Lexmark C 750 is a versatile and efficient printer that offers high-quality color output for professional documents and images. With its advanced features, it's ideal for home offices, small businesses, or graphic design professionals. Print, copy, and scan with ease, and take advantage of its user-friendly interface and wireless connectivity for seamless integration with your devices.
Lexmark C 750 is a versatile and efficient printer that offers high-quality color output for professional documents and images. With its advanced features, it's ideal for home offices, small businesses, or graphic design professionals. Print, copy, and scan with ease, and take advantage of its user-friendly interface and wireless connectivity for seamless integration with your devices.
Edition: August 2001
The following paragraph does not apply to any country where such provisions are inconsistent with local law: LEXMARK INTERNATIONAL,
INC., PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow
disclaimer of express or implied warranties in certain transactions; therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will
be incorporated in later editions. Improvements or changes in the products or the programs described may be made at any time.
Comments about this publication may be addressed to Lexmark International, Inc., Department F95/032-2, 740 West New Circle Road, Lexington,
Kentucky 40550, U.S.A. In the United Kingdom and Eire, send to Lexmark International Ltd., Marketing and Services Department, Westhorpe House,
Westhorpe, Marlow Bucks SL7 3RQ. Lexmark may use or distribute any of the information you supply in any way it believes appropriate without incurring
any obligation to you. You can purchase additional copies of publications related to this product by calling 1-800-553-9727. In the United Kingdom and
Eire, call 0628-481500. In other countries, contact your point of purchase.
References in this publication to products, programs, or services do not imply that the manufacturer intends to make these available in all countries in
which it operates. Any reference to a product, program, or service is not intended to state or imply that only that product, program, or service may be
used. Any functionally equivalent product, program, or service that does not infringe any existing intellectual property right may be used instead.
Evaluation and verification of operation in conjunction with other products, programs, or services, except those expressly designated by the
manufacturer, are the user’s responsibility.
Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
ImageQuick is a trademark of Lexmark International, Inc.
Other trademarks are the property of their respective owners.
© Copyright 2001 Lexmark International, Inc.
All rights reserved.
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
This software and documentation are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to restrictions
as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 and in applicable FAR
provisions: Lexmark International, Inc., Lexington, KY 40550.
FCC emissions information
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Any questions on this statement should be directed to:
Director of Lab Operations
Lexmark International, Inc.
740 West New Circle Road
Lexington, KY 40550
(859) 232-3000
Please refer to the Lexmark C750 Publications CD for details.
1
Replace the image transfer unit
and transfer roller
The following set of instructions can be
used to replace just an image transfer
unit, just a transfer roller, or both.
We recommend that you replace both
the image transfer unit and the transfer
roller at the same time.
1 Turn off and unplug the printer.
2 Open the front cover.
2
3 Remove all the print cartridges.
a Pull up slightly on the
handhold.
b Pull the cartridge straight out
and use the handle to lift it off
the guides.
c Set the cartridge on a clean
flat surface in the upright
position.
Warning! When removing cartridges
from the printer, be careful not to touch
the photoconductor on the bottom of the
cartridge.
4 Release the latches to open the
multipurpose feeder all the way.
3
5
Remove the old image transfer
unit.
a Raise the lever to unlock the
image transfer unit.
b Pull down on the handle.
4
c Slide the unit out of the
machine and place it on a
clean flat surface.
6 Perform one of the following:
— If you are not installing a new
transfer roller, skip to step 10.
— If you are installing a new
transfer roller, go on to step 7.
7 Remove the old transfer roller
from the printer.
a Using your left hand, reach
through the side of the printer
and hold up the transfer roller
wheel.
b Using your right hand, reach
through the front of the printer
and lift the end of the transfer
roller away from the back of
the printer.
c Pull the roller completely out of
the printer and discard it.
5
8
Unwrap the new transfer roller.
Remove and discard all the
packaging.
9 Install the new transfer roller.
a Using your left hand, reach
through the side of the printer
and hold up the transfer roller
wheel.
b Using your right hand, insert
the small end of the new roller
into the notched opening at the
front of the printer.
c Push the roller down into place
at the back of the printer.
d Lower the transfer roller wheel
until it gently rests against the
new roller.
6
10 Remove the new image transfer
unit from the box and the plastic
shipping bag.
Save all the packing materials.
Follow the recycle instructions in
the box.
11 Remove the protective cover and
detensioner. Gently but firmly pull
the material up and off the new
unit.
Warning! Do not touch the transfer belt
when removing the protective cover and
detensioner. Touching the transfer belt
will damage the image transfer unit.
Detensioner
Protective
cover
7
12 Insert the new image transfer unit.
a Align the guides with the
insertion grooves.
Warning! Do not touch the transfer belt
when installing the unit. Touching the
transfer belt will damage the image
transfer unit.
8
b Push the handle up using both
hands, and gently slide in the
new unit. It will drop down
when correctly seated.
c Lower the lever to lock the
image transfer unit into place.
9
13
Return the multipurpose feeder to
its working position.
14 Reinstall all the print cartridges.
a Align the cartridge with its
color-coded opening.
b Slide it into the printer. The
cartridge drops slightly and
clicks into place.
15 Close the printer door.
If the door doesn’t close
completely, reopen the door and
press in firmly on the cartridges to
make sure they are fully seated.
16 Plug the printer in and perform
one of the following:
— If you only installed a transfer
roller, turn the printer back on.
The printer returns to a Ready
state. You are now finished.
— If you installed a new image
transfer unit, continue with step
17.
17 Set the alignment for the new
image transfer unit.
a On the printer operator panel,
press and hold
Select and
Return while turning the printer
on.
b When Performing Self
Test appears, release the
buttons.
10
c When Config Menu appears,
press
Select.
d Press Menu until you see Align
ITU, and then press
Select. A
test page prints.
e Look at the test page and
select the best color alignment
for each of the twelve settings.
For each setting (A-L) you
must select a value in the
range of -7 to +7 to nearest .5
increment. For example, for the
A Alignment you may find your
value to best at 4.5.
f Press Menu until you see A
Alignment, and then press
Select.
g Press Menu until you see the
value you want to use (for
example, 4.5), and then press
Select. Saved briefly appears.
h When you see B Alignment,
repeat steps a through g. You
must do this for all twelve
settings.
i When you have finished with L
Alignment, press
Go to return
the printer to Ready status.
This is a placeholder for the inside back cover.
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Lexmark C 750 is a versatile and efficient printer that offers high-quality color output for professional documents and images. With its advanced features, it's ideal for home offices, small businesses, or graphic design professionals. Print, copy, and scan with ease, and take advantage of its user-friendly interface and wireless connectivity for seamless integration with your devices.
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