode, the panel buttons perform the functions shown below. Table 1-29. Operation in Default Setting Mode Buttons Function Tear Off/Bin Selects the setting to be adjusted from a printed menu. Load/Eject Changes the setting’s value. 1-21 EPSON FX-880/FX-1180 Service Manual...

  • Page 33: Details Of Selected Functions

    Auto tear-off has been set to OFF in the default settings. The release lever has been set to one of the tractor positions. The printer is off-line; or, if the printer is on-line, the data buffer is empty. 1-22 EPSON FX-880/FX-1180 Service Manual...

  • Page 34: Changing The Default Settings

    Default settings are special settings stored in the printer’s EEPROM which remain active even after turning off the printer. The FX-880 and FX-1180 both have two default setting modes. You can change different printer settings in each of these modes.
  • Page 35 Push the Load/Eject switch to select a different language. Finished? Push the Tear off/Bin switch. Turn the printer off to save the settings. The default settings menu and selection guide are printed. Figure 1-10. Changing Default Settings (Mode 2) 1-24 EPSON FX-880/FX-1180 Service Manual...

  • Page 36: Bidirectional Adjustment Function

    With a stand-alone printer, enter the bidirectional adjustment mode by pressing the Pause button while turning on the printer; the flowchart on the next page outlines this procedure. 1-25 EPSON FX-880/FX-1180 Service Manual...
  • Page 37 Load/Eject selects a higher-numbered print pattern, and LF/FF selects a lower-numbered one. Finalize your selection by pressing the Tear Off/Bin switch, and the next alignment pattern prints. Figure 1-11. Bidirectional Adjustment 1-26 EPSON FX-880/FX-1180 Service Manual...

  • Page 38: Printer States And Error Reporting

    Paper out, paper jam, or paper eject error Release lever operation error (detected when the position of the release lever does not match the paper path) Carriage control, power supply voltage, or CG access error 1-27 EPSON FX-880/FX-1180 Service Manual...

  • Page 39: Conditions Indicated By The Leds And Beeper

    Indicates a beep lasting 100 ms followed by 100 ms of silence. Indicates a beep lasting 500 ms followed by 100 ms of silence . Indicates that the LED or beeper is not used to indicate this condition. 1-28 EPSON FX-880/FX-1180 Service Manual...

  • Page 40: Main Components

    Product Description Main Components The main components of the FX-880 and FX-1180 are designed for easy removal and repair. The main components include the following: C229 MAIN Board Assembly C229 PSB/PSE/PSH Board Assembly C229 PNL Board Assembly Printer Mechanism (M-3J10)

  • Page 41: Operating Principles

    Paper Handling Mechanisms ......................2-4 Paper Paths........................... 2-5 Ribbon Advance Mechanism......................2-9 Platen Gap Adjustment Mechanism ....................2-11 Paper Feed Motor..........................2-11 Circuit Operation............................2-12 Power Supply – Circuit Types......................2-12 Power Supply Operation...................... 2-12 Control Circuit..........................2-14 EPSON FX-880/FX-1180 Service Manual...
  • Page 42 Operating Principles 2-ii EPSON FX-880/FX-1180 Service Manual...

  • Page 43: Printer Mechanism Operation

    Operating Principles Printer Mechanism Operation This section describes the FX-1180 and FX-880 printer mechanism, which features a 9-pin serial impact dot matrix printhead. The printer mechanism consists of the following parts: Printhead Carriage unit Paper handling mechanisms Ribbon advance mechanism...

  • Page 44: Printhead

    The printhead transfers ink to the printed page by means of 9 wires which strike the ink ribbon as the printhead travels across the page. Each wire has its own drive coil that is actuated by a separate signal from the printhead drive circuitry. Figure 2 depicts one of the nine independent drive coil mechanisms. EPSON FX-880/FX-1180 Service Manual...
  • Page 45 Voltage changes reflecting changes in the thermistor’s resistance are output to the CPU. Should the printhead overheat, the CPU detects this and automatically stops printing until the printhead cools. Pivot Figure 2. Printhead Drive Coil Mechanism EPSON FX-880/FX-1180 Service Manual...

  • Page 46: Carriage Unit

    This lets the main logic board know what type of paper is loaded and how many lines to print per page. (Cut sheets print at 61 lines per page, while continuous paper prints at 66 lines per page.) EPSON FX-880/FX-1180 Service Manual...

