Technics ST-G470

ORDER NO. AD9005134C2
Service
Manual
CYUARTZ Synthesizer
AM/FM Stereo Tuner
SPECIFICATIONS
(DIN 45 500)
MFM TUNER SECTION
87.50~ 108.00 MHz
87.525~108.00 MHz (+25 kHz shift)
Frequency range
Sensitivity 1.5 uV (IHF, usable)
SIN 30 dB 1.3 yV (75 Q)
SIN 26 dB 1.2 pV (75 Q)
SIN 20 dB 0.9 pV (75 Q)
IHF 46 dB stereo quieting sensitivity 28 pV/75 Q
Total harmonic distortion
MONO (normal) 0.05 %
STEREO (normal) 0.1%
SIN
MONO 72 dB (80 dB, IHF)
STEREO 65dB (73 dB, IHF)
Frequency response 4Hz~15 kHz, +0.5 dB~ —1.0 dB
Alternate channel selectivity
+400 kHz 65 dB
Capture ratio 1.0 dB
Image rejection at 98 MHz 100 dB
IF rejection at 98 MHz 100 dB
Spurious response rejection at 98 MHz 100 dB
AM suppression 55 dB
Stereo separation
1 kHz 50 dB
10 kHz 40 dB
Carrier leak
19 kHz —75 dB (--80 dB, IHF)
38 kHz —75 dB (—80 dB, IHF)
Channel balance (250 Hz~ 6,300 Hz) +1.0 dB
Limiting point 0.85 UV
Bandwidth
IF amplifier 180 kHz
FM demodulator 1000 kHz
Antenna terminals 75 Q (unbalanced)
Technics
Area
Tuner
ST-G470
Color
(K)sedvece es Black Type
Country
Code
(EG)
F.R. Germany
(Ei)
Italy
WAM TUNER SECTION
Frequency range
AM
Sensitivity (S/N 20 dB)
AM
Selectivity (+9 kHz)
AM (at 999 kHz)
Image rejection
AM (at 999 kHz)
IF rejection
AM (at 999 kHz)
Mi GENERAL
Output voltage
Power consumption
Power supply
Dimensions (W x H x D)
Weight
Note:
522 kHz~1611 kHz (9 kKHz-steps)
530 kHz~1620 kHz (10 kHz-steps)
20 UV, 300 pV/m
50 dB
40 dB
60 dB
0.45 V (0.9 V IHF)
9W
AC 50 Hz/60Hz, 220 V
430 x 69 x 288 mm
(16-15/16" x 2-23/32” x 11-11/32")
2.5 kg (5.5 |b)
Specifications are subject to change without notice. Wei ght and
dimensions are approximate.
Matsushita Electric Industrial Co., Ltd.
Central P.O. Box 288, Osaka 530-91, Japan

Technics ST-G470 Specifications

General

AM Tuning Range	522 - 1611 kHz
Tuning System	Quartz-Synthesizer
FM Tuning Range	87.5 - 108.0 MHz
Total Harmonic Distortion (FM)	0.15%
Frequency Response (FM)	20 Hz - 15 kHz

Summary

Location of Controls

Front Panel Control Layout

Display Panel Indicators

Measurements and Adjustments

FM Mono Distortion Adjustment

Procedure to calibrate mono audio distortion for optimal sound.

MPX VCO Adjustment

Procedure for aligning the multiplex stereo decoder.

FM Signal Strength Level Adjustment

Procedure to set the FM signal strength indicator accuracy.

Technical Diagrams and Schematics

Main Schematic Diagram

Detailed electronic circuit schematics of the tuner.

Terminal Guide for Components

Lists and describes the pin functions of ICs, transistors, and diodes.

Printed Circuit Board Layouts

Diagrams showing the physical arrangement of components on PCBs.

IC Terminal Function Details

System Block Diagram

Replacement Parts List

ICs, Transistors, and Diodes

Resistors, Capacitors, and Coils

Other Components and Cabinets