Read Panasonic KX-TDA0103X / KX-TDA0103XJ / KX-TDA0104X / KX-TDA0104XJ / ETX1KM753MB / ETX1KM752MB Service Manual online
7
KX-TDA0103X/KX-TDA0103XJ/KX-TDA0104X/KX-TDA0104XJ
4 Technical Descriptions
4.1.
Power Supply Unit Circuit Operation
The power unit supplies power to the various cards of the KX-TDA100 and KX-TDA200 and KX-TDA600.
The functions of the power unit are listed below.
The functions of the power unit are listed below.
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 and KX-TDA600.
TDA100 and KX-TDA200 and KX-TDA600.
4.2.
PSU (KX-TDA0103X/KX-TDA0103XJ)
4.2.1.
Block Diagram
Function
Description
DC voltage generation function
This function generates four DC voltages (+41V, +30V, +15VPT, and +15V) from the AC power supply and
supplies them to the system.
supplies them to the system.
AC cutoff detection function
This function detects any cutoff of AC power supply and outputs an AC alarm signal to the MPR card.
DC abnormality detection function
This function detects any abnormality in the DC voltage and outputs a DC alarm signal to the MPR card.
Overheating detection function
This function detects any overheating of the power unit and shuts down the power supply in order to pre-
serve the safety of the system.
serve the safety of the system.
Click on the first or last page to see other KX-TDA0103X / KX-TDA0103XJ / KX-TDA0104X / KX-TDA0104XJ / ETX1KM753MB / ETX1KM752MB service manuals if exist.