  • Page 47: Paper Paths

    When the rear entrance is used, the rear PE sensor senses when paper is out. Figure 5. Paper Path for Push Tractor Feeding Using the Rear Entrance EPSON FX-880/FX-1180 Service Manual...
  • Page 48 Operating Principles Figure 6. Paper Path for Pull Tractor Feeding Using the Rear Entrance Figure 7. Paper Path for Push-Pull Tractor Feeding Using the Rear Entrance EPSON FX-880/FX-1180 Service Manual...
  • Page 49 When the front entrance is used, the front PE sensor senses when paper is out. Figure 9. Paper Path for Friction Feeding Using the Front Entrance EPSON FX-880/FX-1180 Service Manual...
  • Page 50 Operating Principles Figure 10. Paper Path for Push Tractor Feeding Using the Front Entrance Figure 11. Paper Path for Pull Tractor Feeding Using the Front Entrance EPSON FX-880/FX-1180 Service Manual...

  • Page 51: Ribbon Advance Mechanism

    To make the ribbon feed in one direction only, the timing belt connects to a specially designed gear linkage which always turns the ribbon advance roller counterclockwise, no matter which direction the printhead is moving. EPSON FX-880/FX-1180 Service Manual...
  • Page 52 “grab” the ribbon and draw it in. The ribbon brake spring, attached to the exit slot of the cartridge case, prevents slack in the ribbon and keeps its tension at a constant level. Finally, the ribbon mask prevents the ribbon from brushing against the paper. 2-10 EPSON FX-880/FX-1180 Service Manual...

  • Page 53: Platen Gap Adjustment Mechanism

    PFA to PFB are turned on or off within the PA1476H (IC1), depending on the phase data sent from the CPU. When pin A19 of the CPU goes HIGH, D1 outputs +35 volts to hold the motor stationary. 2-11 EPSON FX-880/FX-1180 Service Manual...

  • Page 54: Circuit Operation

    Power Supply – Circuit Types The FX-1180 and FX-880 printers can be powered by any of three power supply boards: the C229 PSB board (120 V), the C229 PSE board (230 V), or the C229 PSH board (UPS). The output of these boards supplies the DC current necessary to drive the printer control circuits and the printer drive mechanism.
  • Page 55 The following figure shows the power supply circuitry in block diagram form. ZC-RCC Switching AC input Line Filter +35 VDC Overcurrent Overvoltage Regulator IC +5VDC Regulator Figure 15. Power Supply Circuit Block Diagram Figure 16. Power Supply Board Component Layout (C229 PSB/PSE/PSH) 2-13 EPSON FX-880/FX-1180 Service Manual...

  • Page 56: Control Circuit

    Operating Principles Control Circuit The C229 MAIN board is the control circuit board for the FX-1180 and FX-880. The control circuit includes a TM96C141AF CPU that runs at 14.47 MHz, an E05B50 gate array that contains various memory management functions, a reset IC, EEPROM, etc. The table below shows the functions of the main board components.
  • Page 57 Parallel I/F E05B50 TMP96C141AF Reset IC (IC2) (IC3) Front PE Sensor EEPROM Type B I/F (Optional) HP Sensor Release Lever Sensor PF Motor CR Motor Driver Driver 35 V Sensor Figure 17. Control Circuit Block Diagram 2-15 EPSON FX-880/FX-1180 Service Manual...
  • Page 58 This is shown in the diagram below: Figure 18. Data Flow PF Motor Driver IC CR Motor Drive IC Gate array E05B50 PSRAM Print Head Driver PROM EEPROM Figure 19. MAIN Board Component Layout (C229) 2-16 EPSON FX-880/FX-1180 Service Manual...

  • Page 59: Disassembly And Assembly

    PG (Platen Gap) Sensor Removal................. 3-24 Release Lever Sensor Removal ..................3-25 Front PE (Paper End) Sensor Removal................. 3-26 Rear PE Sensor Removal....................3-27 Carriage Removal ......................3-28 Rear Paper Guide Removal................... 3-30 Ribbon Drive Removal ....................3-32 ESPON FX-880/FX-1180 Service Manual...
  • Page 60 Disassembly and Assembly 3-ii ESPON FX-880/FX-1180 Service Manual...

  • Page 61: Overview

    This chapter describes procedures for disassembling the EPSON FX-880 and FX-1180. Unless otherwise specified, you can assemble the components by reversing the disassembly procedures. Printer Disassembly Precautions When working on the EPSON FX-880 or FX-1180, follow the warnings and cautions below. WARNING Disconnect the power cable before opening the printer case.

  • Page 62: Tools

    Thickness gauge (t=0.42 mm) Commercially available B776702201 Multimeter Commercially available Oscilloscope (50 MHz min.) Commercially available Extractor (for removing rivet in PSB) EPSON part EXTRACTOR Note: An oscilloscope is required only for making repairs at the component level. ESPON FX-880/FX-1180 Service Manual...

