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Lexmark C750
Release Notes
August 2001
www.lexmark.com
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Aligning the image transfer unit
For best print quality , make sure you align the image transfer unit after replacement or if colors print too
lightly.
To align the image transfer unit:
1 On the printer operator panel, press and hold Select and Return while turning the printer on.
2 When Performing Self Test appears, release the buttons.
3 When Config Menu appears, press Menu until you see ITU Alignment, and then press
Select.
A test page prints.
4 Look at the test page and select a number value f or each of the twelve settings where the color
is most intense. Select a value in the range of -10 to +10 to the nearest .5 increment. For
example, you may find for the Test A alignment that your color is most intense at the 4.5 value.
It is helpful to write all twelve alignment values in the lines provided on the test page before
going on to step e. You must select a value for all twelve settings.
5 When you see Test A Alignment, press Menu until you find the number value you want to
use, and then press
displays.
Select. A Saved message briefly appears and then the next test alignment
6 After you have completed all twelve settings, Config Menu appears. Press Menu until you see
Exit Config Menu, and then press Select.
The printer returns to the Ready state.
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Ordering suppli es and maintenance
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items
In the U.S. or Canada, call 1-800-438-2468 for information about Lexmark Authorized Supplies
Dealers in your area. In other countries, contact the place where you bought your printer.
Ordering a fuser
Use P/N 12G6498 to order a fuser for a 100 V printer. Use P/N 12G6496 to order a fuser for a 115 V
printer. Use P/N 12G6497 to order a fuser for a 220 V printer.
Ordering an image transfer unit and transfer roller
Use P/N 12G6304 to order an image transfer unit and second transfer roller.
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Printing mu lti-language PDFs
Symptom Cause Solution
Some maintenance and
troubleshooting
documents do not
print.
The documents contain
unavailable fonts.
1 Open the document you w ant to print in
Adobe Acrobat.
2 Click the p r in te r ic o n .
The Print dialog box appears.
3 Check the Print as image box.
4 Click OK.
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Supplies Menu
The Supplies Menu provides information about printer supplies that require attention. It is only
available when a supply is low or needs replacement.
Oiler
Purpose:
To view the status of the web oiler.
Values:
Near Exhausted
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Setup Menu
Use the Setup Menu to configure a variety of printer features.
Note: Values marked by an asterisk (*) are the factory default settings.
Printer Usage
Purpose:
To determine the behavior of the image transfer unit during printing.
Values:
Max Speed The image transfer unit is engaged throughout the print job.
Max Yield* The image transf er unit positio n is engaged based on page content. Thi s may
extend the life of certain print supplies.
Toner Alarm
Purpose:
To specify how the printer responds when it is low on toner.
Values:
Off An error message is displayed until someone replaces the ton er cartridge. If an
Auto Continue value is selected from the Setup Menu, the printer resumes printing
after the specifi ed ti m eout value .
Single* Printer stops printing, displays an error message, and sounds three quick beeps.
Continuous Printer stops pri nting , dis pla ys an er ror message , and re peats t hree be eps e v ery 10
seconds until th e toner cartridge is re placed.
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P arallel Me n u
Use the Parallel Menu to change printer settings affecting jobs sent to the printer through a parallel
port (either Std Parallel or Parallel Opt <x>).
Note: Values marked by an asterisk (*) are the factory default settings.
MAC Binary PS
Purpose:
To configure the printer to process Macintosh binar y PostScript print jobs.
Values:
On Printer processes raw binary PostScript print jobs from comput ers using the Macintosh
operating syst em .
Note: This setting often causes Windows print jobs to fail.
Off Printer filters P ostScript print jobs usi ng standard protocol.
Auto* Printer processes print jobs from computers using either Windows or Macintosh operating
systems.
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Paper Menu
Use the Paper Menu to define the paper loaded in each paper tray and the default paper source and
output bin.
Note: Values marked by an asterisk (*) are the factory default settings.
Assign Type/Bin
Purpose:
To send print jobs to a specific output bin based on the requested paper type.
Values (for Standard Bin* and Bin <x>):
Plain Paper Bin Envelope Bin
Card Stock Bin Letterhead Bin
T ransparency Bin Preprinted Bin
Glossy Pape r Bin Colored Bin
Labels Bin Custom <x> Bin (where <x> represents 1 through 6)
Bond Bin
Note: If a user-defined name is available, it is displayed instead of Custom <x> Bin. The
name is truncated to 14 characters. If two or more bins share the same name, the
name only appears once in the Assign Type/Bin value list.
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Custom Types
Purpose:
To specify the kind of paper associated with each of the Custom Types available in the Paper Type
menu item.
Values for Custom Type <x>, wh ere <x> represents 1, 2, 3, 4, 6 (paper only), or 5
(transparencies o nly):
Paper* Glossy Paper
Card Stock Labels
Transparency Envelope
Note: If a user-defined name is available, it is displayed instead of Custom Type <x>. The
user-defined name is truncated to 14 characters. If two or more custom types share
the same name, the name only appears once in the Custom Types value list.
Paper Loading
Purpose:
To properly handle preprinted paper load ed in a tray, whether the job is a duplexed job or a
single-sided job.
Values:
First select a paper type:
Card Stock Load Colored Loading Ltrhead Loading Bond Loading
Glossy Loading Custom <x> Loading Preprint Loading
Then select a value:
Duplex Notifies the printer that the specified pap er type is loaded properly for dup lex printing. If
the printer receives a single-si ded job using that paper type, the printer inserts blan k
pages as necessa ry to print t he job properly on preprinted forms. This setting m ay slow
single-sided printing.
