HP Officejet Pro L7400 User Guide - Page 63

Align the printheads

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1 Printer Information: Shows device information (such as the product model number, serial number, and firmware version number), the number of pages printed from the tray, the ink level information, and the printhead health status. 2 Test Pattern 1: If the lines are not straight and connected, align the printheads. For more information, see Align the printheads. 3 Test Pattern 2: If there are thin white lines across any of the colored blocks, clean the printheads. For more information, see Clean the printheads. 4 Test Pattern 3: If there are dark lines or white gaps where the arrows are pointing, calibrate the linefeed. For more information, see Calibrate the linefeed. Align the printheads Whenever you replace a printhead, the device automatically aligns the printheads to ensure the best print quality. However, if the appearance of your printed pages indicates that the printheads are misaligned, you can start the alignment process manually. • Control panel: Press the Setup button, select Tools, select Align Printer, and then press OK. Press OK when the alignment is done to continue. • Toolbox (Windows): Click the Services tab, and then click Align Printheads and follow the onscreen instructions. • HP Printer Utility (Mac OS): Click Align from the Information and Support panel. Maintain the printheads 59

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1
Printer Information:
Shows device information (such as the product model number, serial
number, and firmware version number), the number of pages printed from the tray, the ink
level information, and the printhead health status.
2
Test Pattern 1:
If the lines are not straight and connected, align the printheads. For more
information, see
Align
the
printheads
.
3
Test Pattern 2:
If there are thin white lines across any of the colored blocks, clean the
printheads. For more information, see
Clean
the
printheads
.
4
Test Pattern 3:
If there are dark lines or white gaps where the arrows are pointing,
calibrate the linefeed. For more information, see
Calibrate
the
linefeed
.
Align the printheads
Whenever you replace a printhead, the device automatically aligns the printheads to
ensure the best print quality. However, if the appearance of your printed pages
indicates that the printheads are misaligned, you can start the alignment process
manually.
•
Control panel:
Press the
Setup
button, select
Tools
, select
Align Printer
, and
then press
OK
. Press
OK
when the alignment is done to continue.
•
Toolbox (Windows):
Click the
Services
tab, and then click
Align Printheads
and
follow the onscreen instructions.
•
HP Printer Utility (Mac OS):
Click
Align
from the
Information and Support
panel.
Maintain the printheads
59