  • Page 63: Service Checks After Repair

    Check that the printer has the latest Checked Not necessary ROM version. Packing Ribbon Has the ribbon been removed? Checked Not necessary cartridge Attachments Have all the printer’s attachments and Checked Not necessary accessories been included in the accessories package? ESPON FX-880/FX-1180 Service Manual...

  • Page 64: Screw Specifications

    Cross Bind-head B-tight screw Cross Bind-head P-tight screw Cross Pan-head screw CB(O) Cross Bind-head screw with outer toothed lock washer Table 3-4. Screw Types and Abbreviations (II) Head Body Washer Bind-head S-tight Outer toothed lock washer Pan-head B-tight P-tight ESPON FX-880/FX-1180 Service Manual...

  • Page 65: Printer Disassembly And Assembly

    PF Gear Train Removal Removal Printer Mechanism C229 Main Board Removal Removal Front PE Sensor Ribbon Drive Rear Paper Guide Removal Removal Removal C229 PSB/PSE Board Removal Rear PE Sensor Removal Platen Removal ROM Replacemant Figure 3-1. Disassembly Flowchart ESPON FX-880/FX-1180 Service Manual...

  • Page 66: Printhead Removal

    Wait for five minutes after unplugging the printer before removing the printhead; it is very hot and needs to cool down. CAUTION After replacing the printhead, perform the platen gap adjustment (see Chapter 4). CBS (M3 x 8) Printhead Head FFC Figure 3-2. Printhead Removal ESPON FX-880/FX-1180 Service Manual...

  • Page 67: Hp (Home Position) Sensor Removal

    1. Remove the top cover. 2. Release the hook securing the HP sensor to the printer. 3. Disconnect the cable from the sensor and remove the sensor. HP Sensor Hook Cable Figure 3-3. HP Sensor Removal ESPON FX-880/FX-1180 Service Manual...

  • Page 68: Disassembly Preparation

    1. Remove the paper guide, top cover, front cover, and knob. Remove the tractor and paper eject cover by pushing the tabs on each end. Paper Eject Cover Tractor Paper Guide Top Cover Knob Front Cover Figure 3-4. Disassembly Preparation ESPON FX-880/FX-1180 Service Manual...

  • Page 69: Upper Housing Removal

    4. Lift the front of the upper housing and disconnect the control panel FFC from the control panel connector. 5. Release the 2 hooks securing the control panel to the bottom-front of the upper housing, and remove the control panel. 6. Lift the upper housing by the front and remove it. ESPON FX-880/FX-1180 Service Manual...
  • Page 70 CBB Screw (4 x 12) Release Lever Collar Release Lever Sheet CBS Screw (M3 x 6) Upper Housing CBS Screw (M3 x 6) Release Lever Lower Case Control Panel FFC Figure 3-5. Upper Housing Removal 3-10 ESPON FX-880/FX-1180 Service Manual...

  • Page 71: C229 Main Board Removal

    The red wire on the cables for CN3, CN8 and CN9 must be in the Pin No. 1 position. After replacing the main board, perform the Default Setting and Bi-d Adjustments to write the new settings to the EEPROM (see Chapter 4). 3-11 ESPON FX-880/FX-1180 Service Manual...

  • Page 72: Disassembly And Assembly

    CBB Screw (3 x 12) I/F Guide Board CBB Screw (3 x 12) C229 Main Board C229 PSB/PSE Board CBS Screw (3 x 12) Upper Interface Cover Printer Mechanism Lower Case Figure 3-6. Main Board Removal 3-12 ESPON FX-880/FX-1180 Service Manual...

  • Page 73: C229 Psb/Pse Board Removal

    Note: To remove the rivet, center the Extractor on top of the rivet and push down to force the Extractor’s teeth under the head of the rivet. Then remove the rivet with a pull-and-twist motion. When re-installing the power supply board, use a CBB (3 × 12) screw in place of the rivet. 3-13 ESPON FX-880/FX-1180 Service Manual...

  • Page 74: Rom Removal

    3. Remove the 5 CBS (M3 × 4) screws and 3 CBB (3 × 12) screws securing the shield cover to the printer mechanism and lower housing, then remove the shield cover (see page 3-11). 4. Remove the ROM from the C229 main board. 3-14 ESPON FX-880/FX-1180 Service Manual...

