SONY CDX-RA750 - CD Player

CDX-RA750 - CD Player SONY - Free user manual and instructions

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Product Type Car CD Player
Brand Sony
Model CDX-RA750
Dimensions (W x H x D) 178 mm x 50 mm x 160 mm
Weight 1.2 kg
Power Supply 12 V DC (negative ground)
Maximum Power Output 4 x 50 W
Playable Discs CD, CD-R, CD-RW
Radio Bands FM/AM
Audio Features MP3 playback, Bass Boost, EQ presets
Display Type LCD with backlight
Remote Control Yes (wired or optional wireless)
Detachable Faceplate Yes
Preamp Outputs 2 pairs (front/rear)
Cleaning Instructions Wipe with soft dry cloth; do not use solvents
Safety Precautions Avoid moisture; disconnect battery before installation
Spare Parts Availability Contact Sony support or authorized dealers
General Information Built-in clock, random/repeat play, CD text support

Frequently Asked Questions - CDX-RA750 SONY

How do I install the CDX-RA750 in my car?
Refer to the installation guide. Typically, connect the wiring harness to your car's ISO connectors, mount the unit using the supplied brackets, and slide it into the DIN slot. Ensure the negative battery terminal is disconnected during installation.
Can this player play MP3 CDs?
Yes, the Sony CDX-RA750 supports playback of MP3 files recorded on CD-R and CD-RW discs.
How do I set the clock?
Press and hold the 'DSPL' button for a few seconds until the hour digits flash. Use the volume knob or preset buttons to adjust the hour, press 'DSPL' again to set minutes, then press and hold 'DSPL' to save.
Why is the CD not playing?
Check if the disc is inserted correctly label-side up. Ensure the disc is not scratched or dirty. Also verify that the unit is receiving power and the faceplate is properly attached.
How do I detach the faceplate?
Press the 'SRC' or 'OFF' button to turn off the unit. Then press the 'RELEASE' button located on the faceplate and pull it towards you. Store it in the supplied case for security.
What is the maximum power output?
The CDX-RA750 has a maximum power output of 50 watts per channel (4 channels total). RMS power is typically lower.
Can I connect an external amplifier?
Yes, the unit has preamp output jacks (front and rear) for connecting external amplifiers.
How do I clean the lens?
Use a commercially available CD lens cleaner disc. Do not attempt to clean the lens manually, as it may cause damage.
What should I do if the unit gets wet?
Immediately turn off the unit and disconnect power. Allow it to dry completely before using again. Persistent moisture may cause internal damage.
Where can I get a replacement remote control?
Contact Sony customer support or visit the Sony website. You can also find compatible remotes from third-party sellers.

User questions about CDX-RA750 SONY

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Download the instructions for your CD Player in PDF format for free! Find your manual CDX-RA750 - SONY and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. CDX-RA750 by SONY.

USER MANUAL CDX-RA750 SONY

FM/AM Compact Disc Player

Operating Instructions ____ GB

To cancel the demonstration (DEMO) display, see page 10.

Thank you for purchasing this Sony Compact Disc Player. You can enjoy your drive with the following functions.

- CD playback

You can play CD-DA (also containing CD TEXT*), CD-R/CD-RW (MP3/WMA files also containing Multi Session (page 12)) and ATRAC CD (ATRAC3 and ATRAC3plus format (page 13)).

Type of discs Label on the disc
CD-DASONY CDX-RA750 - - CD playback - 1SONY CDX-RA750 - - CD playback - 2
MP3WMAATRAC CDSONY CDX-RA750 - - CD playback - 3SONY CDX-RA750 - - CD playback - 4
SONY CDX-RA750 - - CD playback - 5SONY CDX-RA750 - - CD playback - 6

- Radio reception

  • You can store up to 6 stations per band (FM1, FM2, FM3, AM1 and AM2).
  • BTM (Best Tuning Memory): the unit selects strong signal stations and stores them.

- Sound adjustment

  • EQ3 parametric: You can choose any one of 7 preset equalizer curves, and adjust as desired.
  • DSO (Dynamic Soundstage Organizer): creates a more ambient sound field, using virtual speaker synthesis, to enhance the sound of speakers, even if they are installed low in the door.
  • BBE MP: improves digitally compressed sound such as MP3.

- Image setting

You can set various display images on the unit.

- Space Producer: creates animated on-screen patterns in time with the music.

