Fujitsu DL3750+/3850+ manual Print Quality Problems and Solutions, Problem Solution

TROUBLE-SHOOTING

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.

7-2 User's Manual