Epson LQ-780 User Manual
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Epson LQ-780 User Manual

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User's Guide
NPD6761-01 EN

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  • Page 1 User’s Guide NPD6761-01 EN...
  • Page 2 Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result of accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the U.S.) failure to strictly comply with...

  • Page 3: Table Of Contents

    LQ-780/LQ-780N User’s Guide Contents About This Manual Where to Find Information ............. . . 7 Descriptions Used in this Manual.
  • Page 4 Accessing EPSON Status Monitor 3........
  • Page 5 Uninstalling the Printer Software............70 Uninstalling the printer driver and EPSON Status Monitor 3......70 Chapter 4 Troubleshooting Checking the Printer Status.
  • Page 6 Genuine Epson ribbon cartridge........

  • Page 7: About This Manual

    LQ-780/LQ-780N User’s Guide About This Manual Where to Find Information The following manuals are supplied with your Epson printer. Start Here (paper manual) Provides information on setting up the printer and installing the software. User’s Guide (this manual) Provides overall information and instructions on using the printer.
  • Page 8 LQ-780/LQ-780N User’s Guide ® ® ❏ Microsoft Windows 8 operating system ❏ Microsoft ® ® Windows 7 operating system ® ® ❏ Microsoft Windows Vista operating system ® ® ❏ Microsoft Windows XP operating system ❏ Microsoft ® ® Windows XP Professional x64 Edition operating system ®...

  • Page 9: Safety Instructions

    LQ-780/LQ-780N User’s Guide Safety Instructions Safety Instructions Warnings, Cautions, and Notes Warnings must be followed carefully to avoid bodily injury. Cautions must be observed to avoid damage to your equipment. Notes contain important information and useful tips on the operation of your printer.
  • Page 10 LQ-780/LQ-780N User’s Guide ❏ Do not place this product on a soft, unstable surface like a bed or a sofa, or a small, enclosed area, as this restricts ventilation. ❏ Do not block or cover the slots and openings in the printer’s cabinet, and do not insert objects through the slots.
  • Page 11 LQ-780/LQ-780N User’s Guide ❏ Avoid electrical outlets controlled by wall switches or automatic timers. An interruption in power can erase information in the memory of your printer or computer. Also avoid outlets on the same circuit as large motors or other appliances that can cause voltage fluctuations.

  • Page 12: For Singapore Users

    For Singapore users Replace fuses only with fuses of the correct size and rating. For German users Importeur EPSON EUROPE. B.V. AMSTERDAM. THE NETHERLANDS For Turkish users Safety Instructions...

  • Page 13: Zicta Type Approval For Users In Zambia

    LQ-780/LQ-780N User’s Guide ZICTA Type Approval for Users in Zambia See the following website to check the information for ZICTA Type Approval. https://support.epson.net/zicta/ Safety Instructions...

  • Page 14: Chapter 1 Printer Basics

    LQ-780/LQ-780N User’s Guide Chapter 1 Printer Basics Printer Parts printer cover Open this when replacing the ribbon cartridge or removing jammed paper. For your safety, printing cannot be performed if the printer cover is open, so make sure you close the printer cover when you are done.
  • Page 15 LQ-780/LQ-780N User’s Guide parallel interface connector Connects the parallel interface cable. USB port Connects a USB cable. LAN port (LQ-780N only) Connects a LAN cable. status sheet button (LQ-780N only) Press and hold this button for approximately three seconds to check the network status.

  • Page 16: Control Panel

    LQ-780/LQ-780N User’s Guide Control Panel Buttons and Lights Note: The control panel is designed to easily convey functions and operations. Single button operations: The Tear Off (o), LF/FF (d), Load/Eject (u), and Pause ( ) buttons are designed to perform common paper operations.
  • Page 17 LQ-780/LQ-780N User’s Guide Feeds paper line by line when pressing shortly. LF/FF button (d) Ejects a single sheet or advances continuous paper to the next top-of-form (Single button) position when held down. [Micro Adjust] Hold down the button for three seconds, the printer enters the [Micro Adjust] mode.

  • Page 18: Decoration Label

    LQ-780/LQ-780N User’s Guide Decoration label This product comes with a label that contains the light patterns for the control panel operation functions and links (QR codes) to the "Clearing a Paper Jam" and "Replacing the Ribbon Cartridge" web pages. Attach these links to easy-to-access locations if necessary.

  • Page 19: Selecting A Font And Menu

    LQ-780/LQ-780N User’s Guide Example of label attachment position: Selecting a Font and Menu You can select one of the printer’s fonts and Menu (default settings) by using the buttons on the printer’s control panel, as described below. Note: ❏ You can select other fonts than the seven fonts on the control panel by selecting Others. Other fonts can be set in the Default Setting mode.