  • Page 75: Platen Removal

    4. Rotate the platen shaft holders on either end of the platen until the tabs on the holders line up with the cutouts on the two side frames. 5. Slide the platen slightly to the right, then lift up to remove it. CAUTION When replacing the platen, perform the platen gap adjustment (see Chapter 4). 3-15 ESPON FX-880/FX-1180 Service Manual...
  • Page 76 Disassembly and Assembly CBS Screw (M3 x 8) Platen Cover Platen Shaft Holder Platen Platen Shaft Holder Left Side Frame Right Side Frame Figure 3-8. Platen Removal 3-16 ESPON FX-880/FX-1180 Service Manual...

  • Page 77: Printer Mechanism Removal

    See Figure 3-9. 6. Remove the 4 printer mechanism mounting screws, then lift the printer mechanism out to remove it. CAUTION After replacing the printer mechanism, perform the platen gap and Bi-d adjustments (see Chapter 4). 3-17 ESPON FX-880/FX-1180 Service Manual...
  • Page 78 Disassembly and Assembly CBB Screw (4 x 12) Front Frame Mechanism Mounting Screw Mechanism Mounting Screw Printer Mechanism Lower Housing Figure 3-9. Printer Mechanism Removal 3-18 ESPON FX-880/FX-1180 Service Manual...

  • Page 79: Printer Mechanism Disassembly

    5. Remove the 2 CB (M3 × 6) screws securing the CR motor to the motor bracket, then remove the CR motor. Carriage Mounting Screw CR Motor CR Motor Bracket Tension Spring CB Screw (M3 x 6) Hook Timing Belt Right Subframe Figure 3-10. CR Motor Removal 3-19 ESPON FX-880/FX-1180 Service Manual...
  • Page 80 When reassembling the CR motor, position it on the bracket as shown below: CR Motor Bracket CR Motor Cable Figure 3-11. Positioning the CR Motor on its Bracket CAUTION After replacing the CR motor or timing belt, perform the Bi-d adjustment (see Chapter 4). 3-20 ESPON FX-880/FX-1180 Service Manual...

  • Page 81: Pf Motor Removal

    If the release lever is in the friction feeding position, the PF motor cannot be removed. Release Lever MOVE LEVER FORWARD PF Motor CBS Screw (M3 x 8) Right Subframe Cable Figure 3-12. PF Motor Removal 3-21 ESPON FX-880/FX-1180 Service Manual...

  • Page 82: Pf Gear Train Disassembly

    Spur Gear, 34.5 Compression Spring 200 Release Lever Intermittent Gear Right Subframe CBS Screw (3 x 8) Plain Washer Spur Gear, 34.5 Spur Gear, 34 Head FFC Tractor Cam Clutch Figure 3-13. PF Gear Train Disassembly 3-22 ESPON FX-880/FX-1180 Service Manual...
  • Page 83 When assembling, engage the hole in the tractor cam clutch with the lower tab of the release lever. Be sure to properly match the release lever with the teeth of the intermittent gear, as shown below. Release Lever Intermittent Gear Figure 3-14. Release Lever and Intermittent Gear 3-23 ESPON FX-880/FX-1180 Service Manual...

  • Page 84: Pg (Platen Gap) Sensor Removal

    2. Release the 2 hooks securing the PG sensor to the left frame of the printer mechanism. 3. Disconnect the cable from the sensor and remove the sensor. Hook PG Sensor Left Frame Figure 3-15. PG Sensor Removal 3-24 ESPON FX-880/FX-1180 Service Manual...

  • Page 85: Release Lever Sensor Removal

    2. Release the 2 hooks securing the release lever sensor to the right subframe of the printer mechanism. 3. Disconnect the cable from the sensor and remove the sensor. Release Sensor Hooks Right Subframe Figure 3-16. Release Lever Sensor Removal 3-25 ESPON FX-880/FX-1180 Service Manual...

  • Page 86: Front Pe (Paper End) Sensor Removal

    2. Release the 2 hooks securing the front PE sensor to the rear paper guide. 3. Disconnect the cable from the sensor, then remove the sensor. Rear Paper Guide Hook Front PE Sensor Figure 3-17. Front PE Sensor Removal 3-26 ESPON FX-880/FX-1180 Service Manual...

  • Page 87: Rear Pe Sensor Removal

    4. Release the 2 hooks attaching the rear paper guide to the sensor, slide the sensor to the rear, and pull down to remove it. 5. Disconnect the cable from the sensor. Rear Frame Rear Paper Guide Hooks Rear PE Sensor Figure 3-18. Rear PE Sensor Removal 3-27 ESPON FX-880/FX-1180 Service Manual...

