TallyGenicom 6300 Series, Руководство по обслуживанию

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Chapter 1. Technical Overview
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1.3.3.6 Forms Stacking
The 6306 and 6312 are designed to stack most forms of the specified length and thickness without
operator intervention, provided that proper set up of tractor position has been made. Testing is
performed per Tally Specification 611740.
Proper set up involves adjusting the tractor position such that there is no deformation in the shape
of the sprocket pin-feed holes in the printed stack of fanfold forms. In addition, printing on the
form perforation must be avoided.
Paper moves through a guide at the printer rear and then falls through a set of passive paper
stacking chains that help to break the column of paper in the proper directions at the form
perforations. The paper is stacked at the back of the cabinet.
While this system will usually collect the printed forms in an organized fashion, no universal
guarantee can be made for all forms or conditions.
1.3.4 Platen
The platen position in the 6306 and 6312 is controlled by a stepper motor drive. Keys on the front
panel allow the platen gap to be increased or decreased as desired. Up to 10 different forms
configurations may be stored with the form length, width, and platen gap information included.
Thus, on any given form, if the configuration is called up the platen gap will automatically be set
to the right value. When not printing, the platen automatically rotates to the open position.
1.3.5 Sensors
The 6306, 6312 incorporate a number of techniques for detecting and correcting faults of all types.
Fault recovery is quick, easy, and prevents loss of host data. Paper and printing faults are detected
by means of sensors. Electronics faults are detected by a series of self-tests automatically done at
power-up. Faults in the print engine, such as a defective hammer drive transistor, are monitored in
real time with the printing function halted to avoid damage if a fault condition is detected. Faults
in the host interface or host data are detected as they occur. Each fault is typically announced on
the Control Panel by displaying a descriptive fault message, lighting the Fault LED, and sounding
an audible alarm.
1.3.5.1 Paper Out
The Paper Out sensor detects the end of the last form. The sensor is located below the print station
on the left side of the printer, and provides a paper out condition while the last form is printing.
This early detection can be overridden to enable printing to the true end-of-form. A Paper Out
fault results in an “off line” condition.