  • Page 20: About Your Printer's Default Settings

    LQ-780/LQ-780N User’s Guide Roman Script Sans Serif Others = on, = off, = flashing 3. Make sure that the desired font is selected. About Your Printer’s Default Settings The default settings control many printer functions. While you can often set these functions through your software or printer driver, you may sometimes need to change a default setting from the printer’s control panel using the Default Setting mode.
  • Page 21 LQ-780/LQ-780N User’s Guide Item Setting / value *1 Packet mode Auto, Off Off, On Auto CR (IBM PPDS)* Off, On A.G.M. (IBM PPDS)* Font OCR-B, Orator, Orator S, Script C, Roman T, Sans Serif H Pitch 10cpi, 12cpi, 15cpi, 17cpi, 20cpi, Proportional...
  • Page 22 LQ-780/LQ-780N User’s Guide Skip over perforation This feature is available only when continuous paper is selected as the paper source. When you turn on this feature, the printer provides a one-inch (25.4 mm) margin between the last line printed on one page and the first line printed on the next page. Because most application program margin settings override margin settings from the control panel, you should use this setting only if you cannot set your top and bottom margins using your application.
  • Page 23 LQ-780/LQ-780N User’s Guide Software When you select ESC/P2 the printer operates in the EPSON ESC/P2 mode. When you select IBMPPDS, the printer emulates an IBM printer. 0 slash The zero character has a slash ( ) when this feature is turned on. It has no slash (0) when this feature is turned off.
  • Page 24 LQ-780/LQ-780N User’s Guide Auto CR (carriage return) This setting is available in the IBMPPDS emulation mode. When auto carriage return is on, each line feed (LF) code or ESC J code is accompanied by a carriage return code. This moves the print position to the beginning of the next line.

  • Page 25: Changing Default Settings

    LQ-780/LQ-780N User’s Guide Low-noise mode When this mode is set to On, the noise is reduced, but the printing speed is slower. Copy mode This setting allows you to set printing density. This mode can be set if the density is low when printing on copy paper.

  • Page 26: Lock-Out Mode

    LQ-780/LQ-780N User’s Guide 3. If the language you want is not selected, press the Item d button until the printout indicates the language you want. Note: You cannot change the language by the Item u button. 4. Press the Set (o) button to select the desired language.

  • Page 27: Changing The Lock-Out Mode Setting

    LQ-780/LQ-780N User’s Guide Changing the lock-out mode setting The following table shows the basic function of each button in the lock-out setting mode. Button Basic function Selects the next menu parameter. d button Selects the previous menu parameter. u button Changes the value in the selected menu.
  • Page 28 LQ-780/LQ-780N User’s Guide 4. Press the d button or the u button to select the menu parameters which you wish to change. Press the o button to scroll through the values within the selected parameter until you find the desired setting. After setting the selected parameter to the desired setting, you may continue to make changes to other parameters by pressing the d button or the u button.

  • Page 29: Chapter 2 Paper Handling

    LQ-780/LQ-780N User’s Guide Chapter 2 Paper Handling Selecting a Paper Source Your printer can print on continuous paper, multipart forms (with one original and up to six copies), cards, labels, single sheets, envelopes, and roll paper. Caution: Do not use paper that is folded (except envelope flaps), creased, curled, torn, stained, or stamped.

  • Page 30: Setting The Paper Release Lever

    LQ-780/LQ-780N User’s Guide Paper path Paper source selection Sheet guide Manual Single sheets * Roll paper Roll paper holder (Option) Manual * 1 Continuous paper includes labels, multipart forms, and continuous forms with labels. * 2 Single sheets include envelopes, postcards, and single sheet multipart forms.

  • Page 31: Loading Continuous Paper

    LQ-780/LQ-780N User’s Guide Loading Continuous Paper You can load continuous paper from the built-in tractor unit. Note: See “Continuous paper” on page 113 for detailed specifications on continuous paper. Positioning the continuous paper supply When you load continuous paper, make sure to line up the paper supply with the tractor so the paper feeds smoothly into the printer as shown below.

  • Page 32: Loading Continuous Paper With The Tractor

    LQ-780/LQ-780N User’s Guide Loading continuous paper with the tractor 1. Make sure that the paper release lever is set to the tractor feeding position. 2. Slide the edge guide all the way out. 3. Facing the back of the printer, release the sprocket lock levers by pushing them up.
  • Page 33 LQ-780/LQ-780N User’s Guide 4. Open the sprocket covers. 5. Fit the first three holes of the continuous paper over the sprocket pins on both sides. Be sure to position your paper supply so that the printable side faces up. Caution: Make sure the first sheet of your continuous paper has a clean, straight edge so that it can feed smoothly into the printer.
  • Page 34 LQ-780/LQ-780N User’s Guide 7. Close the sprocket covers. 8. Position the left sprocket so that the sprocket pins are to the left of the arrow mark on the back of the printer. Then push down the lock lever to lock the sprocket in place.
  • Page 35 LQ-780/LQ-780N User’s Guide 10. The printer is ready to start printing. When using continuous paper, you can use the tear off function to tear off printed pages and save the blank pages that are usually wasted between print jobs. For more information, see “Using the tear off function”...
  • Page 36 LQ-780/LQ-780N User’s Guide Caution: Never use the tear off function to feed continuous paper with labels backward; they may come off their backing sheet and jam the printer. Using the Tear Off button Follow these steps to remove continuous paper using the Tear Off button: 1.

