Lexmark X792 Color Product Study Manual
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Lexmark X792 Color Product Study Manual

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Lexmark C792/X792
Color Product Study Guide

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Summary of Contents for Lexmark X792

  • Page 1 Lexmark C792/X792 Color Product Study Guide...
  • Page 2 THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 3 Comments may be addressed to Lexmark International, Inc., Services Training/008-2, 740 West New Circle Road, Lexington, Kentucky 40550, U.S.A or e-mail at SVCTrain@Lexmark.com. Lexmark may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
  • Page 4 Lexmark C792/X792 Color Product Study Guide Rev 2.1 THIS PAGE INTENTIONALLY LEFT BLANK For Training Purposes Only 6/24/2011...

  • Page 5: Table Of Contents

    ........................16 APER RANSPORT YSTEM C792 and X792 Print Engine Key Hardware Components ............16 C792 and X792 Print Engine Key Sensor Components ..............17 C792 and X792 Print Engine Paper Path ..................18 X792 Scanner Key Components....................19 X792 Scanner Paper Path ......................20 C792 and X792 Paper Jam Locations ...................21...
  • Page 6 Lexmark C792/X792 Color Product Study Guide Rev 2.1 OPERATOR PANEL AND MENUS ................22 C792 O ........................22 PERATOR ANEL C792 Home Screen........................23 C792 Administrative (Customer) Menu..................24 C792 Service Menus........................25 X792 O .........................27 PERATOR ANEL X792 Home Screen........................28 X792 Home Screen Buttons ......................
  • Page 7 Lexmark C792/X792 Color Product Study Guide Rev 2.1 UICC Card – C792 Only ......................47 Scanner Interface Card – X792 Only ..................47 Flatbed Scanner Assembly – X792 Only ..............47 System Board – C792 and X792 .................. 47 OTHER SPECIAL INSTRUCTIONS ................48 MFP D –...
  • Page 8 Lexmark C792/X792 Color Product Study Guide Rev 2.1 THIS PAGE INTENTIONALLY LEFT BLANK For Training Purposes Only 6/24/2011...

  • Page 9: Config Ids, Tli, Type And Serial Number Location

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Config IDs, TLI, Type and Serial Number Location To find the Config IDs, TLI, printer Type and Serial number, open the front cover and look inside the machine on the left hand side.

  • Page 10: C792 Technical Information

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 C792 Technical Information Specifications C792e C792de C792dte C792dhe Processor Speed and Type 1.2 GHZ Power PC Processor Memory Standard 512 MB (Max 1.5 GB) 1GB (Max 1.5GB) Optional Memory 256MB, 512MB and 1 GB DDR2 SODIMM...

  • Page 11: Duty Cycle

    Average Monthly Page Volume month. Lexmark recommends that the number of pages per month be within the stated range for optimum device performance, based on factors including: supplies replacement intervals, paper loading intervals, speed, and typical customer usage.

  • Page 12: Media Options

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Media Options Lexmark C792 Options 550-Sheet Drawer 2000-Sheet High Capacity Feeder Spacer Drawer Banner Media Tray [No Picture Available] 500-Sheet Staple Finisher (includes Stapler and Transport Unit) 500-Sheet Staple, Hole Punch Finisher...

  • Page 13: Maximum Paper Handling And Furniture Configurations

    Maximum Paper Handling and Furniture Configurations The authoritative tables of maximum Printer Paper Options/Furniture combinations are publicly available at www.lexmark.com/multifunctionprinters. Please refer to this information when purchasing additional paper input options for any of the C790 Series printers. 2000-sheet High...

  • Page 14: Supply Items

    Note: Starter cartridges cannot be swapped between printers for troubleshooting purposes as it will post a 32 Unsupported Cartridge Error message. Note: The Extra High Yield Toner cartridges for the C792 printer will work in both the C792 and the X792. C792 Maintenance Items...

  • Page 15: X792 Mfp Technical Information

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 X792 MFP Technical Information Specifications X792de X792dte X792dtfe X792dtpe X792dtme X792dtse Processor Speed and Type 1.2 GHZ Power PC Processor Memory Standard 1GB RAM (Max 2 GB) Optional Memory 256MB, 512MB and 1 GB DDR2 SODIMM...

