Technics ST-X930 Service Manual

ORDER NO. AD8806149C2
CYUARTZ Synthesizer
AM/FM Stereo Tuner
Tuner
ST-X930
Color
SPECIFICATIONS
(DIN 45 500)
m FM TUNER SECTION
Frequency range 87.50 ~ 108.00 MHz (50 kHz-steps)
Sensitivity 1.5 yV (IHF, usable)
S/N 30 dB 1.3 pV (750 )
S/N 26 dB 1.2 pV (750)
S/N 20 dB 0.9 pV (750 )
IHF 46 dB stereo quieting sensitivity 28 pV / 750
Total harmonic distortion
MONO 0.15%
STEREO 0.3%
S/N
MONO 70 dB ( 78 dB, IHF )
STEREO 65 dB (71 dB.IHF )
Frequency response 20 Hz ~ 15 kHz,(+0.5 dB ~ -2.0 dB)
Alternate channel selectivity
+400 kHz 70 dB
Capture ratio 1.0 dB
Image rejection at 98 MHz 90 dB
IF rejection at 98 MHz 90 dB
Spurious response rejection at 98 MHz 90 dB
AM suppression §5 dB
Stereo separation
1 kHz 40 dB
Carrier leak
19 kHz -70 dB (-80 dB, IHF)
38 kHz -75 dB (-80 dB, IHF)
Channel balance (250 Hz ~ 6,300 Hz) + 1.2 dB
Limiting point 1.0 pV
Technics
Bandwidth
IF amplifier 480 kHz
FM demodulator 1000 kHz
Antenna terminals 75Q (unbalanced)
m AM TUNER SECTION
Frequency range 522 kHz ~ 1611 kHz (9 kHz-steps)
530 kHz ~ 1620 kHz (10 kHz-steps)
Sensitivity (S/N 20 dB) 20 uV,300 pV/m
Selectivity (+ 9 kHz)
(at 999 kHz) 55 dB
Image rejection
(at 999 kHz) 40 dB
IF rejection
(at 999 kHz) 60 dB
a GENERAL
Output voltage 0.5V (1.0V,IHF)
Power consumption QW
Power supply AC 50 Hz/60 Hz,220V
Dimensions (W x H x D) 360 x 64.5 x 288 mm
(14-3/16" x 2-17/32" x 11-11/32")
Weight 2.0 kg (4.4 Ib.)
Notes:
1.Specifications are subject to change without notice.
Weight and dimensions are approximate.
2.Total harmonic distortion is measured by the digital
spectrum analyzer (H.P. 3045 system).
Matsushita Electric Industrial Co., Ltd.
Central P.O. Box 288, Osaka 530-91, Japan