  • Page 37: Loading Single Sheets

    LQ-780/LQ-780N User’s Guide Loading Single Sheets Your printer can print on single sheets of paper. See “Single sheets” on page 113 for detailed single sheet paper specifications. Note: If you load long paper (for example, legal size paper), leave enough space at the back of the printer so that the paper is not obstructed.
  • Page 38 LQ-780/LQ-780N User’s Guide 4. Slide the edge guide until it rests against the guide mark. * guide mark 5. While aligning the left side of a sheet of paper with the edge guide, insert it into the printer until it meets resistance. Be sure to load paper printable side up.

  • Page 39: Loading Special Paper

    LQ-780/LQ-780N User’s Guide Note: ❏ If the platen rotates but the printer does not load the paper, completely remove the paper and then insert it all the way into the printer again. ❏ If the paper feeds before you can adjust its position properly, increase the Manual feed wait time in the Default Setting mode.

  • Page 40: Labels

    LQ-780/LQ-780N User’s Guide Note: This printer automatically sets the distance between the print surface and the print head according to the thickness and number of sheets of paper, so you do not need to set the Head Gap. Labels You can use two types of labels: single-sheet and continuous forms. Do not use labels on shiny single sheet backing, because the backing sheet tends to slip and may not feed properly.

  • Page 41: Envelopes

    LQ-780/LQ-780N User’s Guide 1. At the back of your printer, tear off the last label form that has entered the printer. See the illustration below. 2. Press the LF/FF button to eject the last label form forward. Caution: Do not leave labels loaded in the printer between print jobs; they tend to curl and may come off their backing sheet and jam the printer when you resume printing.

  • Page 42: Postcards

    LQ-780/LQ-780N User’s Guide from the sheet guide * guide mark ** top edge first and flap side down Postcards You can print on a variety of postcards by loading them the same way you load single sheets from the sheet guide.

  • Page 43: Switching Between Continuous Paper And Single Sheets

    LQ-780/LQ-780N User’s Guide from the sheet guide * guide mark Switching Between Continuous Paper and Single Sheets When using the tractor, you can easily switch between continuous paper and single sheets (including envelopes or postcards) without removing the continuous paper from the tractor.

  • Page 44: Switching To Continuous Paper

    LQ-780/LQ-780N User’s Guide If the error buzzer sounds, there may still be paper on the paper path. Return the lever return to the tractor position and clear the remaining paper from the path. Now you can load single sheets from the sheet guide. See “Loading Single Sheets” on page 37 for more information.

  • Page 45: Using The Micro Adjust Function

    LQ-780/LQ-780N User’s Guide Using the Micro Adjust Function The Micro Adjust function allows you to move the paper forward or backward in 0.141 mm (1/180 inch) increments so that you can make precise adjustments to the top-of-form and tear off positions.

  • Page 46: Adjusting The Top-Of-Form Position

    LQ-780/LQ-780N User’s Guide 5. Press the Pause button to exit the Micro Adjust mode. When you resume printing, the printer automatically feeds the paper back to the top-of-form position and begins printing. Adjusting the top-of-form position The top-of-form position is the position on the page where the printer starts printing. If your printing appears too high or low on the page, you can use the Micro Adjust function to adjust the top-of-form position.

  • Page 47: Chapter 3 Printer Software

    ❏ Before proceeding, make sure you have installed the printer driver on your computer described in the supplied setup sheet. ❏ Make sure the printer setting is set to ESC/P2. The printer driver software and EPSON Status Monitor 3 can only function in ESC/P2 mode.

  • Page 48: Accessing The Printer Driver From Windows Applications

    LQ-780/LQ-780N User’s Guide See “Changing the printer driver settings” on page 51 to check and change printer driver settings. Note: While many Windows applications override the settings made with the printer driver, some do not, so you must verify that the printer driver settings match your requirements.
  • Page 49 LQ-780/LQ-780N User’s Guide 2. Click Preferences. The Printing Preferences window appears, and you see the Paper/Quality, Layout, User Defined Paper, and Extension Settings menus. These menus contain the printer driver settings. 3. To view a menu, click the corresponding tab at the top of the window. See “Changing the printer driver settings”...

