Lexmark C 950 Service Manual

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3.Touch Restore STD Net to restore all network NVRAM settings. 
4.Touch Restore LES to remove all Lexmark Embedded Solution applications.
After this setting is changed, the device automatically performs a POR, and restores the appropriate settings to 
their factory default values.
Font Sharpening
This setting allows a user to set a text point-size value from 0 to 150. For all font sizes in a print job equal or 
below the text point-size value set, the high frequency screens will be used. For example, if this setting’s value is 
“24” then all fonts sized 24 points or less will use the high frequency screens. The panel displays a numeric 
keypad interface to allow the user to adjust this setting’s value.
To change this setting:
1.From the Configuration Menu, navigate to Font Sharpening.
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.
This setting only affects the following emulators: PostScript, PCL, PDF, XL, and XPS.
Jobs on Disk
This setting is for clearing jobs that remain on the disk due to buffering. 
To perform this function:
1.From the Configuration Menu, navigate to Jobs on Disk.
2.Touch Do Not Delete or Delete.
Key Repeat Initial Delay
The value of this setting determines the initial length of delay before a key could repeat.
To change this setting:
1.From the Configuration Menu, navigate to Key Repeat Initial Delay.
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.
Key Repeat Rate
The value of this setting determines the number of repeating key presses allowed per second.
To change this setting:
1.From the Configuration Menu, navigate to Key Repeat Rate.
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. 
						

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Panel Menus
To change this setting:
1.From the Configuration Menu, navigate to Panel Menus.
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.
Paper Prompts
This setting determines the input source to which the device will direct a change paper prompt. The device 
displays paper prompts based on the size of the paper requested by the user, not on the paper type.
To change this setting:
1.From the Configuration Menu, navigate to Paper 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.
PPDS Emulation
The value of the PPDS Emulation menu item determines if a device can recognize and use the PPDS 
datastream.
To change this setting:
1.From the Configuration Menu, navigate to PPDS Emulation.
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.
Print Quality Pages
See “PRINT TESTS” on page 3-22.
Reports
This menu contains informational reports that are helpful when servicing a device.
Menu Settings Page
Print the menu settings pages to list the customer settings and to verify printer options are installed correctly. It 
is helpful to print the customer settings before you restore factory defaults or make major changes.
To print the menu settings:
1.From the Configuration Menu, navigate to Reports > Menu Settings Page.
2.Printing Menu Settings Page appears, and the pages print.
Event Log
This report lets the system support person print a limited set of the information contained in the Diagnostics 
Menu version of the printed Event Log. For a sample of a printout, see “Print the Event Log” on page 3-17. 
The limited Configuration log and the full Diagnostics log printed versions show the same operator panel 
messages when they print and follow the same layout guidelines.  
						

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To print the event log:
1.From the Configuration Menu, navigate to Reports > Event Log. 
2.Printing EVENT LOG appears, and the pages print.
Require Standby
To change this setting:
1.From the Configuration Menu, navigate to Require Standby.
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.
Reset Maintenance Counter Value
This setting enables users to reset the selected Maintenance Count value to zero.
To reset:
1.From the Configuration Menu, navigate to Reset Maintenance Counter Value.
2.From the options displayed, select the maintenance kit to reset.
3.Touch Yes to reset the maintenance counter value. Touch No or Back to return to the previous menu.
Short-edge Printing
This setting enables a user to permit or to prohibit the printing of short-edge oriented paper on the device. The 
device’s default paper feed orientation is long-edge fed (LEF). However, in order to support added finishing 
functionality, the device also supports printing with paper fed in the short-edge (SEF) orientation.
If the setting Disabled (default) is selected, letter and A4 paper can only be fed long-edge. If they are fed short-
edge, a prompt will ask you to use the correct paper size. When the setting is Enabled, you can feed paper 
either long-edge or short-edge. 
						

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To change this setting: 
1.From the Configuration Menu, navigate to Short Edge Printing.
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.
Size Sensing
This setting controls whether the device automatically registers the orientation, type, and size of paper installed 
in an input source equipped with size-sensing hardware.
Tray [x] sensing
By turning the tray [x] sensing setting to Auto, every input option equipped with size sensing hardware 
automatically registers what size of paper it contains. When this setting is turned Off, the printer ignores the size 
detected by the hardware and treats the input source as a non-sensing source. The media size can be set by the 
operator panel or the data stream.
To change this setting:
1. From the Configuration Menu, navigate to SIZE SENSING. The screen displays each size sensing 
equipped input source and its current Size Sensing setting.
2. Select the appropriate input source.
3. Touch  or  to change the setting. 
4.Touch Submit to save the setting, or touch Back to return to the Configuration Menu without saving any 
changes.
A5/Statement
Due to engine limitations, Trays 1 through 4 cannot simultaneously sense A5- and statement-size paper. The 
value of this setting determines which of the two paper sizes these trays will sense automatically. This setting 
will apply to all automatic trays, but not to the MP Feeder. The MP Feeder can support these paper sizes 
regardless of the value of this setting.
B5/Executive
Due to engine limitations, Trays 1 through 4 cannot simultaneously sense executive and JIS-B5-size paper. The 
value of this setting determines which of the two paper sizes these trays will sense automatically. This setting 
will apply to all automatic trays, but not to the MP Feeder. The MP Feeder can support these paper sizes 
regardless of the value of this setting. 
Tray Insert Message Delay
This setting determines how many seconds the panel will display Tr ay  I n se rt after a user has inserted a tray into 
the printer.
To change this setting:
1.From the Configuration Menu, navigate to Tray Insert Message Delay.
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.
UI Automation
When set to Enable, this setting allows external developers to measure the stability of their applications by 
performing their own automated testing against the device. 
						

