Technics Quartz ST-X830L Service Manual

ORDER NO. HAD8705155C8
Service Manual
CQUARTZ SYNTHESIZER
LW/MWI/FM STEREO TUNER
SPECIFICATIONS
(DIN 45 500)
@ FM TUNER SECTION
Frequency range 87.50~ 108.00 MHz (50 kHz-steps)
Sensitivity 1.5uV (IHF, usable)
SIN 30dB 1.3uV (750)
SIN 26dB 1.2pV (75Q)
S/N 20dB 0.9nV (759)
IHF 46dB stereo quieting sensitivity 28yuV/75Q
Total harmonic distortion
MONO 0.15%
STEREO 0.3%
SIN
MONO 70dB (78dB, IHF)
STEREO 65dB (70dB, IHF)
Frequency response 20Hz~15kHz, +0.5dB~ —1.5dB
Alternate channel selectivity
+400kHz 65dB
Capture ratio 1.0dB
image rejection at 98 MHz 40dB
IF rejection at 98 MHz 70dB
Spurious response rejection at 98 MHz 70dB
AM suppression 55dB
Stereo separation
1kHz 40dB
10kHz 30dB
Technics
Tuner
3 T-X830L
Continental Europe.
United Kingdom.
Belgium.
Holland.
Asia,Oceania,Latin
America, Middle
Near East and Africa.
Carrier leak
19kHz —30dB (—35dB, IHF)
38kHz ~45dB (—50dB, IHF)
Channel balance (250 Hz~~6, 300 Hz) +1.5dB
Limiting point 1.2uV
Bandwidth
IF amplifier 180 kHz
FM demodulator 1000 kHz
Antenna terminals 75Q (unbalanced)
Wi AM TUNER SECTION
Frequency range
(For Europe)
MW 522 kHz~ 1611 kHz (9kHz-steps)
530 kHz~ 1620 kHz (10 kHz-steps)
LW 155 kKHz~353 kHz (9kHz-steps)
153kHz~351 kHz (—2kHz shift)
(For others)
MW 531 kHz~ 1602kHz (9kHz-steps)
530kHz2~ 1600 kHz (10 kHz-steps)
LW 155 kHz~281 kHz (9kHz-steps)
)
153kH2~279kHz (—2kHz shift
Matsushita Electric Trading Co., Ltd.
PO. Box 288, Central Osaka Japan