Belden grass valley MV-840 Series, User Manual, Page: 63 / 77

MV-841/851 User Manual
Module(s) Removal Procedure
Hardware Installation
Issue 1 Revision 1 Page 45 © 2020 Grass Valley, a Belden Brand
Rear module removal:
4. Remove all rear modules for slots that need to be emptied.

Unscrew rear panel securing screws on each module (two or four screws, depending on
the module being removed) and then remove the module.
The relevant rear slots are now emptied.
5. Now move to the front of the router.
6. Unlock and open the router front door and

open the relevant internal fan door (refer to Figure 19 on page 36).
Front module removal:
7. Locate the pair(s) of front modules to remove. Refer to Table 12 on page 42.
8. Remove all front modules from front slots that need to be emptied by pulling on the
two module eject levers and sliding the module out of the frame. See Figure 23.
9. Close and secure the internal fan door.

Close and lock the router front door.
All relevant slots should now be empty, both front and rear, ready for fitting one or more
MV-841/851 modules.
10. Continue immediately to read Section “Fitting Preliminaries” on page 46 before
starting Section “Module Fitting Procedure” on page 47.
Note: An MV-841/851 rear panel has handles to assist removal (see Figure 16
on page 33).
IMPORTANT When removing any module:
Take care not to knock high components mounted on the top- or on the
bottom-side of the module or any surrounding modules. Because any
knock may damage the module being removed, or the surrounding
modules in the router frame.
Figure 23 Removing Front Modules, showing use of module eject levers
Remove by pulling
module ejector lever
handles.