Schematic [verified]: D10-240p1a
This PSU uses proprietary HP connectors rather than standard 24-pin ATX layouts: 6-Pin connector. P2 (CPU Power): 4-Pin ATX +12V connector. P3 (Auxiliary): Special slim 6-pin connector. Circuit Architecture Overview
2. Primary Rectification and Active Power Factor Correction (PFC)
The is a proprietary 240-watt Switching Mode Power Supply (SMPS) engineered specifically for HP's Small Form Factor (SFF) desktop ecosystem. Found within enterprise-class workhorses like the HP Elite 8000, 8100, 8200 , and Pro 6000 series, this power supply unit (PSU) features a highly tailored electronic layout. D10-240p1a Schematic
is a specialized, 240-watt switching power supply unit (PSU) manufactured by Chicony Power Technology or Hipro Electronics for Hewlett-Packard small form factor (SFF) desktop computers. Understanding its schematic circuit layout is vital for hardware engineers, IT technicians, and electronics repair hobbyists working to restore legacy business desktops like the HP Compaq 6000, 6200, 8000, 8100, and 8200 Elite series. Because original factory circuit blueprints are proprietary and protected by corporate intellectual property laws, technicians must navigate the board using component tracing, functional block understanding, and standard switching topology topologies. Technical Specifications Overview
Dried out or bulging low-ESR electrolytic capacitors on the output lines, causing excessive voltage ripple. Primary Input Line / PFC This PSU uses proprietary HP connectors rather than
Expected voltage is between when the unit is in standby.
: 240W total power with major rails including +12V1, +12V2, and 12Vsb (standby). Efficiency Circuit Architecture Overview 2
Armed with this knowledge and a correctly interpreted schematic, you can diagnose, repair, and even improve your D10-240p1a power supply for years of reliable service. Whether you're a professional in an industrial plant or a hobbyist in a home lab, the schematic is your key to unlocking this device's full potential.
If the unit is completely dead with a blown input fuse, check the primary MOSFET for a drain-to-source short. When these transistors fail, they often take out the primary snubber network components (resistors/diodes designed to suppress inductive voltage spikes) and can damage the sensitive circuitry on the green PWM driver module.
This independent power converter remains active whenever AC power is plugged in, generating the critical .
To safely force the power supply to turn on during a bench repair test, a technician must pull the PS-ON line low by jumping it to a ground wire ( GND ), which mimics the signal sent by the motherboard when pressing the computer's power switch. If you are working on a specific board repair, let me know:
