Specifications

LA 310 - Service Manual
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OVERVIEW
The LA 310 is a reliable, low cost, wide carriage, 9 wire dot matrix printer. It is designed
to be a personal desk top printer suitable for general business applications in a small to
medium computer environment. It has flexible paper handling and is capable of printing
on single sheets, continuous forms, multiple part forms, labels, and envelopes.
The LA 310 supports serial and parallel interfaces. Both are located on the main board.
The serial interface connects with Digital compatible systems through Digital's DEC-
connect, modular 6-pin type connector (MMJ). The parallel interface connects through
a standard 36-pin Centronics type.
The active port is initially selected via the Setup function, though the printer can be
connected to both serial and parallel ports, and switches automatically between them
when data is received. Protocol can be determined automatically by the active port, even
if the port is changed. Protocol can also be switched from the front panel or by software.
The LA310 Printer contains the following protocols:
- DEC-ANSI-Compliant Printing Protocol Level 2 (DEC PPL2)
- IBM Proprinter III.
- Epson FX-1050
The printer has a slot for optional cartridges for one of the following:
- Optional emulation.
- Fonts.
- Additional character sets.
The LA310 is produced in three voltage models to meet all worldwide voltage require-
ments.
The LA310 allows the user to select either HSD, NLQ1, NLQ2 or Quiet print mode. In
Quiet Mode acoustic noise is reduced to a minimum.
The LA310 also has self test diagnostics. These are initiated by pressing front panel
switches when the power is switched on.