  • Page 16: Duty Cycle

    Average Monthly Page Volume is an average range of pages customers plan to print on the device each month. Lexmark recommends that the number of pages per month be within the stated range for optimum device performance, based on factors including: supplies replacement intervals, paper loading intervals, speed, and typical customer usage.
  • Page 17 Lexmark C792/X792 Color Product Study Guide Rev 2.1 Caller ID If subscribed to Caller ID from phone provider Manual Fax Disabled by default Fax from PC Supported using Postscript driver Fax Print Holding Only appears if hard drive installed Fax Logs...

  • Page 18: Scanner Specifications

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Scanner Specifications Scanner Scanner Type Color Flatbed Scanner with ADF Scan Technology Charge Coupled Device (CCD) Light Source Number of Light Sources 1 lamp per CCD Module Scanner ADF Single Pass, Duplex Scan, C-Path...

  • Page 19: Media Options

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Media Options Lexmark X792 Options 550-Sheet Drawer 2000-Sheet High Capacity Feeder Spacer Drawer Banner Media Tray [No Picture Available] 500-Sheet Staple Finisher (includes Stapler and Transport Unit) 500-Sheet Staple, Hole Punch Finisher...

  • Page 20: Maximum Paper Handling And Furniture Configurations

    Maximum Paper Handling and Furniture Configurations The authoritative tables of maximum Printer Paper Options/Furniture combinations are publicly available at www.lexmark.com/multifunctionprinters. Please refer to this information when purchasing additional paper input options for any of the C790 Series printers. 2000-sheet High...

  • Page 21: Supply Items

    Note: Starter cartridges cannot be swapped between printers for troubleshooting purposes as it will post a 32 Unsupported Cartridge Error message. Note: The Extra High Yield Toner cartridges for the X792 printer are NOT supported in the C792 printer. X792 Maintenance Items...

  • Page 22: Theory Of Operation

    Understanding the EP Process is the key to troubleshooting print quality problems. The page illustrates the EP Components in a cross-sectional of a C792x printer. The X792 printer has the same EP components as the C792 printer.

  • Page 23: C792 And X792 Ep Process Key Components

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 C792 and X792 EP Process Key Components Printhead (laser) Toner Cartridges Fuser Photoconductors Transfer Roll Transfer Rolls For Training Purposes Only 6/24/2011...

  • Page 24: Paper Transport System

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Paper Transport System C792 and X792 Print Engine Key Hardware Components Exit Rollers Output Bin Fuser Exit Rollers Duplex Roll 1 Fuser Duplex Roll 2 Transfer Roll Feed Rollers Duplex Roll 3...

  • Page 25: C792 And X792 Print Engine Key Sensor Components

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 C792 and X792 Print Engine Key Sensor Components Output Bin Redrive Bubble Sensor Sensor Fuser Exit Sensor Fuser Bubble Sensor “D1” Duplex Park Sensor “S2” Sensor Narrow Media Sensor / Nearly Narrow Media Sensor “D2”...

  • Page 26: C792 And X792 Print Engine Paper Path

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 C792 and X792 Print Engine Paper Path Simplex Paper Path Duplex Paper Path For Training Purposes Only 6/24/2011...

  • Page 27: X792 Scanner Key Components

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 X792 Scanner Key Components For Training Purposes Only 6/24/2011...

  • Page 28: X792 Scanner Paper Path

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 X792 Scanner Paper Path Simplex Paper Path Duplex Paper Path For Training Purposes Only 6/24/2011...

  • Page 29: C792 And X792 Paper Jam Locations

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 C792 and X792 Paper Jam Locations The C792 and X792 printer share the same paper jam codes and locations except for the Scanner. No scanner is present on the C792 series printers. Area...

  • Page 30: Operator Panel And Menus

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Operator Panel and Menus C792 Operator Panel Number Item Description Display Shows the status of the printer Home Lets you navigate back to the home screen Keypad Allows you to enter numbers, letters, or symbols...

