Okii Systems USB Focus Controller User Manual page 14

Controller does not turn on.
Verify condition of batteries and make sure the power switch is set to the "on" position (furthest
away from knob).
Controller does not recognize camera is connected.
Check that the USB cable is securely plugged into both controller and camera. Verify that the
camera works and the battery is charged. Make sure the camera is compatible with the
controller. If it still does not work, disconnect the camera from the controller and turn both off.
Pull the battery from the camera and wait 10 seconds, then replace. Reconnect the camera to
the controller, then turn the camera on, followed by the controller.
Camera displays error or is unresponsive.
Unplug the camera from the controller. Turn both off. Pull the battery from the camera and wait
10 seconds, then replace. Reconnect the camera and controller, then turn the camera on,
followed by the controller.
LED continuously blinks yellow when controller is turned on.
One of the switches is stuck. Press/release each one to find the stuck switch. It may be
necessary to disassemble the controller to fix the stuck switch.
Button presses seem difficult. Executing specific functions that require you to hold a
button don't always work.
This indicates a stuck or defective button insert. Verify that all buttons work by using the switch
test mode built into the disconnected state (yellow LED). Once the problem switch is found, swap
the button insert with another switch location to see if this corrects the issue.
Focus points are not accurate.
Make sure the focus command send rate is not too fast for the specific combination of lens, focus
step size, and focal length (if using a zoom). Changing the command send rate, focus step size,
or focal length after saving focus points can affect the accuracy. Additionally, some lenses have
slightly different increments if the focus moves from near to infinity versus infinity to near, and
will not be accurate regardless of controller settings. This is a limitation of the specific lens.
Focus occasionally pauses or moves unevenly.
Make sure the focus command send rate is not too fast for the specific combination of lens, focus
step size, and focal length (if using a zoom). If the command send rate is too fast, some focus
commands are dropped because the camera is busy executing the previous command. This gap
before the next command is received causes the focus to move unevenly. If you encounter
longer pauses when focus commands are ignored, the most likely cause is that the focus
command send rate is too fast, creating an overflow in the camera's command buffer. You should
keep the focus command send rate below 15 commands per second.
Additional information is available at www.okii.net.
14