HP LaserJet M4345 User Manual

NOTEThese examples depict letter-size media that  has passed through the device.
Light print (partial page)
1.Make sure that the print cartridge is fully installed.
2. The toner level in the print cartridge might be low. Replace the print cartridge.
3. The media might not meet HP specifications (for example, the media is too moist or too rough).
See 
Select print media .
Light print (entire page)
1.Make sure that the print cartridge is fully installed.
2. Make sure that the Economode setting is turned...

Specks might appear on a page after a jam has been cleared.
1.Print a few more pages to see if the problem corrects itself.
2. Clean the inside of the device and run a cleaning page. See 
Clean the device.
3. Try using a different type of media.
4. Check the print cartridge for leaks. If the print cartridge is leaking, replace it.
Dropouts 
1.Make sure that the environmental specifications for the device are being met.\
 See Printing and
paper-storage environment .
2. If the media is rough, and the...

Gray background  
1.Do not use media that has already been run through the device.
2. Try using a different type of media.
3. Print a few more pages to see if the problem corrects itself.
4. Turn over the stack in the tray. Also, try rotating the stack 180°.
5. Open the  Administration  menu at the device control panel. On the  Print Quality menu, increase
the  Toner Density  setting. See 
Print Quality menu.
6. Make sure that the environmental specifications for the device are being met. See 
Printing...

Loose toner 
Loose toner, in this context, is defined as toner that can be rubbed off the page.
1.If media is heavy or rough, open the  Administration menu at the device control panel. On the
Print Quality  submenu, select  Fuser Modes, and then select the media type you are using.
2. If you have observed a rougher texture on one  side of your media, try printing on the smoother
side.
3. Make sure that the environmental specifications for the device are being met.\
 See 
Printing and
paper-storage...

This type of defect might occur when using preprinted forms or a large quantity of narrow media.
1. Print a few more pages to see if the problem corrects itself.
2. Make sure that type and quality of the media you are using meet HP specifications. See 
Select
print media .
3. If the distance between defects is 44 mm (1.7 in), 58  mm (2.3 in), or 94 mm (3.7 in), the print
cartridge might need to be replaced.
Misformed characters
AaBbCc AaBbCc
AaBbCc
AaBbCc
AaBbCc AaBbCc
1. Print a few more pages to see if...

Curl or wave 
1.Turn over the stack in the tray. Also, try rotating the stack 180°.
2. Make sure that the type and quality of the media you are using meet HP specifications. (See
Select print media .)
3. Make sure that the environmental specifications for the device are being met.\
 (See 
Printing and
paper-storage environment .)
4. Try printing to a different output bin.
5. If media is lightweight and smooth, open the  Administration menu at the device control panel.
On the Print Quality  submenu, touch...

Vertical white lines  
1.Print a few more pages to see if the problem corrects itself.
2. Make sure that the type and quality of the media you are using meet HP specifications. See
Select print media .
3. Replace the print cartridge.
Tire tracks 
A
A
A
A
AB
B B
B
B C
C C
C
Ca
a
a
a
ac
c
c
c
cb
b
b b
b
This defect typically occurs when the print cartridge has far exceeded its rated life. For example, if
you are printing a very large quantity of pages with very little toner coverage.
1. Replace the print...

Scattered lines 
1.Make sure that the type and quality of the media you are using meet HP specifications. See
Select print media .
2. Make sure that the environmental specifications for the device are being met.\
 See 
Printing and
paper-storage environment .
3. Turn over the stack in the tray. Also, try rotating the stack 180°.
4. Open the  Administration  menu at the device control panel. Open the  Print Quality submenu and
change the  Toner Density  setting. See 
Print Quality menu.
5. Open the...

Random image repetition 
If an image that appears at the top of the page (in solid black) repeats further down the page (in a
gray field), the toner might not have been completely erased from the last job. (The repeated image
might be lighter or darker than the field it appears in.)
●Change the tone (darkness) of the field
 that the repeated image appears in.
● Change the order in which the images are printed. For example, have the lighter image at the
top of the page, and the darker image farther down...

Solve network printing problems
NOTEHP recommends using the device CD to install and set up the device on a network.
●Print a configuration page (see Use information pages
). If an HP Jetdirect print server is
installed, printing a configuration page also prints a second page that shows the network
settings and status.
● See the HP Jetdirect Embedded Print Server Administrators Guide
 on the device CD for help
and for more information about the Jetdirect configuration page. To open the guide, run the...