TallyGenicom 2265+, Maintenance Manual

Page: 122 / 190

6.1.3
Adjusting Parallelism
Printhead/Platen
You must adjust parallism of printhead and platen if the printout is not satisfactory
(one side of the printed matter is smudged or too light) or in case of
changing/replacing the horizontal system (carriage etc.)
Necessary tool: Feeder gauge 0.05 -1.5 mm
– Remove top case (see chapter 5.1.1).
– Remove ev. Paper and Color ribbon.
– Remove transparent Paper Guide at the carriage.
– Push manually the thoothed segment on the right side to the most backward
position (in direction to the technician).
– Place the printhead at the most right position.
– Check the clearance head/platen (should be 1.4 mm; if not do adjustment
Head/Platen Gap, chapter 6.1.2)
– Move head to the most left position
– Check the clearance head/platen by means of a feeler gauge.
– Turn the eccentric lever “A” on the left side wall. Turn the lever backwards if the
clearance (1.4 mm) is too big. Turn the lever to the front if the clearance
(1.4 mm) is too small.
Important:
The tolerance allowed is 0.05 mm.
– Install transparent Paper Guide at the carriage
– Install the top case
– Install the ribbon
– Make a test printout
– Optional:
– Set AGA = Off
– To run a visual check of the parallelism printhead/platen increase the clearance
until only a little of the printout is still to see. Compare the left with the right part
of the printout. There should only be a little difference in the blackening of the
printed matter.
– Switch printer off
– Set AGA = ON (see chapter 4 “Testmodes and Troubleshooting”) if required
– Adjust AGA as described in chapter 6.3.2.
Mechanical Adjustments Adjustments
6-4