APPLE 820-3057 051-8933 LIO K21 (PCB LIO K21 EVT) REV 4.1.0.pdf

TXTAbout APPLE 820-3057 051-8933 LIO K21 (PCB LIO K21 EVT) REV 4.1.0 schematic

APPLE 820-3057 051-8933 LIO K21 (PCB LIO K21 EVT) REV 4.1.0 is a free Apple K21 motherboard schematic diagram for board 820-3057. The PDF file is 377 KB and covers board revision 4.1. It was first posted on 15 Jan 2021 and is available in 2 Telegram channels.

The 820-3057 schematic shows the complete circuit of the motherboard: the always-on 3VALW / 5VALW rails, the battery charger, CPU core and memory power, USB, display, audio and the BIOS/EC section. Use it to trace no-power, no-display, short-circuit and not-charging faults on Apple boards.

For the same board you can also find a boardview — see all 820-3057 files.

J1Download 820-3057 schematic from Telegram

R1How to download APPLE 820-3057 051-8933 LIO K21 (PCB LIO K21 EVT) REV 4.1.0

1. Press Download in Telegram. The post opens in the Telegram app, or on a t.me preview page — choose “View in Telegram”.
2. You don’t need to join the channel. Tap the file APPLE 820-3057 051-8933 LIO K21 (PCB LIO K21 EVT) REV 4.1.0.pdf to download it.
3. Open it with Any PDF reader or SumatraPDF.

If a post was deleted, try another source above or search for 820-3057. Step-by-step help: downloading from Telegram.

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