Acer APS350 Quick Start Manual

The Acer APS350 is a 350W ATX power supply unit designed for desktop computers, providing stable and efficient power delivery with active PFC, multiple protection features (OVP, OCP, OPP, SCP), and a quiet 120mm cooling fan. It features standard ATX connectors including 24-pin main, 4-pin CPU, SATA, and peripheral Molex connectors. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Connections 6. Connecting to Motherboard & Devices 7. Power Management 8. Safety Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 350W power supply unit, AC power cord, mounting screws, user manual.

Feature	Description
Power Rating	350W continuous output
Efficiency	Active PFC (Power Factor Correction)
Cooling	120mm quiet cooling fan
Protections	OVP, OCP, OPP, SCP (Over Voltage/Current/Power, Short Circuit)
Main Connector	24-pin ATX (20+4 pin compatible)
CPU Connector	4-pin ATX12V
Peripheral Connectors	4-pin Molex connectors
SATA Connectors	SATA power connectors for drives
AC Input	100-240V AC, 50/60Hz universal input
DC Output	+3.3V, +5V, +12V, -12V, +5VSB

Installation

Unpack and inspect contents. Ensure computer is powered off and unplugged.

Open computer case: Remove side panel to access power supply bay.
Position PSU: Align APS350 with rear mounting area, fan facing downward or rear as per case design.
Secure with screws: Use provided screws to fasten PSU to case.
Connect cables: Route cables neatly and connect to motherboard and devices.
Close case: Replace side panel after all connections are secure.

WARNING! Ensure computer is unplugged before installation. Handle with care to avoid electric shock.

First-Time Setup

After installation, power on computer and verify operation.

Connect AC power: Plug power cord into APS350 and wall outlet.
Power on system: Press computer power button; check for fan operation and POST.
Verify voltages: Enter BIOS/UEFI to check power supply readings if supported.
Load test: Run system under normal load to ensure stability.

CAUTION! Do not open PSU casing; no user-serviceable parts inside.

Specifications

Model: Acer APS350.
Max Power: 350W.
Input Voltage: 100-240V AC, 50/60Hz.
Input Current: 5A max at 100V, 2.5A max at 240V.
Efficiency: >80% typical load with active PFC.
Cooling: 120mm ball bearing fan.
Protections: OVP, OCP, OPP, SCP.
Operating Temp: 0°C to 40°C.
Storage Temp: -20°C to 70°C.
MTBF: >100,000 hours.

Controls and Connections

Rear Panel: AC input socket, power switch, ventilation grill. Front (internal): Connector bundle.

Connectors: 24-pin main (20+4), 4-pin CPU, SATA (multiple), 4-pin Molex (multiple), 4-pin Floppy (optional).

Power Switch: On/Off rocker switch at rear. Fan Control: Automatic thermal control for quiet operation. Cable Management: Fixed cables with sleeving for reduced clutter.

Connecting to Motherboard & Devices

Connect all necessary cables for system operation.

Main power: Connect 24-pin to motherboard ATX power socket.
CPU power: Connect 4-pin to motherboard CPU power socket near processor.
SATA devices: Connect SATA power cables to hard drives, SSDs, optical drives.
Peripheral devices: Connect 4-pin Molex to fans, legacy devices if needed.
Ensure secure connections: Push connectors fully until they click.

Tip: Route cables behind motherboard tray for better airflow and aesthetics.

Power Management

Supports ATX power management features.

Soft-off: System can be powered off via OS command.
Standby: +5VSB provides standby power for wake-up functions.
Fan control: Fan speed adjusts automatically based on temperature and load.
Efficiency: Active PFC improves efficiency and reduces harmonic distortion.

WARNING! Do not exceed total 350W power draw; check device power requirements.

Safety Features

Protections: Over Voltage Protection (OVP), Over Current Protection (OCP), Over Power Protection (OPP), Short Circuit Protection (SCP). Safety Certifications: CE, CB, FCC, RoHS compliant.

Care & Maintenance

Keep vents clean from dust. Use compressed air to blow dust from fan and vents periodically.

CAUTION! Unplug power cord before cleaning. Do not use liquids or vacuum cleaner directly on PSU.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE marked for European market. RoHS compliant. Copyright © Acer Inc. For support, visit www.acer.com or contact local Acer service center.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Switch/connection	Ensure rear switch is ON; check AC cord and wall outlet; verify connections.
Fan not spinning	Thermal control/fault	Fan may not spin at low load; if system overheats or no power, PSU may be faulty.
System shuts down	Overload/overheat	Check total power draw; ensure ventilation; clean dust from vents.
Unstable operation	Insufficient power	Upgrade to higher wattage PSU if system exceeds 350W.
Burning smell	Component failure	Immediately power off and unplug; contact service center.

Reset: Power cycle by turning switch off, unplugging for 30 seconds, then restarting.

Service: Contact Acer support or authorized service center; do not attempt internal repair.