Service Manual

335
6802800U74-AN
Chapter 11: Power Supply Unit
LED Name
Color
Condition
Indications
Fan indicators 1 to 3
always
Red - solid
11.2.2
PSU Switch
Table 103: Power Supply Unit Controls on page 335 describes the PSU switch and Figure 184: PSU
Front Panel on page 333 shows its position.
Table 103: Power Supply Unit Controls
Control Description
ON/OFF Switch This switch disconnects DC outputs and charging currents.
NOTICE:
When the power switch is turned off the PSU still consumes 2 mA.
If left connected to the battery for a very long time with no mains power, it could discharge the
battery.
11.2.3
PSU Connectors
Table 104: Power Supply Unit Connectors on page 335 lists and describes the PSU connectors and
Figure 184: PSU Front Panel on page 333 shows their position. For more information on PSU cabling,
see Interconnection and Internal Cabling on page 149.
Table 104: Power Supply Unit Connectors
Name of
Type To/From Comment
Temp.
Sens.
backup battery tempera-
ture sensor
ATCC Out MOLEX (2 pin) ATCC DC power supply for
ATCC
DC Out MOLEX (14 pin) 2 Base Radios and Site
Controller
Pin 1 - 3 GND Base Radio
Pin 8 +7 V
DC power supply
Connector
CAN1
RJ45
Site Controller
CAN Bus interface
CAN2
RJ45
Duplexer/ Post Filter/
ATCC/ Site Controller/
CAN Bus interface
Terminator
DC In
Phoenix (2 pin)
Junction Panel
DC input and backup
Battery
battery charging
AC In
IEC (high temperature
Junction Panel
AC input
version, male)
Battery
MOLEX (2 pin)
Junction Panel
Connection with the