Canon i-SENSYS LBP6670dn User Manual page 114

(2) Remove the cover in the direction of the arrow.
3
Remove the slot cover.
(1) Remove the screw.
(2) Open the slot cover.
(3) Remove the cover in the direction of the arrow.
NOTE
About the location for installing ROM
Confirm the installation location and its orientation before installing the ROM module.
4
Install ROM.
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