NEC UNIVERGE NEAX 2000 IPS, Maintenance Manual

Page: 132 / 262

CHAPTER 2 TROUBLESHOOTING
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NWA-008847-001 Rev.3.0
a6ch2001.fm
Turning Power ON
(1) Check the switch position of each PZ-PW121/PZ-PW126 card before turning power on.
• Make sure that the AC120 V/240 V selector switch is positioned to appropriate voltage for each
country (AC120 V or AC240 V).
NOTE: PZ-PW126 card does not have this switch.
• Make sure that the battery mode selector switch is positioned as shown below to match the kind of
battery being used:
(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.
CAUTION
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 con-
trol 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 switches of other
PIMs are left on. Note, however, that the battery charging is continuing even under these cir-
cumstances.
3. Do not turn off the PZ-PW121/PZ-PW126 card on PIM1 to PIM7 when the system is operat-
ing.
SW2
240 V 100 V/120 V
ON
OFF
12
SW101
1 : Not used
2 : ON (SEAL/FLOAT2)
OFF (OPEN/FLOAT1)
PRECAUTIONS