- Optional unit operation

You can also control optional CD/MD changers and optional Sony portable devices in addition to playing with this unit.

* A CD TEXT disc is a CD-DA that includes information such as disc, artist and track name.

For installation and connections, see the supplied installation/connections manual.

Warning if your car's ignition has no ACC position

After turning the ignition off, be sure to press and hold OFF on the unit until the display disappears.

Otherwise, the display does not turn off and this causes battery drain.

CLASS 1 LASER PRODUCT

This label is located on the bottom of the chassis.

BBE®MP DIGITAL

Manufactured under license from BBE Sound, Inc. The BBE MP process

improves digitally compressed sound, such as MP3, by restoring and enhancing the higher harmonics lost through compression. BBE MP works by generating even-order harmonics from the source material, effectively recovering warmth, detail and nuance.

SonicStage and its logo are trademarks of Sony Corporation.

ATRAC, ATRAC3, ATRAC3plus and their logos are trademarks of Sony Corporation.

SONY CDX-RA750 - BBE®MP DIGITAL - 1

Microsoft, Windows Media, and the Windows logo are trademarks or registered trademarks of Microsoft

Corporation in the United States and/or other countries.

Table of Contents

Getting Started

Resetting the unit. 4

Setting the clock 4

Detaching the front panel 4

Attaching the front panel 4

Inserting the disc in the unit 5

Ejecting the disc 5

Location of controls and basic operations

Main unit. 6

Card remote commander RM-X151 ..... 6

CD

Display items 8

Repeat and shuffle play....8

Radio

Storing and receiving stations 8

Storing automatically — BTM ..... 8

Storing manually....8

Receiving the stored stations 8

Tuning automatically 8

Other functions

Changing the sound settings 9

Adjusting the sound characteristics ..... 9

Customizing the equalizer curve — EQ3 .... 9

Adjusting setup items — SET 9

Using optional equipment.... 10

CD/MD changer 10

Rotary commander RM-X4S ..... 11

Auxiliary audio equipment.... 11

Additional Information

Precautions 12

Notes on discs 12

About MP3/WMA files 12

About ATRAC CD.... 13

Maintenance 13

Removing the unit. 14

Specifications 14

Troubleshooting 15

Error displays/Messages.... 17

Getting Started

Resetting the unit

Before operating the unit for the first time, or after replacing the car battery or changing the connections, you must reset the unit.

Detach the front panel and press the RESET button with a pointed object, such as a ballpoint pen.

RESET button

Note

Pressing the RESET button will erase the clock setting and some stored contents.

Setting the clock

The clock uses a 12-hour digital indication.

1 Press and hold SEL.

The setup display appears.

2 Press SEL repeatedly until "Clock Adjust" appears.

3 Press DSPL.

The hour indication is selected.

4 Press the volume control up or down to set the hour and minute.

To move the digital indication, press DSPL.

5 Press SEL.

The setup is complete and the clock starts.

With the card remote commander

In step 4, to set the hour and minute, press or .

Detaching the front panel

You can detach the front panel of this unit to prevent theft.

Caution alarm

If you turn the ignition switch to the OFF position without detaching the front panel, the caution alarm will sound for a few seconds. The alarm will only sound if the built-in amplifier is used.

1 Press OFF.

The unit is turned off.

2 Press , then pull it off towards you.

OFF

Notes

  • Do not drop or put excessive pressure on the front panel and display window.
  • Do not subject the front panel to heat/high temperature or moisture. Avoid leaving it in a parked car or on a dashboard/rear tray.

Attaching the front panel

Engage part Ⓐ of the front panel with part Ⓑ of the unit, as illustrated, and push the left side into position until it clicks.

Diagram showing two views of a device with labeled components A and B, likely illustrating a front view and internal structure.

Note

Do not put anything on the inner surface of the front panel.

Inserting the disc in the unit

1 Press ≠.

SONY CDX-RA750 - Press ≠. - 1

natural_image Diagram of a device rear panel with a central display and directional arrow (no text or symbols)

The shutter opens automatically.

2 Insert the disc label side up.

SONY CDX-RA750 - Insert the disc label side up. - 1

natural_image Diagram of a CD or DVD disc being inserted into a rectangular device (no text or symbols visible)

The shutter closes automatically and playback starts.

