SCH

QUANTA_GD1B_MBX-177A_-_REV_2A.pdf

Schematic for Quanta GD1B / MBX-177A · 1.6 MB · shared in 3 Telegram posts.

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TXTAbout QUANTA GD1B MBX-177A - REV 2A schematic

QUANTA GD1B MBX-177A - REV 2A is a free Quanta GD1B / MBX-177A motherboard schematic diagram. The PDF file is 1.6 MB and covers board revision 2A. It was first posted on 17 Mar 2023 and is available in 3 Telegram channels.

The GD1B 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 laptop boards.

Type
Schematics
Format
.pdf · PDF schematic
Size
1.6 MB
Brand
Quanta
Model
GD1B, MBX-177A
Revision
2A
First posted
17 Mar 2023
Last posted
12 Sept 2025
Sources
3

Tags

Quanta GD1B schematicQuanta GD1B motherboardQuanta GD1B circuit diagramQuanta schematic pdflaptop schematic diagramQuanta laptop schematic diagramschematic free download

MSGFrom the Telegram post

QUANTA GD1B MBX-177A - REV 2A Schematic

J1Download GD1B schematic from Telegram

R1How to download QUANTA GD1B MBX-177A - REV 2A

  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 QUANTA_GD1B_MBX-177A_-_REV_2A.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 GD1B. Step-by-step help: downloading from Telegram.

.PDFWhat is a .pdf file and how to open it?

PDF schematic. A circuit diagram of the motherboard, page by page.

Open with:

  • Any PDF reader
  • SumatraPDF
  • Your web browser

Tip: Press Ctrl+F and search for a part (PU1, PQ3) or a net name (+3VALW, PWR_EN) to jump straight to it.