The LA-E791P Rev 2.0 schematic is a critical technical document used for repairing HP 15-BS series and HP 250 G6 laptops. It details the internal hardware architecture for the CSL50/CSL52 motherboard, primarily built around the Intel Sky Lake-U platform. Technical Specifications Motherboard Model: CSL50 / CSL52 (Compal LA-E791P)
GPU Integration: Support for UMA (Integrated) graphics or discrete AMD R17M GPUs with dedicated DDR3L VRAM. lae791p rev 20 schematic diagram verified
Once you have a trusted LAE791P REV 20 schematic diagram verified, preserve its integrity: The LA-E791P Rev 2
4. Power‑Supply Section • LDO output decoupling: 1 µF + 0.1 µF on each pin – OK. • Missing bulk cap on 5 V rail – added C‑BULK1 (10 µF, X5R).Remember: Trust, but verify. Even a “verified” schematic should be spot-checked against your specific board. Use the methods outlined here—resistance checks, low-voltage stimulus, and output measurements—to certify your copy. How to Archive and Annotate Your Verified Schematic
You can paste this into a Word/Google doc, fill in the findings, and attach it to your change‑request.
| Item | What to Confirm | Typical “green flag” |
|------|----------------|----------------------|
| Title Block | Part number, revision, date, author, and approval signatures are present and up‑to‑date. | LAE791P Rev 20, 2026‑04‑12, John Doe, Approved |
| Revision History | Shows a clear progression from earlier revisions and lists what changed. | Entry for Rev 20 (e.g., “Added test point TP‑CLK, moved C‑23 to 10 µF”). |
| Document Control | Filename, checksum, and CAD version are recorded. | LAE791P_rev20.sch – checksum: 0x5A3E1B8C. |
| Block Diagram (if present) | High‑level functional flow matches the detailed schematic. | Power → Regulator → MCU → Peripherals. |
| Bill of Materials (BOM) | All components are listed, with reference designators, values, tolerances, and supplier parts. | R15 10 kΩ 1 % Yageo RC1206JR‑10KR. |
The "REV 20" designation indicates a mature revision—likely after several rounds of bug fixes, component optimizations, and compliance updates. A verified schematic for this revision ensures that you are working with the exact component values, trace routing, and netlist as the physical board.