8.1.6 THERMAL PRINT HEAD
The print head should be cleaned monthly, initially, to prevent debris from building up
on the print element. The required cleaning interval varies greatly depending on the
quality of the ticket stock and the amount of dust entering the print area. Excessive
dirt build up on the print head will result in reduced quality. Continuing to run the print
head in a dirty condition will reduce its life expectancy as it is unable to diffuse its heat
properly.
The thermal print head can be removed for cleaning or replacement, as follows:
(Please refer to figures 9a - c)
1.
Make sure power is off and the AC cord is disconnected from the printer.
2.
DO NOT UNPLUG CABLE FROM PRINT HEAD.
3.
Lift up on the cam lock assembly (located above the head mounting block) to
remove pressure from the thermal head. (see figure 9a)
4.
Lift up on the head mounting block/thermal head to remove. (see figure 9b)
5.
Clean the thermal print head surface (the side that makes contact with the paper)
with isopropyl alcohol and Q-tip or soft paper towel. (see figure 9c)
6.
Install the head by reversing the above procedures.
7.
Restore pressure to the head by pushing down on the cam lock assembly.
8.
The printer in now ready for operation. If the print quality is still poor then the
thermal head needs to be replaced.
9.
Lift up on the head mounting block/thermal head to remove it (see figure 9b).
Remove the ribbon connector from print head and then remove
print head from mounting block by removing two unmarked screws.
10. Install the new print head by reversing step 9.
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