Check Point - NEC Univerge SV8500 Operation And Maintenance Manual

4.5.1

Check Point

When repairing a speech path fault, consider that when any of the faults shown in Table 5-14 have occurred
in the system, it is possible that the TSW circuit card is at fault. Always check the alarm lamps on the TSW
circuit card.
PIR0
TSW/INT0
MUX 3
MUX 2
MUX 1
MUX
TSW0
<Symbols>
: Speech Path
: Circuit Card (ACT)
CHAPTER 5
Figure 5-14 Speech Path Block Diagram (1-IMG)
PIR3
MUX
LC/TRK
PIR 2
MUX
LC/TRK
PIR 1
MUX
LC/TRK
LC/TRK LC/TRK
: Cable
: Circuit Card (STBY)
– 628 –
Operation Procedure for System with PIR
MUX
LC/TRK LC/TRK
MUX
LC/TRK LC/TRK
MUX
LC/TRK LC/TRK
LC/TRK LC/TRK LC/TRK
, etc.
TSW/INT1
MUX 3
MUX 2
MUX 1
MUX
TSW1