AP20 Installation and Operating Guide Page 110
AP20 Installation & Operating Guide Document # 9301H39200 Ver. 1.25
The current fader and mute status is returned by the AP20 after each fader or mute command.
Linked AP20 - When two AP20s are being used together to control one auditorium the serial
automation port will match:
o fader command - volume level on both AP20s will be the same
o format selection – the selected format will match on both AP20 as long as the format names
are the same (note that only the format names must match).
5.0 Maintenance and Troubleshooting
Check the Datasat Digital Entertainment Online Support site, at www.datasatdigital.com, for the latest
information on maintenance, troubleshooting, and AP20 software versions.
5.1 Routine Maintenance
We recommend that every six months you vacuum the outside of the unit to remove dust, especially
around ventilation holes.
Clean the touch screen as needed with a soft cloth and non-abrasive cleaning solution suitable for
cleaning LCD screens.
5.2 Troubleshooting
The following table provides troubleshooting data for the AP20.
PROBLEM SOLUTION
The touch screen display is off-
centered
See Touch Screen Positioning, below
The Home screen displays NoLock See NoLock below
Fader not functioning See Fader Not Functioning below
Touch Screen Positioning
The AP20 LCD display position has been configured at the factory. If, for some reason, you should need
to recalibrate the location of the screen, follow the steps outlined below (these steps are much like
opening a combination padlock):
1. Cycle the power on the AP20 from the rear panel switch. You will only be able to enter
touch screen calibration mode for 2 minutes after recycling the power.
2. From the Home screen, rotate the control knob counter-clockwise at least one full
revolution.
3. Rotate the knob clockwise one click. (You will feel and hear the click and see the fader
level increase by one decimal value.)
4. Rotate the knob counter-clockwise eight clicks, listening for the clicks as you turn.
5. Rotate the knob clockwise one click.
6. Rotate the knob counter-clockwise two clicks. (You are now in calibration mode.)
7. The display will go black, and a small crosshair in a box will appear in the upper corner.
Using a fine-tipped stylus, touch as close as you can to the center of the crosshair. The
cross hair will move to a new corner. Do not use a pencil or pen tip as this may cause
damage to the touch screen surface. Use a non metallic stylus or similar tool for calibration.
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