Lexmark C734dn User Manual

							Warning—Potential Damage: To avoid overexposing the photoconductor units, do not leave the front door
open for more than 10 minutes.
2Remove all four toner cartridges. Do not remove the photoconductor units for this procedure.
3Locate the four printhead lenses.
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4Clean the lenses using a can of compressed air.
Warning—Potential Damage: Do not touch the printhead lenses.
5Reinstall the four toner cartridges. Maintaining the printer131
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							6Close the front door.
Storing supplies
Choose a cool, clean storage area for the printer supplies. Store supplies right side up in their original packing until you
are ready to use them.
Do not expose supplies to:
Direct sunlight
Temperatures above 35°C (95°F)
High humidity above 80%
Salty air
Corrosive gases
Heavy dust
Checking the status of supplies
A message appears on the display when a replacement supply item is needed or when maintenance is required.
Checking the status of supplies from the printer control panel
1Make sure the printer is on and Ready appears.
2From the printer control panel, press the up or down arrow button until Status/Supplies appears, and then
press 
.
3Press the up or down arrow button until View supplies appears, and then press .
The status of each supply appears. Maintaining the printer132
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							Checking the status of supplies from a network computer
Note: The computer must be connected to the same network as the printer.
1Type the printer IP address into the address field of your Web browser.
Note: If you do not know the IP address of the printer, print a network setup page and locate the IP address in
the TCP/IP section.
2Click Device Status. The Device Status page appears, displaying a summary of supply levels.
Ordering supplies
To order supplies in the U.S., contact Lexmark at 1-800-539-6275 for information about Lexmark authorized supplies
dealers in your area. In other countries or regions, visit the Lexmark Web Site at www.lexmark.com or contact the
place where you purchased the printer.
Note: All life estimates for printer supplies assume printing on letter‑ or A4‑size plain paper.
Ordering toner cartridges
When 88 Cyan cartridge low, 88 Magenta cartridge low, 88 Yellow cartridge low, or 88
Black cartridge low appears, order a new cartridge.
When 88 Replace Cyan cartridge, 88 Replace Magenta cartridge, 88 Replace Yellow
cartridge, or 88 Replace Black cartridge appears, you must replace the specified cartridge.
Estimated cartridge yield is based on the ISO / IEC 19798 standard (with about 5% coverage per color). Extremely low
print coverage (less than 1.25% for a color) for extended periods of time may negatively affect actual yield for that color
and may cause cartridge parts to fail prior to exhaustion of toner.
Ordering photoconductors
When , 84 photoconductor low, or 84  photoconductor nearly low appears, order a
replacement photoconductor.
When 84 Replace  photoconductor appears, you must replace the specified photoconductor.
Part namePart number
Photoconductor C734X20G
Photoconductor, Multi‑Pack C734X24G
Ordering a fuser or a transfer module
When 80 Fuser Life Warning or 83 Transfer Module Life Warning appears, order a replacement
fuser or a transfer module.
When 80 Replace Fuser or 83 Replace Transfer Module appears, install the new fuser or the new
transfer module. For installation information, see the documentation that came with the part. Maintaining the printer133
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							Part namePart number
Fuser 40X5095 (100 volt)
40X5093 (115 volt)
40X5094 (230 volt)
Transfer Module 40X5096
Ordering a waste toner box
When 82 Waste toner box nearly full appears, order a replacement waste toner box. When 82 Replace
waste toner box appears, you must replace the waste toner box.
Note: Waste toner box reuse is not recommended.
Part namePart number
Waste Toner Box C734X77G
Replacing supplies
Replacing a toner cartridge
When 88 Replace  cartridge, 88  cartridge nearly low, or 88 
cartridge low appears on the printer control panel, or when print becomes faded, try to extend the life of the
specified cartridge.
1Open the front door.
Warning—Potential Damage: Make sure the printer is not open for 10 minutes or more to avoid overexposing
the photoconductor units to light.
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							2Pull up and out on the green tabs of the specified cartridge to remove it from the printer.
3Shake the cartridge front to back and side to side to redistribute the toner.
4Reinsert the cartridge to continue printing.
5Repeat this process multiple times until printed text and graphics remain faded.
When printed text and graphics remain faded, replace the specified cartridge. Repeat steps 1 and 2, and then follow
the steps below. Maintaining the printer135
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							6Unpack a new cartridge.
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2
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7Place the old cartridge in the replacement cartridge shipping box, and then attach the return label to the box for
shipping.
8Shake the new cartridge front to back and side to side to evenly distribute the toner.
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							9Remove the red packing strip from the new cartridge.
10Insert the new cartridge into the printer.
11Close the front door.
Note: Make sure each cartridge is fully pushed in. If a cartridge is not installed correctly, the printer may issue a
 Cartridge Missing message, where  is Black, Cyan, Magenta, or Yellow. The
printer may also issue the message Close front door.
If either of these messages appears, follow these steps to clear the printer control panel message and continue printing:
1Open the front door.
2Remove the specified cartridge.
3Reinstall the specified cartridge. Maintaining the printer137
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							4Close the front door.
5Check the printer control panel to see if it is clear of messages.
6Repeat as needed for additional toner cartridge replacement.
Replacing a photoconductor
There are three different display messages that may appear when a photoconductor replacement is necessary: 84
Replace  photoconductor, 84  photoconductor nearly low, or 84 
photoconductor low.
Note: A replacement photoconductor can be used with any color.
Replacing a photoconductor is a two‑part process. First, complete the illustrated steps to replace the photoconductor,
and then reset the life count and clear printer messages.
1Open the front door.
Warning—Potential Damage: To avoid overexposing the photoconductors , do not leave the door open for
more than 10 minutes.
2Pull the specified photoconductor up, and then slide it to the right to remove it from the printer.
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2
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							3Unpack the replacement photoconductor.
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Warning—Potential Damage: Do not touch the shiny area on the photoconductor drum. Touching it could
damage the photoconductor.
4Align and insert the left end of the photoconductor, and then press the right end until it clicks into place.
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5Remove the red packing strip from the top of the photoconductor.
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							6Place the old photoconductor into the replacement photoconductor box, and then place the return label on the
box for shipping to Lexmark for recycling.
7Close the front door.
8If you see 84 Replace  photoconductor, 84  photoconductor nearly low,
or 84  photoconductor low on the display, then press the up or down arrow button until 
Supply Replaced appears, and then press .
Note: Failure to reset the life count may result in degraded print quality.
Replaced  photoconductor appears.
Yes appears.
9Press  to clear the message.
If you are prompted to replace only one photoconductor, then the Ready screen appears, and the task is complete.
If you are prompted to replace additional photoconductors, repeat steps 1 to 9 for each additional photoconductor.
After all photoconductors have been replaced, Ready appears, and the task is complete. Maintaining the printer140
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