The Carriage holds all the necessary interface electronics for the main board to interact with the
printhead via the trailing cables. A set of spring-loaded connectors are the main interface Carriage-
printhead.
NOTE: It is very important that the contacts are clean, free of dust/ink to ensure a correct connection
between printhead and Carriage, as high-speed data are transmitted through this connection, and dust
could cause sporadic system errors. This is particularly important when replacing the printhead, as the
removal of the old printhead (extraction with a rotary movement) can cause the nozzle plate to touch
those contacts and create contamination that could cause problems with the new printhead. However,
manual cleaning of the contacts is not recommended.
The Carriage also has additional functionality:
1. Transmits the pressure from the Prime Pump via off-axis coupling to each of the four cartridges
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Off-axis coupling connects with the Carriage via the side connection bay:
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An internal passage of the Carriage transmits the air pressure towards the printhead.
24 Chapter 1 Printer fundamentals ENWW
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