Termination Resistors
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Termination Resistors
For parallel interface configurations, the printer is equipped with
470 ohm pullup and 1K pulldown terminating resisto rs located on
the printer motherboard, P/N 703220-001.
Generally, these terminating resistors are suitable for most
applications. If, however, the standard terminating resistor pac k is
not compatible with the particular interface driver requirements of
your host computer, other values or combinations of p ullup/
pulldown resistors may be necessary. For example, the
Dataproducts interface and some host computers require the use o f
220 ohm pullup and 330 ohm pulldown resistors.
If you are experiencing communication problems between the
printer and host (double or missing characters), the cause m ay be
the value of the termination resistors on the motherboard. Conta ct
your authorized service representative for instructions on rep lacing
the termination resistors.