Compaq 0950-3303 120W Power Supply User Manual

1. Introduction

This manual provides essential instructions for the installation, operation, and maintenance of your Compaq 0950-3303 120W Power Supply. This power supply unit (PSU) is designed to provide stable and reliable power to compatible computer systems, specifically the Vectra Ve4 series. Please read this manual thoroughly before installation and use to ensure proper function and safety.

2. Safety Information

Always observe the following safety precautions:

• Disconnect Power: Always unplug the computer from the wall outlet before installing or removing the power supply.
• Static Electricity: Discharge any static electricity from your body by touching a grounded metal object before handling components.
• Ventilation: Ensure adequate ventilation around the power supply. Do not block air vents.
• Moisture: Keep the power supply away from liquids and excessive humidity.
• Qualified Personnel: Installation should be performed by individuals familiar with computer hardware and electrical safety.
• Internal Components: Do not open the power supply casing. High voltages are present inside, even when unplugged.

3. Package Contents

Verify that your package contains the following items:

• Compaq 0950-3303 120W Power Supply Unit
• AC Power Cord (may be included depending on region/seller)

4. Setup and Installation

Follow these steps to install the power supply into your computer system:

1. Prepare the System: Ensure the computer is completely powered off and unplugged from the wall outlet. Open the computer case according to its manufacturer's instructions.
2. Remove Old PSU (if applicable): Disconnect all cables from the existing power supply. Unscrew and remove the old PSU from the case.
3. Install New PSU: Carefully slide the Compaq 0950-3303 power supply into the designated PSU bay in your computer case. Secure it with the appropriate screws (typically four) at the rear of the case.
4. Connect Cables:
   • Motherboard Power: Connect the main 20-pin or 24-pin ATX power connector to the motherboard.
   • CPU Power: Connect the 4-pin or 8-pin CPU power connector to the motherboard.
   • Peripheral Power: Connect SATA power connectors to hard drives, SSDs, and optical drives. Connect Molex connectors to older peripherals or case fans as needed.
   • Graphics Card Power (if applicable): If your system includes a dedicated graphics card that requires additional power, connect the appropriate PCIe power connectors.
5. Cable Management: Route cables neatly to improve airflow and prevent interference with other components. Use cable ties if necessary.
6. Close Case: Once all connections are secure, close the computer case.

Figure 1: The Compaq 0950-3303 120W Power Supply unit, showing its fan, power input, and various output cables for internal computer components.

5. Operating Instructions

After successful installation, follow these steps to power on your system:

1. Connect AC Power: Plug the AC power cord into the power supply's input socket and then into a grounded wall outlet.
2. Power Switch: Locate the power switch on the rear of the power supply (often a rocker switch labeled "I" for On and "O" for Off). Ensure it is in the "I" (On) position.
3. System Power: Press the power button on your computer case to turn on the system.

To power off the system, shut down the operating system normally and then, if desired, switch the power supply's rear switch to the "O" (Off) position and unplug the AC cord.

6. Maintenance

Proper maintenance ensures the longevity and optimal performance of your power supply:

• Dust Removal: Periodically clean dust from the power supply's fan and vents using compressed air. Ensure the computer is powered off and unplugged before cleaning.
• Ventilation: Ensure the computer case has good airflow and that the power supply's vents are not obstructed.
• Environmental Conditions: Operate the power supply in a cool, dry environment, away from direct sunlight and heat sources.

7. Troubleshooting

If you encounter issues, try the following basic troubleshooting steps:

• No Power:
  • Check if the AC power cord is securely plugged into both the power supply and the wall outlet.
  • Ensure the power supply's rear switch is in the "I" (On) position.
  • Verify that the wall outlet is functional by plugging in another device.
  • Confirm all internal power cables (motherboard, CPU) are securely connected.
• System Instability/Random Shutdowns:
  • Ensure the power supply is adequately ventilated and not overheating.
  • Verify that the power supply's wattage (120W) is sufficient for all installed components.
• Unusual Noises:
  • If you hear grinding or loud fan noises, inspect the power supply fan for obstructions or excessive dust. If the noise persists, the fan may be failing, and the PSU may require replacement.

If problems persist after performing these checks, consult a qualified technician or contact Compaq support.

8. Specifications

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official Compaq support website. Keep your proof of purchase for warranty claims.