This refers to HannStar Board Corporation, a major global manufacturer of Printed Circuit Boards (PCBs). They manufacture the raw boards for major electronics brands like HP, Dell, and Acer, but they do not design the actual electronic components or circuits.
When looking at the text printed directly on the green or blue solder mask of the PCB, each string represents a specific certification, manufacturer asset, or revision code rather than a single retail part number.
This board is commonly used as a sub-board (daughterboard) or main motherboard for laptops from brands like Specific Laptop Models: Often found in the HP EliteBook Folio 9470M 2. Board Functions & Specifications
Green or white crust around pins, usually caused by liquid spills. --- Hsb J Mv-6 94v-0 E89382 Schematic Pdf
Once you share the actual schematic content or correct model, I’ll write a deep post covering:
Features such as HDMI, VGA, RJ-45 Ethernet, and Mini PCI-E slots for wireless cards are common on these revisions. 3. Schematic & Documentation Resources
✅ Authentic & Unmodified – Unlike generic block diagrams, this schematic matches the actual PCB layout. Every trace, jumper, and test point for the “MV-6” revision is present. ✅ Component-Level Detail – You’ll find exact values for resistors, caps, and the E89382 marking (likely a UL-recognized transformer or optocoupler). No guesswork. ✅ 94V-0 Compliance Note – Helpful if you’re repairing safety-critical gear (flame-retardant PCB). The schematic calls out high-voltage isolation barriers clearly. This refers to HannStar Board Corporation, a major
While the board itself is generic, it is most commonly integrated into the following devices: : Found in the EliteBook Folio 9470M (often as an I/O or daughterboard for USB/Audio) and the ProBook 640 G2 : Used in the Aspire E5 series (E5-571, E5-531). Sony / Lenovo
: This is the version or structural iteration of the raw underlying fiberglass sheet layout utilized during factory processing.
: Measure the voltage on the current-sensing resistor (usually a wide, low-resistance component labeled R010 or R020). This board is commonly used as a sub-board
Verify the +3V_LCD power rail at the LVDS/eDP pinout map on the schematic. Reflash the SPI ROM chip. Best Practices for Working with Third-Party Schematics
: A UL flammability rating indicating that the plastic components will self-extinguish within 10 seconds. : The UL tracking number for HannStar. Compatible Laptop Models
[DC Jack / Battery] ──> [19V / 12V Main Rail] ──> [3.3V / 5V Standby] ──> [EC / Super IO] ──> [Power Button] ──> [RAM / CPU Core Rails] 1. Verify the Primary Rail (VIN / G3E)