HP LaserJet Pro 400 M401 User Manual

							2.Check the memory chip for damage.  
3.Examine the surface of the imaging drum on
the bottom of the toner cartridge.
CAUTION: Do not touch the 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
toner cartridge.  
5. If the imaging drum does not appear to be
damaged, rock the toner cartridge gently
several times and reinstall it. Print a few pages
to see if the problem has resolved.  
Check the paper and printing environment
Use paper that meets HP specifications
Use different paper if you are havi
ng any of the following problems:
● The printing is too light 
or seems faded in areas.
● Specks of toner are on the printed pages.
● Toner is smearing on the printed pages.
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							●Printed characters
 seem misformed.
● Printed pages are curled.
Always use a paper type and weight that this prod uct supports. In addition, follow these guidelines
when selecting paper:
● Use paper that is of good quality and free of 
cuts, nicks, tears, spots, loose particles, dust,
wrinkles, voids, staples, and curled or bent edges.
● Use paper that has not been previously printed on.
● Use paper that is designed for use 
in laser printers. Do not use paper that is designed only for use
in inkjet printers.
● Use paper that is not too rough. Using smoother
 paper generally results in better print quality.
Check the product environment
Verify that the product is operating within the en vironmental specifications listed in the product
Warranty and Legal Guide.
Check print job settings
Check the EconoMode setting
This product has an EconoMode option for printing drafts of documents. Us ing EconoMode can use less
toner. However, using EconoMode can also reduce print quality. To improve pr int quality, verify that
the EconoMode setting is deactivated.
1. From the software program, select the  Print option.
2. Select the product, and then click the  Properties or Preferences  button.
3. Click the  Paper/Quality  tab.
4. Verify that the  EconoMode check box is cleared. If there is  a checkmark in the check box, click
the check box to clear it.
HP does not recommend the full-time use of EconoM ode. If EconoMode is used full-time, the toner
supply might outlas t the mechanical parts in the toner cartridg e. If print quality begins to degrade and
is no longer acceptable, consid er replacing the toner cartridge.
Use the print driver that best  meets your printing needs
You might need to use a different print driver if  the printed page has unexpected lines in graphics,
missing text, missing graphics, incorre ct formatting, or substituted fonts.
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							HP PCL 6 driver●Provided as the default driver. This dr
iver is automatically installed by the
HP installer.
● Recommended for all Windows environments
● Provides the overall best speed, print qu
ality, and product-feature support for
most users
● Developed to align with the Windows Gr
aphic Device Interface (GDI) for the
best speed in Windows environments
● Might not be fully compatible with th
ird-party and custom software programs
that are based on PCL 5
HP UPD PS driver ●
Recommended for printing with Adobe
® software programs or with other
highly graphics-intens ive software programs
● Provides support for printing from postscript emulation needs, or for postscript
flash font support
● Available for download from 
www.hp.com/go/upd
HP UPD PCL 5 driver ●Recommended for general office printing in Windows environments
● Compatible with previous PCL versions and older HP LaserJet products
● The best choice for printing from th
ird-party or custom software programs
● The best choice when operating with mixed environments that require the
product to be set to PCL 
5 (UNIX, Linux, mainframe)
● Designed for use in corporate Windows environments to provide a single
driver for use with multiple printer models
● Preferred when printing to multiple 
printer models from a mobile Windows
computer
● Available for download from 
www.hp.com/go/upd
HP UPD PCL 6 driver ●Recommended for printing in all Windows environments
● Provides the overall best speed, print qu
ality, and printer feature support for
most users
● Developed to align with Windows Graphic Device Interface (GDI) for best
speed in Windows environments
● May not be fully compatible with third-party and custom solutions based on
PCL5
● Available for download from 
www.hp.com/go/upd
Download additional print dr
ivers from this Web site: www.hp.com/support/ljm401series.
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							The product does not print or it prints slowly
The product does not print
If the product does not print at all, try the following solutions.
1. Make sure the product is turned on and th at the control panel indicates it is ready.
◦ If the control panel does not indicate the prod
uct is ready, turn the product off and then on
again.
◦ If the control panel indicates the produc
t is ready, try sending the job again.
2. If the control panel indicates the product has an  error, resolve the error and then try sending the
job again.
3. Make sure the cables are all connected correctly.  If the product is connected to a network, check
the following items:
◦ Check the light next to the network connection on the product. If the network is active, the
light is green.
◦ Make sure that you are using a network cabl
e and not a phone cord to connect to the
network.
◦ Make sure the network router, hub, or switch is
 turned on and that it is working correctly.
4. Install the HP software from the CD that came wi th the product, or download the latest print driver
from 
www.hp.com . Using generic print drivers can cause delays clearing jobs from the print
queue.
5. From the list of printers on your computer,  right-click the name of this product, click Properties,
and open the  Ports tab.
◦ If you are using a network cable to connect to 
the network, make sure the printer name listed
on the  Ports tab matches the product name on the product configuration page.
◦ If you are using a USB cable and are connecting 
to a wireless network, make sure the box is
checked next to  Virtual printer port for USB .
6. If you are using a personal firewall system on  the computer, it might be blocking communication
with the product. Try temporarily  disabling the firewall to see if it is the source of the problem.
7. If your computer or the product is connected  to a wireless network, low signal quality or
interference might be  delaying print jobs.
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							The product prints slowly
If the product prints, but it seems slow, try the following solutions.
1. Make sure the computer meets the minimum spec ifications for this product. For a list of
specifications, go to this Web site: 
www.hp.com/support/ljm401series .