  • Page 31: C792 Home Screen

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 C792 Home Screen Display item Description Allows you to temporarily change the primary language and reports on the display; they will remain in Change Language effect unless changed Allows you to create, organize, and save a set of bookmarks (URLs) into a tree view of folders and file...

  • Page 32: C792 Administrative (Customer) Menu

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 C792 Administrative (Customer) Menu For a complete listing of the printer menu tree, consult the User’s Guide. C792 Administrative (Customer) Menu Tree Supplies Paper Menu Reports Settings Cyan Cartridge Default Source Menu Settings Page...

  • Page 33: C792 Service Menus

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 C792 Service Menus Several hidden menus exist to configure advanced settings, troubleshoot problems or obtain additional printer information. The settings contained in these menus should not be changed unless it is specifically requested by the Service Manual or technical support. Changing the settings may cause improper operation of the printer.
  • Page 34 Lexmark C792/X792 Color Product Study Guide Rev 2.1 In the Administration (Customer) Menu, select the Network/Ports Menu. Select Standard Network. Select STD NET SETUP. The Network SE menu contains advanced network menu tools. Network SE Warning: Changing the settings within...

  • Page 35: X792 Operator Panel

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 X792 Operator Panel Number Item Description Display Shows the status of the printer • Off – The printer is off. • Blinking green – The printer is warming up, processing data, or printing.

  • Page 36: X792 Home Screen

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 X792 Home Screen The following page contains a detailed description of the Home Screen buttons and their functions. For Training Purposes Only 6/24/2011...

  • Page 37: X792 Home Screen Buttons

    PIN unlocks the printer control panel (touch screen and hard buttons). Depending on your configuration, not all buttons may appear. For a complete listing of Home Screen buttons and their functions, please see the Lexmark X792 User’s Guide. For Training Purposes Only...

  • Page 38: X792 Administrative (Customer) Menu

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 X792 Administrative (Customer) Menu For a complete listing of the printer menu tree, consult the User’s Guide. Not all menus are available for all models (ex. Wireless Menus). The menus commonly accessed are highlighted in blue.

  • Page 39: X792 Service Menus

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 X792 Service Menus Several hidden menus exist to configure advanced settings, troubleshoot problems or obtain additional printer information. The settings contained in these menus should not be changed unless it is specifically requested by the Service Manual or technical support. Changing the settings may cause improper operation of the printer.
  • Page 40 Lexmark C792/X792 Color Product Study Guide Rev 2.1 In the Administration (Customer) Menu, select the Network/Ports Menu. Select Standard Network. Select STD NET SETUP. The Network SE menu contains advanced network menu tools. Network SE Warning: Changing the settings within...

  • Page 41: Print Quality Diagnostic Tips

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Print Quality Diagnostic Tips General Terminology Before diagnosing print quality problems, take a moment to understand the concepts below. This will prevent confusion when diagnosing or escalating a problem. 1. Know your paper orientation when diagnosing a print quality issue.

  • Page 42: Print Quality Rules Of Thumb

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Print Quality Rules of Thumb If you encounter print quality problems, follow the tips below. Following these simple rules may solve the problem easily and quickly. 1. Always run a new Menu Settings, Device Statistics or other printer “configuration page” showing the: Page Count –...

  • Page 43: Paper Transport Diagnostic Tips

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Paper Transport Diagnostic Tips Paper Rules of Thumb Paper jams and feed problems occur for numerous reasons. Sometimes, failure of the equipment is the cause or it can be the result of other external factors. Before replacing parts for a feed problem, ask these questions: •...

  • Page 44: Image Orientation In The Tray

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Image Orientation in the Tray Depending on whether you are printing a simplex or duplex page, the orientation of the image will be different. It is important to understand the orientation of the page when determining if there is a problem with skew from the duplex unit.

  • Page 45: Fax Print Quality Diagnostic Tips

    Below is a chart outlining the troubleshooting steps to determine if the sending fax, receiving fax or phone line is the problem source. Please keep in mind that this chart only covers general print quality issues. For more detailed information, it is recommended that you complete Lexmark’s online course called MFP Overview.

