Naxa NPB-431 - User Manual

This document provides the instruction manual for the Naxa NPB-431 Portable CD/MP3/USB Player with FM PLL Radio, a versatile audio device designed for portable use.

Function Description:

The Naxa NPB-431 is a portable audio system that combines multiple playback options, including a CD player, MP3 player, USB player, and an FM PLL radio. It is designed to provide a comprehensive audio experience with various input and output options. The device features a built-in equalizer system to customize sound tones and supports both AC and battery operation for flexibility in use.

Important Technical Specifications:

General:

• Power Requirement: AC 110/220V-50/60Hz (Selectable) or DC 12V UM-1 "D" SIZE x 8PCS batteries.
• Power Consumption: AC 25 Watts.
• Weight: Approximately 3.8kg.
• Unit Dimension: Approximately 172mm(L) x 229mm(H) x 230mm(W).
• Dimension of Each Speaker: Approximately 138mm(L) x 182mm(H) x 227mm(W).
• Operation Temperature: +5 °C to +35 °C.

Receiver Section (Radio):

• Receiving Bands: FM.
• Tuning Range: FM 87.5-108 MHz.

Compact Disc Section:

• Optical Pickup: 3-Beam Laser.
• Frequency Response: 100Hz - 16KHz.
• Disc Compatibility: Plays all digital audio CD/MP3/WMA discs, finalized digital audio CD-Recordable (CD-R) discs, and finalized digital audio CD-Rewritable (CD-RW) discs.
• Laser Classification: Class 1 Laser Product.

Cassette Section:

• Recording System: 2 Tracks 2 Channels (Stereo).
• Biasing System: DC bias.
• Frequency Response: 125-6.3 KHz.
• Wow And Flutter: 0.35% WRMS (JIS).

Audio Section:

• Power Output: Maximum 4 Watts x 2.
• Headphone Impedance: 32 Ohms.

Accessories:

• Instruction Booklet (1)
• Remote Control (1)
• AC Cord (1)

Usage Features:

Power Supply:

• AC Operation: Plug the AC line cord into a normal household mains outlet. For dual voltage versions, ensure the AC voltage selector (located on the bottom of the unit) is set to the local voltage. Batteries are automatically disconnected during AC operation.
• Battery Operation: Insert 8 UM-1 (D size) batteries into the battery compartment, observing correct polarity. Alkaline batteries are recommended.

Basic Functionality:

• Speaker Connection: Before switching on, connect the two speakers to their corresponding jacks on the back panel, ensuring left and right channels are correctly matched ("L" jack for left, "R" jack for right).
• Switching On/Off: The unit is in standby mode when the STANDBY indicator is illuminated. Press the STANDBY button on the unit or remote control to switch it on. Use the FUNCTION button to select CD, USB, AUX, or FM mode.
• Volume Adjustment: Rotate the Volume Knob on the unit or use the VOL.+/VOL.- buttons on the remote control.
• Mute Function: Press the MUTE button on the remote control to temporarily silence the sound; press again to restore it.
• Headphones: For private listening, plug 3.5mm headphones/earphones (not included) into the PHONES jack. Caution: Prolonged listening at high volumes can cause hearing damage.
• Built-in Equalizer System: Press the EQ button on the main unit or remote control to select different music styles (sound tones): FLA (Flat), ROC (Rock), POP (Pop), JAS (Jazz), and CLA (Classic).

Radio Operation:

• Tuning: Press the FUNCTION button to select RADIO mode. Use the /TUN.+ or /TUN.- buttons to tune to desired stations. Press and hold these buttons for auto-scan to find strong signals.
• FM Stereo Indicator: Illuminates when receiving an FM stereo program.
• Antenna: Extend the FM TELESCOPIC ANTENNA to its full length for optimal FM reception.
• Auto Scan (Search): Press and hold the button for about 2 seconds to initiate an auto scan and program strong signals. The unit will broadcast the first programmed station (P01) after scanning. Use MEM.+ or MEM.- to navigate programmed stations.
• Memory Operation: Pre-store up to 30 FM radio stations. Tune to a desired station, press PROG./MEM., use MEM.+ or MEM.- to select a storage location (P01, P02, etc.), and press PROG./MEM. again to save. Use MEM.+ or MEM.- to listen to stored stations.

