Look for alphanumeric strings that match common layout codes: Quanta: Starts with "DA0" (e.g., DA0VM7MAB6E1 ). Compal: Starts with "LA-" (e.g., LA-D101P ).
Often denotes the revision or specialized manufacturing process.
To find the correct , you must identify the actual motherboard model number , which is usually found printed on a white sticker or directly on the PCB, often located: Underneath the RAM slots. Near the CPU socket. Near the edge of the board. Common Associated Models: HP ProBook 4740s / 4710s (HannStar J MV-6/MV-4). Samsung NP270E5E (using similar HannStar designs).
Look for codes like Crux-Intel , Sleekbook , or similar structural names. Hsb J Mv-6 94v-0 E89382 Schematic Pdf
This motherboard is not exclusive to a single laptop model. It is a reference design that HannStar sells to various OEMs who then integrate it into their own devices. Based on repair forum posts and marketplace listings, you can find this board in at least the following devices:
If the laptop has "no power", a schematic helps locate the 19V DC input, the power management IC (PMIC), and the 3.3V/5V rails.
Understanding how the CPU communicates with the PCH (Platform Controller Hub) and BIOS chip. 3. Where to Find the Schematic PDF Look for alphanumeric strings that match common layout
Before diving into any repair, you need to understand the power path. Here's what a technician looks for first on a schematic:
The identifier refers to a multilayer printed circuit board (PCB) manufactured by HannStar Board Corp . While "E89382" is a UL certification code for the manufacturer, "HSB J MV-6" specifically denotes the board's revision and material compliance. These boards are most commonly found as primary or daughterboard components in HP EliteBook, ProBook, and Envy laptops. Understanding the Identification Codes
The manufacturer of the PCB itself. HannStar Board Corporation is a major, Taiwan-based producer of printed circuit boards used by numerous computer manufacturers. To find the correct , you must identify
A "94V-0" rating means that burning stops within 10 seconds on a vertical specimen, and drips of particles are allowed as long as they are not inflamed.
Because HannStar manufactures boards for many different companies, the "E89382" code alone is usually to find a precise schematic. To find the correct PDF, you must locate the primary manufacturer's motherboard part number , which is often printed in a different location on the board. Common examples include: HP Envy series : Boards might be found in models like the HP Envy 17 Go to product viewer dialog for this item. or DV7 laptop Acer Aspire series : Specifically models like the E5-571 Go to product viewer dialog for this item. or E5-531 Go to product viewer dialog for this item. often use these boards with Intel 4th Gen processors. Sony Fit 14 Go to product viewer dialog for this item. : Some convertible models use this specific board revision. Where to Access Schematics
Because this PCB code is used by multiple manufacturers, you must find the (the engineering name) to locate the correct schematic. Common devices using HannStar E89382 boards include: HP EliteBook Folio 9470M (Internal I/O boards) HP ProBook 4740s HP ProBook 640 G2 Sony Vaio (Various MBX platforms) Lenovo laptops 3. How to Find the Actual Schematic