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5 — Installing and removing modules
5.1
Control card modules
Figure 5-1 shows the location of the primary rate, data interface, EPROM and
personality modules on the Control card.
5.2
Opening the unit
To open the unit, you need a #2 Phillips screwdriver.
Procedure 5-1 To open the unit
1
2
5-2
Figure 5-1 Location of modules on the Control card
LIM (P1)
Interface
module
(position 2)
Interface
module
(position 1)
Jumper blocks
Danger — Hazardous voltages inside—ensure that the power is off
before removing the top cover.
Warning — Electronic circuitry is easily damaged by electrostatic
discharge. Wear a properly attached antistatic wrist strap before handling
any electronic component. Handle the modules by their edges.
Ensure that the unit is turned off and that the power cord is unplugged.
Remove the seven top cover screws and slide off the top cover (see Figure 5-2). If
the unit has rack-mount brackets attached, remove them also.
LIM (P2)
Jumper blocks
(J37, J40)
(J41, J44)
2902 MainStreet Technical Practices
EPROMs
1 2
3 4
90-2906-01
May 2002
8839
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