Equipment information:

Sencore SG165 Analyzer
Manufacturer:
Sencore
Model: SG165
Date:
Category: Measurement instruments
Group: Analyzer
Description: AM- FM STEREO ANALYZER
Information:
                                    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
File name: Sencore-7924-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 71
Size: 31.91 Mbytes (33461195 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: 101fdcba6b094e531aeca04652ef7f63
ed2kID: bb618fe55ae6e66456a3f86ce5cfa5a5
Downloads: 31 since 12 June 2016
Information:
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
Sencore-7924-Manual-Page-1-Picture
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