  • Page 88: Carriage Removal

    Washer Release Lever Hexagon Nut Carriage Parallel Adjustment Bushing Oil Pad Timing Belt Carriage Guide Shaft Front Frame Figure 3-19. Carriage Removal CAUTION After replacing the carriage, perform the platen gap adjustment (see Chapter 4). 3-28 ESPON FX-880/FX-1180 Service Manual...
  • Page 89 When attaching the timing belt to the carriage, secure the timing belt to the left and right clips of the carriage assembly as shown below. Make sure there is no slack in the timing belt. Clip Timing Belt Right Wrong Figure 3-20. Attaching the Timing Belt 3-29 ESPON FX-880/FX-1180 Service Manual...

  • Page 90: Rear Paper Guide Removal

    9. Remove the 2 CBS (M3 × 8) screws securing the rear frame to the right frame. 10. Push the hook on the bottom of the rear paper guide, then slide the rear paper guide out from the rear frame. 3-30 ESPON FX-880/FX-1180 Service Manual...
  • Page 91 Disassembly and Assembly CBS Screw (M3 x 8) Left Frame Rear Paper Guide CBS Screw (M3 x 8) Hook Rear Frame Rear Frame Figure 3-21. Rear Paper Guide Removal 3-31 ESPON FX-880/FX-1180 Service Manual...

  • Page 92: Ribbon Drive Removal

    9. Release the ribbon drive from the roller drive, then remove the ribbon drive. CBC Screw (M3 x 8) Ribbon Drive Roller Drive CBB Screw (3 x 8) Front Frame Figure 3-22. Ribbon Drive Removal 3-32 ESPON FX-880/FX-1180 Service Manual...

  • Page 93: Adjustments

    4. Adjustments Adjustment Overview ............................4-1 Required Adjustments ..........................4-1 Adjustment Tools............................4-1 Adjusting and Resetting the Printer........................4-2 Platen Gap Adjustment..........................4-2 Factory Settings............................4-4 Bidirectional Adjustment ..........................4-6 EPSON FX-880/FX-1180 Service Manual...
  • Page 94 Adjustments 4-ii EPSON FX-880/FX-1180 Service Manual...

  • Page 95: Adjustment Overview

    — means the adjustment is not required. Adjustment Tools The following table shows the tools required for each adjustment. Table 4-2. Required Adjustment Tools Adjustment Required Tool Platen gap Thickness gauge Factory settings Adjustment program diskette Bi-D print alignment Adjustment program diskette EPSON FX-880/FX-1180 Service Manual...

  • Page 96: Adjusting And Resetting The Printer

    Rotate the CR guide shaft so that the large countersunk hole on the left edge of the shaft faces upward. Parallelism Adjustment Bushing Carriage Assembly CR Guide Shaft Large countersunk hole Small countersunk hole Figure 4-2. Setting CR Guide Shaft EPSON FX-880/FX-1180 Service Manual...
  • Page 97 When the adjustment is complete, re-tighten the hexagonal nut on the PG adjust lever. Remove the printhead and install the ribbon mask. Re-install the printhead in the carriage assembly. CAUTION Do not rotate the platen during adjustment. EPSON FX-880/FX-1180 Service Manual...

  • Page 98: Factory Settings

    Enter. If you need to change your selection, press Esc to display the market setting menu again. An example (for EAI) is shown below: Program : xxxxxSetting: 9 pins VR 0 = x VR 1 = x VR 2 = x [ Setting File ] DEFSTD ITALIC >(2) USASTD EURSTD NLSP RUSSIAN EPSON FX-880/FX-1180 Service Manual...
  • Page 99 >(2)FF paper (7) – SUB MENU (3) ---- N/A ---- After the test pattern is printed, turn the printer off to store the factory settings in the EEPROM. Press Esc several times to quit the program. EPSON FX-880/FX-1180 Service Manual...

  • Page 100: Bidirectional Adjustment

    Mode 4 = x Cancel Print Speed Value Write Default [ESC] [SPACE] [RET] [HOME] Press the space bar to print the four-line Bi-D pattern for the current print mode, as shown below. Figure 4-4. Bi-D Adjustment Pattern EPSON FX-880/FX-1180 Service Manual...
  • Page 101 Less than 0.05 mm (at the left and right sides of the test pattern) Press Enter to set the adjustment value for each mode. Turn off the printer to store the Bi-D settings in the EEPROM. Press Esc several times to quit the program. EPSON FX-880/FX-1180 Service Manual...

