1145B2 power supply
Issue 3 January 2008 117
2. Plug the cord into the outlet. This powers up the power supply.
3. Check AC operation of the 1145B2 Power Supply by monitoring the LEDs:
PASS : Green and yellow LEDs at the front of the unit should be lit together. See
Table20: Power supply LEDs on page 116. After the battery reaches full charge (maximum
of 20 hours), the yellow LED should go out.
FAIL: If either green or yellow LED is not lit after powering up, check the connections. Test
the AC outlet. If power is available and the AC power cord and connections are good,
replace the power unit.
4. Disconnect the AC plug on the power supply; this activates the DC supply.
5. Check DC (battery back-up) operation of the 1145B2 Power Supply by monitoring the LEDs:
PASS : The red and green LEDs should be lit together. See Table20: Power supply
LEDs on page 116.
FAIL: If either green or red LED is not lit after disconnecting AC power, check the
connections. If the connections are good, replace the power unit or batteries.
6. Reconnect AC power to the power supply.
Wiring the 1146B2 Power Distribution Unit Wire endpoints to the 1146B2 while power from the 1145B2 is on. A red LED lights if its
associated circuit is connected to shorted wiring or to a shorted telephone. To wire the 1146B2
Power Distribution Unit:
1. Install cross-connect jumpers to wire from the unit (the label shows polarity) to Pins 7 and 8
of the appropriate information outlet. Route the wires through the clip provided on the unit. If
a red LED is on, see Resetting LEDs on power distribution unit on page 118. See
Figure 54: Typical wiring to a telephone on page 118.
2. Mark lead destinations on the label next to each connector. Also mark the Unit Number and
Connectivity information on the label.