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Audiovox MS-407 Owner's Manual

Am/fm stereo radio with auto reverse cassette player
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R
Owner's Manual
AM/FM STEREO RADIO
WITH AUTO REVERSE CASSETTE PLAYER
Designed Specifically for
the Marine and RV Environment
MS-407

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Summary of Contents for Audiovox MS-407

  • Page 1 Owner’s Manual AM/FM STEREO RADIO WITH AUTO REVERSE CASSETTE PLAYER Designed Specifically for the Marine and RV Environment MS-407...
  • Page 2 FACEPLATE CONTROLS DIAGRAM (Figure 1)
  • Page 3 Control Description- See Figure 1 POWER ON/OFF VOLUME Rotate the VOL/PWR knob to turn the power and increase the sound level. FADER CONTROL Rotate the Fader Control clockwise to shift the sound output towards the rear and counter- clockwise to shift the sound output towards the front speakers. The center indent position is for balancing the front and rear speaker output.
  • Page 4 PROGRAM INDICATOR This indicator shows which direction the tape is being played, or direction of tape movement (Fast Forward or Rewind). LOCAL/DISTANT SELECTOR This switch allows maximum reception in both weak and strong AM/FM signal areas. Press this button to the “In” position for distant (or weak) signals reception. Press switch to the “Out” position for local (or strong) signal reception.
  • Page 5 Wiring Diagram Figure 2 MS-407 MS-407 MS-407...
  • Page 6 AM ANTENNA TRIMMER ADJUSTMENT The antenna trimmer can be reached through the small hole inside the cassette door (See diagram below) Tune radio to a weak station between 1200 and 1400 KHz AM. (If you cannot find a weak station in this range, tune to any strong station, and adjust tuning slightly off station). Adjust antenna trimmer for maximum output.

  • Page 7: Care And Maintenance

    CARE & MAINTENANCE SPECIFICATIONS Cassette Size: 7” (W) x 2” (H) x 6 5/8” (D) Always check that the tape is tightly wound inside the take-up 178mm x 50mm x 168mm spool on the cassette. If the tape is loose, wind it with a six-sided Operating Voltage: 12V DC, Negative ground pencil.
  • Page 8 TROUBLESHOOTING AM/FM RADIOS Symptom Cause Possible Solution No Power No 12VDC Check circuit fuse at source Check in-line fuse on power lead (wall mount units are located in rear cabinet) Power lead disconnected Ground connection Power indicated; No audio No 12VDC to memory lead Circuit fuse at source output (electronically tuned units only)
  • Page 9 Only one channel (right or left Radio Balance Check radio function side) Speaker Disconnected Check speaker connection at radio and/or speaker Speaker lead shorted or Check speaker wiring continuity grounded to ground w/tester or meter Popping in one or both channels Speaker wiring shorted or Leads from speaker cone to positive lead grounded...

  • Page 10: Application Notes

    APPLICATION NOTES AMPLIFIED AM/FM ANTENNA AM/FM RECEPTION A popular second antenna that can be used is Many vans and RV’s have more than one our AB-100 amplified AM/FM antenna. It is small AM/FM radio. The best way to insure good reception and has a retractable mast that can be mounted is to supply a separate antenna for each radio.

  • Page 11: Antenna Cable

    FM RECEPTION Special circuitry in electronic tuned radios or AM trimmers in mechanically tuned radios, FM reception can be received with a very make up for some of this difference in optimum limited antenna and strong local FM stations can mast length for AM reception.
  • Page 12 APPLICATION NOTES This note will discuss DC Power sources and how Voltage they relate to 12 volt DC audio/video products. The voltage of a fully charged battery (engine not running) is approximately 12.5 VDC. Once a load DC (Direct Current) Power (items being powered represent the “load”) is A large number of our products are designed for applied, the voltage will drop.
  • Page 13 This AC ripple is filtered by the coach battery when connected into the circuit, but when the battery is removed or disconnected the Audiovox Specialized Applications, LLC amount of AC ripple can create major problems 23319 Cooper Drive for audio and video products. Noise may result Elkhart, IN 46514 and the line fuse may fail.

  • Page 14: Accessory List

    HP-375 Studio Quality Headphones HP375 Unlike household electronics, all of our products have been specifically designed and tested for the mobile environment and are only available through ASA. To order any of these products, please contact Audiovox Specialized Applications at www.asaelectronics.com or 800-688-3135.

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