Technics ST-G3 Service Manual

Service Manu
CYUARTZ Synthesizer
FM/AM Stereo Tuner
SPECIFICATIONS
(DIN 45 500)
@ FM TUNER SECTION
Frequency range
Sensitivity
S/N 30 dB
S/N 26 dB
S/N 20 dB
IHF 46 dB stereo quieting sensitivity
Total harmonic distortion
MONO
STEREO
S/N
MONO
STEREO
Frequency response
Alternate channel selectivity
87.50~108.00 MHz
87.525~ 108.00 MHz (+25 kHz shift)
0.95 uV (IHF, usable)
ORDER NO. HAD84122364C9
Tuner
ST-G3
Color
(S)...Silver Type
(K)...Black Type
(S) (K)
(S) (K)
(S) (K)
{EX]...Switzerland and
Scandinavia.
[EH]...Holland.
[XA]...Asia, Latin America,
Africa, Middle Near
East and Oceania.
[XL]...Australia.
[PA]...Far East PX.
[PE]...European Military.
[PC]...European Audio Club.
(S) (K)
(S) (K)
(S) (K)
(S) (K)
@ AM TUNER SECTION
Frequency range
(For Europe, South Africa and Australia)
522~1611 kHz (9 kHz-step)
0.8 pV (75) 531~1610 kHz (9 kHz-step)
Sensitivity (S/N 20 dB) 20 pV, 290 uV/m
0.09% Selectivity (+9 kHz) 55 dB
0.2% Image rejection at 999 kHz 40 dB
IF rejection at 999 kHz 60 dB
70 dB (76 dB, IHF)
65 dB (71 dB, IHF)
4 Hz~18 kHz, +0.5 dB~ —1.5 dB
@ GENERAL
Output voltage 0.3V (0.6 V IHF)
normal +400 kHz 65 dB Power consumption 9W
Capture ratio 1.0 dB Power supply
Image rejection at 98 MHz
55 dB
For Australia
AC 50 Hz/60 Hz, 240V
IF rejection at 98 MHz
90 dB
For continental Europe
AC 50 Hz/60 Hz, 220V
Spurious response rejection at 98 MHz
80 dB
For others
AC 50 Hz/60 Hz, 110V/127V/220V/240V
AM suppression
55 dB Dimensions (WXHXD)
430 X 53 X 245 mm
Stereo separation
(16-30/32" X 2-3/32" x 9-21/32")
1 kHz 50 dB Weight 2.2 kg
10 kHz 40 dB (4.8 Ib.)
Carrier leak
19 kHz —65 dB (—70 dB, IHF) Note:
38 kHz
—45 dB (-50 dB, IHF)
Total harmonic distortion is measured by the digital spectrum
Channel balance (250 Hz~6,300 Hz) +1.0 dB analyzer (H.P. 3045 system).
Limiting point
0.75 wv
eee ;
: ;
Bandwidth Specifications are subject to change without notic for further
IF amplifier 180 kHz uprewemient
FM demodulator 1000 kHz
Antenna terminals
Technics
75Q (unbalanced)
Matsushita Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan
Panasonic. Tokyo
Matsushita Electric Trading Co., Ltd.
1-2, 1-chome, Shibakoen, Minato-ku, Tokyo 105 Japan