Sony CDX-M670: Additional Information

Notes

• For safety, turn off the ignition before cleaning the

connectors, and remove the key from the ignition

Additional Information

switch.

• Never touch the connectors directly with your fingers

or with any metal device.

Maintenance

Replacing the lithium battery

Under normal conditions, batteries will last

approximately 1 year. (The service life may be

Fuse replacement

shorter, depending on the conditions of use.)

When replacing the fuse, be sure to use one

When the battery becomes weak, the range of the

matching the amperage rating stated on the

card remote commander becomes shorter.

original fuse. If the fuse blows, check the power

Replace the battery with a new CR2025 lithium

connection and replace the fuse. If the fuse blows

battery.

again after replacement, there may be an internal

malfunction. In such a case, consult your nearest

Sony dealer.

Fuse (10 A)

x

+ side up

Warning

Never use a fuse with an amperage rating

exceeding the one supplied with the unit as this

could damage the unit.

Cleaning the connectors

The unit may not function properly if the

connectors between the unit and the front panel

are not clean. In order to prevent this, detach the

front panel (page 9) and clean the connectors

with a cotton swab dipped in alcohol. Do not

apply too much force. Otherwise, the connectors

may be damaged.

Notes on lithium battery

• Keep the lithium battery out of the reach of

children. Should the battery be swallowed,

immediately consult a doctor.

• Wipe the battery with a dry cloth to assure a

good contact.

• Be sure to observe the correct polarity when

installing the battery.

• Do not hold the battery with metallic tweezers,

Main unit

otherwise a short-circuit may occur.

WARNING

Battery may explode if mistreated.

Do not recharge, disassemble, or dispose of

in fire.

Back of the front panel

36

If the front panel does not open

Removing the unit

because of a blown fuse

1 Remove the front cover

With the front panel open

1 Press the clip inside the front cover

with a release key (supplied), and

1 Remove the front cover

pry the front cover free.

1 Press (OPEN/CLOSE) or (OPEN) of

the unit, then press the clip inside

the front cover with a thin

screwdriver, and gently pry the front

cover free.

Release key (supplied)

Note

To protect the surface of the unit, put thin cloth

between release key and the unit by inserting the

2 Repeat step 1 on the left side.

release key.

The front cover is removed.

2 Repeat step 1 on the left side.

The front cover is removed.

2 Remove the unit

1 Use a thin screwdriver to push in

the clip on the left side of the unit,

2 Remove the unit

then pull out the left side of the unit

until the catch clears the mounting.

1 Use a release key to push in the clip

on the left side of the unit, then pull

out the left side of the unit until the

catch clears the mounting.

2 Repeat step 1 on the right side.

3 Slide the unit out of the mounting.

2 Repeat step 1 on the right side.

3 Slide the unit out of the mounting.

37

Specifications

Tone controls (CDX-M670, MDX-M690 only)

CD/MD Player section

Bass ±8 dB at 100 Hz

Signal-to-noise ratio 90 dB

Treble ±8 dB at 10 kHz

Frequency response 10 – 20,000 Hz

Loudness (CDX-M670, MDX-M690 only)

Wow and flutter Below measurable limit

+8 dB at 100 Hz

+2 dB at 10 kHz

Tuner section

Power requirements 12 V DC car battery

(negative earth)

FM

Dimensions Approx. 178 × 50 × 182

Tuning range 87.5 – 108.0 MHz

mm (w/h/d)

Aerial terminal External aerial connector

Mounting dimensions Approx. 182 × 53 × 160

Intermediate frequency 10.7 MHz/450 kHz

mm (w/h/d)

Usable sensitivity 8 dBf

Mass Approx. 1.5 kg

Selectivity 75 dB at 400 kHz

Supplied accessories Parts for installation and

Signal-to-noise ratio 66 dB (stereo),

connections (1 set)

72 dB (mono)

Front panel case (1)

Harmonic distortion at 1 kHz

Card remote commander

0.6 % (stereo),

RM-X111

0.3 % (mono)

Rotary commander

Separation 35 dB at 1 kHz

RM-X5S (CDX-M770)

Frequency response 30 – 15,000 Hz

Optional accessories Rotary commander

RM-X5S (CDX-M670,

MW/LW

MDX-M690)

Tuning range MW: 531 – 1,602 kHz

RM-X4S

LW: 153 – 279 kHz

BUS cable (supplied with

Aerial terminal External aerial connector

an RCA pin cord)

Intermediate frequency 10.7 MHz/450 kHz

RC-61 (1 m), RC-62 (2 m)

Sensitivity MW: 30 µV

Optional equipment CD changer (10 discs)

LW: 40 µV

CDX-848X, CDX-646

CD changer (6 discs)

Power amplifier section

CDX-T68X, CDX-T67

Outputs Speaker outputs

MD changer (6 discs)

(sure seal connectors)

MDX-65

Speaker impedance 4 – 8 ohms

Source selector

Maximum power output 52 W × 4 (at 4 ohms)

XA-C30

DAB tuner unit

XT-100DAB

General

Outputs Audio outputs (front/rear)

Subwoofer output (mono)

Note

Power aerial relay control

This unit cannot be connected to a digital preamplifier

lead

or an equalizer.

Power amplifier control lead

US and foreign patents licensed from Dolby

Inputs Telephone ATT control lead

Laboratories.

Illumination control lead

BUS control input

Design and specifications are subject to change

connector

without notice.

BUS audio input connector

Remote controller input

connector (CDX-M670,

MDX-690)

Aerial input connector

AUX IN connector (CDX-

M770 only)

38

The rotary commander RM-X5S cannot be

Troubleshooting

operated.

Rotate the dial at the bottom of the rotary

The following checklist will help you remedy

commander until it can be operated.

problems you may encounter with your unit.

