Lexmark C 950 Service Manual
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Diagnostic information 2-251 5058-030 Go Back Previous Next High frequency bands StepCheckYesNo 1Check the four PC cartridges for proper installation. Check the PC cartridge connections. Are the PC cartridge connections free of excess wear and contamination? Go to step 2.Correct and clean contaminated pins, or replace the appropriate PC cartridge or connector. 2Replace the four developer housings and four developer carriers. Go to “Developer housing (C) removal” on page 4-48, “Developer housing (K) removal” on page 4-54, “Developer housing (M) removal” on page 4-59, “Developer housing (Y) removal” on page 4-65,and “Developer carrier removal and replacement” on page 4-45. Does the problem remain? Go to step 3.Problem resolved. 3Replace the printhead. Go to “LED printhead removal” on page 4-99. Does the problem remain? Go to step 4.Problem resolved. 4Check the upper printer engine PCBA for proper connectivity. Disconnect and reconnect all appropriate cables. Replace the upper printer engine PCBA. Go to “Upper printer engine PCBA removal” on page 4-184. Perform a print test. Go to “PRINT TESTS” on page 3-22. Does the problem continue? Replace the RIP PCBA. Go to “RIP PCBA removal” on page 4-147. Problem resolved.
2-252 Service Manual 5058-030 Go Back Previous Next Diagonal banding StepCheckYesNo 1Perform a print quality suite test to produce solid fill for each color. Replace the appropriate developer unit housing for the color that is producing the diagonal banding. Go to “Developer housing (C) removal” on page 4-48, “Developer housing (K) removal” on page 4-54, “Developer housing (M) removal” on page 4-59, or “Developer housing (Y) removal” on page 4-65. Did this fix the problem? Problem resolvedContact the next level of support.
Diagnostic aids 3-1 5058-030 Go Back Previous Next 3. Diagnostic aids This chapter explains the tests and procedures to identify printer failures and verify if repairs have corrected the problem. User operator panel, menus and messages Understanding the operator panel CalloutItemFunction 1Display Views printing options as well as status and error messages 2HomeNavigates back to the home screen 3KeypadEnters numbers, letters, or symbols 4Sleep buttonEnables Sleep Mode or Hibernate Mode • A short press will enable Sleep Mode. • A long press will enable Hibernate Mode. Note: Touching the screen or pressing any hard button will cause the printer to wake from Sleep Mode or Hibernate Mode. 5 Indicator lightViews the status of the printer. • Off—The printer is off. • Blinking green—The printer is warming up, processing data, or printing. • Solid green—The printer is on, but idle. • Solid red—Operator intervention is needed. • Amber—The printer enters Sleep Mode or Hibernate Mode. 6Stop/CancelStops all printer activity. Note: A list of options is displayed once Stopped appears on the display. 7 USB portConnects a flash drive into the printer USB port. Note: Only the front USB port supports flash drives. 1@!2ABC3DEF 4GHI5JKL6MNO 7PQRS8TUV9WXYZ 0 # 1234 5 67
3-2 Service Manual 5058-030 Go Back Previous Next Understanding the home screen When the printer is turned on, the display shows a basic screen, referred to as the home screen. Touch the home screen buttons and icons to initiate an action such as copying, faxing, or scanning; to open the menu screen; or to respond to messages. Note: Your home screen, icons, and buttons may vary depending on your home screen customization settings, administrative setup, and active embedded solutions. CalloutIcon/ButtonFunction 1Change LanguageChanges the primary language of the printer. 2BookmarksCreates, organizes, and saves a set of bookmarks (URLs) into a tree view of folders and file links. Note: The tree view does not include bookmarks created within Forms and Favorites, and the ones in the tree are not usable from within Forms and Favorites. 3 Held JobsDisplays all current held jobs. 4USB or USB ThumbdriveViews, selects, or prints photos and documents from a flash drive. Note: This icon appears only when you return to the home screen while a memory card or flash drive is connected to the printer. 5 MenusAccesses printer menus. Note: These menus are available only when the printer is in the Ready state. 6 Status message bar• Shows the current printer status such as Ready or Busy. • Shows printer conditions such as Fuser missing or Cartridge Low. • Shows intervention messages and the instructions on how to clear them. 7Status/ Supplies• Displays a warning or error message whenever the printer requires intervention to continue processing. • Accesses the messages screen for more information on the message, and how to clear it. 8TipsOpens a context-sensitive Help information on the touch screen. 123 5678 4
Diagnostic aids 3-3 5058-030 Go Back Previous Next Menu map This menu map identifies menus available to the user. The diagram shows the menus on the operator panel and items available under each menu. Some menu items or values are displayed only if a specific option or feature is installed on the printer. Other menu items may be effective only for a particular printer language. The values can be selected at any time, but they affect printer function only when the user has the optional equipment, feature on your model, or the specified printer language. Supplies Cyan Cartridge Magenta Cartridge Yellow Cartridge Black Cartridge Cyan Photoconductor Unit Magenta Photoconductor Unit Yellow Photoconductor Unit Black Photoconductor Unit Waste Toner Bottle Fuser Transfer Module Staple Cartridge Hole Punch Box Paper Menu Default Source Paper Size/Type Configure MP Substitute Size Paper Texture Paper Weight Paper Loading Custom Types Custom Names Custom Bin Names Universal Setup Bin Setup Reports Menu Settings Page Device Statistics Network Setup Page Network [x] Setup Page Profiles List Print Fonts Print Directory Asset Report Settings General Settings Flash Drive Setup Job Accounting Finishing Quality Utilities XPS PDF PostScript PCL Emul HTML Image PictBridge Security Miscellaneous Security Settings Confidential Print Disk Wiping Security Audit Log Set Date and Time Network/Ports Active NIC Network* Standard USB Parallel [x] Serial [x] SMTP Setup Help Print All Guides Color Quality Print Quality Printing Guide Media Guide Print Defects Guide Menu Map Information Guide Connection Guide Moving Guide Supplies Guide Note: *Depending on the printer setup, this menu appears as Standard Network, Wireless Network, or Network [x].
