Sony MDX-C670RDS User Manual

MICROFILM
SERVICE MANUAL
MDX-C670/C670RDS
Refer to RM-X2S/X3S Service Manual (9-960-039-
∏) issued previously for information of remote
commander (RM-X2S) supplied with this set.
Photo : MDX-C670RDS
Model Name Using Similar Mechanism NEW
Base Mechanism Type MG-164K-138
Optical Pick-up Name KMS-241A/J2N
SPECIFICATIONS
MD player section
Signal-to-noise ratio 90 dB
Frequency response 10 – 20,000 Hz
Wow and flutter Below measurable limit
Tuner section
FM
Tuning range MDX-C670 :
FM tuning interval :
50 kHz/200 kHz
switchable
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
MDX-C670RDS :
87.5 – 108.0 MHz
Aerial terminal External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity 10 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 62 dB (stereo),
65 dB (mono)
Harmonic distortion at 1 kHz
0.9% (stereo),
0.5% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
Capture ratio 2dB
AM (MDX-C670)
Tuning range AM tuning interval :
9 kHz/10 kHz switchable
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
MW/LW (MDX-C670RDS)
Tuning range MW : 531 – 1,602 kHz
LW : 153 – 281 kHz
Antenna terminal External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
Sensitivity AM, MW : 30 µV
LW : 50 µV
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output 35 W × 4 (at 4 ohms)
– Continued on next page –
US Model
Canadian Model
E Model
MDX-C670
AEP Model
UK Model
MDX-C670RDS
MDX-C670
FM/AM MINIDISC PLAYER
MDX-C670RDS
FM/MW/LW MINIDISC PLAYER

Sony MDX-C670RDS Specifications

General

Brand	Sony
Model	MDX-C670RDS
Category	MiniDisc Player
Language	English

Summary

Specifications

MD Player Section Specifications

Details noise ratio, frequency response, and wow/flutter for the MD player.

Tuner Section Specifications

Covers FM tuning range, IF, sensitivity, selectivity, and S/N ratio.

AM (MDX-C670) Tuning Specifications

Lists AM tuning range and intervals for the MDX-C670 model.

MW/LW (MDX-C670RDS) Tuning Specifications

Specifies MW/LW tuning ranges and intervals for MDX-C670RDS.

Power Amplifier Section Specifications

Details speaker outputs, impedance, and maximum power output.

Service Note

Installation Guide

Installation Precautions

Essential safety and operational guidelines for installing the unit in a vehicle.

Front Panel Detach/Attach Procedure

Step-by-step guide on how to remove and reattach the front panel.

Mounting Examples and Methods

Illustrates how to install the unit in a dashboard with examples.

Japanese Car Mounting Considerations

Connections Guide

Connection Cautions and Safety

Ignition Key Switch Accessory Position

Reset Button Operation

Connection Diagram Examples

Disassembly Procedures

Front Panel Disassembly Steps

Mechanism Deck Disassembly

Servo Board and Float Block Disassembly

Holder Assy and Optical Pick-Up Disassembly

Motor Assy and Sensor Board Disassembly

Electrical Adjustments

Test Mode Procedures

How to enter and exit the unit's test mode for easier adjustments.

FM Auto Scan/Stop Level Adjustment

Procedure for adjusting FM auto scan and stop levels.

FM Stereo Separation Adjustment

Method for adjusting FM stereo separation for optimal performance.

AM (MW) Auto Scan/Stop Level Adjustment

Procedure for adjusting AM/MW auto scan and stop levels.

RDS S-Meter Adjustment (MDX-C670RDS)

Steps for adjusting the RDS S-meter on the MDX-C670RDS model.

Diagrams and Boards

Electrical Parts List