DELL 2150cn User Manual

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5Turn the four PHD lock levers 90-degrees counterclockwise.
6Hold the gray tabs, and then pull out the PHD unit.
 

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 NOTE: Keep the PHD unit in a dark place. If the front cover remains open 
for more than three minutes, print quality may deteriorate.
7Clean the feed roller inside the printer with a dry cloth.
 

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8Insert the PHD unit until it stops, and then turn the four PHD lock levers 90-
degrees clockwise to lock the PHD unit.
9Close the belt unit, and push at the top of the unit until it clicks.
10Close the front cover.
 

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11Insert the standard 250-sheet tray into the printer, and push until it stops.
Cleaning the CTD Sensor
Clean the Color Toner Density (CTD) sensor only when an alert for the CTD 
sensor is shown on the Status Monitor or operator panel.
1
Ensure that the printer is turned off.
2Pull the standard 250-sheet tray out of the printer about 200 mm. Hold the 
standard 250-sheet tray with both hands, and remove it from the printer.
 

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3Push the side button to open the front cover.
4Open the belt unit.
 

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5Clean the CTD sensor inside the printer with a clean dry cotton swab.
6Close the belt unit, and push at the top of the unit until it clicks.
 

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7Close the front cover.
8Insert the standard 250-sheet tray into the printer, and push until it stops.
 

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Adjusting Color Registration
To adjust the color registration when you first install the printer or after moving 
it to a new location, follow the procedure below.
• Printing the Color Registration Chart
• Determining Values
• Entering Values
Printing the Color Registration Chart 
When Using the Operator Panel
1Press the   (Menu) button. 
2Press   button until Admin Menu appears, and then press the   (Set) 
button.
3Press   button until Maintenance appears, and then press the...

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The Tool Box opens.
2Click the Printer Maintenance tab.
3Select Color Registration Adjustment from the list at the left side of the 
page.
The 
Color Registration Adjustment page is displayed.
4Click the Star t button next to Print Color Regi Chart.
The color registration chart is printed.
Determining Values
On the color registration chart, there are two types of charts: Chart 1 (fast scan) 
and Chart 2 (slow scan).
The Chart 1 is used to adjust the color registration for the...

398Maintaining Your Printer
Slow Scan
On the Chart 2 of the color registration chart, find the medium line within the 
range of white area for each color pattern (Y, M, and C). If you find the medium 
line, make a note of the value (-9 
– +9) indicated by the medium line for each 
color.
When the value is 0 for each color, you do not need to adjust the color 
registration for the slow scan.
When the value is not 0, enter the value using the procedure in Entering 
Va l u e s .