Vodavi Starplus DHS, Technical Manual

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DHS Installation 2-31
6-Port CO Module
The 6-Port CO Module is installed to increase system capacity of CO lines. The 6-Port CO
Module is shipped with two 6-conductor cords, two surface-mount modular jacks and
four stand-off posts. Regardless of how many 3 x 8 modules are installed, only one 6-Port
CO Module may be installed. The 6-Port CO Module must be the last module installed. For
example, if a 6-Port CO Module is first installed as the first Expansion Module (JP3), and a
3 x 8 module is then installed, the 6-Port CO Module must be moved to the last expansion
position (JP4).
Figure 2-14: 6-Port CO Module
Follow these steps when installing the 6-Port CO Module:
1. Be sure that KSU power is turned OFF, and the KSU cover is removed.
2. Connect grounded wrist strap to a suitable earth ground.
3. Locate the screws that secure the 3 x 8 module already in place, and remove one of
the module securing screws only so the existing board stays in place. Retain the
removed screw.
4. Insert one of the supplied stand-off posts into the screw position where the screw
from Step 3 was removed.
5. Tighten securely by hand, finish tightening using a small hand tool. It is very
important not to over-tighten any screw or stand-off post as damage to the board
may occur.
6. Repeat Steps 3 through 5 until all module screws are replaced with stand-off posts.
7. Position the 6-Port CO Module over the stand-off posts installed and use the screws
removed in that process to secure it in place on the stand-off posts.
8. Once mounted, carefully insert the bus ribbon cable into the next available
expansion bus connector on the CPU Module. When the Option Module is installed, it
is necessary to remove the Option Module screws and lift the Option Module away
from the CPU Module for clear access to the CPU module bus connectors (JP3 and
JP4).