2. When you configure the product to print on some  paper types, such as heavy paper, the product
prints more slowly so it  can correctly fuse the toner to the p aper. If the paper type setting is not
correct for the type of paper you are using, change  the setting to the correct paper type. Using the
archive printing mode also will  slow the product printing process.
3. If your computer or the product is connected  to a wireless network, low signal quality or
interference might be  delaying print jobs.
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							Solve walk-up USB printing problems
NOTE:This section applies only to the HP LaserJet  Pro 400 M401dn Printer and HP LaserJet Pro 400
M401dw Printer models.
●The USB Flash Drive menu does not open when you insert the USB accessory
●
The file does not print from the USB storage accessory
●
The file that you want to print is not listed in the USB Flash Drive menu
The USB Flash Drive menu does no t open when you insert the USB
accessory
1. You might be using a USB storage accessory or a fi le system that this product does not support.
Save the files on a standard USB storage access ory that uses File Allocation Table (FAT) file
systems. The product supports FAT12, FAT16, and FAT32 USB storage accessories.
2. If another menu is already open, close that menu and then reinsert the USB storage accessory.
3. The USB storage accessory might have multiple partitions. (Some USB storage accessory
manufacturers install software on the accessory th at creates partitions, similar to a CD.) Reformat
the USB storage accessory to re move the partitions, or use a different USB storage accessory.
4. The USB storage accessory might require mo re power than the product can provide.
a. Remove the USB storage accessory.
b. Turn the product off and then on.
c. Use a USB storage accessory that has its own  power supply or that requires less power.
5. The USB storage accessory might not be functioning correctly.
a. Remove the USB storage accessory.
b. Turn the product off and then on.
c. Try printing from another USB storage accessory.
The file does not print from the USB storage accessory
1.Make sure paper is in the tray.
2. Check the control panel for messages. If pape r is jammed in the product, clear the jam.
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							The file that you want to print is not listed in the USB Flash Drive
menu
1. You might be trying to print a file type that the USB printing feature does  not support. The product
supports .PDF and .JPEG file types.
2. You might have too many files in a single fold er on the USB storage accessory. Reduce the
number of files in the folder  by moving them to subfolders.
3. You might be using a character set for the file name  that the product does not support. In this case,
the product replaces the file names with characters  from a different character set. Rename the files
using ASCII characters.
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							Solve direct connection problems
If you have connected the product directly to a computer, check the cable.
● Verify that the cable is connected to the computer and to the product.
● Verify that the cable is no
t longer than 5 m (16.4 ft). Try using a shorter cable.
● Verify that the cable is working correctly by conne
cting it to another product. Replace the cable if
necessary.
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							Solve wired network problems
NOTE:This section applies to all models except  the HP LaserJet Pro 400 M401a Printer and
HP LaserJet Pro 400 M401d Printer models.
Check the following items to verify that the pr oduct is communicating with the network. Before
beginning, print a configuration page from the prod uct control panel and locate the product IP address
that is listed on this page.
●
Poor physical connection
●
The computer is using the incorrect IP address for the product
●
The computer is unable to  communicate with the product
●
The product is using incorrect link and duplex settings for the network
●
New software programs might be causing compatibility problems
●
The computer or workstation might be set up incorrectly
●
The product is disabled, or othe r network settings are incorrect
NOTE:HP does not support peer-to-pe er networking, as the feature is a function of Microsoft
operating systems and not of the HP print drivers. For more information, go to Microsoft at
www.microsoft.com .
Poor physical connection
1.Verify that the product is attach ed to the correct network port us ing a cable of the correct length.
2. Verify that cable connections are secure.
3. Look at the network port connection on the back of  the product, and verify that the amber activity
light and the green link-status light are lit.
4. If the problem continues, try a different cable or port on the hub.
The computer is usin g the incorrect IP addr ess for the product
1.Open the printer properties and click the  Ports tab. Verify that the cu rrent IP address for the
product is selected. The product IP address is  listed on the product configuration page.
2. If you installed the product us ing the HP standard TCP/IP port, select the box labeled  Always
print to this printer, even  if its IP address changes.
3. If you installed the product using a Microsoft st andard TCP/IP port, use the hostname instead of
the IP address.
4. If the IP address is correct, delete  the product and then add it again.
5. Create a new HP TCP/IP port  with the correct address.
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							The computer is unable to communicate with the product
1.Test network communication by pinging the network.
a. Open a command-line prompt on your computer. For Windows, click  Start, click Run, and
then type  cmd.
b. Type  ping followed by the IP address for your product.
For Mac OS X, open the Network Utility, and th en supply the IP address in the correct field in
the  Ping  pane.
c. If the window displays  round-trip times, the network is working.
2. If the ping command failed, verify that the networ k hubs are on, and then verify that the network
settings, the product, and the computer  are all configured for the same network.
NOTE:You also can test the network connection by  attempting to open the HP Embedded Web
Server in a supported Web browser.
The product is using incorrect li nk and duplex settings for the
network
Hewlett-Packard recommends leaving  this setting in automatic mode (the default setting). If you change
these settings, you must also  change them for your network.
New software programs might be causing compatibility problems
Verify that any new software programs are correctly in stalled and that they use the correct print driver.
The computer or workstation might be set up incorrectly
1.Check the network drivers, print dr ivers, and the network redirection.
2. Verify that the operating system is configured correctly.
The product is disabled, or othe r network settings are incorrect
1.Review the configuration page to check the status  of the network protocol. Enable it if necessary.
2. Reconfigure the network  settings if necessary.
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