The pronoun them in the sentence ".insert the FINE Cartridges into the FINE C...

IMPORTANT NOTICE

CAUTION
PROPERHANDLINGOFTHE FINECARTRIDGES
Handle the FINE Cartridges of this product properly, observing
the cautions noted below. Improper handling causes
malfunction or other problems in the product, as well as
damage to the FINE Cartridges.
Note:

1) When you install the FINE cartridges in the product, insert
the FINE Cartridges into the FINE Cartridge Holder
carefully not to knock them against the sides of the holder.
Also be sure to install them in a well-lit environment.
For details, refer to your setup sheet.

2) Do not attempt to disassemble or modify the FINE
cartridges.

3) Do not handle the FINE Cartridges roughly such as
applying them excessive pressure or dropping them.

4) Do not rinse or wipe the FINE Cartridges.

5) Once you have installed the FINE Cartridges, do not
remove them unnecessarily.

(Taken from Canon Inc. 2008 - Printed in Vietnam)