  • Page 50: Accessing The Printer Driver From The Start Menu

    LQ-780/LQ-780N User’s Guide Accessing the printer driver from the Start menu Follow these steps to access the printer driver from the Start menu: Note: The screen shots used in this procedure are from the Windows 10 operating system. The content on the screen and the following steps may vary depending on your computer’s environment.

  • Page 51: Changing The Printer Driver Settings

    LQ-780/LQ-780N User’s Guide When you click Printer properties in the menu displayed by right-clicking the printer icon, the Properties window appears, which includes menus used to make the printer driver settings. 3. To view a menu, click the corresponding tab at the top of the window. See “Printer Driver Settings Overview”...

  • Page 52: Printer Driver Settings Overview

    LQ-780/LQ-780N User’s Guide Click the Help button on the Printer Driver screen. When you finish making your printer driver settings, click OK to apply the settings, or click Cancel to cancel your changes. Once you have checked your printer driver settings and changed them if necessary, you are ready to print.
  • Page 53 Make sure that Bi-d is selected as the Print direction setting stored in the printer. Otherwise this setting is ignored by the printer. Printable Area If Standard is selected, the normal printable area for Epson impact printers is used. If Maximum is selected, the printer’s maximum printable area is used. Top Margin Priority Select which setting for the print start position is to be used;...
  • Page 54 LQ-780/LQ-780N User’s Guide Settings Explanations Printer Font Setting Select a character table group to use. You can select one of three character table groups, Standard, Expanded, and None (Bit Image printing). When Standard or Expanded is selected, the printer uses the device fonts. Expan- ded includes more fonts than Standard.

  • Page 55: Monitoring Settings

    ❏ Your system is configured to support bidirectional communication. You can install EPSON Status Monitor 3 by selecting it when you set up the printer. If you need to install it, see “Installing EPSON Status Monitor 3” on page 56. When sharing the printer, be sure to set EPSON Status Monitor 3 so that the shared printer can be monitored on the printer server and clients.

  • Page 56: Installing Epson Status Monitor 3

    ENAGENT.EXE to Exceptions of the firewall function. Installing EPSON Status Monitor 3 If you have not installed EPSON Status Monitor 3 yet, follow the steps below to install EPSON Status Monitor 3. 1. Make sure that the printer is off and that Windows is running on your computer.
  • Page 57 LQ-780/LQ-780N User’s Guide 3. Click the Monitoring Preferences button. The Monitoring Preferences dialog box appears. 4. The following settings are available: Select Notification Displays the error item check box On/Off status. Turn on this check box to display the selected error notification.

  • Page 58: Accessing Epson Status Monitor 3

    Utility menu and follow the instructions. ❏ Open the Utility menu, then click the EPSON Status Monitor 3 icon. To find out how to open the Utility menu, See “Using the Printer Driver” on page 47.

  • Page 59: Using Bi-D Adjustment

    You can view printer status information in this window. Note: It might not be possible to retrieve the printer status during printing. In this situation, click the EPSON Status Monitor 3 button in the Utility tab, and use the printer with the status window left open.
  • Page 60 LQ-780/LQ-780N User’s Guide 1. Open the Utility menu, then click the Bi-D Adjustment icon. To find out how to open the Utility menu, see “Using the Printer Driver” on page 47. The Bi-D Adjustment window appears. 2. Click Next. 3. Click Print. The printer prints three sets of adjustment pattern. To see the adjustment pattern, you need four sheets of A3 size single sheet paper or 12 inch (recommended) continuous paper.

  • Page 61: Using Printer Setting

    LQ-780/LQ-780N User’s Guide Using Printer Setting This utility tool allows you to display current settings stored in the printer, change settings of the printer, and read settings stored in the file or save settings to the file. You can also change some of the printer’s default settings stored in the printer from this utility. For details on the setting items, see “Changing default settings”...
  • Page 62 LQ-780/LQ-780N User’s Guide 1. Open the Utility menu, then click the Printer Setting icon. To find out how to open the Utility menu, see “Using the Printer Driver” on page 47. The Printer Setting windows appears. 2. Change the necessary printer settings. For details on how to use this tool, refer to the printer driver Help.

  • Page 63: Setting Up Your Printer On A Network

    ❏ See “Setting for the clients” on page 65. Note: ❏ When sharing the printer, be sure to set EPSON Status Monitor 3 so that the shared printer can be monitored on the printer server and clients. See “Setting up EPSON Status Monitor 3” on page 56.
  • Page 64 LQ-780/LQ-780N User’s Guide In either case, follow the on-screen instructions. Select Share this printer, then type the name in the Share name box and click OK. Note: Do not use spaces or hyphens for the share name, or an error may occur.

