HP LaserJet Enterprise M551n User Manual

							Paper does not feed automatically
Paper does not feed automatically
Cause Solution
Manual feed is selected in the software program. Load Tray 1 with paper, or, if the paper is loaded, press theOK button.
The correct size paper is not loaded. Load the correct size paper.
The input tray is empty. Load paper into the input tray.
Paper from a previous jam has not been completely removed. Open the product and remove any paper in the paper path.
The paper size is not configured correctly for the input tray. Print a configuration page or use the control panel to determine the paper size for which the tray is configured.
The guides in the tray are not against the paper. Verify that the paper guides are touching the paper.
The manual-feed prompt is set to  Always. The product
always prompts for manual feed, even if the tray is loaded. Load Tray 1 with paper, or, if the paper is loaded, press the
OK
 button.
Or, change the manual-feed prompt setting to  Unless
loaded , so that the product prompts for manual feed only
when the tray is empty.
The  Use Requested Tray  setting on the Manage Trays
menu is set to  Exclusively, and the requested tray is empty.
The product will not use another tray. Load the requested tray.
Or, change the setting from 
Exclusively to First on the
Manage Trays  menu. The product can use other trays if no
media is loaded in the specified tray.
ENWW Paper does not feed automatically
203
 
						

							Improve print quality
You can prevent most print-quality problems by following these guidelines.
●
Use the correct paper type setting in the printer driver
●
Adjust color settings in the printer driver
●
Use paper that meets HP specifications
●
Print a cleaning page
●
Calibrate the product to align colors
●
Check the print cartridges
●
Use the printer driver that be st meets your printing needs
Use the correct paper type setting in the printer driver
Check the paper type setting if you are having any of the following problems:
●Toner is smearing on the printed pages.
● Repeated marks occur on the printed pages.
● Printed pages are curled.
● Toner flakes off the printed pages.
● Printed pages have small unprinted areas.
Change the paper type setting for Windows
1.
On the File  menu in the software program, click  Print.
2. Select the product, and then click the  Properties or Preferences  button.
3. Click the  Paper/Quality  tab.
4. From the  Paper type  drop-down list, click the  More... option.
5. Expand the list of  Type is: options.
6. Expand each category of paper types until you find the paper type that you are using.
7. Select the option for the type of paper you are using, and click the  OK button.
Change the paper type setting for Mac
1. On the File  menu in the software program, click the  Print option.
2. In the Copies & Pages  menu, click the Page Setup  button.
3. Select a size from the  Paper Size drop-down list, and then click the  OK button.
204 Chapter 11   Solve problems ENWW
 
						

							4.Open the  Finishing  menu.
5. Select a type from the  Media-type drop-down list.
6. Click the Print button.
Adjust color settings in the printer driver
Change the color theme for a print job
1.On the File  menu in the software program, click  Print.
2. Click  Properties or Preferences .
3. Click the Color  tab.
4. Select a color theme from the  Color Themes drop-down list.
●Default (sRGB)
: This theme sets the product to print RGB data in raw device mode. When
using this theme, manage color in the software  program or in the operating system for correct
rendering.
● Vivid
: The product increases the color saturati on in the midtones. Use this theme when
printing business graphics.
● Photo
: The product interprets RGB color as if it were printed as a photograph using a digital
mini lab. The product renders deeper, more saturated colors differently than with the Default
(sRBG) theme. Use this theme when printing photos.
● Photo (Adobe RGB 1998)
: Use this theme with printing digital photos that use the
AdobeRGB color space rather than sRGB. Turn off color management in the software
program when using this theme.
● None
ENWW Improve print quality
205
 
						

							Change the color options
Change the color options settings for the current print job from the color tab of the printer driver.
1.On the File  menu in the software program, click  Print.
2. Click  Properties or Preferences .
3. Click the  Color tab.
4. Click the  Automatic  or Manual  setting.
● Automatic
 setting: Select this setting for most color print jobs
● Manual
 setting: Select this setting to adjust th e color settings independent from other
settings.
NOTE: Changing color settings manually can impact output. HP recommends that only
color graphics experts change these settings.
5. Click the  Print in Grayscale  option to print a color document in black and white. Use this
option to print color documents for photocopying or faxing.
6. Click the  OK button.
Use paper that meets HP specifications
Use different paper if you are having 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.
● Printed characters seem misformed.
● Printed pages are curled.
206 Chapter 11   Solve problems ENWW
 
						

