HP Officejet Pro 8000 User Guide - Page 68

To calibrate the linefeed, To replace the printheads - power light blinking

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Chapter 5 12. Close the cover. 13. If the printhead light is still blinking, repeat the cleaning procedure described above for the printhead which corresponds to the blinking printhead light. 14. If the printhead light continues to blink, replace the printhead which corresponds to the blinking printhead light. 15. Wait while the device initializes the printheads and prints the alignment pages. If the device does not print the pages, start the alignment process manually. For more information, see To align the printheads. To calibrate the linefeed If your printout shows bandings (dark or light lines across colored block) or staggered lines, calibrate the printer's linefeed. • Control panel: Press and hold the Power button, press the Cancel button 14 times, press the Resume button six times, and release the Power button. • Embedded Web server: Click the Settings tab, click Device Services in the left pane, select Calibrate Linefeed from the drop-down list in the Print Quality section, and then click Run Diagnostic. • HP Toolbox (Windows): Click the Services tab, click Calibrate Linefeed and follow the onscreen instructions. • HP Printer Utility (Mac OS X): Click Calibrate Linefeed from the Information and Support panel. To replace the printheads NOTE: To find out which printheads work with your printer, see Supplies. 1. Open the cover. 2. Make sure paper is loaded in Tray 1. 3. If the carriage does not move to the left automatically, press and hold the Resume button until the carriage moves to the left. Wait for the carriage to stop moving. 4. Lift the printhead latch. 64 Maintain and troubleshoot

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12.
Close the cover.
13.
If the printhead light is still blinking, repeat the cleaning procedure described above
for the printhead which corresponds to the blinking printhead light.
14.
If the printhead light continues to blink, replace the printhead which corresponds to
the blinking printhead light.
15.
Wait while the device initializes the printheads and prints the alignment pages. If
the device does not print the pages, start the alignment process manually. For
more information, see
To
align
the
printheads
.
To calibrate the linefeed
If your printout shows bandings (dark or light lines across colored block) or staggered
lines, calibrate the printer's linefeed.
•
Control panel:
Press and hold the
Power
button, press the
Cancel
button
14 times, press the
Resume
button six times, and release the
Power
button.
•
Embedded Web server:
Click the
Settings
tab, click
Device Services
in the left
pane, select
Calibrate Linefeed
from the drop-down list in the
Print Quality
section, and then click
Run Diagnostic
.
•
HP Toolbox (Windows):
Click the
Services
tab, click
Calibrate Linefeed
and
follow the onscreen instructions.
•
HP Printer Utility (Mac OS X):
Click
Calibrate Linefeed
from the
Information
and Support
panel.
To replace the printheads
NOTE:
To find out which printheads work with your printer, see
Supplies
.
1.
Open the cover.
2.
Make sure paper is loaded in Tray 1.
3.
If the carriage does not move to the left automatically, press and hold the
Resume
button until the carriage moves to the left. Wait for the carriage to stop
moving.
4.
Lift the printhead latch.
Chapter 5
64
Maintain and troubleshoot