Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your NAD C427 AM/FM Tuner. Please read this manual thoroughly before using the product to ensure proper functionality and to maximize your listening experience. Keep this manual for future reference.
Safety Information
CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN.
To reduce the risk of electric shock, do not remove the cover (or back). No user-serviceable parts are inside. Refer servicing to qualified service personnel. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
WARNING: To prevent fire or shock hazard, do not expose this appliance to rain or moisture.
Setup
Unpacking
Carefully remove the NAD C427 AM/FM Tuner from its packaging. Ensure all included components are present:
- NAD C427 AM/FM Tuner unit
- Remote Control
- 24-position rotary encoder knob (pre-installed or separate, depending on model revision)
- Power Cord
- AM Loop Antenna
- FM Wire Antenna
Placement
Place the tuner on a stable, level surface away from direct sunlight, heat sources, and excessive dust. Ensure adequate ventilation around the unit.
Connections
Refer to the rear panel diagram below for connection points.
Description of Rear Panel Connections:
- ANTENNA (FM, GND, AM): Connect your FM antenna to the 'FM' coaxial input. For AM reception, connect the supplied AM loop antenna to the 'AM' terminals. Ensure the 'GND' terminal is connected to a good ground if experiencing interference.
- AUDIO OUT (L/R RCA): Connect these RCA outputs to an available analog input on your amplifier or receiver (e.g., 'Tuner In', 'Aux In'). Use high-quality RCA cables for optimal sound.
- RS232: This port is for advanced control systems and firmware updates. Consult a professional installer for its use.
- IR IN: Connect an external IR receiver here if the tuner is placed in a cabinet or where the remote control's line of sight is obstructed.
- +12V TRIGGER IN: This input allows the C427 to be turned on or off by another component with a 12V trigger output.
- POWER INLET (100-240V~ 50/60Hz): Connect the supplied AC power cord here. Ensure the voltage matches your local power supply.
- POWER SWITCH (ON/OFF): The main power switch for the unit.
Initial Power On
After all connections are made, plug the power cord into a wall outlet. Flip the main POWER switch on the rear panel to the 'ON' position. The front panel display should illuminate.
Operating
Basic Tuning
- Selecting Band: Use the 'AM/FM' button on the front panel or remote to switch between AM and FM bands.
- Manual Tuning: Rotate the tuning knob on the front panel or use the 'TUNE +/-' buttons on the remote to manually adjust the frequency.
- Auto Scan: Press and hold the 'TUNE +/-' buttons or use the 'SCAN' function (if available on remote) to automatically scan for the next strong station.
Preset Stations
The C427 allows you to store your favorite stations as presets for quick access.
- Storing Presets: Tune to the desired station. Press and hold the 'MEMORY' button (or similar, refer to remote layout) until the display flashes. Use the tuning knob or number buttons to select a preset number, then press 'MEMORY' again to confirm.
- Recalling Presets: Use the 'PRESET +/-' buttons or the numeric keypad on the remote to select a stored preset.
Remote Control
The included remote control provides full functionality for the C427. Familiarize yourself with its buttons for power, band selection, tuning, presets, and display options.
Maintenance
Cleaning
To clean the unit, use a soft, dry cloth. For stubborn marks, lightly dampen the cloth with water. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the finish.
General Care
- Ensure proper ventilation to prevent overheating.
- Keep the unit away from liquids and moisture.
- Avoid placing heavy objects on top of the tuner.
- If the unit will not be used for an extended period, disconnect it from the power outlet.
Troubleshooting
If you encounter issues with your NAD C427, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord not connected; Rear power switch off; Wall outlet faulty. | Check power cord connection; Ensure rear power switch is ON; Test wall outlet with another device. |
| No sound | Audio cables not connected; Amplifier input not selected; Tuner volume too low (if applicable). | Verify RCA audio cable connections to amplifier; Select correct input on amplifier; Adjust amplifier volume. |
| Poor FM/AM reception | Antenna not connected or poorly positioned; Local interference. | Connect FM/AM antennas securely; Adjust antenna position for best reception; Try an external antenna; Minimize nearby electronic devices. |
| Remote control not working | Batteries depleted; Obstruction between remote and tuner; IR sensor blocked. | Replace remote batteries; Ensure clear line of sight to tuner's IR sensor; Check if IR IN is being used with an external sensor. |
If the problem persists after attempting these solutions, please contact NAD customer support or your authorized dealer.
Specifications
| Feature | Detail |
|---|---|
| Model | C 427 AM FM Tuner |
| Product Dimensions (W x H x D) | 17.13 x 3.38 x 12.25 inches (43.5 x 8.6 x 31.1 cm) |
| Item Weight | 10.12 pounds (4.6 Kilograms) |
| Power Rating | 100-240V~ 50/60Hz, 25W |
| Connectivity Technology | Wired |
| Tuner Technology | AM/FM |
| Radio Bands Supported | AM, FM |
| Included Components | Remote Control, 24 position rotary encoder knob |
| Frequency (FM) | Up to 108 MHz (typical FM band) |
| Manufacturer | NAD |
| Date First Available | November 24, 2016 |
Note: Specifications are subject to change without notice.
Warranty Information
NAD products are designed and manufactured to the highest quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official NAD Electronics website. Keep your proof of purchase for warranty claims.
Customer Support
Should you require technical assistance, service, or have any questions regarding your NAD C427 AM/FM Tuner, please contact your authorized NAD dealer or visit the official NAD Electronics support website for contact information and resources.