HP 0706124 REV B - Manual (Page 67)

Switching Between Ink Sets 3-11
Switching between eight-color and six-color modes, however,
does require switching ink(s):
Caution When changing ink colors, if you change the print-
head and reservoir without changing the existing ink
tube, ink from the reservoir will mix with the differ-
ent ink in the ink tube, producing a third color. When
you change ink colors, you must replace the existing
printhead, tube, and reservoir with the printhead,
tube, and reservoir containing the new ink color.
The printer will display an error if you install a print-
head and/or reservoir in the wrong position for the
selected ink set, but it cannot detect whether the ink
tube does not match the other components.
Since inks of different dilutions are very difficult to
visually discern in the ink tubes, be sure to label all
components and replace them one color at a time, as
described in “Replacing Ink System Components” on
page 3-17.
C = Cyan, mC = Medium Cyan, lC = Light Cyan
M = Magenta, mM = Medium Magenta, lM = Light Magenta
Y = Yellow
K = Black
CX = Change Ink
1 x 8
1 x 6
2 x 6
Fig. 3-6. Possible modes with a 1x8 ink set