  • Page 46: Sending Fax Machine At Fault

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Document Print Receiving Fax Document Scan Sending Fax Sending Fax Machine at Fault Problem Description: • Problems with print quality at the receiving fax, such as corrupt images, lines in the image, top/bottom cut off.

  • Page 47: Receiving Fax Machine At Fault

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Receiving Fax Machine at Fault Problem Description: • Problems with print quality at the receiving fax, such as corrupt images, lines in the image, top/bottom cut off. • When you test the Receiving Fax by printing the Self Test pages you can reproduce the print quality problem.

  • Page 48: Complex Parts And Procedures

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Complex Parts and Procedures Parts listed in this section are complex for various reasons and are tagged with one or more of the following icons to explain its complexity: • High degree of technical difficulty in removing/replacing the part.

  • Page 49: Printhead Replacement

    (or other printhead error). For detailed Instructions, see Printhead removal, installation, and alignment in Section 4: Repair of the C792 or X792 Service Manual. In addition, a video demonstrating the alignment is available on Infrature, the Knowledgebase and as a Technical Service Bulletin.

  • Page 50: Flatbed Scanner Assembly

    When a new System Board is installed, the Lexmark default eSF applications and settings are loaded. The best practice is for an administrator to have their eSF applications and settings backed up prior to encountering a problem.
  • Page 51 Lexmark C792/X792 Color Product Study Guide Rev 2.1 To back up the solutions, do the following: 1. Turn off the printer. 2. Press and hold 3, 4 and 6. 3. Turn on the printer. 4. Release the buttons when the splash screen appears.
  • Page 52 Lexmark C792/X792 Color Product Study Guide Rev 2.1 7. Click on Solutions (don’t click Import/Export – the explanation is at the end) 8. Click on Embedded Solutions For Training Purposes Only 6/24/2011...
  • Page 53 Lexmark C792/X792 Color Product Study Guide Rev 2.1 9. Select each application individually by clicking on the name (we’ll use Forms and Favorites in this example) 10. Click on Export to create a file of that application’s settings 11. If the Web page cannot be accessed, or an error persists despite trying to boot in Invalid Engine code mode, then there is no way to backup the eSF apps.

  • Page 54: Ep Drive/Exit Cooling Duct

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 12. Don’t Use the “Global” Import/Export method to back up the eSF applications and settings. There is a size limit of 128kb on the export file. 13. Customers with a large number of applications or settings may exceed the file size limit and have information truncated in the exported file.

  • Page 55: Mirrored Nvram Components

    These components mirror the critical NVRAM settings for the printer. If you have not already done so, complete the online course Mirrored NVRAM from Lexmark’s online learning site. Warning! If you must use one the components listed above as a method of troubleshooting, boot the printer into Diagnostic mode only.

  • Page 56: Other Special Instructions

    The instructions listed in this section may need to be performed under certain circumstances such as repair, troubleshooting or other reasons. Cleaning the MFP Document Glass – X792 Only It is important to clean the MFP on a regular basis (about once a month depending on usage) to keep it functioning properly.

  • Page 57: Security Reset Jumper

    Rev 2.1 Security Reset Jumper The C792 and X792 printers have a Security Reset Jumper on the System Board which can be used in the event the Administrator password is forgotten (see pictures below). The Security Jumper effect can be configured through the Security Menu on printer’s web page or menus. The choices for the Security Reset Jumper effect are listed below: •...
  • Page 58 Lexmark C792/X792 Color Product Study Guide Rev 2.1 The movement of the jumper from position A to position B (or position B to position A) triggers the reset, NOT the specific positions. This differs from a CMOS reset on a computer.

