Sony NF-A20 5V PWM Users manual

Dear customer,

Congratulations on choosing the Noctua NF-A20 5V PWM.

We from Noctua always strive to achieve superior quiet cooling performance
regardless of whether it’s a big 200mm fan or a small 40mm one.
That’s why the NF-A20 5V PWM sports many of the features and advanced
aerodynamic design measures of our award-winning larger models, making it
perhaps the most thoroughly optimised 200mm fan on the market.

Each Noctua fan is double checked for flawless operation by our quality control
team before it leaves the factory and I’m confident that you will be able to sense
some of the research, attention and care we’ve put into making this product.

Enjoy your NF-A20 5V PWM!

Yours sincerely,

Roland Mossig, Noctua CEO

This document includes some instructions for
installing, running and cleaning your NF-A20
5V PWM.

Should you have any further questions, our
support team ([e-mail]) will be
glad to assist you at any time.

Please also have a look at the regularly
updated FAQs on our website:
http://www.noctua.at/faqs

This document is also available in other
languages at the following URL:
http://www.noctua.at/manuals

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Designed in Austria, Noctua’s premium cooling
components are internationally renowned for
their superb quietness, exceptional performance
and thoroughgoing quality.

Having received more than 6000 awards and
recommendations from leading hardware
websites and magazines, Noc tua’s fans and
heatsinks are chosen by more than a hundred
thousa n d satis fied customer s around the globe.

[e-mail] | www.noctua.at

NF-A20 5V PWM | User Manual

www.noctua.at

Installation Connection Cleaning and Maintenance

If you replace an existing fan, it is usually best to use the screws (or other moun­ting mechanisms) used for the original fan.

Depending on the application, it may also be possible to use the supplied moun­ting screws or silicone anti-vibration mounts.

For installing the fan using the NA-AV3 anti-vibration mounts, please
first pull the F side through the fan’s mounting holes until pawl 1 is
all the way through the first hole.

Caution: Only pull pawl 1 through the first hole.
Don’t overstretch the mounts by pulling pawl 5
through the opposite hole!

Then pull the C side through the mounting holes of the case.

If the long ends of the mounts are in the way, you can use scissors
to cut them after installation.

Note that this will then make them difficult to reinstall in the
future.

CAUTION: Being a 5V PWM fan, the NF-A20 5V PWM can not be run at 12V and will be
damaged when used with typical 12V power sources such as PC mainboard fan headers.

The NF-A20 5V PWM comes with a 4-pin PWM fan connector for PWM based speed
control. Please note that the fan can also be connected to standard 3-pin fan headers
though. When connected to 3-pin fan headers, the fan will run at full speed.

If you would like to run the fan on USB power sources such as devices with USB host
ports, power banks or USB power supplies, please use the included NA-AC7 USB power
adaptor cable. Please note that the NA-AC7 must be used exclusively with the NF-A20
5V PWM fan because using it with other fans bears the risk of damaging sensible USB
host devices.

If you would like to connect the fan to other fan headers, please use the supplied
OmniJoin adaptor set as described below.

The fan features a short 20cm primary cable in order to help you minimise cable clutter
in typical applications. If you need a longer cable, please add the supplied 30cm
extension (NA-EC1).

Using the OmniJoin adaptor set

The supplied OmniJoin adaptor set allows you to easily connect the NF-A20 5V PWM
to proprietary fan headers. Please first identify the individual leads of the OmniJoin
adaptor and the original fan. The OmniJoin adaptor uses black for ground (GND) and
red for +5V.

The black lead of the adaptor has to be matched with the original GND lead and the
red adaptor cable with the original +5V lead. Many fan cables use the same colours
as the OmniJoin adaptor, but please note that there is no guarantee for this, so make
sure to correctly identify the GND and +5V leads of the original fan.

Please refer to the manual that came with the device or contact the device manufac­turer if in doubt.

OmniJoin adaptor

3M SkotchlokTM connectors

+5V

GND

Connector of the original fan

After you’ve identified the individual leads, please proceed
with the following steps to install the OmniJoin adaptor:

Step 1

Make sure to correctly
identify the GND and
+5V leads of the
original fan!

Cut off the connector of the fan that was originally used in the device. Make sure not
to cut the cable directly at the connector, there should be least a 2-3 cm of cable left:

2-3cm minimum!

Step 2

Then take one of the supplied 3M Skotchlok™ connectors and insert the GND lead of
the original cable and the black lead of the OminJoin adaptor into the two holes of the
Skotchlok™ connector. Make sure that both leads are fully inserted and pushed all the
way back.

Step 3

Then use flat nose pliers to push down the white button of the Skotchlok™ connector.
Make sure that the button is not jammed and pushed all the way down. If the button
is jammed, push it down from both sides of the Skotchlok™ connector using the flat
nose pliers.

Repeat Step 2 and 3 for the +5V lead.

After you’ve fixed the original fan’s cable to the OmniJoin adaptor using the Skotchlok™
connectors, simply connect the NF-A20 5V PWM to the adaptor in order to use it in your
device.

In order to maintain maximum performance, please clean your fans regularly
using a duster, slightly moist tissue or canned air. Please be careful not to use too
much force in order to prevent any damage to the fan. Please don’t use a vacuum
cleaner as this may apply excessive force to the fan.

In order to ensure flawless operation over many years of usage, the NF-A20 5V PWM’s
premium grade SSO2 bearing is fully sealed to prevent the entering of fine dust
particles.

Please note that the fan is not designed to be taken apart by the user. Removing
the impeller from the frame will break the sealing of the bearing and results in
a loss of warranty.

Warranty and Support

Even with high-grade products and strict quality control, the possibility of defects
cannot be eliminated entirely.

Therefore, we aim at providing the highest possible level of reliability and con­venience by offering a warranty period of 6 years and direct, fast and straight­forward RMA service.

Should you encounter any problems with your NF-A20 5V PWM, please don’t
hesitate to contact our support team ([e-mail]).