3-4 Service Manual 5058-030 Go Back Previous Next Accessing service menus Access the following menus to identify problems with the printer and run diagnostic tests. Configuration Menu 1. Turn off the printer. 2. Press and hold the 2 and 6 buttons simultaneously. 3. Turn on the printer. 4. Release the buttons after 10 seconds.The Configuration Menu group contains a set of menus, settings, and operations which are infrequently required by a user. Generally, the options made available in this menu group are used to configure a printer for operation. See “Configuration Menu” on page 3-5 for more information. Diagnostics Menu 1. Turn off the printer. 2. Press and hold the 3 and 6 buttons simultaneously. 3. Turn on the printer. 4. Release the buttons after 10 seconds.The Diagnostics Menu group consists of menus, settings, and operations that are used to diagnose various printer problems. Note: While the Diagnostics Menu Group is active, all host interfaces are offline. See “Diagnostics Menu” on page 3-14 for more information. Invalid engine mode 1. Turn off the printer. 2. Press and hold the 3, 4, and 6 buttons simultaneously. 3. Turn on the printer. 4. Release the buttons after 10 seconds.This mode is used if the machine has invalid code and needs the correct code loaded. After entering this mode, the firmware code can be updated. Recovery mode 1. Turn off the printer. 2. Press and hold the 7, 2, and 8 buttons simultaneously. 3. Turn on the printer. 4. Release the buttons after 10 seconds.This mode will allow the printer to boot from a secondary set of instructions to allow a code flash to the printer. Code can be flashed from a PC via USB. Network SE Menu 1. Touch . 2. Navigate to Networks/Ports > Standard Network > Std Network Setup. 3. Press and hold 6, 7, and 9 simultaneously.This menu contains settings for fine tuning the communication settings for the network interfaces and protocols. Service Engineer (SE) MenuFrom a Web browser on a host PC, add /se to the printer IP address.See “Service Engineer (SE) Menu” on page 3-26.
Diagnostic aids 3-5 5058-030 Go Back Previous Next Configuration Menu Entering Configuration Menu 1.Turn off the printer. 2.Press and hold the 2 and 6 buttons simultaneously. 3.Turn on the printer. 4.Release the buttons after 10 seconds. Available settings Settings appear on the LCD in the order shown: Reset Maintenance Counter See “Reset Maintenance Counter Value” on page 3-11. Black Only Mode See “Black Only Mode” on page 3-7. Print Quality Pages See “Print Quality Pages” on page 3-10. Reports See “Reports” on page 3-10. Color Trapping See “Color Trapping” on page 3-7. Tray Insert Msg See “Tray Insert Message Delay” on page 3-12. SIZE SENSING See “Size Sensing” on page 3-12. Exit Tray 2 See “Exit Tray 2” on page 3-8. Panel Menus See “Panel Menus” on page 3-10. PPDS Emulation See “PPDS Emulation” on page 3-10. Download Emuls Factory Defaults See “Factory Defaults” on page 3-8. Energy Conserve See “Energy Conserve” on page 3-8. Auto Align Adj See “Automatic Alignment Adjust Calibration” on page 3-6. Paper Prompts See “Paper Prompts” on page 3-10. Envelope Prompts See “Envelope Prompts” on page 3-8. Action for Prompts See “Action for prompts” on page 3-6. Jobs On Disk See “Jobs on Disk” on page 3-9. Disk Encryption See “Disk Encryption” on page 3-7. Erase All Information on Disk See “Erase all Information on Disk” on page 3-8. Wipe All Settings See “Wipe All Settings” on page 3-13. Font Sharpening See “Font Sharpening” on page 3-9. Require Standby See “Require Standby” on page 3-11. Short-edge Printing See “Short-edge Printing” on page 3-11. UI Automation See “UI Automation” on page 3-12.
