A schematic diagram is indispensable for troubleshooting specific circuit failures that a simple visual inspection cannot catch. Common use cases include:

How power and data travel from one point to another. Voltage Rails: Identification of voltage levels ( vbatv sub b a t end-sub vsysv sub s y s end-sub

Using the schematic, you can systematically diagnose the most common hardware failures found in the Redmi Note 10 Pro: No Display / Black Screen (With Vibration)

What is the phone showing? (e.g., dead, no charging, no touch)

Open the schematic in a PDF reader like Adobe Acrobat or Foxit Reader. The first few pages typically contain a block diagram showing the device's main components, such as the AP (Application Processor), PMIC (Power Management IC), memory, and RF (Radio Frequency) section.

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Because this device features an AMOLED screen, it does not use a traditional LED backlight driver. Instead, it relies on specific display bias voltages:

Cross-reference that component on the boardview and schematic to determine if it can be safely removed or must be replaced. How to Read the PDF Schematic Document