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Troubleshooting Guide
Before going through the check list below, first refer back to the connection and operating procedures.
Should any problem persist after you have made these checks, consult your nearest Sony dealer.
No audio
Cas audio from one channel
Lack of bass sound or obscure instrument position
e Check the power cord connection.
e Check the SPEAKERS selector setting.
© Check the connections.
¢ Check the setting of the function selector.
¢ Check the speaker terminal connection and the speaker cord
for a short.
¢ Adjust the BALANCE control.
¢ Check the speaker cord or connecting cord connection.
¢ Check the connection between the amplifier and speakers.
Severe hum or noise when using the turntable
Noise when TV is turned on
Switching on DBFB does not affect the sound
¢ Ground the turntable system.
¢ Fully insert the plug of the connecting cord.
¢ Disconnect the ground wire of the turntable from the terminal
when using an MM cartridge with a ground piece.
e Move the TV away from the audio system.
¢ DBFB reinforces only low frequencies at low sound levels.
Specifications
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 8 ohm loads both channels driven,
from 20 — 20,000 Hz; rated 135 watts per
channel minimum RMS power, with no
more than 0.9% total harmonic distortion
from 250 milliwatts to rated output.
Amplifier section
Power bandwidth (IHF) 30 Hz - 30 kHz (8 ohms, 65 watts)
Dynamic headroom
1.7 dB (78 IHF)
Harmonic distortion
Less than 0.9% at rated output
Frequency response
PHONO: RIAA equalization curve
TUNER, CD, VIDEO, TAPE: 30 Hz - 30 kHz +3 dB
Damping factor
27 (8 ohms, 1 kHz)
input
S/N (weighting
network, input
level)
71 dB
50kilohms
| 75dB*
(A, 3.0 mV)
92 dB
50 kilohms
83 dB*
(A, 250 mV)
Jack
type
Input jack
Sensitivity
Impedance
*°78 IHF
Output
REC OUT
Phono jacks | Voltage 150 mV
Impedance 1 kilohm
SPEAKERS
|—
_| Accepts speakers of 8 - 16 ohms.
HEADPHONES
Stereo phone | Accepts low and high impedance
jack
headphones.
GRAPHIC EQUALIZER controls
Boost/cut range: +8 dB (100 Hz, 330 Hz,
1 kHz, 3.3 KHz)
: +6 dB (10 KHz)
General
System
Preamplifier: Low-noise, high-gain equalizer
amplifier
Power amplifier: Pure-complementary SEPP
OCL power amplifier with all stages
directly coupled
Power requirements
120 V AC, 60 Hz
Power consumption
235 W
AC outlets
3 switched, total 100 watts max.
Dimensions
Approx. 430 x 130 x 355 mm (w/h/d)
(17 x 54s x 14 inches)
Weight
Approx. 8.5 kg (18 Ib 12 02)
Supplied accessory
Remote commander (1)
(TA-AX390: RM-S390, TA-AX391: RM-P202)
Design and specifications subject to change without notice.
Sony Corporation
Printed in Korea
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