Lae801p Rev 20 Schematic Better -
Many "no power" issues are solved by flashing the BIOS, as the EC communicates directly with it. Where to Find the Schematic Telegram Channels: Often listed under schematics|boardviews| ARCHIVE Technical Forums: provides detailed, solved threads for this exact revision. LA-E801P document
The Rev 20 schematic includes specific notes for the PCB layout designer that were absent in previous versions:
| Parameter | Original Rev 20 | Improved Rev 20B | |-----------|----------------|------------------| | Output ripple (20MHz BW) | 210mV pk-pk | 38mV pk-pk | | Switching node overshoot | 28V | 16V | | Max load before thermal shutdown | 3.2A | 5.1A | | EMI (CISPR 22, 30-100MHz) | Fail | Pass with 6dB margin | | Efficiency at 4A | 81% | 89% | lae801p rev 20 schematic better
Rev 2.0 often corrects mislabeled capacitors and resistors found on Rev 1.0, specifically around the charging IC and CPU VRM (Voltage Regulator Module).
In conclusion, a "better" schematic like the LAE801P Rev 20 would be one that accurately, clearly, and completely represents the circuit, following standards and facilitating its use and modification. Without more specific information about the LAE801P, this provides a general framework for understanding and optimizing schematics. Many "no power" issues are solved by flashing
Before drawing anything, collect every piece of documentation you have on the LAE801P:
A type-II compensation network with selectable zero placement. The new schematic includes pads for Cc (100pF to 1nF) and Rc (1k to 10k), allowing engineers to tailor transient response. In conclusion, a "better" schematic like the LAE801P
A common flaw in the HP 15-BS architecture involves a failing RTC circuit, which stalls the laptop before it can display an image. A clear schematic lets you instantly isolate the RTC coin-cell path, its blocking diodes, and the 32.768 kHz crystal oscillator that feeds the CPU/PCH. Pairing Your Schematic with a BoardView File
While Rev 20 is objectively "better," the transition introduces specific risks: