Panasonic KX-TG2220BXB Service Manual

Contents

Panasonic KX-TG2220BXB Service Manual Manual pdf 48 page image

16.3. Power Supply CircuitFunction:The power supply voltage from AC adaptor is converted to the desired voltage of each block.Circuit Operation:This unit supplies the voltage to each block as shown below.Note:As for , see CIRCUIT BOARD (BASE UNIT) (P.80).16.3.1. Charge CircuitThe voltage from the AC is supplied to the main charge circuits. Normal charge (220 mA) of maximum 9-hours is started soon afterthe Handset is placed on the base unit. Then it changes to trickle charge (15 mA on the average) to prevent from overcharging.Normal charge : Q150 is ONTrickle charge : Q150 is OFF48KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS