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HP CQ40 no power and power discription



HP CQ40 Main Power Supply B+ Description




Hp CQ40 Supply With Hp Adaptor Introduction


Cq40 is commonly use and very often find laptop and its circuit is very basic similarities with other hp models. So I explained it Charging section First. it is charging with hp’s 3 pin adaptor architecture. It is very often in others companies like dell, lenovo etc. it protect system with external over voltage and surge. When there is damage in circuit it stop output from adaptor. ID signal is use to operate charging Enable function.

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