Sony STR-GX415 User Manual

STR-GX210/GX810/GX415
SERVICE MANUAL
AEP Model
STR-GX215/GX3 15/GX415
East European Model
STR-GX215/GX315
UK Model
STR-GX315
PHOTO: STR-GX415
SPECIFICATIONS
Amplifier section
AEP1, German, 90W+90W 70W+70W
East European, (4ohms) (4ohms)
UK model 80W+80W 50W+50W
DIN, IkHz (80hms) (80hms)
80W+80W 70W+70W 50W+50W
(80hms) (80hms) (80hms)
40Hz-20kHz
THD 0.3%
Harmonic distortion
Less than 0.8% at rated output
Frequency response
PHONO: RIAA equalization curve +0.5dB
CD
VIDEO | 10Hz-50kHz ‘3 dB
TAPE
Input
Sensitivity Impedance S/N (weighting network,
input level)
PHONO 2.5mV 50kilohms 75d B(A net)
75dB*(A net, 5.0 mV)
CD, VIDEO, — | 250mV 5O0kilohms 82dB (A net)
TAPE 1,2 82dB*(A net 500mV)
*78 THF
Outputs
REC OUT, Voltage 250mV
VIDEO (AUDIO) OUT Impedance 10kilohms
HEADPHONES Accepts low and high impedance
head phones
Tone controls
BASS: £10dB at 100Hz
TREBLE: +10dB at 10kHz
Loudness
+6dB (100Hz)
MICROFILM
Tuner section
Tuning range 87.5-108MHz 531-1602kHz
Antenna 75ohms, unbalanced
Sensitivity at 18.3dBf, 2.2nV (mono)
41dB quieting 40d Bf, 24.5yV (stereo)
Usable sensitivity 11.2d Bf, 1pV (IHF) Loop antenna:
300pV (at 999kHz)
Signal-to-noise ratio 70dB (mono) /66dB (stereo) | 54dB (at 50mV/m)
Harmonic distortion 0.3% (mono), 0.5% 0.5% (at 50mV/m,
(stereo) at 1kHz 400 Hz)
60dB at 400kHz 30dB at 10kHz
Frequency response 30Hz—15kHz “3° dB | —
General
System
Tuner section: PLL quartz-locked digital synthesizer system
Preamplifier section: low-noise NF type equalizer amp
Power amplifier section: pure complementary SEPP
Power requirements
220-230V AC, 50/60Hz
240V AC, 50/60Hz (U.K. model)
Power consumption
ara STR-GX415 STR-GX315 STR-GX215
AEP1, German model | 230W 200W 160W
AEP2, East European, | 165W 130W 110W
UK model
—Continued on next page— FM Stepeo
FM-AM Receiver
SONY.
FM tuner section AM tuner section
£ 8 Ei
=z

Sony STR-GX415 Specifications

General

Speaker load impedance	8 ohms
Weight	8.5 kg
Tuning range	FM
Frequency Response	10Hz to 50kHz
Total Harmonic Distortion	0.08%
Input Sensitivity	150mV (line)
Output	Headphones (standard stereo jack)
Dimensions	430 x 136 x 315 mm

Summary

Specifications Overview

Amplifier Section Specifications

Details on power output, frequency response, and distortion.

Tuner Section Specifications

FM/AM sensitivity, selectivity, and signal-to-noise ratio.

Input/Output and Tone Control Specs

Specifications for audio inputs, outputs, and tone adjustments.

Model Identification Guide

Front Panel Controls and Indicators

STR-GX415/GX315 Front Panel Controls

Identification and function of controls on the front panel.

STR-GX215 Front Panel Controls

Identification and function of controls on the front panel.

Electrical Adjustment Procedures

FM Signal Level Display Adjustment

Procedure for calibrating the FM signal level indicator.

System Diagrams

IC Pin Functionality Details

Pin assignments for the system control IC (µPD78043GF).

Block Diagram Overview

Circuit Board and Lead Layouts

Circuit Board Locations

Diagram showing the physical placement of internal circuit boards.

Semiconductor Lead Layouts

Visual representations of semiconductor pin configurations.

Main Section Schematic Diagrams

GX215 Main Schematic Diagram

Schematic diagram for the GX215 main board.

Main Schematic Diagrams (GX315, GX415)

Display Section Printed Wiring Boards

Display Board Wiring Diagram

Wiring diagram for the display circuit board.

Main Section Printed Wiring Boards

Exploded Views of Components

Cabinet Section Assembly Breakdown

Diagram showing the assembly of the unit's cabinet.

Chassis Section Assembly Breakdown

Diagram showing the assembly of the unit's chassis.

Electrical Parts List

Capacitors, Diodes, and Connectors

List of capacitors, diodes, and connectors with specifications.

Transistors and Resistors

List of transistors and resistors with specifications.

Switches, ICs, and Other Components

List of switches, ICs, and other parts.