CD/MP3 Operation:

• Loading a Disc: Press the FUNCTION button to select CD mode. Open the CD door (display shows "OP"). Place an audio CD/MP3 disc with the label side facing up. Close the CD door. The total number of tracks will appear.
• Playback: Press PLAY/PAUSE to start playback (track 1, " " appears). Press PLAY/PAUSE again to pause (play time flashes). Press STOP to end playback.
• Selecting Tracks: Use /TUN+ or /TUN- buttons in stop or play mode to select desired tracks. For tracks exceeding 10 (MP3 only), use +10/FOLD.+ or -10/FOLD.- buttons, then /TUN+ or /TUN-.
• Searching Passages: During playback, press and hold /TUN+ or /TUN- to scan through the current track at high speed; release to resume playback.
• Selecting Folders (MP3 only): Press and hold +10/FOLD.+ or -10/FOLD.- to skip to the next/previous folder.
• Repeat Functions:
  • Repeat Single Track: Press P-MODE once during play; "REPEAT" flashes.
  • Repeat All Tracks: Press P-MODE until "REPEAT" shows steadily.
  • Repeat Folder (MP3 only): Press P-MODE until "REPEAT" and the local folder number (e.g., "003") show steadily.
  • Cancel repeat by pressing P-MODE until "REPEAT" disappears.
• Random Play: Press P-MODE repeatedly until "RANDOM" appears. Playback will start from the next track randomly. Cancel by pressing P-MODE until "RANDOM" disappears.
• Program Tracks: In stop mode, press PROG./MEM. (PROG flashes, P01 shows). Use /TUN+ or /TUN- to select a track, then PROG./MEM. to store. Repeat for up to 20 CD tracks or 99 MP3 tracks. Press PLAY/PAUSE to start program playback.
• Erase Program: In stop mode, press STOP (PROG indicator disappears) or open the CD compartment lid.

USB Operation:

• Selecting Mode: Press the FUNCTION button to select USB mode.
• Connecting USB Device: Insert a USB Flash Disk Device into the USB PORT.
• Playback: If readable, the display shows "USB" and the total number of tracks. Playback starts from track 1.
• Stop Playback: Press STOP.
• Features: Supports repeat play (repeat-1 / repeat-folder / repeat-all), program play, and random play, similar to CD operation.
• Caution: Avoid using USB extension cables to prevent harmful interference. In case of malfunction due to electrostatic discharge, reset the product (reconnect power source).

AUX-IN Operation:

• Selecting Mode: Press the FUNCTION button to select AUX function.
• Connecting External Source: Connect an audio cable (not included) from the external audio source's AUDIO OUT jack to the unit's AUX-IN jack (3.5MM).
• Playback: Adjust the unit's volume and press PLAY on the external audio source.

Maintenance Features:

• General Care: Avoid installing the unit in direct sunlight, near heat sources, in constantly vibrating areas, unventilated or dusty places, or humid/moist locations.
• Power Cord Protection: Protect the power cord from being walked on or pinched, especially at plugs and where it exits the apparatus.
• Lightning/Long Periods of Inactivity: Unplug the apparatus during lightning storms or when unused for extended periods.
• Ventilation: Do not block any ventilation openings.
• Servicing: Refer all servicing to qualified personnel.
• Battery Replacement (Remote): If remote operation is unsatisfactory, replace the two "AAA" batteries.
• Troubleshooting: If issues persist, consult the manual or visit www.naxa.com for support. Contact Naxa Technical Support for additional assistance.
• FCC Notice: The device complies with FCC rules, designed to prevent harmful interference. If interference occurs, try reorienting the receiving antenna, increasing separation between equipment and receiver, connecting to a different circuit, or consulting a dealer/radio/TV technician.