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Ilpi354 | Va Schematic Updated

ILPI-354 V.A (schematic or board view) typically refers to the power supply board

Eserviceinfo often hosts service manuals for these Dell chassis. ilpi354 va schematic updated

Check the Fuse: Locating the fuse on the schematic is the first step. If it’s blown, check the Bridge Rectifier and the main Switching MOSFETs for shorts. ILPI-354 V

Backlight Inverter: Dedicated transformer and MOSFETs that provide the high-voltage AC required for the monitor's CCFL or LED backlight. 3. Common Troubleshooting Steps Check Standby: Verify 5V_SB at the output connector

  1. Check Standby: Verify 5V_SB at the output connector (Pin 1-2).
  2. Force On: The schematic shows the PSON pin location. Jumping this to 5V should activate the relay click.
  3. PFC Check: Measure the large filter capacitor. If it sits at ~300V (rectified AC) instead of 380V, the PFC is not running. The updated schematic helps trace the PFC IC VCC supply line, which is often the failure point.
  4. Backlight Test: The updated schematic provides the precise LED connector pinout (Voltage vs. Return). It shows that the board drives strings in series. If one LED in the string opens, the schematic indicates the OVP pin on the driver IC will spike, latching the unit off.