boardrepair.me · Schematic reference
MacBook Air A2681
Schematics and BoardView files for this board are not hosted here. See the sourcing card below for legal references, and our editorial standards for context.
Board overview
MacBook Air 13" M2 (2022), board number 820-02549. Apple M2 SoC (2nd generation 5nm TSMC). Second-generation T6002 BMIC (Battery Management IC), replacing the T6022 of the M1 A2337. Uses LPDDR5 memory (vs LPDDR4X on A2337) offering higher bandwidth. 2 × CD3215 USB-C controllers. MagSafe 3 connector in addition to USB-C charging.
CPU / GPU
Apple M2 (5nm TSMC gen 2)
PMU / Charger
T6002 BMIC
Connectivity
CD3215 × 2 + MagSafe 3
Schematic ref.
820-02549
Power rails reference
Rails listed in measurement priority order — start at the top. Each rail must be present before the next can be generated.
| Rail name | Voltage | Notes & fault hints |
|---|---|---|
PPBUS_G3H |
8.6 V | Always-on bus from battery or MagSafe 3 / USB-C via T6002. First measurement point. Missing = T6002 or battery fault. |
PP3V3_S5 |
3.3 V | Standby 3.3 V. T6002 generated. Present when machine is off. Absent = T6002 not functional. |
PP1V8_S5 |
1.8 V | Standby 1.8 V. Standby logic power for USB-C and power sequencing. |
PP5V_S5 |
5.0 V | Standby 5 V. Always-on USB-C VCONN and standby peripheral power. |
PP0V9_SOC |
0.9 V | M2 SoC core voltage. Requires full S0 wake. Generated by PMIC inside M2 package. |
PP1V2_LPDDR5 |
1.2 V | LPDDR5 memory bus voltage (higher than LPDDR4X 1.1 V on A2337). Missing = memory fault or PMU sequencing failure. |
PP3V3_S0 |
3.3 V | Active 3.3 V. Gated by T6002 S0 enable. PCIe, NVMe, peripheral logic. |
PP1V8_S0 |
1.8 V | Active 1.8 V. Display controller, I2C buses, audio codec. |
Common failure zones
Most likely failures first. Each entry gives a symptom and the immediate diagnostic action.
No charging via USB-C
CD3215 USB-C controller on affected port. Measure VBUS arrival. Check CC communication. Very common on A2681 after USB-C port stress.
No charging via MagSafe 3
MagSafe 3 port goes through separate path to T6002. Check MagSafe connector pins for corrosion. Measure PPBUS_G3H appearance with adapter only.
No power — dead after liquid
T6002 BMIC region is most vulnerable. Check PPBUS_G3H generation. Inspect under T6002 for corrosion. Clean thoroughly before measuring.
Power but no display
Display power rails (PPVDD_DISP, PP1V8_S0 to panel). Check display cable. Backlight controller area.
Intermittent power loss under load
PPBUS_G3H instability under M2 load. Check T6002 output capacitors. Measure ripple with oscilloscope under CPU stress.