NEC Univerge SV8500 Operation And Maintenance Manual page 690

4-IMG
START
Replace STBY-side related circuit cards
(CPU, GT, TSW, MUX, EMA) with a spare,
and check.
When a fault is not indicated, set
the faulty systems to STBY side
in advance by executing CPU
changeover. Refer to
CONTROL PROCEDURES
Chapter 2.
END
CHAPTER 5
SYSTEM
in
– 643 –
Operation Procedure for System with PIR
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
Check to see if a station-to-station connection
can be set up to identify the circuit card
responsible for the fault.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
PROCEDURES)