Epson LX-810 User Manual page 217

Problem
Using an optional
interface, the printer
does not operate
properly.
The printer does not
print or the printout
is
not what you
expected.
Solution
The interface board may be loose or not
properly connected. Check that the
interface board is correctly inserted into
the connector on the main board. Refer to
5-45, 5-47.
You may not be using the correct
interface. Check the specifications to make
sure that you can use the interface with
this printer. Refer to
You may not be using the correct cable.
Make sure that the cable matches the
specifications of the interface.
The DIP switches or jumpers on the
interface board may not be set correctly.
Refer to the interface manual for the
correct settings.
The computer and interface settings may
not match. Match the settings for each
condition.
5-37.
Troubleshooting
Options
7-31