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Фрагмент инструкции
POWER ON/OFF VOLUME Rotate the VOL/PWR knob to turn the power and increase the sound level. 2. FADER CONTROL Rotate the Fader Control clockwise to shift the sound output towards the rear and counterclockwise to shift the sound output towards the front speakers. The center indent position is for balancing the front and rear speaker output. 3. EJECT BUTTON Press this button to stop the tape playback and resume radio operation; at the same time cassette tape will be ejected from the cassette slot. 4. WEATHER BAND CHANNEL INDICATORS These indicators show which channel is selected. Whichever channel is selected the corresponding light will illuminate. The last channel selected will be kept in memory unless loss of power occurs. 5. CASSETTE COMPARTMENT Insert a tape into the cassette compartment. The unit will automatically switch from radio to tape operation. Note: When the tape is being played, the weather band function will not operate. 6. FAST FORWARD/REWIND BUTTON Push >> or << to Fast Forward or Rewind and push down both buttons << and >> together to play the other side of the tape. 7. TUNING KNOB Rotate the tuning knob clockwise or counter-clockwise to select the desired broadcasting station. 3 8. PROGRAM INDICATOR This indicator shows which direction the tape is being played, or direction of tape movement (Fast Forward or Rewind). 9. 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. 10. AM/FM BAND SELECTOR Press to the “In” position for the FM band, and press switch to the “Out” position for the AM band. 11. WEATHER BAND CHANNEL SELECTOR There are three weather band channels to choose from. Press one of them to select desired weather band channel. 12. WEATHER BAND SELECTOR Push in to activate weather band reception and switch should be out for normal radio reception. 13. TONE SWITCH Rotate the control clockwise to emphasize high tones. Turn in counter-clockwise direction to emphasize low tones. 14. BALANCE CONTROL Rotate the Balance Control clockwise or counter-clockwise to balance the sound output level between the left and right speakers. 4 Wiring Diagram Figure 2 MS-407 5 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. 6 CARE & MAINTENANCE Cassette Always check that the tape is tightly wound inside the take-up spool on the cassette. If the tape is loose, wind it with a six-sided pencil. Never use C-120 (120 minute) cassettes in this player. Never use cassette player when the vehicle temperature is near or below freezing. Cleaning of Tape Head & Capstan Since tapes contain oxides, you will find a black residue builds up on the head and drive capstan (inside cassette door). These residues should be cleaned after 50-100 hours of accumulated tape operation. You can use a cassette cleaning cartridge available whereever stereos are sold. DE-MAGNITIZING The movement of the magnetic tape across the tape head and metal parts causes a magnetic field to develop. We recommend you have the tape player demagnetized at least twice annually. You can purchase an inexpensive tape head demagnetizing tool to do this yourself. SPECIFICATIONS Size: Operating Voltage: Output Power: Output Wiring: Output Impedance: Tuning range: Sensitivity: FM Stereo Separation: Frequency Response: Wow & Flutter: 7 7” (W) x 2” (H) x 6 5/8” (D) 178mm x 50mm x 168mm 12V DC, Negative ground 50 Watts max. Stereo power Floating ground type designed for 4 speaker use. May also be used with 2 speakers. Compatible with 4 or 8 W speakers (AM) 530 – 1710 KHz (FM) 88 – 108 MHz (Weather band) Ch 1- 162.550 MHz Ch 2- 162.400 MHz Ch 3- 162.475 KHz (AM) less than 25uV (FM) less than 5uV More than 23 dB 50 –10000 Hz Less than 0.3% 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 output No 12VDC to memory lead (electronically tuned units only) Circuit fuse at source In-line memory lead fuse Speaker Output shorted Check continuity of speaker leads to ground Speaker out cross channeled Check for proper speaker wiring. Note: Radios have a sticker on them explaining wiring color code. 8 APPLICATION NOTES AM/FM RECEPTION Many vans and RV’s have more than one AM/FM radio. The best way to insure good reception is to supply a separate antenna for each radio. Other options available to supply adequate AM/FM reception to these radios are listed below, along wi...