  • Page 65: Setting For The Clients

    Printers folder. You can also access the shared printer from Network Neighborhood or My Network on the Windows desktop. ❏ When you want to use the EPSON Status Monitor 3 at clients, you have to install both of the printer driver and the EPSON Status Monitor 3 in each client.
  • Page 66 LQ-780/LQ-780N User’s Guide 2. Right-click the icon for the printer you wish to change the settings for, and then click Printer properties. Printer Software...
  • Page 67 LQ-780/LQ-780N User’s Guide 3. Click the Ports tab and then click Add Port. 4. When the Printer Ports window appears, select Local Port, and then click New Port. Printer Software...
  • Page 68 LQ-780/LQ-780N User’s Guide 5. Enter the following information for the port name and then click OK. \\Name of computer connected to the target printer\name of shared printer 6. After returning to the Printer Ports window, click Cancel. 7. Check that the name you entered for the port has been added and selected, and then click Close.

  • Page 69: Cancelling Printing

    ❏ If you also want to install EPSON Status Monitor 3, see “Installing EPSON Status Monitor 3” on page 56 for instructions. ❏ If you want to use EPSON Status Monitor 3 for the shared printer, reinstall the printer driver as instructed in “Setting for the clients” on page 65 after installing the printer driver and EPSON Status Monitor 3 from the CD-ROM.

  • Page 70: Uninstalling The Printer Software

    Note: When uninstalling EPSON Status Monitor 3 from a multi-user environment, remove the shortcut icon from all clients before uninstalling. You can remove the icon by clearing the Shortcut Icon check box in the Monitoring Preferences dialog box.
  • Page 71 7. Click the Printer Model tab, select the icon of the printer you want to uninstall, then click OK. Note: Make sure that nothing is selected in the Printer Model tab. Open Utility tab and select EPSON Status Monitor 3 (for EPSON XXXXXX ESC/P) and click OK. You can uninstall only the EPSON Status Monitor 3.
  • Page 72 LQ-780/LQ-780N User’s Guide 8. Follow the on-screen instructions. Printer Software...

  • Page 73: Chapter 4 Troubleshooting

    LQ-780/LQ-780N User’s Guide Chapter 4 Troubleshooting Checking the Printer Status Using the Error Indicators You can identify many common printer problems using the lights on the control panel. If your printer stops working and one or more control panel lights are on or flashing or the printer beeps, use the following table to diagnose and fix the problem.

  • Page 74: Problems And Solutions

    LQ-780/LQ-780N User’s Guide Panel light state Beep pattern Problem Solution Paper Out ----- Single sheet paper is not fully ejected. Pause Press the Load/Eject button to eject the sheet. ----- Continuous paper is not fed to the standby position. Tear off the printed page at the perforation; then press the Load/ Eject button.

  • Page 75: Power Supply Problems

    LQ-780/LQ-780N User’s Guide You can also use the self test to determine whether the printer or the computer is causing the problem. See “Printing a Self Test” on page 90 for instructions on printing a self test. To pinpoint communication problems, experienced users may want to use the printer’s hex dump mode, described in “Printing Hex Dump”...
  • Page 76 LQ-780/LQ-780N User’s Guide The printer is not connected directly to your When you use a printer changer, printer buffer, or a extension computer. cable, the printer does not print correctly due to the combination of these devices. Make sure that the printer works correctly when it is connected to your computer without these devices.
  • Page 77 LQ-780/LQ-780N User’s Guide The paper is stuck together with static Fan the paper well before you use it. electricity. The printout is pale. Cause What to do The ribbon is worn out. Replace the ribbon cartridge as described in “Replacing the Ribbon Cartridge”...
  • Page 78 LQ-780/LQ-780N User’s Guide Two line feed commands are being sent at the Turn off the auto line feed setting in the printer’s Default Setting end of each line of text, because the printer’s mode. See “Changing default settings” on page 25.

  • Page 79: Paper Handling

    LQ-780/LQ-780N User’s Guide The printer’s page length setting for the rear Change page length settings for the rear tractor in the using the tractor does not match the size of the printer’s Default Setting mode. See “Changing default settings” continuous paper you are using.
  • Page 80 LQ-780/LQ-780N User’s Guide The paper source is set to tractor feeding. Set the paper release lever to the single-sheet position. The paper is not loaded properly. See “Loading Single Sheets” on page 37 for instructions on loading single sheet paper.

  • Page 81: Correcting Usb Problems

    LQ-780/LQ-780N User’s Guide Cause What to do Your paper may be too long or too short. Make sure the page length of your paper is within the specified range. See “Paper” on page 113 for information on the continuous paper specification.

