User`s guide

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If the printer prints wrong characters
Checkpoint Action Reference
page
Is interface cable connected
correctly?
See Section 2.5. 24
Are the SWDIP switches set
correctly?
Set the SWDIP switches according
to the input method.
In serial input, “!”, “?”, “*” is printed
for the incorrect set at SWDIP
switch 3.
Set them according to the
computer communications
method.
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Is the program correct? Check the program.
Unless “;” is input following the
LPRINT Statement in BASIC,
usually CR and LF are
automatically output.

If the printing is light or dark
Checkpoint Action Reference
page
Is the temperature very high
or low?
Use the printer at 0 to 40 C.(32 to
104 F)

Are you using the specified
paper : TP411L?
Use the specified paper. 
Are the SWDIP switches set
correctly?
Check the print density SWDIP
switch settings.
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