Canon imagePRESS 1135 Series Service Manual page 1542

2) Remove the controller small cover.
• 7 screws (the removed cover and the screws will not be used anymore)
x7
4) Loosen the 8 screws, and remove the controller cover in the direction of the arrow.
9
Installation > Removable Hard Disk Kit-AA1 > Installation procedure
3) Remove the 3 screws of the controller cover.
F-9-256
F-9-258
9 Installation > Removable Hard Disk Kit-AA1 > Installation procedure
x3
9-125
F-9-257
9-125