NEC SV8500, Operation And Maintenance Manual

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CHAPTER 5 Operation Procedure for System with PIR
4-IMG
Replace STBY-side related circuit cards
(CPU, GT, TSW, MUX, EMA) with a spare,
and check. Replace the circuit cards (CPU, GT, TSW,
MUX, EMA) individually by referring to the
following:
• CPU Card Replacement Procedure
• EMA Card Replacement Procedure
• EXB (EXB-PIR/EXB-TSW) Card
Replacement Procedure
• GT Card Replacement Procedure
• Replacement Procedure of TSW
(Time Division Switch) Circuit
Card
• Replacement Procedure of MUX
(Multiplexer) Circuit Card
Place the circuit cards (CPU, GT, TSW, MUX)
into ACT mode by executing CPU changeover.
(Refer to
SYSTEM CONTROL PROCEDURES )
Check to see if a station-to-station connection
can be set up to identify the circuit card
responsible for the fault.
When a fault is not indicated, set
the faulty systems to STBY side
in advance by executing CPU
changeover. Refer to
SYSTEM
CONTROL PROCEDURES in
Chapter 2.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
START
END