  • Page 59: Recovery Mode

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Recovery Mode This is a special mode in which the printer can be booted in case a code flash is interrupted (by turning it off or power failure) and the printer will no longer boot, posts a 959 or hangs during boot.
  • Page 60 Lexmark C792/X792 Color Product Study Guide Rev 2.1 • Skew Specification – Determine if the skew on the page is within specification. From the Diagnostics menu, navigate to REGISTRATION > Quick Test to print the registration page. Measure the difference in the distance (in millimeters) down the page of the far left and far right lines.
  • Page 61 Lexmark C792/X792 Color Product Study Guide Rev 2.1 Check the skew measurements in this table to see if the printer meets the spec. Skew Specification - Simplex Left Vertical – Right Vertical – Top – Paper Bottom – Paper Simplex...
  • Page 62 Lexmark C792/X792 Color Product Study Guide Rev 2.1 • Uneven Surface – Examine the printer to see if it sits on a sturdy, even plane with all four feet securely on the surface. If not, the printer frame will torque and cause print skew or other hardware failures.
  • Page 63 Lexmark C792/X792 Color Product Study Guide Rev 2.1 • Catch Points in the Tray – Check the deflector on the left side of the paper tray for nicks or damage that may cause the paper to catch and skew as it is fed from the tray.
  • Page 64 Lexmark C792/X792 Color Product Study Guide Rev 2.1 • Tray Bias – As the tray is inserted into the printer, is it maneuvered into a fixed position by several plastic bias points and a Bias Spring/Roller. If one of these parts is broken, the tray will not be in its proper position relative to the pick rolls and the paper will not feed properly.
  • Page 65 Lexmark C792/X792 Color Product Study Guide Rev 2.1 • Autocompensator – Several parts of the Autocomp could cause skew: Check the pick tires for wear. In addition, see if one tire is more worn than the other or if there are uneven wear patterns.
  • Page 66 Lexmark C792/X792 Color Product Study Guide Rev 2.1 • Staging Deflector and Duplex Paper Guide – As the paper feeds out of the Tray, it passes between the Staging Deflector and Duplex Paper Guide. Open the left side door and check the Staging Deflector for catch points, broken sensor flags and proper placement.
  • Page 67 Lexmark C792/X792 Color Product Study Guide Rev 2.1 • Reference Edge – This printer does not use registration rolls to adjust paper prior to entering the EP Process; it uses a Reference Edge to adjust skew as the paper travels to the 2 Transfer Roll and ITU.
  • Page 68 Lexmark C792/X792 Color Product Study Guide Rev 2.1 Check the mounting screws on the Reference Edge to make sure they are secure. DO NOT turn the skew adjustment screw! (The picture below is shown with the Staging Deflector Removed). •...

  • Page 69: Print Engine Skew Adjustment

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Skew caused by the Printhead typically looks different than skew from the rest of the printer. Look at the examples below: Printer Skew – the image is Printhead Skew – the image is rotated on the page shifted into a Rhomboid shape.
  • Page 70 Lexmark C792/X792 Color Product Study Guide Rev 2.1 3. If the left and right top alignment marks are not parallel with the top edge of the page, then turn the adjustment screw on the Reference Edge. • Turn the screw clockwise to move the left marks up the page, •...

  • Page 71: Scanner Skew

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Scanner Skew It is important to rule out the possibility of a print engine skew problem or uneven paper before making adjustments on the scanner unit. • Paper Squareness – Before deciding if the printer or scanner is the cause of skewing, it is very important to check the paper to see if it is cut squarely.
  • Page 72 Lexmark C792/X792 Color Product Study Guide Rev 2.1 Below, the left page shows that the print is skewed from the printer. You will need to address the printer skew before attempting to adjust the scanner. The right page, however, is perfectly aligned.

  • Page 73: Scanner Skew Adjustment

    Lexmark C792/X792 Color Product Study Guide Rev 2.1 Scanner Skew Adjustment The scanner skew measurements will vary somewhat between test pages. Make sure that you print several pages before determining if the scanner is within acceptable skew limits. Things of which you should be familiar: •...
  • Page 74 Print skew, Scan skew and Copy skew all use the same nomenclature for direction of rotation. • Positive skew is counter-clockwise rotation • Negative skew is clockwise rotation. See the Lexmark X792 Service Manual for detailed guidelines on adjusting scanner skew. For Training Purposes Only 6/24/2011...

This manual is also suitable for:

C792 family

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