Introdução
This manual provides detailed instructions for the proper setup, operation, and maintenance of your Technics SA-GX303 AV Control Stereo Receiver. Please read this manual thoroughly before using the unit to ensure optimal performance and longevity. The SA-GX303 is designed to deliver high-quality audio and video control for your home entertainment system.

Figura 1: Frente view of the Technics SA-GX303 AV Control Stereo Receiver, showcasing its display, control knobs, and input buttons.
Principais características
- Potência de saída: 85 W per channel at 8 ohms (stereo).
- Surround Output: 85 W (front), 10 W (rear).
- Resposta de frequência: 7 Hz a 10 kHz.
- Sensibilidade de entrada: 3 mV (MM), 200 mV (line).
- A relação sinal-ruído: 80 dB (MM), 90 dB (line).
- Speaker Load Impedance: 8 ohms (minimum).
- Integrated AV Control for multiple audio and video sources.
- Inclui um controle remoto para facilitar o uso.
Configurar
1. Desembalagem e colocação
Carefully remove the receiver from its packaging. Place the unit on a stable, flat surface with adequate ventilation. Avoid placing it near heat sources or in direct sunlight. Ensure there is enough space around the unit for proper airflow.
2. Conectando as caixas de som
Connect your speakers to the corresponding speaker terminals on the rear panel of the receiver. Ensure correct polarity (+ to + and - to -) for all speakers. The SA-GX303 supports 8-ohm minimum impedance speakers.
3. Conectando componentes de áudio/vídeo
Use the provided AV cables to connect your audio and video sources (e.g., CD player, VCR, TV, game console) to the appropriate input jacks on the rear panel. For optimal sound, connect your turntable to the PHONO input.

Figure 2: Rear panel of the Technics SA-GX303, illustrating the various audio/video input/output ports, speaker terminals, and power connections.
4. Conectando Antenas
Connect the included FM and AM antennas to their respective terminals for radio reception. Extend the FM wire antenna fully for better reception.
5. Conexão de energia
Once all connections are made, plug the receiver's power cord into a suitable AC outlet. The unit is designed for AC 120V, 60Hz power.
Instruções de operação
1. Ligar/desligar
Pressione o PODER Use o botão no painel frontal ou o controle remoto para ligar ou desligar o aparelho. O visor acenderá quando o aparelho estiver ligado.
2. Seleção de entrada
Use os botões de seleção de entrada (por exemplo, videocassete 1, videocassete 2, CD, SINTONIZADOR, TELEFONE) on the front panel or remote to select your desired audio/video source.
3. Controle de volume
Ajuste o volume principal usando o botão grande. VOLUME knob on the right side of the front panel or the volume buttons on the remote control.
4. Sintonizando o rádio
Selecione o SINTONIZADOR input. Use the AFINAÇÃO botão ou o MODO FM / VERIFICAÇÃO DE MEMÓRIA buttons to find radio stations. You can store your favorite stations as presets.
5. Surround Sound Operation
The SA-GX303 features DOLBY SURROUND. Pressione o CERCAR button to activate or deactivate the surround sound mode. Adjust the NÍVEL TRASEIRO knob to balance the rear speaker output.
6. Tone and EQ Controls
Use o LEVEL/TREBLE e CENTER FRED/BASS knobs to adjust the bass and treble levels. The receiver also features a graphic equalizer function with preset EQ modes (EQ-1, EQ-2, EQ-3, EQ-4) and a manual adjustment option.
Manutenção
Limpeza da unidade
To clean the exterior of the receiver, use a soft, dry cloth. For stubborn dirt, slightly dampen the cloth with water and then wipe dry. Do not use abrasive cleaners, waxes, or solvents as they may damage the finish. Ensure the unit is unplugged before cleaning.
Ventilação
Regularly check that the ventilation openings on the top and sides of the unit are not blocked. Proper ventilation is crucial to prevent overheating and ensure long-term performance.
Solução de problemas
Sem energia
- Verifique se o cabo de alimentação está firmemente conectado à tomada e ao receptor.
- Certifique-se de que a tomada elétrica esteja funcionando.
Sem som
- Verifique se a fonte de entrada correta está selecionada.
- Verifique se as conexões das caixas de som estão com a polaridade correta e se estão firmemente encaixadas.
- Certifique-se de que o volume esteja alto e não mudo.
- Confirm that the speakers are connected to the correct speaker terminals (A or B, if applicable).
Fraca Recepção de Rádio
- Adjust the position of the FM wire antenna or AM loop antenna.
- Consider connecting an external antenna for improved reception.
- Check for local interference from other electronic devices.
Controle remoto não funciona
- Verifique e substitua as pilhas do controle remoto.
- Certifique-se de que não haja obstruções entre o controle remoto e o sensor remoto do receptor.
Especificações
| Fabricante | Técnicas |
| Número do modelo | SA-GX303 |
| Potência de saída (estéreo) | 85 W per channel at 8 ohms |
| Surround Output (Front) | 85 W |
| Surround Output (Rear) | 10 W |
| Resposta de frequência | 7 Hz a 70 kHz |
| Distorção harmônica total | 0.05% |
| Dampfator de ing | 20 |
| Input Sensitivity (MM) | 3 mV |
| Input Sensitivity (Line) | 200 mV |
| Signal-to-Noise Ratio (MM) | 80 dB |
| Signal-to-Noise Ratio (Line) | 90 dB |
| Impedância de carga do alto-falante | 8Ω (minimum) |
| Dimensões (C x L x A) | 44.45 x 35.56 x 13.72 cm |
| Peso | 9.09 kg |
| Dispositivos compatíveis | Smartphone, Tablet, PC, Game Console, TV, Amplificador, orador |
Garantia e Suporte
For any questions or issues not covered in this manual, please contact Technics customer support. While specific warranty details are not provided here, please refer to your purchase documentation or the official Technics website for warranty information applicable to your region. Always provide your model number (SA-GX303) when seeking support.
Fabricante: Técnicas
Modelo: SA-GX303





