Protection Indicator; Troubleshooting; Power Indicator Is Not Lit; Fuse Replacement - Rotel RA-04 SE Manual De Instrucciones

English

Protection Indicator

The RA-04 SE has both thermal and over-current protection circuitry that
protects the amplifier 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 temperature 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 playing 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 leading to an
overheating condition. In very rare cases, highly reactive or extremely low
impedance speaker loads could cause the protection 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 result of incorrect connections,
or improper control settings. If you encounter problems, isolate the area
of the difficulty, check the control settings, determine the cause of the fault
and make the necessary changes. If you are unable to get sound from the
RA-04 SE, refer to the suggestions for the following conditions:

Power Indicator Is Not Lit

The Power Indicator and the basic items in the Display window should be
lit whenever the RA-04 SE is plugged into the wall power outlet and the
Power button is pushed in.If it does not light, test the power outlet 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 Power Indicator of the RA-04 SE does not light when plugged into
the same outlet and the Power Switch is pushed in, 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 replaced.

No Sound

Check the signal source to see if it is functioning properly. Make sure
the cables from the signal source to the RA-04 SE inputs are connected
properly. Be sure the Listening Selector is set to the proper input. Check
the wiring between the RA-04 SE and the speakers.
3
Specifications
Continuous Power Output
(20-20 kHz, < 0.03%, 8 ohms)
Total Harmonic Distortion (20Hz-20kHz)
Intermodulation Distortion (60 Hz : 7 kHz, 4:1)
Frequency Response
Phone input
Line Level Inputs
Damping Factor (20-20,000 Hz, 8 ohms)
Input Sensitivity / Impedance
Phone input
Line Level Inputs
Input Overload
Phone input
Line Level Inputs
Premp Output / Impedance
Tone Controls - Bass / Treble
Signal to Noise Ratio (IHF "A" weighted)
Phone input
Line Level Inputs
Power Requirements
Power Consumption
Dimensions (W, H, D)
Panel Height
Weight (net)
All specifications are accurate at the time of printing.
Rotel reserves the right to make improvements without notice.
Rotel and the Rotel HiFi logo are registered trademarks of
The Rotel Co, Ltd., Tokyo, Japan.
9
40 watts/ch
< 0.03% at rated power,
1/2 power or 1 watt
< 0.03% at rated power,
1/2 power or 1 watt
20Hz-15kHz, ±0.3dB
10Hz-40kHz, ±1dB
180
2.5mV / 47 kOhms
150 mV / 24 kOhms
180mV
5V
1V / 470 Ohms
±6 dB at 100Hz / 10kHz
80 dB
100 dB
230 Volts, 50 Hz
220 Watts
17 1 / " x 2 7 / " x 13 1 / "
8 8 2
435 x 72 x 342 mm
60 mm / 2 3 / "
8
5.9 kg, 13lbs