Service Manual

327
6802800U74-AN
Chapter 10: Base Radio
Name of
Connec-
tor
Type To/From Comment
Pin 5, 8 -
14
not
used
Table 101: Base Radio – Service Cable Pinouts
RJ45 PIN D-SUB 9 FEMALE PIN Description
1
2
3
4 3 Rx
5 5 GND
6
7 2 Tx
8 5 GND
9
10.4
Replacing the Base Radio
For a list of available Field Replaceable Units (FRUs), see Field Replaceable Units (FRUs) on page
446.
Process:
1 Remove the Base Radio module, see Removing the Base Radio on page 328.
2 Reinstall the new Base Radio, see Reinstalling the Base Radio on page 328.
3 Perform the procedures from the Configuring and Verifying the Base Radio on page 234 section.
4 If Encryption and/or Authentication is used, see MTS LiTE, MTS 2, and MTS 4 Restoration
manual (for DIPS/DIPC/X Core systems) or Service Manual (DIPM system) for details on
loading Ki's into MTS.
10.4.1
Electrostatic Discharge Precaution
The Base Radio circuitry contains many CMOS and other electrostatic discharge sensitive devices.
Take precautionary measures to prevent damage of Base Radio modules by static discharge when
servicing the equipment.
Observe the following additional precautions:
• Wear a wrist strap (Motorola Part No. 4280385A59 or equivalent) at all times when servicing the
Base Radio to minimize static build up.
• A jack is provided at top left of module cage marked with the ground symbol.
• Keep spare modules in factory packaging for transporting. When shipping modules, always pack in
original packaging.
For more information, see Static Precautions and ESD Strap on page 460.