Motorola MTR2000 T5544 Instruction / Field Service Manual page 247

1
DESCRIPTION
The CLN1220 and DLN6458 Power Supply Modules are described in this section. These Power Supplies are used
on high power (i.e., >75 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 pro-
cedures for all modules in the station.)
The DLN6458 Power Supply Module is provided with stations delivered in Europe (after January 1, 2001). It op-
erates in conjunction with the Power Factor Correction Choke (DLN6456).
STOP
WARNING
There is one choke for each station mounted in a rack or cabinet. Each station is connected to a choke. The choke
is connected to the ac power source with the interconnect cable supplied as part of the choke FRU (DLN6456).
General Description
Motorola Inc., 2005
All Rights Reserved
Printed in U.S.A.
MODEL CLN1220 (85 to 264 Vac Input)
MODEL DLN6458 (180 to 264 Vac Input)
If a station with a CLN1220 Power Supply module is connected to a
choke, the station equipment may be damaged. Do NOT connect a sta-
tion with a CLN1220 Power Supply module to a Power Factor Correction
Choke.
The CLN1220 Power Supply Module accepts an ac input (85 to 264 Vac,
50/60 Hz) and generates three output dc voltages to power the station
modules: +5.1 Vdc, +14.2 Vdc, and +28.6 Vdc.
The DLN6458 Power Supply Module accepts an ac input (180 to 264 Vac,
50/60 Hz) and generates three output dc voltages to power the station
modules: +5.1 Vdc, +14.2 Vdc, and +28.6 Vdc.
The power supply is a high-frequency switched mode design, utilizing
Pulse Width Modulation (PWM) control, all contained in a metal heat-
sink, mounted on the left-hand side of the station. The design provides for
output over-voltage/over-current protection.
Government & Enterprise Mobility Solutions
1301 E. Algonquin Road, Schaumburg, IL 60196
POWER SUPPLY
MODULE
500 W, 50/60 Hz,
68P81096E33-D
09/30/05-UP