
Appendix C – Installing an MVP428
Upgrade Card
This appendix describes how to install an additional circuit board into the MVP410, changing it from a 4‐channel VOIP to an 8‐channel VOIP.
Procedure Overview
(A)Attach four standoffs to main circuit card.
(B)Mate the 60‐pin connectors (male connector on main circuit card; female on upgrade card).
(C)Attach upgrade card to main circuit card (4 screws).
* *
(A)
Replace main card screws with standoffs here *
(2 places). Add standoffs here
(2 places).
(B)
Mate
(C)
Attach upgrade card (screws into standoffs
Installing the Card
1.Power down and unplug the MVP410 unit.
2.Using a Phillips driver, remove the blank cover plate at the rear of the MVP410 chassis. Save the screws.
screws on blank cover plate (2)
3.Using a Phillips driver, remove the three screws that secure the main circuit board and back panel assembly to the chassis.
Important: Follow standard ESD precautions to protect the circuit board from static electricity damage.
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