MODEL 1980 SERIES PRINTER
OPERATION AND MAINTENANCE
DataMetrics Corporation
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5. FUNCTIONAL DESCRIPTION
5.1. Introduction
This chapter describes the major functional elements of the Model 1980 Series printer.
Information is provided concerning power distribution, the printing subsystem, control
console, and cooling system. Chassis interconnections are identified in Figure 5-1.
5.2. Printer Description
The Model 1980 Series printer provides laser hardcopy output of data received from a host
computer. The standard printer configuration incorporates an IEEE-1284B bi-directional
parallel interface (Centronics), a 10/100Base-T Ethernet and a USB v2.0 port. The
mechanical and electrical subsystems of the printer are described in the following
paragraphs.
5.2.1. Power Distribution
The Model 1980 Series printer utilizes the 110Vac primary power subsystem of the
commercial print engine. Prime power enters the chassis at the rear panel J1 connector.
110Vac power is sent through an EMI filter that provides attenuation of interference related
to input voltage and output current. Prime power exits the filter and is routed to a 8-ampere
circuit breaker/power switch at the front panel for 110Vac. The load side of the circuit
breaker provides ac power to the print engine input-power connector. A chassis ground stud
is located on the rear panel of the unit.
5.2.2. Printing Subsystem
The Model 1980 Series printer incorporates the printing subsystem architecture of the
Okidata C5400n printer as follows:
• “Formatter System” – Receives print data from the host, processes the image, and
transfers it to the Engine Control System. The Formatter System also provides the
interface between the user and the printer (Control Panel). Monitors and controls all of the
printer’s mechanical and electrical subsystems. It is the center of the printer’s operation.
Produces the actual physical image on the page. Moves paper or other print media
through the printer from one of the selected input trays (Tray 1 or MP).
Figure 5-1. Chassis Interconnections
5.2.2.1. Paper Movement
The paper feed system automatically picks print media from either Tray 1 or Tray MP and
delivers it to the registration roller. Before the media reaches the registration roller, the
separation pad separates any excess sheets of media and the registration shutter corrects
the media’s skew.
A top-of-page sensor detects the leading edge of the page. The paper is synchronized to