Off* Printer assumes preprint ed materi al is loaded for single-sided printing. Duplex ed jobs
may not print properly.
Note: If a user-defined name is available, it is displayed instead of Custom <x> Loading.
The name is truncated to 14 characters.
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Paper Texture
Purpose:
To identify the texture of the paper loaded in a specific source and to ensure that characters print
clearly.
Values:
First select a paper type:
Plain Texture Preprint Texture Labels Texture Ltrhead Texture
Card Stock Text Colored Texture Bond Texture Glossy T exture
T rnsprncy Text Custom <x> Texture Envelope T exture
Then select a value:
Smooth
Normal*
Rough
Note: The default for B ond Texture is Rough instead of Normal. If a user-defined name is
available for a custom Type, then the name is displayed instead of Custom <x>
Texture. The name is truncated to 14 characters.
Use Paper Texture in connection with the Paper Type and Paper Weight menu items. You may need to
change those menu items to optimize print quality for your specific paper.
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Paper Type
Purpose:
To identify the type of paper installed in each paper source.
Values:
First select a paper source:
Tray <x> Type MP Feeder Type
Manual Pap Type Manual Env Type
Then select a value:
Plain Paper Labels Preprinted Envelope
Card Stock Bond Custom Type <x> Colored Paper
T ransparency Letterhead Glossy Pape r
The Paper Type default for each envelope source is Envelope. The Paper Type default for each paper
tray is as follows:
Tray 1–Plain Paper Tray 4–Custom Type 4
Tray 2–Custom Type 2 Manual Pap Type–Plain Paper
Tray 3–Custom Type 3
Note: If a user-defined name is available, it is displayed instead of Custom Type <x>. The
user-defined name is truncated to 14 characters. If two or more custom types share
the same name, the name only appears once in the Paper Type value list.
Use this menu item to:
• Optimize print quality for the specified paper.
• Select paper sources through your software application by selecting type and size.
• Automatically link paper sources. Any sources containing the same type and size of paper are
automatically linked by the printer, if you have set the Paper Size and the Paper Type to the
correct values.
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Paper Weight
Purpose:
To identify the relative weight of the paper loaded in a specific source and ensure that the toner
adheres properly to the printed page.
Values:
First select a paper type:
Plain Weight Preprin t Weight Bond Weight Labels Weight
CardStock Weight Colored Weight Envelope W eight Ltrhead Weight
T rnsprncy Weight Custom <x> Weight Glossy We ight
Then select a value:
Light
Normal*
Heavy
Note: If a user-defined name is available, it is displayed instead of Custom <x> Weight.
The name is truncated to 14 characters.
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Understanding Printer Messa ges
Held Jobs May
Not Be Restored
What this message means:
The printer memory cannot restore Print and Hold jobs from the printer hard disk.
What you can do:
Press Go to clear the message. Some of the Print and Hold jobs stored on the disk will not be
restored.
Load <x>
Plain Letter
What this message means:
Someone has initiated a tray calibration procedure.
What you can do:
Load paper into <x> and press Go to continue the calibration process.
32 Unsupporte d
<color> Cartr idge
What this message means:
An unsupported print cartridge is installed.
What you can do:
Remove the specified print cartridge and install a new one.
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58 Input
Config Error
What this message means:
Too many drawers with matching trays are installed on the printer.
What you can do:
Turn off and unplug the pr inter. Remove the additional drawers. Plug in the printer and turn it
on.
82 Waste Bottle Nearly Full
What this message means:
The toner waste container is almost full.
What you can do:
Press Go to clear the message and continue printing.
•
• Replace the toner waste container.
83 ITU Maintenance
What this message means:
The counter that tracks wear on the image transfer unit has reached its limit.
What you can do:
Press Go to continue printing.
•
• If print quality is unacceptable, replace the image transfer unit.
84 Oiler Nearly Exhauste d
What this message means:
The web oiler is nearing the end of its life.
What you can do:
Press Go to clear the message and continue printing.
•
• Replace the web oiler.
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84 Replace Oiler
What this message means:
The web oiler has reached its end of life or is missing from the printer.
What you can do:
Replace the web oiler.
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Infrared Menu
Use the Infrared Menu to change printer settings affecting jobs sent to the printer through an infrared
port.
Note: Values marked by an asterisk (*) are the factory default settings.
Infrared Buffer
Purpose:
To configure the size of the infrared input buffer.
Values:
Disabled Disables job buf f ering . Any jobs already b uff e red on the disk are printe d befo re
normal processing of incom ing jobs resumes.
Auto* Printer automatical ly calculates the Inf rared Buffer si ze (recommended
setting).
36K to maximum
size allowed
User specifies the Infrared Buffer size. The maximum size setting depends on
the amount of memory in your printer, the size of the other link buffers, and
whether Resource Save is set to On or Off. To maximize the range for the
Infrared Buffer size, disable or reduce the size of the parallel, serial, network,
LocalTalk, and USB buffers.
Note: Changing the Infrared Buffer menu item automatically resets the printer.
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Lexmark and Lexmark with diamond design are tra demarks of Lexmark International, I nc.,
registered in the United States and/or other countries.
© 2001 Lexmark International, Inc.
740 West New Circle Road
Lexington, Kentucky 40550
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