: Locate the USB-C connector (sub-board) and the charging IC (PMIC) on the mainboard. Problems here often cause "not charging" or "slow charging" issues.
BATTERY CONNECTOR J2201 Pin 1: VBAT (main battery +) → To PM660 LDI_BAT Pin 2: VBAT_SNS → To PM660 BAT_SENSE Pin 3: BAT_THERM → 100k NTC to GND Pin 4: BAT_ID → 10k pull-up to 1V8 Pin 5: GND nokia 8.1 schematic diagram
Pin 1: VDD_2.8 (2.8 Volts). Pin 2: SDA_I2C (Data line). Pin 3: SCL_I2C (Clock line). Pin 4: INT (Interrupt to CPU). Pin 5: GND. : Locate the USB-C connector (sub-board) and the
Elias pulled up the Nokia 8.1 schematic diagram on his dual-monitor setup. The PDF was a dizzying labyrinth of lines, labels, and component identifiers. To the untrained eye, it was a mess of spiderwebs. To Elias, it was a map of a city. Pin 2: SDA_I2C (Data line)