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Summary of Contents for Califone 5275

  • Page 2 Thus if you take a cassette you have recorded and play it on the The use of an integrated circuit designed specifically for cassette 5275 with the Sync Record Switch on, you will erase the side y o u systems considerably simplifies the circuitry necessary for re- are not listening to unless me small plastic tab at the rear right cord and playback of audio signals in the 5275.
  • Page 3 Sync Out Jack, the Sync Tone does not proceed two halves of the Record/Playback Head. through the 5275, ensuring that a Motor Stop command can not stop the motor when a program tape is being copied. Let’s follow the...
  • Page 6 Page 6 TROUBLESHOOTING THE 5275 TROUBLESHOOTING SECTIONS The Troubleshooting Information on the following pages has been divided into three sections with subsections in order to make it easier for the techni- cian to find the particular section of interest. It is recommended that the fol- lowing outline be used for troubleshooting: Try out the unit, preferably with the customer’s tape, until the malfunc-...
  • Page 7 Page 7 Most of the following tests are concerned with components to outside circuitry, so improper voltages on these pins, if ex- of the IC:PINS 2, replacement connected to ICl. If, at any point, there is a performance ternal pads are good. suggest problem and all external components check good, recheck 3,4,6,8,13,17.18,19,20.
  • Page 8 Page 8 After Step 1, the following text deals directly with the 150 Hz Review the Sync Tone Record and Playback section of the section. Component designations for the 1 kHz section are in General Description; your troubleshooting will be facilitated parenthesis where the two sections have common parts.
  • Page 9 Page 9...
  • Page 10 Proj 1 Drive Comparator D: Proj 2 Drive Comparator RL 1 Projector 1 Advance IC3 TA75324P 1 kHz Filter/Oscillator RL 2 Projector 2 Advance 1 kHz Oscillator Start RL 3 Sync Record 150 Hz Oscillator Start 150 Hz Filter/Oscillator 5275 BLOCK DIAGRAM...