User's Manual

CHAPTER 4 NDA-24300
Page 276
Issue 1
UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE
Note:
The system changeover of TSW card can be executed 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
goes OFF.
• TSW ACT lamp on the new card
remains OFF.
System Changeover
• Replaced TSW: STBY to ACT
• Mate TSW: ACT to STBY
Check the following lamp indications
on the Speech Path block to which the
new TSW 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 en-
sure that they are all OFF:
• TSW ACT (TSW cards)
• OPE/MB (DLKC card)
• MUX ACT (MUX cards)
END
B
Set the MB key on the new card DOWN.
Flip the MBR key on the active GT card. Confirm the
new TSW card functions normally.
Set the TSW MBR key on the new card DOWN.
MBR (on the active GT card)
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