Troubleshooting - Casio KL-7400 User Manual

Troubleshooting

Consult the troubleshooting tables below whenever you start to have prob-
lems with the printer. If the information here does not solve the problem, initial-
ize printer memory (page 11). Note initialization will cause all data stored in
printer memory to be lost. Always keep separate written copies of important
information. If memory initialization does not solve the problem, contact your
original retailer or nearest authorized CASIO service center.
Symptom Possible Cause
Nothing The display contrast
appears on setting needs
the display adjustment.
when I
The AC adaptor is not
press .
connected properly.
Battery power is low,
or the wrong type of
AC adaptor or
batteries are being
used for power.
Batteries are not
loaded properly.
The print head is
overheating.
The printing Only spaces are input
operation is for the label.
finished
normally,
but nothing
is printed.
50
E
Recommended Action
Adjust the display contrast
setting. (page 46)
Make sure the AC adaptor is
properly connected.
(pages 10, 48)
Change to the AC adaptor that
comes with the printer or
replace the current batteries
with a fresh set of AA-size
alkaline batteries (supplied by
you). (page 47)
Reload the batteries properly.
(page 47)
Wait for a while and try again
later.
Input the text you want to
print.
Symptom Possible Cause
Printing is The print head or roller
not clear. is dirty.
Printing is
There is slack in the
poor
ink ribbon.
quality.
Printing is
The tape cartridge is
too light.
not loaded properly.
Battery power is low.
Improper print density
Cannot Battery power is low,
print. or the wrong type of
AC adaptor or
batteries are being
used for power.
The print head is
overheating.
I can't input The FUNCTION key
text. has been pressed.
Recommended Action
Clean the print head and
roller. (page 49)
Take up the slack in the ink
ribbon and correctly reload the
tape cartridge. (page 13)
Re-load the tape cartridge
properly. (page 13)
Change to AC adaptor power
or load a fresh set of batteries
(supplied by you). (page 47)
Adjust the print density. (page
46)
Change to the AC adaptor that
comes with the printer or load
a fresh set of AA-size alkaline
batteries (supplied by you).
(page 47)
Wait for a while and try again
later.
Press ESC to cancel the
FUNCTION key operation.