Canon USB Application Interface Board-D1 Service Manual page 14

2. Checks to Make Before Starting the Installation Work
If you are installing a USB Application Interface Board-D1 be sure that the Expansion
Bus-B1 already exists.
3. Installation
1) Remove the 4 screws [1].
2) Loosen the 2 screws [2].
3) Pull the face cover [1] in upward direction.
[1]
[1]
[2]
F-2-3
[1]
F-2-4
Chapter 2
2-3