  • Page 82: Clearing A Paper Jam

    LQ-780/LQ-780N User’s Guide Clearing a Paper Jam For jammed continuous paper Note: If continuous paper is jammed, pull out the paper from the push tractor side (rear). If you pull out the paper from the sheet guide side (front), some paper may remain inside the printer.
  • Page 83 LQ-780/LQ-780N User’s Guide 4. Open the printer cover. 5. Pull the paper bail forward. Secure it in place by fitting it into the slot on the both sides. 6. Remove the ribbon cartridge. For details, see “Replacing the ribbon cartridge” on page 99.
  • Page 84 LQ-780/LQ-780N User’s Guide 7. Pull up the jammed paper from rear tractor. 8. Install the ribbon cartridge. For details, see “Replacing the ribbon cartridge” on page 99. 9. Lift the paper bail up to remove it from the slot on the both sides, and then return it to its original position.

  • Page 85: For Jammed Single Sheet Paper

    LQ-780/LQ-780N User’s Guide For jammed single sheet paper Note: If cut sheet paper is jammed, pull out the paper from the sheet guide side (front). If you pull out the paper from the push tractor side (rear), some paper may remain inside the printer.
  • Page 86 LQ-780/LQ-780N User’s Guide Secure it in place by fitting it into the slot on the both sides. 5. Remove the ribbon cartridge. For details, see “Replacing the ribbon cartridge” on page 99. 6. Pull up the jammed paper from front side.

  • Page 87: For Jammed Paper Remains Inside The Printer

    LQ-780/LQ-780N User’s Guide 8. Lift the paper bail up to remove it from the slot on the both sides, and then return it to its original position. 9. Close the printer cover. For jammed paper remains inside the printer If paper remains inside the printer even after performing the steps for "For jammed continuous paper"...

  • Page 88: Aligning Vertical Lines In Your Printout

    LQ-780/LQ-780N User’s Guide 6. Return the paper bail to its original position, close the printer cover, and then turn on the power. 7. Press the u button to eject the remaining pieces of paper. 8. Turn off the printer, open the printer cover, and remove any remaining pieces of paper.

  • Page 89: Cancelling Printing

    LQ-780/LQ-780N User’s Guide 3. As described in the instructions, compare the alignment patterns and select the pattern with the best alignment. Then select the pattern with the best alignment for each of the remaining sets of alignment patterns. 4. After you select the best pattern in the final set of alignment patterns and save your selection by pressing the Tear Off button, turn off the printer and exit the bidirectional adjustment mode.

  • Page 90: Printing A Self Test

    LQ-780/LQ-780N User’s Guide Printing a Self Test Running the printer’s self test helps you determine whether the printer or the computer is causing the problem: ❏ If the self test results are satisfactory, the printer is working properly and the problem is probably caused by your printer driver settings, application settings, computer, or interface cable.

  • Page 91: Printing Hex Dump

    LQ-780/LQ-780N User’s Guide Note: To temporarily stop the self test, press the button. To resume the test, press the button again. 4. To end the self test, press the button to stop printing. If paper remains in the printer, press the u button to eject the printed page.
  • Page 92 LQ-780/LQ-780N User’s Guide By comparing the characters printed in the right column with the printout of the hexadecimal codes, you can check the codes being received by the printer. If characters are printable, they appear in the right column as ASCII characters. Nonprintable codes, such as control codes, are represented by dots.

  • Page 93: Chapter 5 Where To Get Help

    If Epson support for your area is not listed below, contact the dealer where you purchased your product. Epson support will be able to help you much more quickly if you give them the following information: ❏ Product serial number (The serial number label is usually on the back of the product.)

  • Page 94: Help For Users In Europe

    Depending on the product, the dial list data for fax and/or network settings may be stored in the product’s memory. Due to breakdown or repair of a product, data and/or settings may be lost. Epson shall not be responsible for the loss of any data, for backing up or recovering data and/or settings even during a warranty period.

  • Page 95: Help For Users In Indonesia

    LQ-780/LQ-780N User’s Guide Epson Service Center 65 Truong Dinh Street, District 1, Hochiminh City, Vietnam. Phone(Ho Chi Minh City): 84-8-3823-9239, 84-8-3825-6234 29 Tue Tinh, Quan Hai Ba Trung, Hanoi City, Vietnam Phone(Hanoi City): 84-4-3978-4785, 84-4-3978-4775 Help for Users in Indonesia...
  • Page 96 LQ-780/LQ-780N User’s Guide NORTH ESC MEDAN Jl. Bambu 2 Komplek Graha Niaga (+6222) 4207033 SUMATERA Nomor A-4, Medan - North Sumatera bdg-admin@epson-indonesia.c o.id ESC YOGYAKARTA YAP Square, Block A No. 6 Jl. C (+62274) 581065 YOGYAKARTA Simanjutak Yogyakarta - DIY ygy-admin@epson-indonesia.co...

