FUJITSU DL3750+/3850+ - Manual (Page 150)

TROUBLE-SHOOTING
7-2 User's Manual
Table 7.1 Print Quality Problems and Solutions
Problem Solution
Printing is too Make sure that the ribbon cartridge is
light or too dark. properly installed and that the ribbon feeds smoothly.
Make sure that the paper thickness lever is set for the
thickness of your paper. See Table 3.2 in Chapter 3.
Check ribbon wear. Replace the ribbon if necessary.
Stains or smudges Make sure that the paper thickness lever is set
appear on the for the thickness of your paper. See Table 3.2 in
page. Chapter 3.
Check ribbon wear. Replace the ribbon if necessary.
Check whether the tip of the print head is dirty.
Clean the head with a soft cloth if necessary.
The page is blank. Make sure that the ribbon cartridge is properly
installed.
Printing is erratic Make sure that the interface cable is securely
or the wrong connected to both the printer and computer.
characters are
printed. Many
Make sure that the printer emulation selected in
"?" characters are your software is the same as the emulation
printed. selected on the printer. See the section Selecting an
Emulation in Chapter 2.
If you are using an RS-232C serial interface, make
sure that the serial settings required by your software
or computer are the same as the settings on the
printer. See the section Changing Hardware
Options in Chapter 5.