NEC NEAX 2000 IPS Installation Manual page 143

• Checking for Supply Voltage
Start
• Before connecting DC Cord, verify:
Checking power cable
and
grounding conductor
• Use a tester to verify that the input power is –48 V DC on the output of external
Testing for input power
• Connect the Power Supply Cable (Installation Cable) to Terminal Blocks on
Connecting DC power
• Turn the SW1 switches of all the PZ-PW135 cards on PIM1 to PIM7 to ON.
Turning power ON
• Verify that the ON lamp on the PZ-PW135 card lights up.
Verifying power
pilot lamp ON
• Measure the output voltage: –20 V should be observed at GND and
Testing for
output voltage
End
• Heat Run Test
Turn the SW1 switch ON. Keep it on for 5 minutes to check for no abnormal voltage. After complet-
ing the test, turn OFF the SW1 switch of the PZ-PW135 card on PIM0. Then, turn OFF the SW1
switches of all the PZ-PW135 cards.
- that the SW1 switch of the PZ-PW135 card is positioned to OFF;
- that the DC Cord is unplugged from the wall outlet.
–48 V DC Power Supply (Rectificador), or the Power Supply Cable (Installa-
tion Cable).
BASE.
Then, turn the SW1 switch of the PZ-PW135 card on PIM0 to ON last of all.
–27 V terminals of the PZ-PW135 card. See
Page 124
Voltage".
SUPPLY VOLTAGE CHECK AND HEAT RUN TEST
"Confirming Output
– 127 –
CHAPTER 2 INSTALLATION
NWA-008841-001 Rev.5.0
90ch2001.fm