IBM 19 - Manual (Page 51)

When you finish, the black cartridges should be in the last slot
toward the back of the printer, then the cyan in the next slot, the
magenta in the third slot coming forward, and the yellow in the
front slot.
After the toner and developer are installed, you need to remove the
pressure-release pieces.
Chapter 2
I n i t i a l P r i n t e r S e t u p 2 - 1 9
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