User's Manual
8 9
OPP (overload protection)
This safeguard is triggered if the total output of the power supply exceeds the specied maximum load. This
can happen if the output of power supply is insucient for the system (incorrectly dimensioned).
7. TROUBLESHOOTING
Please note: If you have an ATX system, the power supply is enabled by the motherboard in order to boot the
PC. For this reason, please refer to the motherboard or case manual to check whether the on/o switch is
connected correctly�
Caution: There is a risk of fatal injury when working on power sources. If you notice traces of smoke, damaged
cables and exposure to liquids, immediately disconnect the power from the mains and do not use it again.
Never open the power supply case. High-voltage components in the interior of the power supply may still be
live after a longer period of disuse.
Please have any and all necessary repairs conducted by an authorized expert!
Opening the device will void your warranty.
If the system in which you installed the power supply does not work properly, check for these possible sources
of error rst:
∙ Check that the mains cable to the power supply is correctly and rmly plugged into the power supply and the
socket. Ideally, you should use a separate power socket for the computer power supply.
∙ Check whether all connectors are correctly plugged in, and make any necessary adjustments, such as in
case of incorrect polarity.
∙ Check the connection between the on/o switch on the case to the motherboard. Refer to the motherboard
manual if needed! Switch the power supply on by setting the switch to position “I” and then pressing the on/
o switch on the case. If the power supply still does not switch on, continue with the next item.
∙ Check your system for possible short circuits or faulty hardware, making sure that you switch o the
computer and disconnect all devices not required for the computer to start. Switch the computer back on.
Repeat this process and connect one device after each reboot, until you discover the fault. If the power
supply does not react due to a short circuit, wait for at least 5 minutes before switching back on as the
device is equipped with overload protection.
8. FREQUENT PROBLEMS
Problem: The selected voltages (via BIOS/UEFI) are to low/high
If you check the power supply voltages via the BIOS/UEFI on the motherboard or the operating system, note
that they may be displayed incorrectly. This typically results from imprecise measurements by motherboard
and does not necessarily imply a genuine problem.
Problem: After installing a new graphics card, the PC will not power on, or it crashes frequently.
You have installed a new higher performance graphics card in your system and now your PC fails to boot, or it
crashes immediately with minimal workload. The power supply is inadequately dimensioned for your graphics
card. Before making a purchase, please refer to our PSU calculator tool on www.bequiet.com. The tool will help
you to nd the right be quiet! power supply from our range of products.
Important note:
If the power supply does not work, make sure that you have read these instructions thoroughly and have
ruled out the problems referred to earlier on. If the problems persist, please contact our customer service
department immediately.
9. ACCESSORIES
The power supply package includes the following accessories: Cable management cable set, Slot cover with
Overclocking Key, Jumper for permanent enabling of the overclocking function, Mains lead, Operating manual,
Cable ties, Screws for installing the power supply
10. NOTES ON DISPOSAL
Due to European directives* you are no longer allowed to dispose of used electrical and electronic
devices as unsorted domestic waste. The devices must be collected separately. The trash can on