SCH

HP COMPAQ A900 - COMPAL LA-3981P - REV 0.2.pdf

Schematic for HP A900 · board LA-3981P · 1.4 MB · shared in 2 Telegram posts.

TXTAbout HP COMPAQ A900 - COMPAL LA-3981P - REV 0.2 schematic

HP COMPAQ A900 - COMPAL LA-3981P - REV 0.2 is a free HP A900 motherboard schematic diagram for board LA-3981P. The PDF file is 1.4 MB and covers board revision 0.2. It was first posted on 9 Mar 2023 and is available in 2 Telegram channels.

The LA-3981P 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 HP boards.

For the same board you can also find BIOS dumps and board packs — see all LA-3981P files.

Type
Schematics
Format
.pdf · PDF schematic
Size
1.4 MB
Brand
HP
Board number
LA-3981P
Model
A900
Revision
0.2
First posted
9 Mar 2023
Last posted
27 Sept 2023
Sources
2

Tags

MSGFrom the Telegram post

HP COMPAQ A900 - COMPAL LA-3981P - REV 0.2 Schematic

J1Download LA-3981P schematic from Telegram

R1How to download HP COMPAQ A900 - COMPAL LA-3981P - REV 0.2

  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 HP COMPAQ A900 - COMPAL LA-3981P - REV 0.2.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 LA-3981P. 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.