Before going through the checklist below, check

CD/MD playback

the connection and operating procedures.

A disc cannot be loaded.

• Another CD/MD is already loaded.

General

• The CD/MD is forcibly inserted upside down

No sound.

or in the wrong way.

• Press the (+) side of (VOL) to adjust the

Playback does not begin.

volume.

• Dirty or defective disc.

• Cancel the ATT function.

• CD-R that is not finalized, or a CD-RW.

• Set the fader control to the centre position for

• You tried to playback a CD-R not designed

a 2-speaker system.

for audio use.

The message “LP” appears in the display.

• Some CD-Rs may not play due to its

MDLP tracks cannot be played back. (MDX-

recording equipment or the disc condition.

M690 only)

A disc is automatically ejected.

An optional MD unit does not conform to

The ambient temperature exceeds 50°C.

MDLP play back.

t Use this unit to playback the MDLP tracks.

CD will not be ejected.

The operation buttons do not function.

The contents of the memory have been

Press the reset button.

erased.

• The reset button has been pressed.

The sound skips from vibration.

• Store again into the memory.

• (CDX-M770, CDX-M670)

• The power cord or battery has been

The unit is installed at an angle of more than

disconnected.

60°.

• The power connecting cord is not connected

(MDX-M690)

properly.

The unit is installed at an angle of more than

20°.

No beep sound.

• The unit is not installed in a sturdy part of

The beep sound is cancelled (page 34).

the car.

Indications disappear from/do not appear in

The sound skips.

the display.

Dirty or defective disc.

• The clock display disappears if you press

(OFF) for 2 seconds.

Cannot turn off the “--------” indication.

t Press (OFF) again for 2 seconds to

You entered the name edit mode.

display the clock.

t Press (LIST) for 2 seconds.

• Remove the front panel and clean the

connectors. See “Cleaning the connectors”

Radio reception

(page 36) for details.

Preset tuning is not possible.

Stored stations and correct time are erased.

• Store the correct frequency in the memory.

The fuse has blown.

• The broadcast signal is too weak.

Makes noise when the ignition key is in the

ON, ACC, or OFF position.

continue to next page t

The leads are not matched correctly with the

car’s accessory power connector.

No power is being supplied to the unit.

• Check the connection. If everything is in

order, check the fuse.

• The car does not have an ACC position.

t Press (SOURCE) (or insert a disc) to turn

on the unit.

The power is continuously supplied to the

unit.

The car does not have an ACC position.

The power aerial does not extend.

The power aerial does not have a relay box.

39

The stations cannot be received.

DSP functions (CDX-M770 only)

The sound is hampered by noises.

No sound, or sound is too low.

• Connect a power aerial control lead (blue) or

The volume of the speakers may have been

accessory power supply lead (red) to the

automatically lowered in order to maximize

power supply lead of a car’s aerial booster.

the effect of the listening position adjustment.

(Only when your car has built-in FM/MW/

t Press < or , to adjust the balance. The

LW aerial in the rear/side glass.)

speaker balance can be set separately for

• Check the connection of the car aerial.

DSP on mode and DSP off mode (page 29).

• The auto aerial will not go up.

t Check the connection of the power aerial

control lead.

• Check the frequency.

• When the DSO mode is on, the sound is

sometimes hampered by noises.

t Set the DSO mode to off (page 27)

(CDX-M770), (page 27) (CDX-M670,

MDX-M690).

Automatic tuning is not possible.

• The local seek mode is set to “on.”

t Set the local seek mode to “off” (page

34).

• The broadcast signal is too weak.

t Perform manual tuning.

The “ST” indication flashes.

• Tune in the frequency accurately.

• The broadcast signal is too weak.

t Set to the monaural reception mode (page

34).

A programme broadcast in stereo is heard

in monaural.

• The unit is in monaural reception mode.

t Cancel monaural reception mode (page

34).

RDS

The Seek starts after a few seconds of

listening.

The station is non-TP or has weak signal.

t Press (AF) or (TA) repeatedly until “AF

off” or “TA off” appears.

No traffic announcements.

• Activate “TA.”

• The station does not broadcast any traffic

announcements despite being TP.

t Tune in another station.

PTY displays “--------.”

• The current station is not an RDS station.

• RDS data has not been received.

• The station does not specify the programme

type.

40

If these solutions do not help improve the

situation, consult your nearest Sony dealer.

Error displays/Messages

Messages

Error displays

LCL Seek +/–

(For this unit and optional CD/MD changers)

The Local Seek mode is on during automatic

The following indications will flash for about 5

tuning (page 16).

seconds, and an alarm sound will be heard.

NO AF

1

Blank*

There is no alternative frequency for the

2

No tracks have been recorded on an MD*

.

current station.

t Play an MD with recorded tracks on it.

“” or “”

1

Error*

You have reached the beginning or the end of

2

• A CD is dirty or inserted upside down*

.

the disc and you cannot go any further.

t Clean or insert the CD correctly.

• A CD/MD cannot play because of some

2

problem*

.

t Insert another CD/MD.

High Temp

The ambient temperature is more than 50°C.

t Wait until the temperature goes down

below 50°C.

NO Disc

No disc is inserted in the CD/MD unit.

t Insert discs in the CD/MD unit.

NO Mag

The disc magazine is not inserted in the CD/

MD unit.

t Insert the magazine in the CD/MD unit.

Not Ready

The lid of the MD unit is open or the MDs are

not inserted properly.

t Close the lid or insert the MDs properly.

Push Reset

The CD/MD unit cannot be operated because

of some problem.

t Press the reset button on the unit.

*1 When the CD/MD changer is connected to the unit,

the disc number of the CD or MD appears in the

display.

*2 The disc number of the disc causing the error

appears in the display.

41