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T
r
oubleshootin
g
9.5
Print-related Problems
N
o
te:
The
C-650 Plus
printer has the function of overheating protection. If overheating
protection will be active the printer may slow down printing speed or even stop
printing after a long time printing (until printhead’s temperature returns normal). This
function can
p
revent
p
rint head from bein
g
destro
y
ed if
p
rint head is over heated.
•
Print faint or of poor qualit
y
.
•
Have you used the correct paper? See Chapter
6
Technical Data
which contains a full
specification of the paper you can use. Replace the paper if it does not match the
specification.
•
Make sure that the ribbon is stretched correctly.
•
Does the ribbon need changing? Replace it with a new ribbon if necessary.
•
Is the ribbon cartridge properly installed? Adjust as necessary.
•
Characters do not print evenl
y
or are not uniform in pitch
•
Examine the paper pathway for dirt or other obstruction that may cause the gap
between print head and platen to vary. Remove the obstruction.
•
Incorrect installation of ribbon box or the ribbon tied.
•
Part of printed text is missing (loss of data)
•
If you are using serial communication check the buffer control setting in Setup.
•
Check the data flow control settin
g
on the host com
p
uter.
•
Dot Missing
•
If white lines appear on characters at certain fixed position, there are probably
several needles broken or crooked. When this happens, please contact your printer
supplier to replace the dama
g
ed printhead.
N
o
te:
Please avoid printing on the edge of the paper! It may cause printer needle
broken
.
9-3