COMPAQ CQ40 STANDBY SUPPLY DESCRIPTION

If CQ40 laptop has a good B+ main supply which necessary for the system to turn on always supplies(3VL and 5VL). Always supply is to maintain the system in a ready state before pressing the power button.TPS51125 is used in Continue Reading

HP CQ40 BATTERY CHARGING DISCRIPTION

Laptop battery is charged by an external power. Which is usually output dc voltage and provide power to system and charge battery simultaneously. When battery fully charged continue supply to the system through the adaptor and cut battery charging.Every laptop Continue Reading