Thought I would never find a copy of the Technics SX-EN2 Service Manual until I found Owner-Manuals.com. Price was very fair and I received the download promptly. While a photocopy, it is quite readable and includes all the pertinent information and diagrams. Thank you Owner-Manuals!
Very good quality scan of the document. I am very pleased with what I got.
Text excerpt from page 17 (click to view)
PRACTICAL SERVICE FIGURE
< TUNER SECTION >
1. FM VT Adjustment Settings : � Test point : TP2(VT) � Adjustment location : L006 Method : Set to FM 108.0MHz and adjust L006 so that the test point voltage becomes 6.0V ± 0.05V. 2. MW VT Adjustment Settings : � Test point : TP2(VT) � Adjustment location : L004 Method : Set to MW 1000kHz (U), and adjust L004 so that the test point voltage becomes 3.75V ± 0.05V. 3. FM Tracking Adjustment L005.........................................................................98.0MHz 4. MW Tracking Adjustment L003...........................................................................600kHz TC001.......................................................................1400kHz 5. AM IF Adjustment Settings : � Test point : TP1(DET) � Adjustment location : L007 Method : Adjust L007 so that the output level at 1400kHz becomes maximum.
< TUNER SECTION >
< FM SECTION >
Sensitivity: (THD 3%) Signal to Noise Ratio: (Input 60dB) Distortion: (Input 60dB) Intermediate frequency: Stereo separation: Less than 1.5% (at 98.0MHz) 10.7MHz ±0.1MHz More than 22dB Less than 19dB (88.0MHz) Less than 18dB (98.0MHz) Less than 18dB (108.0MHz) More than 60dB (at 98.0MHz)
< AM SECTION >
Sensitivity: (S/N 10dB) Distortion: (Input 74dB) Intermediate frequency: Less than 45dB (at 600kHz) Less than 45dB (at 1000kHz) Less than 45dB (at 1400kHz) Less than 1.5% 455kHz±3.5kHz
< CASSETTE SECTION >
Tape speed: Wow & flutter: S/N ratio: Distortion: Noise (PB): 3000Hz+3%-2% Less than 0.35% (JIS RMS) More than 35dB Less than 3.0% (PB) Less than 1mV (DC, MIN) Less than 1.2mV (AC, MIN) More than 45dB
< DECK SECTION >
6. Tape Speed Adjustment Settings : � Test tape : TTA�100 � Test point : J251 (PHONES jack) � Adjustment location : SFR of deck motor Method : Play back the test tape and adjust SFR so that the frequency counter reads 3000Hz ± 30Hz.
Erasing Ratio (W/O FILTER):
7. Head Azimuth Adjustment Settings : � Test tape : TTA�320 � Test point : J251 (PHONES jack) � Adjustment location : Azimuth adjustment screw Method : Play back the 8kHz signal of the test tape and adjust screw so that the output becomes maximum. 8. Bias frequncy Adjustment L801..................................................................85kHz±0.5kHz
< CD SECTION >
9. FE Balance Adjustment Settings : � Test point : IC401 PIN58 (VR), IC401 PIN 20 (FE) � Adjustment location : SFR430 Method : Playback the disc and adjust SFR430 so that the test point voltage becomes 0V.
