A Fan
The fan blows the heated air out of the power supply unit.
Therefore never cover the ventilation openings of the power supply unit. If you were to do this,
the accumulation of heat would destroy the power supply unit and the connected components!
B Power Switch
The power supply unit is switched on and off by the power switch.
Please also make sure that you note point 3 of these operating instructions!
C Mains Socket
Switch the power supply unit off (position "O" of the power switch). Then connect the connection to a
proper mains plug socket with protective earthing conductor via the power cord provided.
D Bolt Holes
The four bolt holes on the outside corners of the power supply unit are for fastening the power supply
unit to the PC housing.
Where possible, use all four fastening holes for fastening, because the high weight of the power
supply unit means that there is a risk that e.g. the PC housing might be damaged during
transportation and that the power supply unit might become loose.
5. Installation
If you have no technical knowledge of the installation, have the installation carried out
by a SKILLED PERSON or at an appropriate technical workshop!
Incorrect installation will damage the power supply unit as well as your computer and all
the devices connected to it. In addition, it is connected with risks such as e.g. short circuit,
electrical shock and the risk of fire.
Caution, danger to life!
Switch off both the computer into which it is intended to install the power supply unit and
all connected devices and separate all devices from the mains voltage. Pull the mains
plug out! Switching off at the power switch is not enough!
Open the housing of your computer and carefully remove the housing lid.
If the power supply unit is intended to serve as a replacement for e.g. an old, defective power supply
unit, then you must first remove the present power supply unit. First, carefully loosen all connecting plugs
for the mainboard and the installed devices. Hold the old power supply unit tight and remove all lock
bolts from the power supply unit, so that it can be taken out of the PC housing.
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8. Disposal
Dispose of the useless product in accordance with the applicable legal regulations.
9. Trouble Shooting
With the "PC-ATX 550W switching power supply" you have purchased a reliable product which has been
built to the latest standards of technology.
Despite this, problems and malfunctions can still arise.
We would therefore like to describe to you how possible faults may be rectified.
Always follow the safety instructions!
Problem
Possible Solution
No function
Is the device switched on?
Has the power cord been correctly connected at both ends?
Is the mains socket functional?
Are all the connections on the devices in the inside of the computer correct? If
e.g. the hard drive cable is stuck in twisted, the computer might not start due
to a short circuit, and the power supply unit not start!
If you have assembled a new PC; some mainboards do not start if the CPU fan
is turning too slowly (e.g. CPU fans with lower revolutions for reduction of noise).
Computer does not
Upon the switching-on of the power supply unit (via the power switch on the
start up when
rear side
the power supply
of the ATX power supply units), only the standby voltage is on the mainboard.
unit is switched on
Only a brief press of the power button on the front of your PC housing
switches the ATX power supply unit on (insosofar as the power button is
connected with
the corresponding connection of your mainboard).
Therefore check that the power-button is correctly connected with
the mainboard.
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