HP Designjet L28500 HP Designjet L28500 Printer Series - User's guide - Page 100

nozzles are easily damaged., Do not touch the surface of the printhead that contains the nozzles

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7. Rub the sponge against the contacts with a light force along the entire depth of the flex connector, inserting the wiper as far as allowed by the mechanical stop on the tool. 8. Take special care to clean all contacts thoroughly, including the ones at the lowest point of the connector. 9. Using the same sponge, clean the lower strip of electrical contacts on the printhead (unless the printhead is new). Avoid touching the upper set of electrical contacts. CAUTION: Do not touch the surface of the printhead that contains the nozzles, because the nozzles are easily damaged. 10. After waiting a few moments to allow both connectors to dry, replace the printhead into the printhead carriage. See Replace a printhead on page 113. 94 Chapter 12 Hardware maintenance ENWW

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7.
Rub the sponge against the contacts with a
light
force along the entire depth of the flex connector,
inserting the wiper as far as allowed by the mechanical stop on the tool.
8.
Take special care to clean all contacts thoroughly, including the ones at the lowest point of the
connector.
9.
Using the same sponge, clean the lower strip of electrical contacts on the printhead (unless the
printhead is new). Avoid touching the upper set of electrical contacts.
CAUTION:
Do not touch the surface of the printhead that contains the nozzles, because the
nozzles are easily damaged.
10.
After waiting a few moments to allow both connectors to dry, replace the printhead into the
printhead carriage. See
Replace a printhead
on page
113
.
94
Chapter 12
Hardware maintenance
ENWW