Omron NS12-TS00 Setup Manual page 62

3-7 Installing the Video Input Unit
2. Secure the four corners of the Video Board with screws.
3. Insert screws in the screw holes for attaching the cover and tighten them slightly.
3-30
Secure these four places with screws.
Align the cover's screw holes with the screws and mount the cover.
Insert the screws first.
Mount the cover.