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ACD1 Reference Manual
22
Appendix
Troubleshooting
Symptom Possible causes Response
All scene data saved in
the ACD1 has disap-
peared
The power was turned off while the
ACD1’s data was being saved
Once again synchronize the unit with Amp Editor to transmit
the settings from Amp Editor.
The internal battery has run down Go to “5. Utility” ➝ “Battery” to check the battery status. If the
indication is “Low Battery” or “No Battery,” contact your
Yamaha dealer listed at the end of the ACD1 owner’s manual
to have the battery replaced.
Cannot edit parameters Panel Lock is enabled Change the “5. Utility” ➝ “Panel Operation” setting to Normal,
or use Amp Editor to defeat Panel Operation.
You are attempting to edit a parameter of
an amplifier that is not connected
Connect the amplifier whose settings you want to change.
The corresponding amplifier is not pow-
ered-on
Power-on the amplifier whose settings you want to change.
Power will not turn on,
display will not light
The power cable is not connected prop-
erly
Connect the power cable properly.
The POWER switch is not turned on Turn the POWER switch on.
The backlight setting is “Auto OFF” If you want the LCD backlight to stay lit, turn the “5. Utility” ➝
“LCD Backlight” setting “ON.”
Can’t synchronize with
Amp Editor
A cable is disconnected or broken Check whether a cable might be disconnected or broken.
Amplifier does not oper-
ate as specified
The amplifier was powered-on before the
ACD1
Power-on the equipment so that the ACD1 starts-up before
the amplifiers connected to the ACD1.
Can’t monitor/control an
amplifier
A cable is disconnected or broken Check whether a cable might be disconnected or broken.
A cable exceeds the allowable length Make sure that the cable connected to the [MONITOR/
REMOTE] connector is no longer than 50 meters.
Make sure that the cable connected to the [DATA PORT] con-
nector extends no longer than a total of 500 meters to its last
point.
Make sure that each individual cable between your computer
and the ACD1 is no longer than 100 meters.
In the middle of a daisy-chain there is an
amplifier whose T-switch is ON
Turn off the T-switch for all amplifiers other than the last ampli-
fier.
Specifications
Scene Memory 50 scenes per amplifier
Number of amplifiers
that can be connected
Via the DATA PORT connector Up to 32 units
Via the MONITOR/REMOTE
connector
Up to 8 units
Display 16 characters × 2 lines backlit LCD
Power Requirements 100 V, 50 Hz/60 Hz
Power Consumption 15 W
Dimensions (W × H × D) 480 × 44 × 362 mm
Weight 4.0 kg
Operating temperature range 0 °C–40 °C
Storage temperature range -20 °C–60 °C
AC Cable Length 250 cm
Accessories
AC power cord, Euroblock plug (16P), Owner’s Manual, Rubber feet × 4