  • Page 97: Help For Users In Malaysia

    World Wide Web http://www.epson.com.my ❏ Information on product specifications, drivers for download ❏ Frequently Asked Questions (FAQ), Sales Enquiries, questions through e-mail Epson Call Centre Phone: +60 1800-8-17349 ❏ Sales enquiries and product information ❏ Product usage questions or problems ❏...

  • Page 98: Help For Users In The Philippines

    User’s Guide Help for Users in the Philippines To obtain technical support as well as other after sales services, users are welcome to contact the Epson Philippines Corporation at the telephone, fax numbers and e-mail address below: World Wide Web http://www.epson.com.ph Information on product specifications, drivers for download, Frequently Asked Questions (FAQ), and E-mail Enquiries are available.

  • Page 99: Chapter 6 Options And Consumables

    Epson printer. They ensure proper operation and long life of the print head and other printer parts. Other products not manufactured by Epson may cause damage to your printer, which is not covered by Epson’s warranties.
  • Page 100 LQ-780/LQ-780N User’s Guide The print head automatically moves to the ribbon cartridge replacement position. Caution: If you open the printer cover while the power is on, the buzzer sounds, so wait until the print head moves and comes to a stop.
  • Page 101 LQ-780/LQ-780N User’s Guide 4. Grasp the ribbon guide and pull it until it is out of the print head. 5. Hold the tabs at both sides of the ribbon cartridge and pull it out of the printer. 6. Remove the new ribbon cartridge from its package.
  • Page 102 LQ-780/LQ-780N User’s Guide 8. Attach the ribbon guide to the print head by sliding it in while inserting the guide pins until it clicks into place. Note: Be sure that the ribbon is not twisted when you slide the ribbon guide into the print head.

  • Page 103: Roll Paper Holder

    LQ-780/LQ-780N User’s Guide 10. Lift the paper bail up to remove it from the slot on the both sides, and then return it to its original position. 11. Close the printer cover. Roll Paper Holder The optional roll paper holder (C811141) allows you to use 8.5-inch roll paper like that used with telex machines.

  • Page 104: Installing The Roll Paper Holder

    LQ-780/LQ-780N User’s Guide 1. Fit the arc bearings into the stand as shown. 2. Place the base plate on the stand and fasten the two together with the plastic spacing clips. Make sure you orient the stand and base plate as shown below.

  • Page 105: Loading Roll Paper

    LQ-780/LQ-780N User’s Guide 2. Slide the edge guide all the way to the left, and facing the back of the printer, slide both sprocket units all the way to the right. 3. Position the roll paper holder beneath the printer as shown below. Fit the two holes in the roll paper holder base under the two positioning pegs on the bottom of the printer.
  • Page 106 LQ-780/LQ-780N User’s Guide 3. Cut the leading edge of the roll paper straight across. 4. Insert the roll paper holder shaft into the center of the paper roll as shown. 5. Set the shaft and paper roll onto the roll paper holder. Load the roll so that paper feeds from the top of the roll and the edge of the roll paper passes the tension lever.

  • Page 107: Removing Roll Paper

    LQ-780/LQ-780N User’s Guide Removing roll paper Roll paper cannot be fed backward. To remove a roll paper, cut the roll paper behind where it feeds into the printer; then press the Load/Eject button to eject the remaining paper. Options and Consumables...

  • Page 108: Chapter 7 Product Information

    LQ-780/LQ-780N User’s Guide Chapter 7 Product Information Printer Specifications Mechanical Printing method: 24-pin impact dot matrix Printing speed: High speed draft 487 cps at 10 cpi Draft 366 cps at 10 cpi Letter quality 121 cps at 10 cpi Printing direction: Bidirectional logic seeking for text and graphics printing.

  • Page 109: Electronic

    LQ-780/LQ-780N User’s Guide Dimensions and weight: Height 211 mm (8.3 inches) Width 480 mm (18.9 inches) Depth 301.3 mm (11.9 inches) Weight approx. 6.72 kg (14.81 lb) Ribbon: Black ribbon cartridge S015656 (For users in America) C13S015657 (For worldwide users)
  • Page 110 Epson Sans Serif 10.5 pt., 8 pt. - 32 pt. (every 2 pt.) Epson Roman T 10.5 pt., 8 pt. - 32 pt. (every 2 pt.) Epson Sans Serif H 10.5 pt., 8 pt. - 32 pt. (every 2 pt.) Bar code fonts:...

  • Page 111: Electrical

    LQ-780/LQ-780N User’s Guide Character tables: Standard model: Italic table, PC 437 (US, Standard Europe), PC 850 (Multilingual), PC 860 (Portuguese), PC 861 (Icelandic), PC 865 (Nordic), PC 863 (Canadian-French), BRASCII, Abicomp, ISO Latin 1, Roman 8, PC 858, ISO 8859-15...