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To change this setting:
1.From the Configuration Menu, navigate to UI Automation.
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.
USB Speed
To change this setting:
1.From the Configuration Menu, navigate to USB Speed.
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.
Wipe All Settings
The purpose of this setting is to make any sensitive information that may exist on the device’s storage 
completely indecipherable.
To run this setting:
1.From the Configuration Menu, navigate to Wipe All Settings.
2.The screen displays the following messages
Erase all information on the hard disk?  
This will erase all settings, solutions, and jobs on this device.
3.Touch Yes to erase, or touch No to cancel the operation and return to the Configuration Menu without 
saving any changes. 
						

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Diagnostics Menu
Entering Diagnostics Menus
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.
Available tests
Tests appear on the LCD in the order shown:
SENSOR TESTS
See “SENSOR TESTS” on page 3-23.
PRINTER SENSOR TESTS
See “PRINTER SENSOR TESTS” on page 3-23.
FINISHER SENSOR TESTS
See “FINISHER SENSOR TESTS” on page 3-24.
MOTOR TESTS
See “MOTOR TESTS” on page 3-20.
PRINTER MOTOR TESTS
See “PRINTER MOTOR TESTS” on page 3-20.
FINISHER MOTOR TESTS
See “FINISHER MOTOR TESTS” on page 3-21.
PRINT TESTS
See “PRINT TESTS” on page 3-22.
Tray [x]
See “[Input Source] Print Test” on page 3-22.
Multi-Purpose Feeder
Print Quality Pages
See “Print Quality Pages (Diagnostics Menu)” on 
page 3-22.
Print defects guide
HARDWARE TESTS
See “HARDWARE TESTS” on page 3-18.
Panel Test
See “Panel Test” on page 3-19.
Button Test
See “Button Test” on page 3-18.
DRAM Test
See “DRAM Test” on page 3-19.
Serial 1 Wrap
See “Serial Wrap 1 Test” on page 3-19.
USB HS Test Mode
DUPLEX TESTS
See “DUPLEX TESTS” on page 3-16.
Quick Test
See “Quick Test (Duplex)” on page 3-16.
INPUT TRAY TESTS
See “INPUT TRAY TESTS” on page 3-19.
Feed Tests
See “Feed Tests (Input Tray)” on page 3-19.
OUTPUT BIN TESTS
See “OUTPUT BIN TESTS” on page 3-21.
Feed Tests
See “Feed Tests (Output Bin)” on page 3-21.
Feed To All Bins
See “Feed To All Bins” on page 3-22. 
						

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FINISHER TESTS
See “FINISHER TESTS” on page 3-18.
Staple Test
See “Staple Test” on page 3-18.
Hole Punch Test
See “Hole Punch Test” on page 3-18.
Feed Test
See “Feed Test (Finisher)” on page 3-18.
DEVICE TESTS
See “DEVICE TESTS” on page 3-16.
Quick Disk Test
See “Quick Disk Test” on page 3-16.
Disk Test/Clean
See “Disk Test/Clean” on page 3-16.
Flash Test
See “Flash Test” on page 3-16.
PRINTER SETUP
See “PRINTER SETUP” on page 3-22.
Defaults
See “U.S. / Non-U.S. Defaults” on page 3-23.
Prt Color Pg Count
See “Mono and Color Page Count” on page 3-22.
Prt Mono Pg Count
Perm Page Count
See “Permanent Page Count” on page 3-23.
Serial Number
See “Serial Number” on page 3-23.
Model Name
Configuration ID
See “Configuration ID” on page 3-22.
Reset Color Cal
See “Reset Color Calibration” on page 3-23.
Par 1 Strobe Adj
See “Parallel Strobe Adjustment (all parallel ports)” on 
page 3-22.
REPORTS
See “REPORTS” on page 3-23.
Menu Settings Page
EVENT LOG
See “EVENT LOG (Diagnostics Menu)” on page 3-17.
Display Log
See “Display the Event Log” on page 3-17.
Print Log
See “Print the Event Log” on page 3-17.
Clear Log
See “Clear the Event Log” on page 3-17.
DEVELOPMENT MENUDo not use. For development use only.
Debug Port
Print History
ATC SENSOR FAILURE CLEAR
ENGINE ADJUST
ATC Sensor Adjust Values
Booklet Fold Adj
Finisher Config
EXIT DIAGS 
						

