Motorola MTR2000 T5544 Instruction / Field Service Manual page 278

1
DESCRIPTION
The CLN1223 Power Supply Module is described in this section. This Power Supply is used on low power
(i.e.,30/40 W) stations. A general description, identification of inputs and outputs, a functional block diagram,
and functional theory of operation are provided. The information provided is sufficient to give service personnel
a functional understanding of the module, allowing maintenance and troubleshooting to the module level. (Refer
also to the Maintenance and Troubleshooting section of this manual for detailed troubleshooting procedures for
all modules in the station.)
General Description
Motorola Inc., 2005
All Rights Reserved
Printed in U.S.A.
The CLN1223 Power Supply Module accepts a dc input (10.8 to 16 Vdc)
and generates two output dc voltages to power the station modules:
+5.1 Vdc and +14.2 Vdc. The power supply is contained in a metal heat-
sink, mounted on the left-hand side of the station. The design provides for
input reverse-voltage protection, and output over-voltage/over-current
protection.
The dc input connection is made at the rear of the station via an AMP Pow-
er Lock connector. Power supply cooling is provided by natural convec-
tion via the heatsink which is coplanar with the power supply circuit
board assembly.
Government & Enterprise Mobility Solutions
1301 E. Algonquin Road, Schaumburg, IL 60196
POWER SUPPLY
MODULE; DC-Only
MODEL CLN1223
(250 W, 10.8 to 16 Vdc Input)
68P81096E52-A
09/30/05-UP