Turning Power On; Turning Power Off - NEC NEAX 2000 IVS2 Maintenance Manual

Turning Power ON

1. When the operating power is being supplied to the PZ-PW121/PZ-PW126 card, do not plug/
unplug this circuit card into/from its mounting slot.
2. When the system is configured with two or more PIMs, the BUS cable is providing gang
control for the PZ-PW121/PZ-PW126 card of PIM0 and other PIMs. Therefore, if the power
of PIM0 is off, no power is supplied to the whole system even when the power switch(es) of
other PIMs are left on.
NOTE: The battery charging is continuing even under these circumstances.
3. Do not turn off the PZ-PW121/PZ-PW126 card on PIM1 to PIM7 when the system is
operating.
(1) Check the switch position of each PZ-PW121/PZ-PW126 card before turning power on.
• Make sure that the AC120V/240V selector switch is positioned to appropriate voltage for
each country (AC120V or AC240V).
NOTE: PZ-PW126 does not have this switch.
• Make sure that the battery mode selector switch is positioned for a Sealed or Vented
battery, as shown below.
(2) Turn the SW1 switches of all the PZ-PW121/PZ-PW126 cards to ON. First, turn ON PIM1
to PIM7. Then, turn ON PIM0 last of all.

Turning Power OFF

(1) Before turning power OFF; make sure that all line/trunk cards are not operating with no busy
lamps indication.
(2) Turn the SW1 switches of all the PZ-PW121/PZ-PW126 cards to OFF. First, turn OFF PIM0.
Then, turn OFF PIM1 to PIM7.
2
NEAX2000 IVS Maintenance Manual
ND-70926 (E), Issue 3.0
CAUTION
SW
100V/120V 240V
SW101
OFF
1 : Not used
2 : ON (SEAL/FLOAT 2)
OFF (OPEN/FLOAT 1)
ON
CHAPTER 2 TROUBLESHOOTING
Precautions
Page 63