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DEVICE TESTS
Flash Test 
This test appears only when a non-defective flash memory is installed. Data is written to the flash card and read 
back to check the accuracy. This test destroys all data stored on the flash device.
Warning:  This test deletes all data stored on the flash device. After the test is over, reformat the flash using 
Format Flash in the customer Utilities Menu.
To perform this test:
1.From the Diagnostics Menu, navigate to DEVICE TESTS > Flash Test.
2.Contents will be lost. Continue? appears. Touch Yes to continue, or touch No to return to DEVICE TESTS.
3.Flash Test Testing... appears while the test is running.
4.When the test is complete, F l a s h  Te s t  Te s t  P a s s e d or F l a s h  Te s t  Te s t  F a i l e d appears.
Quick Disk Test
This menu item appears only when a non-defective disk is installed. This test performs a non-destructive read/
write on one block per track on the disk. Once executed, the test cannot be canceled.
To perform this test:
1.From the Diagnostics Menu, navigate to DEVICE TESTS > Quick Disk Test.
2.Quick Disk Test Testing DO NOT POWER OFF appears.
3.When the test is complete, Quick Disk Test Test Passed or Quick Disk Test Test Failed appears.
Disk Test/Clean
Warning:  This test performs a low-level format of the hard disk which will destroy all data and should never be 
performed on a good disk. This test will only be used when the disk contains bad data and is 
unusable.
Note:  This process does not erase any information stored on the device’s NAND.
To perform this test:
1.From the Diagnostics Menu, navigate to DEVICE TESTS >  Disk Test/Clean.
2.Contents will be lost. Continue? appears. Touch Yes to continue, or touch No to return to DEVICE TESTS.
3.Once the test starts, it cannot be stopped.
4.When the test is complete, Disk Test/Clean Test Passed or Disk Test/Clean Test Failed appears.
DUPLEX TESTS
Quick Test (Duplex)
The Duplex Quick Test is used to verify the correct placement of the top margin on the back side of a duplexed 
page. When a user selects this setting, the device prints a duplexed version of the Quick Test page that can be 
used to adjust the duplex top margin setting. 
						

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To run the Quick Test:
1. From the Diagnostics Menu, navigate to DUPLEX TESTS.
2. Touch Quick Test.
3. Touch Single or Continuous. Quick Test Printing... appears on the LCD.
•The single Duplex Quick test cannot be canceled.
•The printer attempts to print the Quick Test Page from the default paper source. If the default paper 
source only supports envelopes, then the page is printed from Tray 1.
•Check the Quick Test Page for the correct registration between the placement of the first scan line on 
the front and back side of a duplexed sheet.
The single test stops automatically when a single duplex sheet is printed, and the continuous test continues until 
you press Stop.
EVENT LOG (Diagnostics Menu)
The Event Log is a diagnostic tool that tracks the occurrence of various critical events in a device’s functional 
history, such as paper jams and firmware updates.
Clear the Event Log
Use Clear the Event Log to remove the current information in the Event Log. This affects both the viewed log 
and the printed log information.
1.From the Diagnostics Menu, navigate to EVENT LOG > Clear Log.
2.Touch YES to clear the Event Log, or NO to exit the Clear Log menu.
Display the Event Log
Log entries are displayed, appearing in chronological order beginning with the most recent entry at the top of the 
list.
To view the event log, navigate to EVENT LOG > Display Log. If additional log entries exist, touch   to view 
the next log entries. Continue following this procedure until you reach the end of the logged entries. To view 
earlier log entries, touch  .
Touch Back to return to the EVENT LOG menu.
Print the Event Log
The Event Log printed from DIAGNOSTICS includes:
•Detailed printer information, including code versions
•Time and date stamps 
						

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•Page counts for most errors
•Additional debug information in some cases
The printed event log can be faxed to your next level of support for verification or diagnosis.
To print the event log, navigate to EVENT LOG > Print Log.
FINISHER TESTS
Feed Test (Finisher)
This test feeds one sheet of media from the device’s default input source to a finisher output bin. The device can 
perform this test using any paper size that is supported by the finisher.
Hole Punch Test
This test is used to verify that media can be fed to a finisher output bin and then hole-punched. No information is 
printed on the feed test pages since the printhead LED isn’t engaged during this test. Eight sheets of paper are 
fed, and then the pages are hole-punched with a 2-hole, a 3-hole or a 4-hole pattern depending on the selected 
punch test. Although the source searching algorithm may result in paper being fed from another source, media 
initially is requested from the default input source and then is transported to the finisher output bin.
Staple Test
This test is used to verify the functioning of the finisher’s staple mechanism.
HARDWARE TESTS
Button Test
The Button Test is used to verify the operation of each button on the operator panel.
Model and
Serial number
Printer information
Panel display
when error occurred
Page count
Earliest error codeLexmark x54x (s/n: 98P104V)