Chapter 2 - Blade Installation and Startup
Chapter 2 2 - 5
SECTION 2-2
Blade INSTALLATION
2.2.1 Handling the Blades
The blades are sensitive to static discharge. To minimize static discharge, keep blades in static free bags when
not installed. Observe the following when installing or removing a blade:
● Ground Controlling/Base Chassis and Expansion Chassis.
● Wear a grounded wrist strap to install/remove any blades.
● Do not touch blade components. Handle with the two thumb screws on either side of the blade.
● Although it is recommended to installed the blades with the system power off, all blades can be installed
hot (except the CCPU, EXIFU, MEMDB, VOIPDB, and VMDB).
● The Expansion chassis must only be installed with the system power OFF.
2.2.2 "Busying Out" Extension/Line Blades
Program 90-05-01, Item 3 "busies out" idle circuits. Extensions/lines cannot make a call or be called. Calls in
progress before the blade is "made-busy" are not affected. The blade can be pulled out without interrupting a
call in progress.
An extension/line Blade Status LED:
● Normally flashes
● Lights steady when "made-busy" with an extension/line in use
● Goes out when the all extensions/lines are "made-busy" (idle)
2.2.3 Installing an Extension or Trunk Blade (Figure 2-1)
2.2.3.1 To install an extension/trunk blade with the system running:
● Insert the blade within the guide rail and push the blade securely into position. After
installing all the blade, tighten the two thumb screws on either side of the blade.
● The Status LED starts flashing when the blade starts processing (15 seconds).
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