HP LaserJet M4349 Multifunction Printer series - Manual (Page 218)

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 on page 77 .
2. If the media is rough, and the toner easily rubs off, open the Administration menu at the device
control panel. Open the Print Quality menu, select Fuser Modes , and then select the media type
you are using. See Print Quality menu on page 48 .
3. Try using a smoother media.
Lines
A
A
A
A
A
B
B
B
B
B
C
C
C
C
C
a
a
a
a
a
c
c
c
c
c
b
b
b
b
b
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 on page 156 .
3. Replace the print cartridge.
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°.
204 Chapter 11 Problem solving ENWW