Replacing The Site Controller Lithium Battery; Figure 171: Site Controller - Captive Screws - Motorola MTS LiTE Installation, Configuration And Basic Service Manual

8.5.3

Replacing the Site Controller Lithium Battery

CAUTION: Danger of explosion if battery is replaced incorrectly. Replace battery only with the
same or equivalent type recommended by manufacturer. Dispose of used batteries according to
the manufacturers instructions.
Procedure:
1 Examine the contents of the flash filling system using the monitor command SC> attrib.
Record the file attributes for each of the files.
2 WARNING: Shock Hazard. The MTS contains dangerous voltages which can cause
electrical shock or damage to equipment. Turn off the MTS and remove the power
cabling before servicing this equipment. Make sure that all power is off to prevent
accidental contact with high energy and injury to personnel.
Switch the MTS Power Supply Unit OFF.
IMPORTANT: If two PSUs are present, switch off the supplying the Site Controller being
replaced. Do not power down the MTS. In configuration with non-redundant power
connection, the MTS Power Supply Unit can be switched off as an alternative to
removing the cables.
3 Wear an ESD strap and connect its cable to a verified good ground. This strap must be worn to
prevent ESD damage to any components.
4 Tag and disconnect any cabling from the Site Controller.
5 Loosen the two M4X10 captive screws securing the Site Controller to the chassis.

Figure 171: Site Controller - Captive Screws

6 Use the handle, and gently slide the Site Controller from the slot, removing it from the chassis.
IMPORTANT: There are cables connected at the rear of the Site Controller. Slide out the
Site Controller carefully, tag and disconnect ribbon cables at the rear.
7 Remove the Site Controller cover. Unscrew 19 screws securing the cover and slide it off gently
to avoid damage to components installed on the board (the cover can harm the springs on the
RJ45 connectors (front side connectors), when the cover has been slid nearly completely off).
8 Remove the old battery from the socket on the board.
SITE CONTROLLER
FRONT VIEW
REAR VIEW
SITE CONTROLLER
Power
Power
BR1
BR3
BR2 BR4
CAN E1
Service Exp. Cab.
Red. Red.
In Out
Active
Mode
GPS
BTS Alarm
Reset
GPS
6802800U74-AN
Chapter 8: Site Controller
309