Dual-channel DDR3 DIMM slots (usually supporting up to 4GB or 8GB maximum depending on the specific BIOS version). 2. Reading the H-IG41-uATX Rev 1.1 Schematic Circuit Blocks
is a micro-ATX board built around the .
: Move jumper to pins 1-2 for ~10 seconds, then return to 2-3. Memory & CPU Support
Before diving directly into circuit traces and board repair, technicians must establish the hardware constraints of the Foxconn H-IG41-uATX platform : Technical Specification Micro-ATX (uATX) measuring 24.5 cm x 24.5 cm CPU Support
: Often related to BIOS microcode. The board may ship with an older BIOS (Version 6.05 or 6.07) that lacks support for newer 45nm Core 2 Quad CPUs or certain Xeon mods. h-ig41-uatx rev 1.1 schematic
Often a direct short-circuit on a major power rail or a failed Super I/O chip.
Locate the power button pinheader ( FP_PWR_BTN ). Trace the signal back to the SIO to ensure it toggles from 3.3V to 0V when pressed.
Use the schematic to find the +5VSB (Standby) pin. If it's missing, the ICH7 southbridge or Super IO chip may be faulty.
The H-IG41-UATX Rev 1.1 motherboard hails from an era where liquid-electrolyte capacitors were still heavily utilized outside of the immediate CPU VRM zone. The schematic will list these as polarized capacitors (labeled with a C prefix, e.g., BC12 , EC5 ). Check capacitors along the peripheral lines (+5V and +12V filtering near the PCI slots) for physical bulging or high ESR (Equivalent Series Resistance). Reading Boardview Files alongside Schematics Dual-channel DDR3 DIMM slots (usually supporting up to
While an original, full circuit diagram from HP is not publicly available for this OEM board, the official (HP part # 582679-001 ) is the primary resource for its layout and specifications. This document is the definitive guide to identifying all major components and their functions. It includes essential information like a detailed component layout diagram, the precise pinout for the 9-pin front-panel header (for the power button, reset button, POWER LED on pins 2 and 4, and HDD LED), and specifications for power connectors and jumper settings.
Because the H-IG41-uATX Rev 1.1 was primarily an OEM board built by Foxconn for HP, official schematics were never publicly released to consumers. To find a copy of the circuit diagram:
Use software like OpenBoardView to search for the component designator found on the schematic (e.g., R234 or Q18 ).
: This indicates the revision of the motherboard design. Revision numbers are used to track changes in hardware design, layout, or component usage. : Move jumper to pins 1-2 for ~10
The BIOS is the "software schematic" for the motherboard. The H-IG41-UATX Rev 1.1 experienced several BIOS revisions:
When an H-IG41-uATX board fails to boot, technicians turn to the power delivery traces outlined in the schematic. Power arrives via a standard 24-pin ATX connector and a 4-pin ATX_12V CPU power connector. Understanding the step-down regulators is key to diagnostic mapping: 3VSB and 5VSB (Standby Rails)
configure the board for different CPU FSB speeds, memory voltage, or even OEM branding (HP vs. generic). These are gold for modders: changing a strap can unlock hidden multiplier support or alter the boot logo.
Usually found on page 1 or 2, this provides a bird's-eye view of the board. It shows how the G41 and ICH7 chipsets connect to memory, video, and power rails. Always start here to understand signal flow. 2. Power Power Rails (VRM Circuit)
To clear the Real Time Clock (RTC) RAM or BIOS passwords, locate the 3-pin jumper. Move it from pins 2-3 to 1-2 for 5–10 seconds while the system is powered off.