SCH

GY552 NM-C991 PDF .pdf

Schematic for Compal GY552 · board NM-C991 · 2.3 MB · shared in 1 Telegram post.

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TXTAbout GY552 NM-C991 PDF schematic

GY552 NM-C991 PDF is a free Compal GY552 motherboard schematic diagram for board NM-C991. The PDF file is 2.3 MB. It was first posted on 1 Sept 2025 and is available in 1 Telegram channel.

The NM-C991 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.

For the same board you can also find a boardview — see all NM-C991 files.

Type
Schematics
Format
.pdf · PDF schematic
Size
2.3 MB
Brand
Compal
Board number
NM-C991
Model
GY552
First posted
1 Sept 2025
Last posted
1 Sept 2025
Sources
1

Tags

NM-C991 schematicNM-C991 schematic diagramCompal NM-C991Compal GY552 schematicCompal GY552 motherboardCompal GY552 circuit diagramCompal schematic pdflaptop schematic diagramCompal laptop schematic diagramschematic free download

MSGFrom the Telegram post

GY552 NM-C991 Schematics

J1Download NM-C991 schematic from Telegram

R1How to download GY552 NM-C991 PDF

  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 GY552 NM-C991 PDF .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 NM-C991. 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.