Converts incoming AC voltage to a rough, pulsating DC voltage.
The is a standard 240W switching power supply unit (PSU) used in HP business desktops, such as the HP Compaq 6200 and 8200 Elite series. Technical Overview
Steps down main input power to the highly specific voltages required by the liquid crystal layer and logic gates.
: Current surges are immediately mitigated by a sacrificial ceramic fuse and a Metal Oxide Varistor (MOV) designed to clamp high-voltage spikes. d10240p1a schematic work
load efficiency), which minimizes harmonic distortions across the input AC waveform. Stages of the D10240P1A Circuit Topology
A schematic's most basic job is to show how parts connect. For a display, this means mapping every pin correctly. Common signals you will see in a modern a-Si TFT-LCD display include:
Multi-rail +12V architecture (consisting of 12V1 and 12V2 configurations) accompanied by a +12Vsb (standby) line. Power Factor Correction (PFC): Active PFC ( >0.97is greater than 0.97 Converts incoming AC voltage to a rough, pulsating
: In electronics, every component has a part number. This helps in identifying the component and its specifications.
Find the enable signal ( BL_EN or EN ) coming from the host processor interface. Trace it to the backlight driver chip. If this signal is missing on your physical board, the backlight will remain off even if the voltages are correct. Trace the PWM pin, which controls the brightness through duty-cycle modulation. Step 3: Map the Data Paths
2. Primary Rectification and Active Power Factor Correction (PFC) : Current surges are immediately mitigated by a
Over 89% to 91% efficiency at 50% typical load profiles.
Since the identifier "d10240p1a" doesn't correspond to a standard commercial part number, it is likely a specific batch code, a truncated part number from a Bill of Materials (BOM), or a custom variant.
is proprietary and rarely released by HP, its functional design is a standard . It operates by converting a high-voltage AC input into regulated low-voltage DC outputs through several stages: