Schematic in PDF for a Biostar TB85 desktop motherboard, board number IB85C-AHS version 6.0, in a small 680 KB RAR archive. The name implies an Intel B85 chipset, and the board numbering suggests ECS as the actual manufacturer. Use the diagram to follow standby and main power rails, check the VRM circuit, and locate parts involved in no-power or no-POST faults. Verify that the PCB carries the IB85C-AHS marking with version 6.0 before relying on part references and values.
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 (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 31 Jul 2022 | 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.