Rotel RA-1070 FL Display Control, Troubleshooting, Turning FL Display On/Off, Fuse Replacement

RA-1070Stereo 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:

1Select 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.

2Use the RR-969 τ/υ 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.

3Repeat 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.

10

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.