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...

●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...

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...

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...

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,...

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...

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...

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.
116 Chapter 5   Solve problems ENWW 

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...

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...