Filter
Top Products
CHAPTER 4 NDA-24300
Page 278
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
Note:
The changeover of speech path system can be performed also by using the CMOD command. For
details, refer to Chapter 8, Maintenance Commands.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
• TSW ACT lamp on the new card is red.
• TSW ACT lamp on the new card goes
OFF.
System Changeover
• Replaced DLKC: STBY to ACT
• Mate DLKC: ACT to STBY
Check the following lamp indications on the
Speech Path block to which the new DLKC
card belongs and ensure that they are all
steady-green:
• TSW ACT (TSW cards)
• OPE/MB (DLKC card)
• MUX ACT (MUX cards)
Check the following lamp indications on the
mate Speech Path block and ensure that they
are all OFF:
• TSW ACT (TSW cards)
• OPE/MB (DLKC card)
• MUX ACT (MUX cards)
Refer to Figure 4-16 and Figure 4-17.
END
On the new DLKC card, set the MB key DOWN.
A
Extract the DLKC card to be replaced
from the TSWM.
Flip MBR key on the active GT card. Confirm the
new DLKC card functions normally.
On the new DLKC card, set the MB switch UP.
Insert the new DLKC card into the TSWM.
MBR (on the active GT card)
1 2