Grass Valley Concerto Routing Matrix v.1.8.1 - Manual (Page 107)

Concerto — Installation and Service Manual 107
Option Installation
9. Secure the TDM sub-module to the Audio module by finger tightening
the four nuts to the sub-module on the front side of the Audio module.
See
Figure 55 , the Audio module will be on the plastic pin between the
spacer and the nut.
10. Align the Audio module in the appropriate frame slot.
11. Slide the module into the frame.
12. Gently push the module to engage the backplane.
13. Close the ejector tabs.
Repeat this procedure for installing each of your TDM sub-modules.