HIKVISION PCI-T18Z2S Turret Camera Focus issues

I purchased 4 HIKVISION PCI-T18Z2S turret cameras, and two have focus issues.
One is entirely blurry, and one is slightly blurry, especially on the one side.
Is there a method to set focus?
I can't seem to find a service manual anywhere.

Any help would be appreciated.
 
They do seem to have autofocus, try to use manual zoom out/in a bit to see if the autofocus will reinitialize.

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I had problem with autofocus few times. Either an object in between that is taking that Focus away or broken autofocus.