Sony STR-GX390 Service Manual

STR-GX290/6X390
SERVICE MANUAL
AEP Model
Photo : STR-GX290
SPECIFICATIONS
Amplifier section
Continuous RMS power output
STR-GX390 : 50W +50W(8 ohms: AEP/4 ohms: Germany, at 40Hz—
20kHz less then 0.7% total harmonic distortion)
STR-GX290 : 30W + 30W(8 ohms: AEP/4 ohms: Germany, at 40Hz—
20kHz less then 0.7% total hamonic distortion)
Dynamic power (DIN) .
STR-GX390 : SOW +50W (8 ohms: AEP/4 ohms: Germany, at 1KHz
0.7%)
STR-GX290 : 30W+30W(8 ohms: AEP/4 ohms :Germany, at 1KHz
0.7%)
Dynamic power (IEC)
STR-GX390 : 50W +50W(8 ohms: AEP/4 ohms : Germany, at 1KHz
0.7%)
STR-GX290 : 30W + 30W(8 ohms: AEP/4 ohms: Germany, at 1KHz
0.7% )
Harmonic distortion
less then 0.7% at rated output
Frequency response
PHONO: RIAA equalization curve £0.5dB
CD
VIDEO | 10Hz—S50kHz *? dB
TAPE
Inputs
ane
Sensitivity Inpedance
S/N (Weighting network)
input level) |
74 dB
72 dB* (A, 2.5 mV)
CD, VIDEO 95 dB
TAPE 1, 2 eon 50 kohms | 80 dB* (A, 200 mv)
“78 IHF
Outputs
—
REC OUT Voltage :200 mV
VIDEO (AUDIO) OUT | Impedance 10 kohms
SPEAKER A, B Impedance 8 ohms : AEP/4 ohms : Germany—-16 ohms
HEADPHONES Accepts low and high impedance headphones
colts
Tone controls
BASS: £10dB at 100Hz
TREBLE : £10dB at 10kHz
Variable loudness contro!
+6dB at 100Hz (MAX)
FM STEREO/FM-AM RECEIVER
SONY.

Sony STR-GX390 Specifications

General

Power output	55 watts per channel into 8Ω (stereo)
Frequency response	10Hz to 50kHz
Total harmonic distortion	0.08%
Input sensitivity	2.5mV (MM), 150mV (line)
Signal-to-Noise Ratio	76dB (MM), 100dB (line)
Dimensions	430 x 135 x 310mm
Weight	7.2kg
Speaker load impedance	8 ohms