  • Page 112: Environmental

    LQ-780/LQ-780N User’s Guide Power consumption (with USB AC 100 - 120 V: Approx. 46 W (ISO/IEC 10561 letter connection) Approx. 49 W (ISO/IEC 10561 letter pattern) pattern) LQ-780: LQ-780: Approx. 0.8 W in sleep mode Approx. 0.7 W in sleep mode 0.1 W in power-off...

  • Page 113: Paper

    LQ-780/LQ-780N User’s Guide Paper Note: ❏ Use recycled paper, multipart paper, labels, envelopes, and postcards only under normal temperature and humidity conditions described below. Temperature: 15 to 25 ˚C (59 to 77 ˚F) Humidity: 30 to 60 % RH ❏ Do not load paper that is curled, folded, or crumpled.
  • Page 114 LQ-780/LQ-780N User’s Guide ❏ The sprocket hole must be a circle or notched circle. ❏ The holes must be cleanly cut. ❏ If the horizontal and vertical perforations are crossed, the shaded area below should not be printed on. Uncrossed perforations do not have this restricted area.
  • Page 115 LQ-780/LQ-780N User’s Guide ❏ If you use continuous paper whose page length (A in the next illustration) is under 101.6 mm (4.0 inches), make sure that the length between folds (B) is over 101.6 mm (4.0 inches.) Width 101.6 to 304.8 mm (4.0 to 12.0 inches) Length/page 76.2 to 558.8 mm (3.0 to 22.0 inches)
  • Page 116 LQ-780/LQ-780N User’s Guide Multipart forms The specifications for the dimensions of multipart forms are the same as those for single sheets and continuous paper. See “Single sheets” on page 113 and “Continuous paper” on page 113 for detailed information. ❏ The form sheets of continuous multipart forms should be securely joined together along the left and right edges by crimping or, spot-gluing.
  • Page 117 LQ-780/LQ-780N User’s Guide ❏ The binding area should be flat and have no creases. ❏ The sprocket holes should be a circle or a notched circle. ❏ The sprocket holes of all sheets in the form should be aligned properly.
  • Page 118 LQ-780/LQ-780N User’s Guide Backing sheet width single sheets 100 to 210 mm (3.9 to 8.3 inches) multipart forms 101.6 to 304.8 mm (4.0 to 12.0 inches) Labels Width 63.5 mm (2.5 inches), minimum Height 23.8 mm (0.94 inch), minimum Corner radius 2.5 mm (0.1 inch), minimum...

  • Page 119: Printable Area

    LQ-780/LQ-780N User’s Guide Postcards Width 90 to 200 mm (3.5 to 7.8 inches) Length 60 to 200 mm (2.3 to 7.8 inches) Thickness 0.22 mm (0.0087 inch) Weight 192 g/m² (51 lb) Quality Plain paper Roll paper Width 213 to 219 mm (8.38 to 8.62 inches) Thickness 0.07 to 0.09 mm (0.0028 to 0.0035 inch)
  • Page 120 LQ-780/LQ-780N User’s Guide Continuous paper (including continuous multipart forms) The minimum top and bottom margins (above and below the perforation) are 4.2 mm (0.17 inch). The minimum left or right margin is 13 mm (0.51 inch). 18 mm for the paper whose page width is 304.8 mm (12.0 inches).

  • Page 121: System Requirements

    ❏ The connection of a non-shielded printer interface cable to this printer will invalidate the EMC standards of this device. ❏ You are cautioned that changes or modifications not expressly approved by Seiko Epson Corporation could void your authority to operate the equipment.

  • Page 122: Cleaning The Printer

    Directives and harmonized standards used to declare conformity. https://www.epson.eu/conformity LQ-780: PB61A LQ-780N: PB61B Cleaning the Printer To keep your printer operating at its best, you should clean it thoroughly several times a year.

  • Page 123: Transporting The Printer

    ❏ Do not use a hard or abrasive brush. ❏ Do not spray the inside of the printer with lubricants; unsuitable oils can damage the printer mechanism. Contact your Epson dealer if you think lubrication is needed. Transporting the Printer If you need to transport your printer for some distance, carefully repack it using the original box and packing materials.
  • Page 124 LQ-780/LQ-780N User’s Guide 5. Remove the sheet guide. If any options are installed, remove them and pack them in their original boxes. Product Information...
  • Page 125 LQ-780/LQ-780N User’s Guide 6. Pull the paper bail forward. Secure it in place by moving it forward until the front edge lowers and comes to a stop, and then attach the plastic packing material to prevent the head from moving.
  • Page 126 LQ-780/LQ-780N User’s Guide 7. Lift up the front of the paper bail and let it move backwards to return it to its original position. 8. Make sure that the printer cover is closed. 9. Repack the printer, sheet guide, ribbon cartridge, and power cord (if necessary) in their original packing materials and place them in the printer’s original box.

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