3-6 Service Manual 5058-030 Go Back Previous Next Action for prompts This setting enables users to determine which input source would receive paper-related or envelope-related change prompts when they occurred. Regardless of the target source, the device always requires some type of user assistance to resolve the change prompt (examples: pushing a button to ignore the prompt and changing the source’s installed media). However, this setting gives a user the option of having the device resolve change prompt situations without requiring any user assistance. To change this setting: 1.From the Configuration Menu, navigate to Action for prompts. 2.Touch or to change the setting. 3.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any changes. When set to Prompt user, the device behaves like the past implementation. When a change prompt occurs, the device stops printing, posts the change prompt to the target source, and waits for the user to select an action before continuing. When set to Continue, the device automatically assumes that the user selects Continue every time a change prompt is encountered. Likewise, when the device is set to Use Current, all change prompts will perform as if Use Current was selected by the user. Automatic Alignment Adjust Calibration This setting is for performing Toner Patch Sensing (TPS):a diagnostic mechanism that automatically adjusts the printer’s toner density. When TPS executes, the printer generates toner patches on the belt and then uses these to calculate if necessary, the appropriate amount of adjustment.When an event initiates a TPS operation, the device performs a toner density calibration. To change this setting: 1.From the Configuration Menu, navigate to Automatic Alignment Adjust Calibration. 2.Touch or to change the setting. 3.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any changes. Key Repeat Initial Delay See “Key Repeat Initial Delay” on page 3-9. Key Repeat Rate See “Key Repeat Rate” on page 3-9. Clear Custom Status See “Clear Custom Status” on page 3-7. USB Speed See “USB Speed” on page 3-13. Automatically Display Error Screens See “Automatically Display Error Screens” on page 3-7. Booklet Adjustments See “Booklet Adjustments” on page 3-7. Exit Config Menu
Diagnostic aids 3-7 5058-030 Go Back Previous Next Automatically Display Error Screens To change this setting: 1.From the Configuration Menu, navigate to Automatically Display Error Screens. 2.Touch or to change the setting. 3.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any changes. Black Only Mode This mode enables a user to force the printer to always print color content in grayscale. Turning this setting On is equivalent to setting Print Mode to Black Only; the printer will ignore any PJL or datastream commands that attempt to change the Print Mode setting. If this setting is Off, then the printer will print color content as normal. To change this setting: 1.From the Configuration Menu, navigate to Black Only Mode. 2.Touch or to change the setting. 3.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any changes. Booklet Adjustments The Booklet Adjustment menu enables the user to correct any folding overlap or skew overlap errors that occur when the device performs folding or saddlestitch finishing on a job that uses a specific combination of media size and total number of sheets (example: a 2-sheet, Letter-sized job). Clear Custom Status Executing this operation erases any strings that have been defined by the user for the Default or Alternate custom messages. Color Trapping Color trapping is used to compensate for mechanical misregistration in the printer. When small black text or fine black lines are being rendered, the printer checks to see if they are being rendered on top of a colored background. Rather than remove the color from beneath the black content, the printer leaves the color around the edge of the text or line. In this way, the hole in the colored region is reduced in size which prevents the characteristic white gap that is caused by misregistration. The values 1 through 5 indicate the amount of color that will remain beneath the black content. The more inaccurate the registration setting, the higher this setting will need to be adjusted. To change this setting: 1.From the Configuration Menu, navigate to Color Trapping. 2.Touch or to change the value. 3.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any changes. Disk Encryption This setting controls whether the device encrypts the information that it writes to its hard disk (when installed).
3-8 Service Manual 5058-030 Go Back Previous Next To change this setting: 1.From the Configuration Menu, navigate to Disk Encryption. 2.Select Disable or Enable. Energy Conserve This setting affects the values that display in the “Sleep Mode” setting. With Energy Conserve set to Off, this menu displays Disabled which, when selected, deactivates the Sleep feature. When Energy Conserve is set to On, Disabled does not appear in the Sleep Mode menu. To change this setting: 1.From the Configuration Menu, navigate to Energy Conserve. 2.Touch or to change the setting. 3.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any changes. Envelope Prompts This setting controls the input source to which a device will direct an envelope change prompt. The device displays envelope prompts based on the size of the envelope requested by the user, not on the envelope type. To change this setting: 1.From the Configuration Menu, navigate to Envelope Prompts. 2.Touch or to change the setting. 3.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any changes. Erase all Information on Disk To run this operation: 1.From the Configuration Menu, navigate to Erase all Information on Disk. 2.Touch Single Pass Erase or Multiple Pass Erase. Exit Tray 2 To change this setting: 1.From the Configuration Menu, navigate to Exit Tray 2. 2.Touch or to change the setting. 3.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any changes. Factory Defaults Warning: This operation cannot be undone. This setting enables a user to restore all of the device’s settings to either the network settings (on network models only) or to the base device settings. To restore the Factory Default settings: 1.From the Configuration Menu, navigate to Factory Defaults. 2.Touch Restore Base to restore all non-critical base printer NVRAM settings.