							Always use a paper type and weight that this product 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.
Print a cleaning page
Print a cleaning page to remove dust and excess toner from the paper path if you are having any of the
following problems:
●Specks of toner are on the printed pages.
● Toner is smearing on the printed pages.
● Repeated marks occur on the printed pages.
Use the following procedure to print a cleaning page.
1. At the product control panel, press the Home 
 button.
2. Open the following menus:
●Device Maintenance
● Calibrate/Cleaning
3. Select the  Print Cleaning Page  item, and press the OK button to print the page.
4. The cleaning process can take several minutes.  When it is finished, discard the printed page.
Calibrate the product to align colors
Calibration is a product function that optimizes pr int quality. If you experience any image-quality
problems, calibrate the product.
1. Press the Home 
 button.
2. Open each of the following menus:
●Device Maintenance
● Calibrate/Cleaning
● Full Calibration
ENWW Improve print quality
207
 
						

							Check the print cartridges
Check each 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.
If you determine that you need to replace a print ca rtridge, print the supplies status page to find the
part number for the correct genuine HP print cartridge.
Type of print cartridge Steps to resolve the problem
Refilled or remanufactured print
cartridge Hewlett-Packard Company cannot recommend the use of non-HP supplies, either
new or remanufactured. Because they are not HP products, HP cannot influence
their design or control their quality. If you are using a refilled or remanufactured
print cartridge and are not satisfied with the print quality, replace the cartridge with
a genuine HP cartridge.
Genuine HP print cartridge 1.The product control panel or the supplies status page indicates  Very Low
status when the cartridge has reached the end of its designated life. Replace
the print cartridge if print quality is no longer acceptable.
2. Visually inspect the print cartridge for damage. See the instructions that follow.
Replace the print cartridge if necessary.
3. If printed pages have marks that repeat several times at the same distance
apart, print a cleaning page. If this does not solve the problem, use the
repeating defects information in this document to identify the cause of the
problem.
Use the printer driver that best meets your printing needs
You might need to use a different printer driver if  the printed page has unexpected lines in graphics,
missing text, missing graphics, incorr ect formatting, or substituted fonts.
HP PCL 6 driver
●Provided as the default driver. This driver is automatically installed unless you
select a different one.
● Recommended for all Windows environments
● Provides the overall best speed, print quality, and product-feature support for
most users
● Developed to align with the Windows Graphic Device Interface (GDI) for the
best speed in Windows environments
● Might not be fully compatible with third-party and custom software programs
that are based on PCL 5
208 Chapter 11   Solve problems
ENWW
 
						

							HP UPD PS driver●Recommended for printing with Adobe® software programs or with other
highly graphics-intensive software programs
● Provides support for printing from postscript emulation needs, or for postscript
flash font support
HP UPD PCL 5 ●Recommended for general office printing in Windows environments
● Compatible with previous PCL versions and older HP LaserJet products
● The best choice for printing from third-party or custom software programs
● The best choice when operating with mixed environments, which 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
HP UPD PCL 6 ●Recommended for printing in all Windows environments
● Provides the overall best speed, print quality, and printer feature support for
most users
● Developed to align with Windows Graphic Device Interface (GDI) for best
speed in Windows environments
● Might not be fully compatible with third-party and custom software programs
that are based on PCL 5
Download additional printer drivers from this Web site: www.hp.com/go/lj500colorM551_software
.
ENWW Improve print quality
209
 
						

							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 that the control panel indicates it is ready.
◦If the control panel does not indicate the product is ready, turn the product off and then on
again.
◦ If the control panel indicates the product 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 cable 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. Using generic printer 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 fire wall 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.
210 Chapter 11   Solve problems ENWW
 
						

							The product prints slowly
If the product prints, but it seems slow, try the following solutions.
1.Make sure the computer meets the minimum sp ecifications for this product. For a list of
specifications, go to this Web site: 
www.hp.com/support/lj500colorM551 .
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 to ner to the paper. If the paper type setting is not
correct for the type of paper you are using,  change the setting to the correct paper type.
ENWW The product does not print or it prints slowly
211
 
						

							Solve walk-up USB printing problems
●The Retrieve From USB Settings 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 Open From USB menu
The Retrieve From USB Settings menu does not open when you
insert the USB accessory
1. You must enable this feature by using the co ntrol-panel menus or the HP Embedded Web Server
before it can be used.
To enable this feature by using th e control-panel menus, access the  Administration menu,
General Settings  sub menu, Retrieve From USB Settings  sub menu, and then select
Enable . To enable this feature by using the HP Embedded Web Server, access the  Print tab.
2. You might be using a USB storage accessory or a file 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.
3. If another menu is already open, close that menu and then reinsert the USB storage accessory.
4. The USB storage accessory might have multip le 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 remove the partit ions, or use a different USB storage accessory.
5. The USB storage accessory might require more 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.
6. 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 that paper is in the tray.
2. Check the control panel for messages. If paper is jammed in the product, clear the jam.
212 Chapter 11   Solve problems ENWW