HP 0706124 REV B - Manual (Page 76)

3-20 Replacing Ink System Components
Replacing An Ink Tube
Replace an ink tube when switching ink colors or types, or if the
ink tube leaks. You need not replace an ink tube when you
change an ink reservoir and/or printhead without changing ink
color or type, if the tube is functioning normally.
Each of the ink tubes is routed to a specific ink tray position, to
enable the replacement of individual tubes without crossing or
tangling with other tubes.
Caution Always remove and replace ink tubes one at a time,
to ensure correct routing of the tube. Although the
printer can detect the proper placement of the ink
reservoirs and printheads, it cannot detect whether
the ink tubes are routed correctly. Incorrectly routed
ink tubes would likely mix inks in the printhead, and
cause printing problems.
Tip Wear protective gloves during this procedure to pro-
tect your hands from ink stains.
Fig. 3-11. Ink tube routing
To ink trays
From printheads