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6 - 106 Installing ETUs (Circuit Cards)
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Document Revision 3 Electra Elite IPK II
A 4-port CTP( )-U10 ETU must be programmed as an 8-port
CTP( )-U10 ETU. Ports 5~8 should not be assigned extension
numbers or included in the hunt group.
A 12-port CTP( )-U10 ETU must be programmed as a 16-port
CTP-U10 ETU. Ports 13~16 should not be assigned extension
numbers or included in the hunt group.
7.3.4 Installing Drive on CTP( )-U10 ETU
1. Before installing the drive, make sure the four screws are
started, as shown in Figure 6-56 Before Installing the Drive.
They should not be tightened down all the way, as this prevents
mounting the drive on the ETU.
Figure 6-56 Before Installing the Drive
Handle the drive and DSP carefully! Do not drop the
drive or apply pressure to it. Do not touch the printed
circuit board unnecessarily. Doing so can make it
inoperable.
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