  • Page 102: Troubleshooting

    Flowchart 5 – Abnormal Control Panel Operation ................5-12 Flowchart 6 – Fails to Print from PC....................5-13 Repairing the Power Supply Circuit Board....................5-14 Repairing the Main Board Assembly......................5-17 Repairing the Printer Mechanism......................5-21 EPSON FX-880/FX-1180 Service Manual...
  • Page 103 Troubleshooting 5-ii EPSON FX-880/FX-1180 Service Manual...

  • Page 104: Overview

    Printer Mechanism Disassembly and Adjustment Figure 5-1. Troubleshooting Process Flowchart The table below lists tools required for troubleshooting. Table 5-1. Required Tools Tool Description Oscilloscope Greater than 50 MHz recommended. Multimeter Digital recommended. (Analog can be used.) EPSON FX-880/FX-1180 Service Manual...

  • Page 105: Motors

    Place one lead on pin 2 and the other lead on pin 4. CR Motor 1, 2, 3, 4 Place one lead on pin 5 and the other lead on each of 4 test pins. at 77 F (25 C) EPSON FX-880/FX-1180 Service Manual...

  • Page 106: Motor Drivers

    Table 5-5. CR Motor Driver Resistance Values Pins to Measure Across Expected Resistance Levels High Both readings should be constant and within 10% of each other. High Both readings should be constant and within 10% of each other. EPSON FX-880/FX-1180 Service Manual...

  • Page 107: Printhead

    3 to test solenoid 3. at 77 F (25 C) Place one lead on pin C5 and the other lead on pin 7 to test solenoid 7. Printhead Connector Printhead View A Printhead Connector Figure 5-2. Printhead Connector Pin Alignment EPSON FX-880/FX-1180 Service Manual...

  • Page 108: Printhead Driver

    Q11,Q12,Q13,Q14,Q15 Neither open nor shorted. Neither open nor shorted. O.L. Small-signal Transistors (surface-mount type) Neither open nor shorted. Q16,Q17,Q18,Q19,Q20 O.L. Neither open nor shorted. Note: The middle lead on the surface-mounted transistors corresponds to the base. EPSON FX-880/FX-1180 Service Manual...

  • Page 109: Sensors

    CN2 (flat cable 1, 2 on the power 3, 4 + 35 V supply board) 5, 6 7, 8 + 5 V Note: The ground terminals GP and GL are connected and are not separate grounds. EPSON FX-880/FX-1180 Service Manual...

  • Page 110: Unit Level Troubleshooting

    Abnormal indication on the control panel. Printer fails to print from PC. Self-test prints correctly, but data from the PC Flowchart 6 does not print correctly. Printer does not print. Printer error message appears on screen. EPSON FX-880/FX-1180 Service Manual...

  • Page 111: Flowchart 1 - Printer Does Not Operate At Power-On

    Check resistance of printhead solenoids Is the problem and PF and CR motors. solved? If abnormal, replace the defective unit. Replace the main board. Flowchart 1. The Printer Does Not Operate at Power-On EPSON FX-880/FX-1180 Service Manual...

  • Page 112: Flowchart 2. Abnormal Carriage Operation

    Is the Replace the CR coils defective? problem motor. (See Table 5-3.) solved? Check the CR motor driver on the C229 MAIN board, and replace the board if defective. (See Table 5-5.) Flowchart 2. Abnormal Carriage Operation EPSON FX-880/FX-1180 Service Manual...

  • Page 113: Flowchart 3. Problem With Printing During Self-Test

    Check the FFCs Are there Is the problem using a multimeter. missing dots? corrected? Replace if defective. Replace the Is the problem printhead. corrected? Replace the C229 MAIN board. Flowchart 3. Problem With Printing During Self-test 5-10 EPSON FX-880/FX-1180 Service Manual...

  • Page 114: Flowchart 4. Printer Does Not Feed The Paper Correctly

    Replace the PF problem coils defective? motor. solved? (See Table 5-3.) Check to see if the PF motor driver is defective. If so, replace the C229 MAIN board. Flowchart 4. Printer Does Not Feed the Paper Correctly 5-11 EPSON FX-880/FX-1180 Service Manual...

  • Page 115: Flowchart 5. Abnormal Control Panel Operation

    Is the the FFC is securely problem connected to the solved? C229 MAIN board and to the PNL. Is the Replace the problem FFC. solved? Replace the C229 MAIN board. Flowchart 5. Abnormal Control Panel Operation 5-12 EPSON FX-880/FX-1180 Service Manual...

  • Page 116: Flowchart 6 - Fails To Print From Pc

    DOS? Otherwise, replace it. Check the software Replace the application and C229 MAIN printer driver for board. proper settings. Flowchart 6. Printer Fails to Print from PC 5-13 EPSON FX-880/FX-1180 Service Manual...

