NEC Univerge SV8500 Operation And Maintenance Manual page 149

STEP 1 Make sure which TSW card is currently placed in ACT mode.
When TSW is active, TSW ACT lamp on the TSW card lights green. When the TSW ACT lamp
is off, the TSW card is in STBY mode.
TSW:ACT
The changeover of TSW can be performed only when the mate TSW is in STBY mode. Do
WARNING
not attempt the changeover, if the mate TSW is closed.
STEP 2 Set TSW MBR key upward on the TSW-ACT-TSW card.
STEP 3 Make sure that the TSW ACT lamp starts to light green on the mate TSW card. A few seconds
will be required before this happens.
• active TSW: TSW ACT and MUX ACT lamps go off
• mate TSW: TSW ACT and MUX ACT lamps light green
Figure 2-13 When TSW #0 is ACT side (1-IMG)
TSW ACT TSW ACT
MUX ACT MUX ACT
PLO ACT PLO ACT
MB MB
TSW MBR TSW MBR
PLO MBR PLO MBR
slot13 slot14
CHAPTER 2
TSW:STBY
Meaning
– 102 –
Operations of SV8500 Server
ON
OFF