RAR archive of 4.25 MB for the Wistron EGOYA-BALEN project, board number 11276-2 with the code 4ST04. The name does not say what is inside, so it may be a schematic, boardview or both; extract it to confirm. Wistron, which builds many Dell laptops, uses this numeric board pattern. Service documents of this kind help trace power sequencing, identify components and find test points when repairing no-power, no-boot or charging faults. Check the 11276-2 number on the board itself, since the dash suffix marks a specific variant.
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 (6)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 31 Jan 2021 | Open file on RM Schematics |
| @pepeelectronica | 25 Apr 2022 | Open file on RM Schematics |
| @cyberlanelectonik | 15 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 25 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 2 Aug 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.