1. Introducere
Welcome to the instruction manual for your NAD T 748 7.1-Channel Home Theater Receiver. This manual provides essential information for the safe and efficient operation of your new audio-video component. Please read this manual thoroughly before using the receiver and retain it for future reference. It covers setup, operation, maintenance, and troubleshooting to ensure you get the best performance from your unit.
2. Informații importante privind siguranța
Pentru a preveni incendiile, electrocutarea și deteriorarea unității, respectați următoarele măsuri de siguranță:
- Sursa de alimentare: Conectați unitatea doar la o priză de curent alternativ de tipultage specificat pe panoul din spate.
- Ventilare: Asigurați o ventilație adecvată. Nu blocați orificiile de ventilație. Lăsați suficient spațiu în jurul unității pentru o circulație corectă a aerului.
- Apă și umiditate: Nu expuneți unitatea la ploaie sau umezeală. Nu așezați obiecte umplute cu lichide, cum ar fi vaze, pe unitate.
- Căldură: Nu amplasați unitatea în apropierea surselor de căldură, cum ar fi calorifere, registre de căldură, sobe sau alte aparate (inclusiv ampliificatori) care produc căldură.
- curatenie: Deconectați unitatea de la priza de perete înainte de curățare. Folosiți doar o cârpă uscată.
- Service: Nu încercați să reparați singur acest produs. Consultați toate lucrările de service către personalul calificat de service.
3. Configurare
3.1 Despachetarea
Carefully remove the receiver from its packaging. Please check that all accessories are present:
- NAD T 748 Receiver
- Telecomanda cu baterii
- Cablu de alimentare
- Antene FM/AM
- Setup Microphone (for auto calibration)
- Ghid de pornire rapidă
3.2 Conexiuni
Before making any connections, ensure the receiver and all source components are powered off and unplugged from the AC outlet.
3.2.1 Conexiuni difuzoare
Connect your speakers to the corresponding terminals on the rear panel of the T 748. Observe correct polarity (+ to + and - to -) for all speakers. Ensure speaker wires are securely fastened and do not short-circuit.
- Față Stânga/Dreapta: Pentru sunet stereo principal.
- Centru: Pentru dialog.
- Surround Left/Right: For ambient and directional effects.
- Surround Back Left/Right (or Zone 2): For 7.1 channel setup or multi-room audio.
- Pre-Ieșire subwoofer: Conectați la un subwoofer amplificat.
3.2.2 Conexiuni sursă audio/video
Connect your audio and video source components (e.g., Blu-ray player, game console, cable box) to the appropriate input jacks on the receiver.
- Intrări HDMI: For high-definition audio and video. Connect HDMI cables from your sources to the HDMI IN ports.
- Ieșire HDMI: Connect an HDMI cable from the HDMI OUT port to your TV or projector.
- Intrări audio digitale (optice/coaxiale): For digital audio sources without HDMI.
- Analog Audio Inputs (RCA): For older audio components.
3.2.3 Conexiune la alimentare
Once all audio/video and speaker connections are made, connect the supplied power cord to the AC IN jack on the rear panel of the receiver, then plug the other end into a suitable AC wall outlet.
3.3 Configurare inițială
After connecting all components, power on your TV and the receiver.
3.3.1 On-Screen Display (OSD)
Access the receiver's setup menu via the On-Screen Display (OSD) on your TV. Use the remote control to navigate the menus.
3.3.2 Configurarea difuzoarelor
Use the included setup microphone and the receiver's auto-calibration feature to automatically detect speaker configuration, distance, and levels for optimal sound performance. Alternatively, you can manually configure these settings.
3.3.3 Input Assignment
Assign appropriate names and input types to each connected source for easy selection during operation.
4. Instrucțiuni de utilizare
4.1 Operare de bază
- Pornire/Oprire: Apăsați butonul POWER de pe panoul frontal sau de pe telecomandă.
- Controlul volumului: Use the VOLUME knob on the front panel or the VOLUME +/- buttons on the remote control.
- Selectare intrare: Press the desired input button (e.g., HDMI 1, CD, OPTICAL) on the front panel or remote control to switch between sources.
- Moduri de ascultare: Select various listening modes (e.g., Stereo, Dolby Digital, DTS, NAD EARS) using the MODE button on the remote to optimize sound for different content.
4.2 Caracteristici avansate
- Comenzi de ton: Adjust Bass and Treble levels via the setup menu or dedicated buttons on the remote for personalized sound.
- Zone 2 Operation: The T 748 supports a second audio zone. Refer to the full manual for detailed instructions on setting up and controlling Zone 2.
- Actualizări firmware: Periodically check the NAD website for firmware updates to ensure your receiver has the latest features and performance enhancements. Follow the instructions provided with the update carefully.
5. Întreținere
5.1 Curățare
To clean the exterior of the receiver, use a soft, dry cloth. For stubborn marks, lightly dampen the cloth with water or a mild, non-abrasive cleaner. Avoid using harsh chemicals or solvents, as they may damage the finish.
5.2 Depozitare
If you plan to store the receiver for an extended period, disconnect it from the power outlet and all connected components. Store it in a cool, dry place, away from direct sunlight and extreme temperatures.
6. Depanare
If you encounter issues with your NAD T 748 receiver, consult the table below for common problems and their solutions.
| Problemă | Cauza posibila | Soluţie |
|---|---|---|
| Fără putere | Power cord disconnected; power outlet faulty; unit in standby. | Check power cord connection; try a different outlet; press POWER button. |
| Nici un sunet | Intrare incorectă selectată; fire difuzor slăbite; volum prea scăzut; sunet activat. | Select correct input; check speaker connections; increase volume; deactivate mute. |
| Niciun videoclip | Incorrect input selected; HDMI cable loose or faulty; TV input incorrect. | Select correct input; check HDMI cables; ensure TV is on correct HDMI input. |
| Telecomanda nu funcționează | Baterii descărcate; obstrucție între telecomandă și receptor; senzor telecomandă blocat. | Replace batteries; remove obstructions; ensure remote sensor is clear. |
7. Specificații
The following specifications are typical for the NAD T 748 7.1-channel home theater receiver. For precise details, please refer to the official product documentation.
- Putere de ieșire: 7 x 60 Watts (FTC, 8 ohms, all channels driven)
- Raspuns in frecventa: 20Hz - 20kHz (±0.8dB)
- Raport semnal-zgomot: > 92dB (ponderat A)
- Sensibilitate de intrare: 250mV (line input)
- Intrări HDMI: 4
- Ieșiri HDMI: 1
- Intrări audio digitale: 2 optice, 2 coaxial
- Intrări audio analogice: 3 RCA stereo
- Dimensiuni (L x A x A): Aproximativ 17.1 x 6.7 x 15.4 inchi (435 x 170 x 390 mm)
- Greutate: Aproximativ 25 lbs (11.3 kg)
8. Garanție și asistență
NAD products are designed and manufactured to the highest quality standards. This product is covered by a limited warranty. Please refer to the warranty card included with your product or visit the official NAD webpentru termenii și condițiile detaliate de garanție specifice regiunii dumneavoastră.
For technical support, service, or further assistance, please contact your authorized NAD dealer or visit the support section of the official NAD website. Când contactați serviciul de asistență, vă rugăm să aveți la îndemână modelul și numărul de serie al produsului.
