boardrepair.me · Schematic reference
MacBook Air A2681
Files are provided for diagnostic and repair purposes only. Use
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Download files
| File | Type | Access |
|---|---|---|
| 📄 a2681_schematic_1.pdf | PDF Schematic | Open in browser / download |
BoardView files (.brd) — open with OpenBoardView (free, Windows/Linux) for interactive component location. PDF schematics open in any PDF viewer.
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.