Novexx Solutions ALX 92x, Service Manual

Page: 279 / 824

06/16 Rev. 09 SERVICE MANUAL Service Mechanics
DPM – PEM – ALX 92x
81
Adjusting the printhead
position
In this chapter, „Printhead position“ means
the position of the printhead [170A] at the
printhead bracket [170B] in printing directi-
on.
The printhead position is factory-adjusted
and hasn´t to be changed in most of the ap-
plications.
Changing the printhead position is only re-
commended, if the following is the case:
•
A spare part printhead was installed.
•
The printout is considerably worse than be-
fore (regarding blackening and contrast)

During the adjustment, no other settings
may be changed, which influence the prin-
ting quality.

For test printouts use parameter
PRINT INFO > Dottest endless
.
Tool
Allen key 1.5 mm
Adjustment
1. Print a sample label (
PRINT INFO >
Dottest endless
).
2. Loosen all screws [171A] and [171B].
3. Turn in the set screws [171C] ½ turn.
4. Tighten the screws [171B].
5. Print a sample label and evaluate it:
If the printout became better:

Repeat steps 2 to 5 until the printout is
good enough or until it is worsening again.
If the printout became worse:

Repeat steps 2 to 5, but turn the set screws
out step by step, until the printout is good
enough or until it is worsening again.
If the printout is good enough:

Tighten all screws [171A] and [171B].

Secure the screws [171B] with locking var-
nish.
[170] Printhead = thermal printhead (A) + printhead bracket (B).
[171] Adjusting the printhead position by rotating the set screws (C).
B
A
A
A
B
B
C
C