PDF schematic for a Radeon HD 4870 graphics card, board code V803-10, in a 2.58 MB RAR archive. The V-prefixed code matches the style MSI uses for its graphics boards, though the name does not state the brand. A technician uses the diagram to trace the core and memory power stages, locate shorts on the 12 V input, and check clock and reset circuits. Confirm that the PCB carries the same V803 marking before relying on component designators, since HD 4870 cards were produced in several layouts.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
All sources (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 14 Jul 2022 | Open file on RM Schematics |
| @cyberlanelectonik | 16 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.