Zebra 49889 ユーザーズマニュアル

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Preventive and Corrective Maintenance
Corrective Maintenance—Print Quality Adjustments
57518L-001 Rev. A
3/18/05
170PAX4 Maintenance Manual
145
Printhead Balance Adjustment
The balance hub position is adjustable to produce an even pressure across the full width of the 
printhead and platen roller.
1.
Perform the PAUSE Key Self Test by pressing PAUSE while turning On (l) the print 
engine.
2.
After printing a few labels, pause the print engine and reduce the 
DARKNESS
 
configuration parameter value until the test labels are a charcoal gray color.
3.
Print more PAUSE Key Self Test labels and observe the print quality.
4.
If lighter or no printing is observed on one side of the label as compared with the other, 
continue to step 5. If printing is even, printhead balance need not be adjusted. Continue to 
5.
Is the printing even?
6.
Loosen the balance hub lock set screw and then retighten the set screw 
until it is almost snug.
Figure 57 • Printhead Balance Adjustment (Right-Hand Printhead Shown)
If the printing is...
Then...
Even
The printhead balance does not need to be adjusted.
Go to 
.
Uneven
(light or missing printing is 
observed on one side)
Continue to 
.
Note • 
Continue to print Pause Self Test labels, while adjusting the hub for even printing.
1
Mainframe
2
Hub
3
Printhead Assembly
4
Adjustment Screw
5
Lock Set Screw
1
2
3
4
5
2
5