Datasat AP20 Installation And Operating Manual page 14

1.5 Troubleshooting (Operation)
The following table provides troubleshooting data for the AP20.
PROBLEM
AP20 will not power ON
AP20 front panel display is too
dim
No sound in auditorium
Volume is too low or high in the
auditorium
Volume is too low or high in the
booth
No sound in booth
Wrong sound in auditorium
AP20 Installation & Operating Guide
AP20 Installation and Operating Guide
SOLUTION
Press and release the power button on the front panel. If the
unit will not power up, be sure the rear panel power switch is
ON and the unit is plugged into a working AC outlet protected
by a surge protector. See Powering ON the AP20 Processor,
page 16.
If the AP20 is mounted in a rack and a breaker is used for the
rack, make sure the breaker is ON.
Verify the surge protector is powered and is working.
Try changing the AP20 power cord.
If power is getting to the AP20 but it still will not power ON,
maybe the fuse above the AC In connector (on the rear panel)
is blown. Call a theater technician to check it.
The front panel display automatically dims when not touched for
a few seconds. Gently touch the display screen to brighten it.
On the front panel display, verify the Mute button is not muted.
If it is muted, touch it to unmute it.
Be sure the fader level is not zero (0) or red. If it is zero, then
turn the knob to increase the volume. If it is red, then unmute
the AP20 by touching the Muted button.
Verify the AP20 is in the correct format.
Turn the fader knob to achieve proper volume.
Touch the Monitor button to open the Monitor window, then
touch the + or – to adjust the monitor volume.
Verify the Monitor is not muted (red). To unmute, touch the
Monitor button, then touch the red Muted button.
Verify a powered speaker is connected to the AP20 rear panel.
Verify the speaker's power is ON.
Adjust the monitor volume (see previous entry).
Verify the AP20 is in correct format. (The current format is
highlighted in the bottom row of the display.) Touch a different
format to select. If the format you want is not listed, it has not
been set up – contact your theater technician.
Document # 9301H39200 Ver. 1.1
Page 21