NEC Univerge SV8500 Operation And Maintenance Manual page 616

[Start]
STEP 1 TSW card to be replaced is in STBY mode?
Check TSW ACT lamp on the TSW card. When the lamp is off, the card is in STBY mode.
YES: Proceed to STEP 3.
NO: Changeover the ACT/STBY of speech path by using CMOD. Proceed to STEP 2.
STEP 2 Confirm the mate TSW has been placed in ACT mode.
When TSW ACT lamp lights green on the mate TSW card, changeover is successful.
STEP 3 Turn ON (upward) MBR key on the TSW to be replaced.
• TSW ACT lamp lights red on the all TSW cards that are placed in STBY mode.
STEP 4 Turn ON (upward) MB key on the TSW to be replaced.
• SYNC lamp goes OFF on all MUX cards that are under the TSW card whose MB key is set ON.
STEP 5 Extract the TSW card to be replaced.
STEP 6 Set the keys on the new TSW card, referring to the card replaced.
STEP 7 Turn ON (upward) MBR and MB keys on the new TSW card.
STEP 8 Insert the new TSW card.
• TSW ACT lamp light red on the new TSW card.
STEP 9 Turn OFF (downward) MB key on the new TSW card.
• TSW ACT lights red
• M0SY/M1SY/M2SY/M3SY lamps light green
• SYNC lamps light green on all MUX cards that are under the new TSW card.
STEP 10 Turn OFF (downward) MBR key on the new card.
• TSW ACT lamp goes off on all TSW cards that are placed in STBY mode.
STEP 11 Change over the ACT/STBY of speech path by using CMOD command.
STEP 12 Make sure the following:
[ACT side]
• TSW ACT lights green (TSW card)
• OPE/MB lights green (DLKC card)
CHAPTER 5 Operation Procedure for System with PIR
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