TallyGenicom 6300 Series, Maintenance Manual

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6300 Series Maintenance Manual
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3.4.6 Printed Output Appears Shaky or Fuzzy
There are six things that can cause this problem.
1. The platen may be open too far.
2. The hammers are not firing properly.
3. Platen alignment may be incorrect.
4. Damaged platen.
5. The Shuttle Sensor is misaligned.
Step 1.
Run another print gap detection and verify that the print gap is at a reasonable
position by using the PRINT GAP adjust keys.
Step 2. Perform a Hammer Calibration procedure. This procedure is explained in Chapter 2,
in the TEST Menu Section, under the Diagnostic Category ( PrntCal Parameter).
If the hammers can not be calibrated, the problem is in the Controller CBA. Replace
the Controller CBA following the procedure explained in Chapter 4.
Step 3. Check and adjust the platen alignment guides. The Platen Gap should be .012 "
–
.014" with the platen fully closed.
Step 4.
Check the impact area of the platen and replace the platen if this area is damaged.