Vertical comdial DX-120, Руководство по установке и обслуживанию

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DX-120 Installation and Maintenance Manual
I
NSTALLING THE
DX-120
Adding an APM4 (continued)
INSTALLING THE APM4
1) Be sure that the entire system is turned off.
2) Remove the KSU 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) Remove the APM4 module from the packaging and locate the four nickel-color standoffs packaged
with the module.
7) Position the APM4 over the left-hand side of the 408M/E and any other extension modules already
installed.
NOTE
In the KSU, extension modules are always installed on the left-hand side.
8) Use the four nickel-color standoffs supplied with the APM4 to secure the APM4 in position.
Installing the APM4 (continued on next page)
Extension Number Matrix Per Installed Location
KSU Connector used Extension numbers in
KSU1
Extension Numbers in
KSU2
Notes
APM4 Connector
(SLOT 4)
149,150,151,152 153,154,155,156 KSU1 analog ports are standard
J2 Extension
Expansion (SLOT 2)
109,110,111,112 133,134,135,136 Since the profile of the APM4
module is higher than the other
modules, only one Extension
Expansion connector can be
used for APM4 modules.
J3 Extension
Expansion (SLOT 3)
117,118,119,120 141,142,143,144