Vodavi STARPLUS Triad XTS, Installation Manual

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Main Processing Board Installation 3-15
Chapter 3 - System Installation
Removing a PCB
Reverse the Inserting a PCB procedure. Installation method of the PCB is shown in Figure 3-9 .
There is a ground tab located on the top and bottom of each PCB toward the front end of the
card. There is also a ground tab located to the right of each card guide in each cabinet. Make
sure when the PCBs are inserted into the card guide and secured in their respective card slots,
that the ground tab on each card mates with the ground tab on each card guide. This ensures
a good ground potential to reduce RFI and EMI interference possibilities.
Figure 3-9: PCB Installation
Main Processing Board Installation
The Main Processing Board (MPB) is installed in the MPB PCB card slot (slot MPB) of Cabinet 0.
The MPB may be equipped with 2 add-on boards, a PMU for software programming and a
MODU for modem access to the system.
Lithium Battery
The MPB contains a lithium dry-cell to maintain memory and real-time clock functions. The
battery is soldered on the MPB and connected to the circuitry by the ON-OFF Dip Switch.
Make sure the switch is set to the ON position before installing the MPB.