Power Supply Unit Circuit Operation - Panasonic KX-TDA0103XJ Service Manual

KX-TDA0103XJ / KX-TDA0104XJ / KX-TDA0108XJ / KX-TDA0103X / KX-TDA0104X / KX-TDA0108X

7 POWER SUPPLY UNIT CIRCUIT OPERATION

The power unit supplies power to the various cards of the KX-TDA100 and KX-TDA200.
The functions of the power unit are listed below.
Function
DC voltage generation function
Backup batteries charge function
AC cutoff detection function
DC abnormality detection function
Overheating detection function
Two kinds of power supply unit are provided as an option depending on the card structure and the terminal structure for KX-
TDA100 and KX-TDA200.
Available combinations of the main unit and the power supply are as follows.
This function generates four DC voltages (+40V, +30V, +15VPT, and +15V) from the AC power supply and
supplies them to the system.
This function charges backup batteries connected to the power unit by using +40V output.
This function detects any cutoff of AC power supply and outputs an AC alarm signal to the MPR card.
This function detects any abnormality in the DC voltage and outputs a DC alarm signal to the MPR card.
This function detects any overheating of the power unit and shuts down the power supply in order to
preserve the safety of the system.
PSU-S
(KX-TDA0108XJ/X)
KX-TDA100 Available
KX-TDA200 -
Description
PSU-M PSU-L
(KX-TDA0104XJ/X) (KX-TDA0103XJ/X)
Available
Available Available
18
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