|Sencore SG165 Analyzer|
|Description||AM- FM STEREO ANALYZER|
INTRODUCTION The AM/FM/FM MPX receiver represents the fastest growing segment of the home entertainment electronics market. Many consumers consider the sound system, whether component or console, their first purchase after the essentials of food and shelter. These consumers demand, and are willing to pay relatively large sums for, quality reproduction of their favorite music. When this equipment requires service they expect the repaired unit to meet the same exacting specifications it did when new. The technician who attempts to test, troubleshoot and align a stereo system, costing in some cases thousands of dollars, without proper equipment has a difficult task ahead of him. This need for a reasonably priced stereo analyzer to adequately service and test stereo units prompted Sencore to engineer the SGI65 complete AM/FM/Stereo Analyzer. The SG165, with its accurate temperature compensated solid state circuitry, eliminates the guess work by providing known accurate signals needed for full troubleshooting and performance testing from antenna to speaker terminals. FEATURES * Complete RF coverage of the AM and FM bands, with band edge limits as recommended by receiver manufacturers. * Troubleshooting signals for the FM IF, AM IF, MPX, and audio circuits. * Crystal controlled as well as swept 10.7MHz with post injection crystal controlled 10.7MHz marker, and lOOKHz limit markers for FM IF alignment. * Tight shielding; no RF leakage to cause problems. * 19KHz phase and frequency permanently locked with exclusive Sencore (patent pending) circuit. * Built in 4, 8, 16, and 32 ohm high wattage dummy loads to eliminate the annoying howl in the shop. * Meters calibrated in db of separation and wattage output up to 100 watts full scale. Compensated to read accurate power output for any speaker load resistor. Calibrated RF output for making the all important IHF sensitivity check. Complete with all cables and adapters including dummy auto antenna connector.
These manuals are available for the above equipment:
|Sencore -- SG165 -- Service and User Manual|
|Manual Type||Service and User Manual|
|Size||31.91 Mbytes (33461195 Bytes)|
|Quality||Scanned document, all readable.|
|Upload date||12 June 2016|
|Downloads||339 since 12 June 2016|
SENCORE SAFETY REMINDERS Inside front cover SG165 FRONT PANEL Page 2 DESCRIPTION Page 3 INTRODUCTION Page 3 FEATURES Page 3 SPECIFICATIONS Page 3 CONTROLS Page 5 CONNECTIONS Page 7 OPERATION Page 8 SPEAKER LOAD AND POWER RANGE Page 8 STEREO MPX MODULATION Page 9 FMRF Page 9 10.7MHz IF Page 10 10.7MHz XTAL CONTROLLED Page 11 10.7MHz SWEEP & MARKERS Page 11 MPX SIGNAL Page 12 SCA 67KHz Page 13 AM RF Page 13 AM IF Page 14 400Hz AUDIO Page 15 EXTRA CRYSTAL Page 16 EXPLANATION OF STEREO Page 16 RECEIVER TESTS Page 19 CHECKING STEREO OPERATION Page 19 CHECKING THE SENSITIVITY OF AN FM RECEIVER Page 20 CHECKING A RECEIVERS MAXIMUM RMS POWER OUTPUT Page 21 CHECKING AN AMPLIFIERS SENSITIVITY AND RMS POWER OUTPUT Page 22 SQUARE WAVE TESTING OF AUDIO AMPLIFIERS Page 22 TESTING 4 CHANNEL OR QUAD SYSTEMS Page 25 RECEIVER ALIGNMENT Page 26 FM IF ALIGNMENT Page 26 FM RF ALIGNMENT Page 29 FM STEREO SEPARATION ADJUSTMENTS Page 30 AM IF ALIGNMENT Page 31 AM RF ALIGNMENT Page 32 RECEIVER TROUBLESHOOTING Page 34 RECEIVER BLOCK DIAGRAM Page 34 RECEIVER TROUBLE CHARTS Page 36 DB TABLE Page 38 SERVICING YOUR SG165 * Page 39 DISASSEMBLY INSTRUCTIONS Page 39 REMOVING THE MPX BOARD Page 40 SG165 CALIBRATION ADJUSTMENT Page 40 CIRCUIT DESCRIPTION - BLOCK DIAGRAM Page 43 CIRCUIT DESCRIPTION - CIRCUIT OPERATIONS Page 45 TROUBLE CHARTS Page 54 BOARD LAYOUTS Page 57 SERVICE AND WARRANTY Page 60
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