Schematic Redmi 13c Extra Quality < Genuine × Strategy >

The Redmi 13C uses the MediaTek MT6769Z (Helio G85) chipset. The block diagram in this schematic set is perfectly mapped. It provides a clear roadmap of the power flow—from the USB-C port through the charging IC (usually a MediaTek PMIC combo) to the main CPU. This saved me hours on a recent water damage repair where I needed to trace the V_BOOST line quickly.

The Redmi 13C is prone to "LCD Black" after a heavy drop. Using the schematic, locate the backlight driver (usually U400). The extra quality PDF shows that pin 3 of U400 expects LCM_BL_EN (2.8V). If missing, you can jumper a 1K resistor from VIO18 to this pin to force the backlight on temporarily. schematic redmi 13c extra quality

The MediaTek MT6631 handles Wi-Fi/Bluetooth/GPS. The Redmi 13C uses the MediaTek MT6769Z (Helio G85) chipset