Vertical comdial DX-120, Installation And Maintenance Manual

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DX-120 Installation and Maintenance Manual
I
NSTALLING THE
DX-120
Adding a KSU2 Second Cabinet
You can add one KSU2 to a KSU1. The KSU2 adds:
•
eight digital DX-120 extension ports
•
four CO line ports
•
one Power Failure Transfer port
•
Extension expansion connectors for two additional DPM8s or one APM4
•
Ribbon cable for one APM4
•
Ribbon cable for one COM4
INSTALLING THE KSU2 (CONNECTING THE KSU2 TO THE KSU1)
1) Be sure that the entire system is turned off.
2) Remove the cover from both the KSU 1 and KSU 2 (four screws at each corner).
3) Install a static discharge wrist strap on your bare wrist, and adjust it for a snug fit.
CAUTION
Be sure that the strap is touching bare skin and is not isolated by clothing.
4) Connect the wrist strap cord between the wrist strap and an AC or earth ground.
5) Connect a static discharge wrist strap to a suitable earth ground.
CAUTION
Circuit boards are susceptible to damage caused by electrostatic discharge.
You must keep this in mind as you handle the circuit boards. For additional
information, see Vertical publication IMI01-005, Handling of Electrostatically
Sensitive Components.
6) Locate the long cable attached to the 408E of KSU2, and route it out of the KSU2 cabinet into the
KSU1 cabinet so you can connect it to the CPM.
7) Locate the CPM at the right-hand side of KSU1 above the 408M (and COM4 if installed).
Installing the KSU2 (continued on next page)