The LA-G851P (EDB10) is a motherboard commonly used in the Dell Chromebook 3100 laptop. Finding a full, open-source technical article or schematic for this specific board can be difficult as they are proprietary, but you can find resources for repair and technical documentation through the following links:
Schematic Files: You can often find PDF copies of the schematic on sites like IndiaFix or Google Drive, though some may require a login or subscription.
Board Components: The board typically supports Intel Celeron processors (like the N4020) and is available as a replacement part on marketplaces like AliExpress and eBay.
Repair Documentation: For broader technical guides, NotebookSchematics provides boardviews and diagrams for similar Dell Chromebook models which share architectural similarities.
motherboard is the core PCB for the Dell Chromebook 3100 . Finding a direct, open-source schematic for this specific board can be difficult because Chromebook designs are often proprietary and limited to authorized repair centers.
Below is the technical context and typical path for sourcing this schematic for repair purposes: 1. Board Specifications (often paired with board name
) is found in the Dell Chromebook 3100 series (both Clamshell and 2-in-1 models). Processor: Intel Celeron N4000 USB-C Power Delivery (PD) standard. Common Issues:
Blown charging MOSFETs, liquid damage around the battery connector, or firmware (EEPROM) corruption. 2. Sourcing the Schematic & Boardview
Since these aren't hosted on official Dell portals, technicians typically find them through specialized "schematic repositories": Repair Communities: Forums like Reddit's ElectronicsRepair la-g851p schematic
often have users who share these files for educational or repair use. Paid Repositories: Sites like Lab One Care frequently list the PDF schematic and (boardview) files for a small subscription fee. 3. Quick Diagnostic Tips (No Schematic Needed)
If you are troubleshooting power issues without a schematic yet: Hard Reset: Press and hold to reset the power controller. Charging Rails:
Check for 5V or 20V at the USB-C input. If you only see 5V, the or equivalent USB-C controller is likely not communicating. Battery Isolation:
If the unit won't turn on, unplug the internal battery and try powering it solely via the AC adapter. Google Help on this board or look for a Fix hardware and system problems - Chromebook Help
The LA-G851P schematic is more than a technical drawing; it is a forensic tool. For the Dell Precision 7730/7530 family, component-level repair is impossible without it.
By understanding the power sequence, utilizing a Boardviewer, and cross-referencing common faults, you can transform a "dead board" into a repaired workstation in under two hours.
Next Steps:
Have a specific fault on your LA-G851P? Probe the +3.3V_ALW first—90% of problems live there. The LA-G851P (EDB10) is a motherboard commonly used
The LA-G851P (Compal EDB10) is a motherboard primarily used in the Dell Chromebook 3100. While it is a relatively simple board designed for education-focused laptops, its schematic is essential for repairing common issues like power delivery failures and liquid damage. Technical Specifications and Features
The schematic for this board typically covers the following hardware configuration:
Processor: Supports Intel Celeron N4020 or N4120 (Gemini Lake Refresh). Memory: Features 4GB LPDDR4 RAM soldered to the board. Storage: Integrated eMMC storage, commonly 16GB or 32GB.
Charging: Uses USB-C power delivery. This is a common failure point that requires the schematic to trace. Repair Information
The LA-G851P schematic is a critical "road map" for technicians because the device is used in schools. Key Sections to Reference
Power Rails: Includes diagrams of the 3.3V/5V always-on circuits and the CPU core voltage rails.
USB-C Logic: Useful for diagnosing "not charging" issues or dead ports.
BIOS / EC Pinouts: Useful for flashing the firmware if the device is "bricked". Conclusion: Your Motherboard Repair Journey Starts Here The
Boardview Compatibility: Often paired with a .CAD or .BRD boardview file to help locate specific tiny components (like capacitors and resistors) on the physical PCB. Common Repairs No Power: Testing the input mosfets and charging IC.
Liquid Damage: Identifying corroded traces and replacing shorted capacitors.
Connector Replacement: Mapping the pins for the battery and display cables.
💡 Pro Tip: When searching for this schematic, ensure it matches the Revision (Rev) of the board (e.g., Rev 1.0), as component values can change between versions. Technical downloads are available on sites like Laptop-Schematics or ChinaFix.
Here’s a helpful write-up regarding the LA-G851P schematic, commonly associated with HP laptop motherboards (e.g., HP Pavilion 15, 17 series, or similar models using this board part number).
The Latitude 7000 series commonly utilizes the Texas Instruments BQ24780S battery charge controller. This component is a frequent point of failure. If the laptop runs on AC power but will not charge the battery (or detects no battery), the schematic allows you to trace the following:
Working on this specific board requires patience. Here are three tips for navigating the schematic:
The most common issue with these laptops is a failure to power on ("No Post" or "No Power"). The schematic details the "Power Sequence," which is the strict order in which voltage rails must turn on.
NBSWON# signal. Trace that line to the EC chip. If the voltage is stuck low, you likely have a shorted capacitor on that line.When diagnosing a dead Dell Latitude using this schematic, technicians typically focus on three main areas:
A novice might look at a schematic and see a mess of lines and acronyms. Here is the breakdown of what you will find inside the LA-G851P PDF.