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TroubleshootingDX-400WPS/DX-520WPS

Troubleshooting
If your new power supply is not working correctly, try the following:
• Make sure that the computer power cord is firmly plugged into
the power cord connector on your computer.
• If you are using a surge protector, make sure that it is plugged in
and turned on.
• Make sure that the wall outlet is supplying power. For example,
plug a lamp into the outlet and turn it on.
• If you have the DX-400WPS, make sure that the red voltage
switch (located on the back of the power supply) is set to the
correct voltage setting. The setting for the United States is 115V.
The setting for Europe and other countries is 230V.
• Make sure that the system board power supply cable is securely
connected to the system board connector (24pin or 20 pin).
• Make sure that all power supply cables to peripheral devices,
such as hard drives, optical drives, and fans, are securely
connected. Any loose power cable connections may cause the
power supply to operate incorrectly.
• The power supply may be overloaded. Unplug any unnecessary
components, such as extra drives, then try again.
• If the power su pply is very ho t, check the case fans an d the powe r
supply fan. Replace any faulty case fans, then try again.
• If you have the DX-400WPS, m ake sure the power switch (I/O) on
the back of the power supply is set to ON (I).
Specifications

400 Watt Power Supply

520 Watt Power Supply

Legal notices

FCC warning

This equipment may generate or use radio frequency energy. Changes
or modifications to this equipment may cause harmful interference
unless the modifications are expressly approved in the instruction
manual.The user could lose the authority to operate this equipment if
an unauthorized change or modification is made.
Caution:
Any change or modification to the equipment not expressly
approved by the manufacturer or its authorized parties could void your
authority to operate the equipment.

UL statement

Any information or documentation provided to you involving UL Mark
services is provided on behalf of Underwriters Laboratories, Inc.
Products that bear the UL Mark are identical to those that were
evaluated by UL and found to be technically compliant with the UL’s
applicable requirements.
For further information regarding the use of UL marks, please visit the
UL Website at www.ul.com.
Output Voltage +12V1DC +12V2DC +5VDC +3.3VDC -12VDC +5Vsb
Max Load 8.0 A 14.0 A 20.0 A 20.0 A 0.3 A 2.5 A
Min Load 1.0 A 1.0 A 0.3 A 0.5 A 0.0 A 0.1 A
Max Watt 300 W
Peak Power 400 W
Regulation ±5% ±5% ±5% ±5% ±10% ±5%
Ripple 120 mV 120 mV 50 mV 50 mV 120 mV 50 mV
Noise 120 mV 120 mV 50 mV 50 mV 120 mV 50 mV
Power Good
Signal
100-500 mS
Power Fail
Signal
1 mS Min.
Hold-up Time 16 mS Min.
Dimensions 5.5×3.4×5.9inches (W×H×L)
140× 86 × 150 mm (W × H × L)
Output Voltage +12V1DC +12V2DC +5VDC +3.3VDC -12VDC +5Vsb
Max Load 18.0 A 16.0 A 18.0 A 20.0 A 0.3 A 2.0 A
Min Load 1.0 A 1.0 A 0.5 A 0.3 A 0.0 A 0.005 A
Max Watt 420 W
Peak Power 520 W
Regulation ±5% ±5% ±5% ±5% ±10% ±5%
Ripple 120 mV 120 mV 50 mV 50 mV 120 mV 50 mV
Noise 200 mV 200 mV 100 mV 100 mV 200 mV 100 mV
Power Good
Signal
100-500 mS
Power Fail
Signal
1 mS Min.
Hold-up Time 16 mS Min.
Dimensions 5.5 ×3.4 × 5.9 inches (W ×H × L)
140× 86 × 150 mm (W × H × L)
13-0313 DX-400WPS-DX-520WPS_MAN_ENG_V5.book Page 4 Thursday, March 27, 2014 7:47 AM