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DELL 1235cn User Manual

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Page 51

Maintenance |51
4.Pull the waste toner container out  of the printer using its handle. 
5. Pull the imaging unit out of the printer using the groove on the front of 
the imaging unit.
6. With a dry lint-free cloth, wipe away  any dust and spilled toner from the 
toner cartridges area and their cavities. 7.
Holding the groove on the front of  the imaging unit, push the imaging 
unit in to the printer.
8. Insert the waste toner container into position and then push it to ensure 
that it is firmly seated in...

Page 52

52 |Maintenance
Cleaning the scan unit
Keeping the scan unit clean helps ensure the best possible copies. It is 
recommended that you clean the scan  unit at the start of each day and 
during the day, as needed.
1. Slightly dampen a soft lint-free cloth or paper towel with water.
2. Open the scanner lid.
3. Wipe the surface of the scanner glass until it is clean and dry.
4. Wipe the underside of the scanner lid and white sheet until it is clean 
and dry.
5. Push the ADF sheet with any tool such as...

Page 53

Maintenance |53
MAINTAINING THE CARTRIDGE
Toner cartridge storage
To get the most from the toner cartridge, keep the following guidelines in 
mind:
• Do not remove the toner cartridge from its package until it is ready for 
use. 
• Do not refill the toner cartridge. The printer warranty does not cover  damage caused by using a refilled cartridge.
• Store toner cartridges in the same environment as your printer.
Expected cartridge life
The life of the toner cartridge yield dep ends on the amount of toner...

Page 54

54 |Maintenance
3.Grasp the handles on the toner cartridge and pull to remove the 
cartridge from the printer.
4. Take a new toner cartridge out of its package.
5. Holding both handles on the toner cartridge, thoroughly rock it from side 
to side to evenly distribute the toner.
 
6.Place the toner cartridge on a flat  surface, as shown, and remove the 
protecting cover. 7.
Ensure that the color of the toner cartridge matches the color slot and 
then grasp the handles on the toner cart ridge. Insert the...

Page 55

Maintenance |55
REPLACING THE IMAGING UNIT
When the life span of the imaging unit has expired, the Dell Toner
Management System™ program window appears on the computer, 
indicating the imaging unit needs to be re placed. If the imaging unit is not 
replaced, your prin ter fails to print.
1. Turn the printer off, then wait a fe w minutes for the printer to cool.
2. Using the handle, completely open the front cover.
3. Grasp the handles on the toner cartridge and pull to remove the four 
cartridges from...

Page 56

56 |Maintenance
8.Insert the waste toner container into position and then push it to ensure 
that it is firmly seated in place.
9. Slide the four toner cartridges back into the printer.
10. Close the front cover firmly. 
11. Turn the printer on.REPLACING THE WASTE TONER CONTAINER
When the life span of the waste toner container has expired, the Dell Toner 
Management System™ program window appears on the computer, 
indicating the waste toner container needs to be replaced.  If the waste toner 
container...

Page 57

Maintenance |57
6.Insert the new container into position  and then push it to ensure that it is 
firmly seated in place.
7. Close the front cover firmly.
8. Turn the printer on.
MAINTENANCE PARTS
To avoid print quality and paper feed problems resulting from worn parts, 
and to maintain your printer in top working condition, the following items will 
need to be replaced after the specifi ed number of pages, or when the life 
span of each item has expired. 
 
It is highly recommended that this maintenance...

Page 58

58 |Troubleshooting
troubleshooting
This chapter gives helpful info rmation about what to do if you encounter an error.
This chapter includes:
• Tips for avoiding paper jams
• Clearing document jams
• Clearing paper jams • Understanding display messages
• Solving other problems
TIPS FOR AVOIDING PAPER JAMS
By selecting the correct media type
s, most paper jams can be avoided. 
When a paper jam occurs, follow the steps outlined on page 58. 
• Follow the procedures on page 28. En sure that the adjustable...

Page 59

Troubleshooting |59
Roller misfeed
1.Open the scanner lid.
2. Seize the misfeed paper, and remove the paper from the feed area by 
carefully pulling it to the right using both hands.
3. Close the scanner lid. Then load the removed pages back into the ADF.
CLEARING PAPER JAMS
When a paper jam occurs, the warning message appears on the display 
screen. Refer to the table below to locate and clear the paper jam.
In the tray 1
1. Open and close the front cover.  The jammed paper is automatically 
ejected...

Page 60

60 |Troubleshooting
2.Open the inner cover. 
3.Carefully take the jammed paper out of the printer.
4. Close the inner cover.
5. Lower down the scan unit gently and slowly until it is completely closed. 
Ensure that it is securely latched.
Be careful not to pinch your fingers!
In the paper exit area
1. Open and close the front cover.  The jammed paper is automatically 
ejected from the printer.
2. Gently pull the paper out of the output tray.
If you do not see the jammed paper or  if there is any...
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