boardrepair.me · Schematic reference
MacBook Air A2337
Files are provided for diagnostic and repair purposes only. Use
/schematic 820-02134 in the Telegram bot to download automatically.
Download files
| File | Type | Access |
|---|---|---|
| 🗜 a2337_manual.zip | Service Manual (ZIP) | 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" M1 (2020–2022). First Apple Silicon laptop, replacing Intel architecture with the M1 SoC. The A2337 uses a unified memory architecture with no discrete DRAM — all memory is on the M1 die. The schematic reference is 820-02134.
CPU / GPU
Apple M1 (5nm TSMC)
PMU / Charger
T6022 BMIC
Connectivity
CD3215 × 2
Schematic ref.
820-02134
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 typ | Always-on bus rail from battery or adapter via T6022. First rail to measure. |
PP3V3_S5 |
3.3 V | Standby 3.3 V generated from PPBUS_G3H. Present when machine is off. |
PP1V8_S5 |
1.8 V | Standby 1.8 V rail. Enable signal from T6022 sequencing. |
PP5V_S5 |
5.0 V | Standby 5 V for USB-C always-on power. |
PP0V9_SOC |
0.9 V | M1 SoC core voltage. Requires full S0 wake. Generated by PMIC. |
PP1V2_SOC |
1.2 V | M1 I/O and interconnect rail. |
PP1V1_LPDDR4 |
1.1 V | LPDDR4X memory VDD. Missing = memory bus fault. |
PP3V3_S0 |
3.3 V | Active 3.3 V. Gated behind S0 enable from T6022. |
Common failure zones
Most likely failures first. Each entry gives a symptom and the immediate diagnostic action.
USB-C not charging (one side)
CD3215 controller on that port. Check VBUS enable, CC logic. Measure VCONN.
No power at all
Measure PPBUS_G3H first. If missing: T6022 BMIC or battery not present. Check SMC_BC_ACOK equivalent signal.
Boots but no display
Backlight controller (TPS65132 region) or display connector. Check PP1V8_S0 to panel.
Intermittent power loss
PPBUS_G3H instability — bad solder joint on T6022 or coil. Measure under load.
Liquid damage — no power
T6022 area most vulnerable. Also check corrosion under CD3215 and around SMC equivalent pads.