Lexmark C780 User Manual

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C780, C782

User’s Guide

July 2007

Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc.,

registered in the United States and/or other countries.

© 2007 Lexmark International, Inc.

740 West New Circle Road

Lexington, Kentucky 40550

Table of Contents

Other manuals for Lexmark C780

Information9 pages

Questions and Answers:

A
anthony44Aug 20, 2025
Why my jobs do not print on Lexmark C780 Printer?
- A
  Anthony RothAug 21, 2025
  Jobs may not print on the Lexmark Printer due to several reasons. First, ensure that 'Ready' or 'Power Saver' is displayed before printing; if not, press the button to return to the 'Ready' state. Another reason might be a full output bin, so remove the paper stack. Verify that the tray isn't empty and is loaded with paper. Check that you're using the correct printer driver for the Lexmark C780, C782, especially if using a USB port with Windows Vista, Windows 2000, Windows XP, or Windows Server 2003. Also, confirm that your MarkNet N8000 series internal print server is correctly set up and connected, referring to the Software and Documentation CD or the Lexmark website for guidance. Finally, ensure you're using a recommended interface cable and that it's securely connected.
K
Keith JonesAug 22, 2025
What to do if more than one sheet of paper is fed in Lexmark Printer?
- H
  Heather FrostAug 22, 2025
  If more than one sheet of paper is fed or a sheet is fed improperly in your Lexmark Printer, remove the paper in the printer paper path and check the stack to ensure the paper has been loaded properly. Be sure to remove the top and bottom sheets of each ream of paper that is loaded.
C
cstevensonAug 25, 2025
Why does the paper tray lower unexpectedly on Lexmark C780?
- B
  Brian PetersAug 25, 2025
  If the paper tray lowers unexpectedly on your Lexmark Printer, check to see if your printer is out of paper or has a jam.
D
Denise BowersAug 26, 2025
What to do if paper jam message remains after removing paper from Lexmark Printer?
- J
  James ParksAug 26, 2025
  If the Paper Jam message remains after you remove the jammed paper from your Lexmark Printer, clear paper from the entire paper path, and then press .
D
Dr. Lacey SmithAug 27, 2025
How to fix consistent misfeeds or jams in feeder of Lexmark Printer?
- D
  dgutierrezAug 27, 2025
  For consistent misfeeds or jams in the feeder of your Lexmark Printer, try flexing the paper or turning the print media over. Also, check if the feeder is properly installed, paper is loaded correctly, paper is not damaged, paper meets specifications, and guides are positioned correctly for the paper size selected.
R
rmoralesAug 29, 2025
How to fix paper jams before reaching the mailbox on Lexmark Printer?
- Y
  ypenaAug 29, 2025
  If paper jams occur before reaching the mailbox on the Lexmark Printer, realign the mailbox and the printer. Also, check the electrical connection to ensure the mailbox is connected properly.
J
John BellAug 31, 2025
Why blank pages feed into the output bin on Lexmark C780?
- S
  Sydney GriffinAug 31, 2025
  If blank pages feed into the output bin on the Lexmark Printer, it may be because an incorrect media type is loaded in the tray being printed from. Load the correct type media for your print job, or change the Paper Type to match the type of media loaded.
A
Amanda MaciasSep 2, 2025
Why does job take longer than expected to print on Lexmark Printer?
- B
  Brittany JohnsonSep 2, 2025
  If your print job is taking longer than expected on the Lexmark Printer, it could be due to the job's complexity; try reducing the number and size of fonts, the complexity and number of images, and the number of pages. Alternatively, check if 'Page Protect' is set to 'On' in Print Recovery and, if so, set it to 'Off'.
P
Phillip ScottSep 4, 2025
Why incorrect characters print on Lexmark C780?
- E
  Elizabeth SchneiderSep 4, 2025
  If incorrect characters are printing on your Lexmark Printer, and you are using a parallel interface, ensure you are using an IEEE 1284-compliant parallel cable. If 'Ready. Hex Trace' appears on the display, turn the printer off and back on to exit Hex Trace mode.
Z
zcameronSep 5, 2025
Why job prints from the wrong tray on Lexmark C780?
- T
  Tim OwenSep 5, 2025
  If the job prints from the wrong tray or on the wrong paper or specialty media on the Lexmark Printer, ensure the 'Paper Size' and 'Paper Type' specified in the printer driver match the paper size and type in the tray and what is set on the printer's operator panel.

Lexmark C780 Specifications

General

Print Technology	Laser
Maximum Print Resolution	1200 x 1200 dpi
Memory	128 MB
Connectivity	Ethernet, USB
Output Trays Capacity	250 sheets
Network Ready	Yes
USB Port	Yes
Media Type	Cards, Envelopes, Labels, Plain Paper, Transparencies
Total Media Capacity	550 sheets
Maximum Paper Size	A4
Operating Systems Supported	Linux
Toner Cartridges	Cyan, Magenta, Yellow, Black

Summary

Installing and Removing Options

Installing a 2000-sheet drawer

Step-by-step instructions for installing the 2000-sheet paper drawer.

Installing a 500-sheet drawer

Step-by-step instructions for installing the 500-sheet paper drawer.

Installing a duplex unit

Installing the printer

Procedures for safely placing and installing the printer unit.

Installing an output expander

Installing a 5-bin mailbox

Installing a StapleSmart finisher

Installing memory and option cards

Steps for installing memory and various option cards.

Removing memory and option cards

Procedures for removing memory and option cards from the printer.

Printing

Sending a job to print

How to send a print job from a typical Windows application.

Printing from a USB flash memory device

Canceling a print job

Loading the trays

Instructions for loading paper and media into printer trays.

Loading the multipurpose feeder

Guide for loading paper and media into the multipurpose feeder.

Printing on specialty media (transparencies, labels, other)

Steps for printing on various specialty media types like labels and transparencies.

Holding a job in the printer

Printing confidential jobs

Process for sending and retrieving secure print jobs using a PIN.

Maintaining the printer

Conserving supplies

Print cartridges

Details about print cartridges, including handling and replacement.

Fuser and ITU

Clearing paper jams

Identifying jams

How to recognize and identify paper jams using the operator panel.

Access doors and trays

Understanding jam messages

Clearing the entire paper path

Step-by-step guide to clear paper jams from all printer areas.

Clearing mailbox, finisher, or output expander jams (Area M)

Specific instructions for clearing jams in optional output devices.

Clearing fuser jams

Procedures for clearing paper jams from the fuser area.

Clearing image transfer unit jams

Steps to clear paper jams from the image transfer unit.

Administrative Support

Disabling operator panel menus

Restoring factory default settings

Adjusting Power Saver

Encrypting the disk

Setting security using the Embedded Web Server (EWS)

Guide to configuring network security settings via the printer's web interface.

Supporting SNMPv3 (Simple Network Management Protocol version 3)

Supporting IPSec (Internet Protocol Security)

Using 802.1x Authenticating

Locking the operator panel menus

Printing Lockout

Confidential Print Setup

Aligning the image transfer unit

Steps to align the image transfer unit for optimal print quality.

Configuring printer alerts

Troubleshooting

Checking an unresponsive printer

Steps to diagnose and resolve an unresponsive printer.

Solving printing problems

Troubleshooting common issues related to printing jobs.

Solving mailbox problems

Solving option problems

Troubleshooting guide for installed printer options.

Solving high capacity feeder problems

Solving paper feed problems

Troubleshooting common paper feeding issues and jams.

Solving print quality problems

Guide to diagnose and resolve issues affecting print quality.

Solving color quality problems

Solutions for common problems related to color printing output.

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