Intermec EasyCoder PX4i Service Manual page 95

EasyCoder PX4i and PX6i Service Manual
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The printhead is fi tted to a bracket using two screws. The printhead, the
printhead ribbon break shaft, and the bracket are always delivered as a
complete assembly and must not be dismantled. Two hooked fi ngers at
the rear of the bracket are fi tted over the headlift shaft so as to hold the
printhead in place. A U-shaped tab on either side of the bracket engage
the platen roller bearings when the printhead is closed, making sure that
the printhead becomes properly aligned with the platen roller. There are
no facilities for adjusting the position of the printhead relative the platen
roller, neither longitudinally nor laterally.
There are two sets of cables in a harness running to the printhead:
• The innermost cable is used for the power to the printhead and is con-
nected to P5 on the driver board.
• The outermost cable is used for data to the printhead and is connected
to J40 on the CPU board.
Note: It is important that the cable harness does not prevent the printhead
from moving or adjusting itself when it is lowered.
Bracket
Label
Printhead ribbon
break shaft
The printhead of EasyCoder PX6i looks in principle the same but is wider.
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"Finger"
Illustration shows the printhead of an EasyCoder PX4i.
Chapter 8 — Print Unit
Cable harness
"Finger"
Printhead
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