Aiwa CDC-R237 User Manual

1
Ver 1.0 2003. 02
Model Name Using Similar Mechanism NEW
CD Drive Mechanism Type MG-930B-185
Optical Pick-up Name OPTIMA-752B2
SERVICE MANUAL
AEP Model
UK Model
CDC-R237
RADIO SECTION
(FM)
Frequency Range: 87.5 MHz – 108 MHz
Intermediate frequency: 10.7 MHz
Usable Sensitivity: 12.7 dBf
50 dB Quieting Sensitivity: 17.2 dBf
IF Rejection: 100 dB
Frequency Response: 30 Hz – 15,000 Hz
S/N Ratio: 67 dB
Stereo Separation: 35 dB at 1 kHz
Alternate Channel Selectivity: 98 dB
Capture Ratio: 3 dB
(MW)
Frequency Range: 531 kHz – 1,602 kHz
Intermediate frequency: 10.71 MHz/450 kHz
Usable Sensitivity: 30 µV (30 dB)
(LW)
Frequency Range: 144 kHz – 288 kHz (1 kHz/9 kHz step)
Intermediate frequency: 10.71 MHz/450 kHz
Usable Sensitivity: 30 µV (30 dB)
SPECIFICATIONS
CD SECTION
Frequency Response: 17 Hz – 20 kHz +0/–3 dB
Dynamic Range: More than 92 dB
Channel Separation: More than 60 dB
S/N Ratio: More than 92 dB
Wow/Flutter: Unmeasurable
AUDIO SECTION
Max. Power Output: 45 W × 4 channels
AUX Input
Input sensitivity (load impedance) AUX: 300 mV (10 kΩ)
• The CD section have no adjustment.
Sony Corporation
e Vehicle Company
Published by Sony Engineering Corporation
9-877-041-01
2003B0400-1
© 2003. 02
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FM/MW/LW COMPACT DISC PLAYER

Aiwa CDC-R237 Specifications

General

Brand	Aiwa
Model	CDC-R237
Category	Car Receiver
Language	English

Summary

Product Specifications

Radio Reception Specs

Detailed specifications for FM, MW, and LW radio reception.

CD Playback Performance

Performance metrics for the CD drive mechanism.

Audio Output Specs

Specs for audio power output and channel separation.

Auxiliary Input Details

Input sensitivity and impedance for the AUX audio input.

Service and Safety Information

Service Handling Precautions

Guidelines for handling optical pick-up, laser diodes, and chip components.

Safety Warnings and Component Notes

Critical safety warnings and notes on critical components.

General Unit Information

Unit Connections

Details for connecting the unit to power, antenna, and speakers.

Installation Precautions

Important safety and connection precautions for installation.

Disassembly Procedures

Sub Panel and CD Mechanism Disassembly

Steps for disassembling the sub panel and CD mechanism blocks.

Main Board and Servo Board Disassembly

Procedures for removing the main board and servo board sections.

Optical Pick-up Assembly Disassembly

Guide for disassembling the optical pick-up sub-assembly.

Electrical Adjustments

RDS Adjustment Procedure

Steps and specifications for adjusting the RDS function.

Technical Diagrams and Schematics

IC Pin Descriptions

Detailed pin assignments and functions for key integrated circuits.

Block Diagrams and Circuit Locations

Functional overviews and physical placement of circuit boards.

Printed Wiring Boards and Schematics

Component layouts and circuit schematics for main sections.

IC Block Diagrams

Internal functional block diagrams for major integrated circuits.

Exploded Views and Parts Lists

Exploded Views of Major Assemblies

Visual breakdowns of chassis, front panel, and CD mechanism.

Electrical Parts List

Comprehensive list of electronic components used in the unit.