  • Page 117: Repairing The Power Supply Circuit Board

    Measure the resistance of Replace the coil (T1) is the T1 transformer coil. power supply open. board. Switching FET Check the voltage waveform Replace the (Q1) is between the source and power supply defective. drain of Q1. board. 5-14 EPSON FX-880/FX-1180 Service Manual...
  • Page 118 Q2 and Q3. board. operate. (continued) (continued) PC1 is defective Check the voltage waveform Replace the at pins 5 and 7 of PC1. The power supply frame may be used as the board. ground. 5-15 EPSON FX-880/FX-1180 Service Manual...
  • Page 119 9 as the ground. board. operate. (continued) Check the voltage waveform Replace the at pins 9 and 10 of IC51. power supply Use the frame as the ground. board. 5-16 EPSON FX-880/FX-1180 Service Manual...

  • Page 120: Repairing The Main Board Assembly

    Sometimes, the same solution may be offered for an entire class of problems; in this case, the checkpoints should be used for reference or as aids to further investigation. PF Motor Driver IC CR Motor Drive IC Gate array E05B50 PSRAM Print Head Driver PROM EEPROM Figure 5-4. Main Board Layout 5-17 EPSON FX-880/FX-1180 Service Manual...
  • Page 121 22 of IC7 and pin 30 of power supply is defective. IC6. (The signal should be board. present at one pin, but not the other.) You may use pin 15 as the ground. 5-18 EPSON FX-880/FX-1180 Service Manual...
  • Page 122 5, 6, 16, and 17 of IC8; also, abnormal. check the motor drive signals at pins 1, 8, 11, and 18 of IC8. The chassis frame may be used as the ground. Pin 5 of IC8 Pin 1, of IC8 5-19 EPSON FX-880/FX-1180 Service Manual...
  • Page 123 Q11 and Q25 is defective. BASE of Q5 COLLECTOR OF Q5 CORRECTOR of Q5 The CPU or IC2 Data from the Data corruption is defective. host prints occurs when the incorrectly. interface is used. 5-20 EPSON FX-880/FX-1180 Service Manual...

  • Page 124: Repairing The Printer Mechanism

    CR motor. The carriage The HP sensor Use the multimeter to check Replace the HP stops after is defective. the HP sensor. (See Table sensor. moving to the 5-8.) right or left margins. 5-21 EPSON FX-880/FX-1180 Service Manual...
  • Page 125 PF motor. See Table motor; if necessary, 5-3. It should be about 16 replace the driver. 10%. If there’s a short circuit in the coil, check to see if there’s a short circuit in the driver too. 5-22 EPSON FX-880/FX-1180 Service Manual...
  • Page 126 It should be 0.365 0.015. adjusted correctly. Printing Printing The PE sensor Check the PE sensor. See Replace the PE without continues past is defective. Table 5-8. sensor. paper the end of the page. 5-23 EPSON FX-880/FX-1180 Service Manual...

  • Page 127: Maintenance

    6. Maintenance Preventive Maintenance..........................6-1 Lubrication..............................6-1 EPSON FX-880/FX-1180 Service Manual...
  • Page 128 Maintenance 6-ii EPSON FX-880/FX-1180 Service Manual...

  • Page 129: Preventive Maintenance

    Before applying lubricant, make sure the surface to be lubricated is clean. Do not apply too much lubricant, because this may damage nearby components. Note: Apply lubricant before reassembling the printer. EPSON FX-880/FX-1180 Service Manual...
  • Page 130 The inside hole and three shafts in the ribbon drive assembly G-26 (3 mg) Various contact points for the ribbon drive gear assembly G-26 (3 mg) 6 contact points for the paper guide and release shaft. G-26 EPSON FX-880/FX-1180 Service Manual...
  • Page 131 : Lubrication Point Ref. No.(1) Figure 6-1. Lubrication Point 1 Gap Adjustment Lever Lubricate all these slots. Platen Gap Adjustment Slot : Lubrication Point Ref. No.(3) : Lubrication Point Ref. No.(2) Figure 6-2. Lubrication Points 2 and 3 EPSON FX-880/FX-1180 Service Manual...
  • Page 132 Maintenance : Lubrication Point Ref. No. 4 Figure 6-3. Lubrication Point 4 : Lubrication Point Ref. No.(5) : Lubrication Point Ref. No.(6) : Lubrication Point Ref. No.(7) Figure 6-4. Lubrication Points 5, 6, and 7 EPSON FX-880/FX-1180 Service Manual...
  • Page 133 Maintenance Release Shaft : Lubricating Point (8) Figure 6-5. Lubrication Point 8 EPSON FX-880/FX-1180 Service Manual...
  • Page 134 Appendix Connector Summary ..........................A-1 Component Layout.............................A-7 Exploded Diagrams..........................A-11 Dimensions and Weight...........................A-15 Circuit Diagrams ............................A-17 EPSON FX-880/FX-1180 Service Manual...

