Sony CDX-GT250M - User Manual

1
Ver. 1.0 2006. 01
SERVICE MANUAL
E Model
CDX-GT250M
SPECIFICATIONS
• The tuner and CD sections have no adjustments.
Sony Corporation
eVehicle Division
Published by Sony Techno Create Corporation
9-887-070-01
2006A04-1
© 2006. 01
FM/AM COMPACT DISC PLAYER
CD Player section
Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and flutter: Below measurable limit
Tuner section
FM
Tuning range: 87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
FM tuning interval: 50 kHz/200 kHz switchable
Antenna terminal: External antenna connector
Intermediate frequency: 10.7 MHz/450 kHz
Usable sensitivity: 9 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz:
0.5 % (stereo), 0.3 % (mono)
Separation: 35 dB at 1 kHz
Frequency response: 30 – 15,000 Hz
AM
Tuning range: 531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
AM tuning interval: 9 kHz/10 kHz switchable
Antenna terminal: External antenna connector
Intermediate frequency: 10.7 MHz/450 kHz
Sensitivity: 30 µV
Power amplifier section
Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W × 4 (at 4 ohms)
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Model Name Using Similar Mechanism CDX-GT250S
CD Drive Mechanism Type MG-611WA-186//Q
Optical Pick-up Name KSS1000E
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TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Summary

Specifications

CD Player Section

Details technical specifications for the CD playback functionality.

Tuner Section

Lists technical specifications for FM and AM radio reception.

Power Amplifier Section

Outlines specifications for the unit's power amplifier outputs.

Service Notes and Precautions

Handling and Safety Precautions

Provides essential safety warnings and handling guidelines for service personnel.

General Information

Connections

Details external wiring and connection procedures for power, antenna, and audio.

Disassembly Procedure

Disassembly Sequence Overview

Provides a step-by-step guide for dismantling the unit's components.

Sub Panel and CD Mechanism Block Disassembly

Main Board and Chassis Disassembly

Optical Pick-up and Motor Assembly Disassembly

Diagrams and Schematics

Block Diagrams

Schematic Diagrams

IC Block Diagrams and Pin Descriptions

Sony CDX-GT250M Specifications

General

Brand	Sony
Model	CDX-GT250M
Category	Car Receiver
Language	English