TallyGenicom 6300 Series Maintenance Manual

Also see for 6306: Specifications Brochure Quick start guide Operator's manual Specifications

Contents

TallyGenicom 6300 Series Maintenance Manual Manual pdf 14 page image

6300 Series Maintenance Manual81.3.5.2 Paper MotionThe Paper Motion sensor monitors the motion of paper through the tractors by looking for thepassage of paper sprocket holes. The sensor is located on the upper left paper tractor. If no paperis present in this tractor, or if paper is present in the tractor but is not moving, a fault is generated.Paper Motion fault results in an “off line” condition.A proprietary adaptive fuzzy logic algorithm is used in order to provide accurate sensing over avariety of forms. This algorithm is also designed to be tolerant of paper dust build-up.1.3.5.3 ShuttleThe Shuttle sensor monitors the amplitude and position of the shuttle while printing. If the shuttlefails to stay within the expected range, it is stopped and a shuttle fault is announced. If the shuttlefails during ramp-up a shuttle fault is signaled. A shuttle fault results in an “off line” conditionwith printing suspended.1.3.5.4 TemperatureThe hardware design, coupled with a scanning software algorithm, allows for direct thermalsensing on every print hammer coil. When a coil temperature is detected to be within a thermalalert range the rate of printing is slowed by forcing additional shuttle cycles to occur for each rowof print. When all hammer coil temperatures fall below the alert range, optimal print speed isrestored.1.3.5.5 Ribbon Fault Detect (6306 and 6312)The ribbon fault detect system senses the motion of the ribbon by monitoring a spinning thin steeldisk inside the ribbon cartridge. This disk turns as the ribbon is driven through the hammer bank.A ribbon fault will occur if the ribbon either breaks, jams, or is not installed. A ribbon faultresults in an “offline” condition. (Note that this sensor also has black and silver regions and canthus be detected optically. This makes it compatible with earlier generation printers.)1.3.5.6 Ribbon Skip Over Weld (6312 only)On re-inking ribbons the ribbon platform incorporates and optical sensor that detects when theweld in the ribbon fabric is about to enter the print line. Printing is momentarily halted while theweld passes through the print line. This feature greatly increases the life of the ribbon, which isusually limited by the life of the fabric weld. It also eliminates the possibility of characters beingpoorly printed as a result of printing directly on the fabric weld.