  • Page 135: Appendix

    Appendix A-ii EPSON FX-880/FX-1180 Service Manual...

  • Page 136: Connector Summary

    M-3J10 (FX-880) C229 PSB/PSE M-3J60 (FX-1180) Board Printhead PG Sensor CN11 CN10 Release Sensor CR Motor Parallel I/F PF Motor Rear PE Sensor Type-B I/F (optional) Front PE Sensor HP Sensor CN12 Panel Figure A-1. Cable Connections EPSON FX-880/FX-1180 Service Manual...
  • Page 137 HIGH signal indicates that the printer is out of paper. SLCT Always HIGH when the printer is powered on. /AFXT Not used. Not connected. Signal ground. Chassis Chassis ground. Logic H This line is pulled up to +5 V through 3.9K . EPSON FX-880/FX-1180 Service Manual...
  • Page 138 Address bus bit 3 Address bus bit 2 Address bus bit 1 Address bus bit 0 In/Out Data bus bit 7 In/Out Data bus bit 6 In/Out Data bus bit 5 In/Out Data bus bit 4 EPSON FX-880/FX-1180 Service Manual...
  • Page 139 Signal Function Home position sensor signal Ground Table A-8. Connector Pin Assignments-CN5 Signal Function +5 V +5 VDC line Rear PE sensor signal Ground Table A-9. Connect Pin Assignments-CN6 Signal Function Front PE sensor signal Ground EPSON FX-880/FX-1180 Service Manual...
  • Page 140 PF Motor Phase B PF-B PF Motor Phase B Table A-12. Connector Pin Assignments-CN9 Signal Function CR Motor Phase A CR-A CR Motor Phase A CR Motor Phase B CR-B CR Motor Phase B +35 V CR Motor Common EPSON FX-880/FX-1180 Service Manual...
  • Page 141 +5 VDC line POUTL Paper Out LED PAUSE Pause LED TOFFL Tear Off/Bin LED FONT2L Font LED FONT1L Font LED FONTSW Font button LFFFSW FF/LF button LDEJSW Load/Eject button PAUSESW Pause button Power switch control signal Ground EPSON FX-880/FX-1180 Service Manual...

  • Page 142: Component Layout

    Appendix Component Layout Figure A-2. C229 MAIN Board Component Layout EPSON FX-880/FX-1180 Service Manual...
  • Page 143 Appendix Figure A-3. C229 PSB Board Component Layout EPSON FX-880/FX-1180 Service Manual...
  • Page 144 Appendix Figure A-4. C229 PSE Board Component Layout EPSON FX-880/FX-1180 Service Manual...
  • Page 145 Appendix Figure A-5. C229PSH Component Layout Figure A-6. PNL Board Component Layout A-10 EPSON FX-880/FX-1180 Service Manual...

  • Page 146: Dimensions And Weight

    Appendix Dimensions and Weight FX-1180 Dimensions: W 23.2 inches (590mm) D 13.8 inches (350mm) H 6.1 inches (154mm) Weight: 21.2 lbs. (9.6 kg) 13.8" (350 mm) 23.2" (590 mm) Figure A-11. Physical Specifications for FX-1180 A-15 EPSON FX-880/FX-1180 Service Manual...
  • Page 147 Appendix FX-880 Dimensions: W 16.3 inches (415mm) D 13.8 inches (350mm) H 6.1 inches (154mm) Weight: 16.8 lbs. (7.6 kg) 16.3" (415 mm) 13.8" (350 mm) Figure A-12. Physical Specification for FX-880 A-16 EPSON FX-880/FX-1180 Service Manual...
  • Page 148 Appendix Circuit Diagrams LED4 FONT2L LED3 FONT1 LED2 TOFFL LED1 POUL LED0 PAUL 0.1u FONTSW LFFFSW LDEJSW PAUSSW PANEL Figure A-13. PNL Circuit Diagram A-17 EPSON FX-880/FX-1180 Service Manual...
  • Page 149 EXPLODED DIAGRAM FOR FX-880(1)
  • Page 150 EXPLODED DIAGRAM FOR FX-880(2)
  • Page 151 EXPLODED DIAGRAM FOR FX-1180(1)
  • Page 152 EXPLODED DIAGRAM FOR FX-1180(2)

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