ROTEL RA-1070 - Manual (Page 10)

10 RA-1070 Stereo Integrated Amplifier
FL Display Control
Turning FL Display On/Off
To turn the front panel FL Display on or off,
press the Display
button on the RR-969.
When the display is set to off, the Listening
Selector Display and Recording Selector Dis-
play will light for 5 seconds when a new source
is selected.
Customizing FL Display
You can program the RA-1070 to display
custom names, up to 5 characters long, in the
Listening and Recording Selection Displays.
For example, if the Aux 1 input was connected
to a Digital Satelite Dish, you could program
it to RA-1070 to display “DSS” when the Aux
1 input is selected.
Example:
1 Select Aux 1 as the listening input so AUX
1 appears in the display. Press and hold
the Menu/OSD
button until the char-
acters in the display change to blinking solid
blocks.
2 Use the RR-969 / buttons to scroll
through the character set. (See page 3 of
the RR-969 manual for a listing of the char-
acter set.) When the character you want
is displayed, press Enter
to confirm it
and go to the next character.
3 Repeat the previous step to select the re-
maining characters. After the last charac-
ter is selected and confirmed the new name
is saved automatically.
Once the Listening input display is custom-
ized, the new name also appears when that
input is selected as the Recording input. (The
exception is the Tape 2 input since it cannot
be selected as the recording source.)
When an input that has a customized name
is selected, the original input name is displayed
for 2 seconds, before the customized name
is displayed.
Clearing FL Display
Customization
To clear all customized displays, turn the
RA-1070 on. Then press the Listening Selec-
tor Phono button together with the Recording
Selector Off button. This will return all displays
to their original settings.
Protection Circuitry
The RA-1070 has both thermal and over-cur-
rent protection circuitry that protects the am-
plifier against damage in the event of extreme
or faulty operating conditions. The protection
circuits are independent of the audio signal
and have no impact on sonic performance.
Instead, the protection circuits monitor the tem-
perature of the output devices and shut down
the amplifier if temperatures exceed safe limits.
Most likely, you will never see this protection
circuitry in action. However, should a faulty
condition arise, the amplifier will stop play-
ing and the LED indicator on the front panel
will light up.
If this happens, turn the amplifier off. Let it
cool down for several minutes, and attempt
to identify and correct the problem that caused
the protection circuitry to engage. When you
turn the amplifier back on, the protection circuit
will automatically reset and the indicator LED
should go out.
In most cases, the protection circuitry activates
because of a fault condition such as shorted
speaker wires, or inadequate ventilation lead-
ing to an overheating condition. In very rare
cases, highly reactive or extremely low im-
pedance speaker loads could cause the pro-
tection circuit to engage.
If the protection circuitry triggers repeatedly
and you are unable to isolate and correct the
faulty condition, contact your authorized Rotel
dealer for assistance in troubleshooting.
Troubleshooting
Most difficulties in audio systems are the re-
sult of incorrect connections, or improper
control settings. If you encounter problems,
isolate the area of the difficulty, check the con-
trol settings, determine the cause of the fault
and make the necessary changes. If you are
unable to get sound from the RA-1070, re-
fer to the suggestions for the following con-
ditions:
Power Indicator Is Not Lit
The Power Indicator should be lit whenever
the RA-1070 is plugged into the wall power
outlet. If it does not light, test the power out-
let with another electrical device, such as a
lamp. Be sure the power outlet being used is
not controlled by a switch that has been turned
off.
Fuse Replacement
If another electrical device works when plugged
into the power outlet, but the Standby Indi-
cator still will not light when the RA-1070 is
plugged into the wall outlet, it indicates that
the internal power fuse may have blown. If
you believe this has happened, contact your
authorized Rotel dealer to get the fuse re-
placed.
No Sound
Check the signal source to see if it is functioning
properly. Make sure the cables from the sig-
nal source to the RA-1070 inputs are con-
nected properly. Be sure the Listening Selec-
tor is set to the proper input. Check the wir-
ing between the RA-1070 and the speakers.
Protection Indicator Is Lit
The front panel indicator lights when the
RA-1070 protection circuits have shut off the
amplifier. Typically, this occurs only when the
ventilation openings are blocked, when there
is faulty speaker wiring, or after a period of
extreme use. Turn off the system and wait for
the amp to cool. Then push the front panel
power switch in and out to reset the protec-
tion devices. If the problem is not corrected
or reoccurs, there is a problem with the sys-
tem or the amplifier itself.