Vertical comdial DX-120, Installation And Maintenance Manual

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DX-120 Installation and Maintenance Manual
I
NSTALLING THE
DX-120
Power-up Initialization - Cold Start (continued)
INITIALIZING THE DX-120
IMPORTANT!
If you have previously plugged in the power cords and/or turned on the power
supplies, turn OFF the power supply to the DX-120 KSUs and un-plug the DX-
120 AC power cords on KSU1 and KSU2.
1) Be sure that the entire system is turned off and unplugged.
2) Remove the KSU 1 cover (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 CPM and “NORMAL/COLD START” option strap (
in bottom right corner) of the
installed
CPM (JPE1).
Initializing the DX-120 (continued on next page)