SCH

Vostro_3900_3800_3902 13040-1.pdf

Schematic for Dell · board 13040-1 · 2.7 MB · shared in 4 Telegram posts.

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TXTAbout Vostro 3900 3800 3902 13040-1 schematic

Vostro 3900 3800 3902 13040-1 is a free Dell motherboard schematic diagram for board 13040-1. The PDF file is 2.7 MB. It was first posted on 25 Jul 2022 and is available in 4 Telegram channels.

The 13040-1 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 Dell boards.

For the same board you can also find a boardview and BIOS dumps — see all 13040-1 files.

Type
Schematics
Format
.pdf · PDF schematic
Size
2.7 MB
Brand
Dell
Board number
13040-1
First posted
25 Jul 2022
Last posted
12 Sept 2025
Sources
4

Tags

13040-1 schematic13040-1 schematic diagramDell 13040-1Dell schematic pdflaptop schematic diagramDell laptop schematic diagramschematic free download

MSGFrom the Telegram post

Vostro 3900 3800 3902 13040-1 Schematic

J1Download 13040-1 schematic from Telegram

R1How to download Vostro 3900 3800 3902 13040-1

  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 Vostro_3900_3800_3902 13040-1.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 13040-1. 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.