Sony ST-JX295 Service Manual

SERVICE MANUAL
ST-JX290: This set is the tuner section in
SEN-290 (CND, E)/SEN-390 (US).
US Model
E Model
ST-JIX295/IX390
Canadian Model
ST-JX295
Photo: ST-JX390
SPECIFICATIONS
FM tuner
Frequency range
Antenna terminal
87.5 — 108 MHz
300 ohms, balanced
75 ohms, unbalanced
iF 10.7 MHz
Sensitivity
S/N 50 dB sensitive
22.1 dBt (7 nV)
42.1 dBI (70 2V)
19.5 dBf (5 pV)
Usable sensitivity (IHF)
80 dB (mono), 75 dB (stereo)
0.3% (mono), 0.5% (stereo) at 1 KHz
Signal-to-noise ratio
Harmonic distortion
Separation 40 dB (1 KHz)
Frequency response 30 Hz — 15 kHz "20 dB
Selectivity 55 dB (400 kHz) :
AM suppression ratio 54 dB
Image response ratio 50 dB
IF response ratio 90 dB
Spurious response ratio 70 dB
Automatic tuning threshold 17.8 nV (30 dBf)
Output 775 mV, 4.7 kohms (at 75 kHz deviation) (ST-JX390)
Sony: Corporation Printed in
AM tuner
Frequency range
Antenna
IF
530 — 1,710 kHz (10 kHz)
531 — 1,710 kHz (9 kHz)
530 — 1,710 kHz (10 kHz)
531 — 1,602 kHz (9 kHz)
Loop antenna, External antenna terminal
450 kHz
\usica Model
E Model
Sensitivity (999 kHz or 1,000 kHz)
Signal-to-noise ratio
Harmonic distortion
Selectivity
Frequency response
General
Power requirements
Power consumption
500 »nV/m (when the loop antenna is in use)
54 dB (mono, normal)
0.5% (mono, normal)
35 dB (9 kHz, normal)
38 dB (10 KHz, normal)
40 Hz — 3.5 kHz +8 dB (normal)
120 V AC, 60 Hz
-JX
8 W ST-JX390
Dimensions Approx. 430 x 80 x 260 mm (w/h/d)
(17 x3 %4x 10 "I, inches)
Weight Approx. 2.4 kg (5 Ib 5 oz) (ST-JX390)
Approx. 2.0 kg (4 Ib 7 oz) (ST-JX295)
Supplied accessories (ST-JX390)
Remote control cord (1)
Connecting cord (1)
FM wire antenna (1)
AM loop antenna (1)
Design and specifications subject to change without notice.
FM STEREO/FM-AM TUNER