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Cq40 Basic Laptop Standby Supply Description

CQ40 laptop Standby supply 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 CQ40 for laptop standby supply regulation.Note: Check B+ and Charging supply … Read more

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A laptop battery is charged by an external power. Which is usually output dc voltage and provides 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 has its type of configured battery charging circuit. The charging process is managed by multi-controllers like:
Charging ic
• KBC I/O controller (for battery temperature, level, enable and adaptor detection)
• Battery internal ROM chip or external ROM u28 (battery must be connected)
First of all system supply B+(main supply source) is available for system startup

Note: for more on B+ Supply Read Article 

dc jack
ADP_ID or Adaptor Id pin Function: (fault cause: unknown adaptor or not battery charging)


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True best hp adaptor introduction for hp CQ40 B+ Supply Section

Cq40 is commonly using and very often find a laptop and its circuit is very basic similarities with other hp models. So I explained it’s main power source  B+ Supply section with hp adaptor introduction First. it is Operate with hp’s 3 pin adapter architecture. It is very often used by other companies like Dell, … Read more

press power button

Remarkable KB926QF functions Before press Power Button

Before the press power button any laptop has an embedded controller that controlled the trigger. ENE Keyboard Controller series is a highly integrated embedded controller (EC)  for laptop platform. It appeals for low power consumption and best-in-class performance to satisfy customers’ demand. ENE Keyboard Controller Functions The system support functions include 8051 MCU, LPC interface, … Read more

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Basic Laptop Power States (S0-S5) For Skillful in Repairs

Windows-based PCs and laptops typically have six sleeping states ranging from “power on” to fully functional laptops. laptop Power states are represented by as follows. S0 (Fully functional with data execution ) S1 (CPU stop working but all powers is active) S2 (This state is not generally found in laptops) S3 (Only Ram has power … Read more