HP Color LaserJet Enterprise CM4540 MFP User Manual

4.Remove the new print cartridge from its
protective bag.
NOTE: Be careful not to damage the
memory tag on the print cartridge.  
5.
Grasp both sides of the print cartridge and
distribute the toner by gently rocking the print
cartridge.  
6.
Remove the orange protective cover from the
print cartridge.
CAUTION: Avoid prolonged exposure to
light.
CAUTION: Do not touch the green roller.
Doing so can damage the cartridge.  
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7.Align the print cartridge with its slot and insert
the print cartridge until it clicks into place.
NOTE: The print cartridges go in at a slight
angle.  
8.
Close the front door.  
Replace the toner collection unit
Replace the toner collection unit when the control panel prompts you.
NOTE: The toner collection unit is designed for a si ngle use. Do not attempt to empty the toner
collection unit and reuse it. Doing so could lead to  toner being spilled inside the product, which could
result in reduced...

1.Open the front door. Make sure that the door
is completely open.  
2.
Grasp the top of the toner collection unit and
remove it from the product.  
3.
Place the attached cap over the opening at the
top of the unit.  
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4.Remove the new toner collection unit from its
packaging.  
5.
Insert the bottom of the new unit into the
product first and then push the top of the unit
until it clicks into place.  
6.
Close the front door.
NOTE: If the toner collection unit is not
installed correctly, the front door does not
close completely.
To recycle the used tone r collection unit, follow
the instructions included with the new toner
collection unit.  
114 Chapter 7   Manage supplies
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Replace the staple cartridge
1.Lift the gray latch on the front of the stapler,
and open the stapler cover.  
2.
Lift the green tab on the staple cartridge up,
and then pull the staple cartridge straight out.  
3.
Insert the new staple cartridge into the stapler
and push down on the green handle until it
snaps into place.  
4.
Close the stapler cover.  
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Solve problems with supplies
Check the print cartridges
Check the print cartridge, and replace it if necessary, if you are having any of the following problems:
● The printing is too light or seems faded in areas.
● Printed pages have small unprinted areas.
● Printed pages have streaks or bands.
NOTE:
If you are using a draft or EconoMode print setting, the printing might appear light.
If you determine that you need to replace a print ca rtridge, print the supplies status page to find the
part number for...

Inspect the print cartridge for damage
1.Remove the print cartridge from the product, and verify that the sealing tape has been removed.
2. Check the memory chip for damage.
3. Examine the surface of the green imaging dr um on the bottom of the print cartridge.
CAUTION:Do not touch the green roller (imaging drum) on the bottom of the cartridge.
Fingerprints on the imaging drum can cause print-quality problems.
4. If you see any scratches, fingerprints, or other damage on the imaging drum, replace the...

Repeating defects
If defects repeat at regular intervals on the page, use this ruler to identify the cause of the defect. Place
the top of the ruler at the first defect. The markin g that is beside the next occurrence of the defect
indicates which component needs to be replaced.
Figure 7-1   Repetitive defects ruler
0 mm
27  m m
32  m m
44 mm 55 mm
48 mm
51 mm
63 mm
76  m m
80 mm
96  m m
101 mm
Distance between defects Product components that cause the defect
27 mm Print cartridge
32 mm Print cartridge...

Print the Supplies Status page
The Supplies Status  page indicates the estimated life remaining in print cartridges. It also lists the part
number for the correct genuine HP print cartridge  for your product so you can order a replacement
print cartridge, as well as other useful information.
1. Open the following menus:
●Administration
● Reports
● Configuration/Status Pages
2. Select the  Supplies Status  option, and then touch the  Print button to print the report.
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Interpret control panel messages for supplies
The following table contains important information about supplies status messages.
Table 7-1  Supplies status messages
Control panel message DescriptionRecommended action
10.XX.YY Supply memory error The product cannot read or write to at least
one print cartridge memory chip or a
memory chip is missing from a print
cartridge.
XX values
●00 = Memory chip memory error
● 10 = Memory chip missing
YY values
●
00 = Black
● 01 = Cyan
● 02 = Magenta
● 03 = Yellow...