Ejecting the disc

1 Press ≠.

SONY CDX-RA750 - Press ≠. - 1

natural_image Diagram of a device rear panel with labeled ports and an arrow indicating direction (no text or symbols present)

The shutter opens automatically.

SONY CDX-RA750 - Press ≠. - 2

natural_image Diagram of a car air conditioner unit with airflow direction arrow (no text or symbols)

The disc is ejected.

Note

The shutter will close automatically if no operation is performed for 15 seconds.

Location of controls and basic operations

Main unit
SONY CDX-RA750 - Location of controls and basic operations - 1

flowchart
graph TD
    A["1"] --> B["ATT"]
    B --> C["IMAGE"]
    C --> D["2"]
    D --> E["3"]
    E --> F["4"]
    F --> G["5"]
    G --> H["6"]
    H --> I["7"]
    I --> J["8"]
    J --> K["9"]
    K --> L["10"]
    L --> M["11"]
    M --> N["12"]
    N --> O["13"]
    O --> P["14"]
    P --> Q["SOURCE MODE"]
    Q --> R["GP/ALBM + 1 2 3 4 5 6"]
    R --> S["BBE MP PAUSERP SHUF"]
    S --> T["BTM SENS SCRL DSPL"]
    T --> U["OFF"]
    U --> V["CDX-RA750"]
    V --> W["15"]
    W --> X["16"]
    X --> Y["17"]
    Y --> Z["18"]
    Z --> AA["19"]
    AA --> AB["20"]
    AB --> AC["21"]
    AC --> AD["22"]

Card remote commander RM-X151
22 12 23 OFF SOURCE ATT SEL MODE 2 4 13 + - DSPL SCRL 25 19 26 1 2 3 4 5 6 + - VOL 24

Refer to the pages listed for details. The corresponding buttons on the card remote commander control the same functions as those on the unit.

1 Volume (+/-) control 9

To adjust volume.

2ATT (attenuate) button

To attenuate the sound. To cancel, press again.

③ IMAGE button 2

To select the display image.

Movie mode 1-3 → Spectrum analyzer mode 1-5 → Space Producer mode → Wall paper mode 1-3 → normal play/reception mode

4 SEL (select) button

To select setup items.

5 Display window

6Disc slot 5

To insert the disc.

7 EQ3 (equalizer) button 9

To select an equalizer type (Xplod, Vocal, Edge, Cruise, Space, Gravity, Custom or off).

8 DSO button 2

To select the DSO mode (1, 2, 3 or off). The larger the number, the more enhanced the effect.

9▲ (eject) button 5

To eject the disc/open the shutter.

10▶▶▶▶▶▶▶▶▶▶▶▶ (+/-) control

CD:

To skip tracks (press); skip tracks continuously (press, then press again within about 1 second and hold); reverse/fast-forward a track (press and hold).

Radio:

To tune in stations automatically (press); find a station manually (press and hold).

11 (front panel release) button 4

12 SOURCE button

To power on; change the source (Radio/CD/MD*1/AUX).

13 MODE button 8, 10

To select the radio band (FM/AM)/select the unit ^*2 .

14 RESET button (located behind the front panel) 4

15 Number buttons

CD/MD*1:

①/②: GP*3/ALBM*4-/+5

To skip groups/albums (press); skip groups/albums continuously (press and hold).

③: REP 8, 10

④: SHUF 8, 10

⑤: BBE MP*6 2

To activate the BBE MP function, set “BBE MP on.” To cancel, set “BBE MP off.”

⑥: PAUSE* 6

To pause playback. To cancel, press again.

Radio:

To receive stored stations (press); store stations (press and hold).

16 Frequency select switch (located on the bottom of the unit)

See “Frequency Select switch” in the supplied installation/connections manual.

17 BTM button 8

To start the BTM function (press and hold).

18SENS button

To improve weak reception: LOCAL/MONO.

19 SCRL (scroll) button 8

To scroll the display item.

20 DSPL (display) button 8

To change display items.

21 Receptor for the card remote commander

22 OFF button

To power off; stop the source.

The following buttons on the card remote commander have also different buttons/functions from the unit.

23 ← (I◄◄) / → (►►I) buttons

To control CD/radio, the same as the ▶▶▶▶▶/I◀◀◀◀ control on the unit.

24 VOL (volume) +/- button

To adjust volume.

25 ↑ (+)/↓ (-) buttons

To control CD, the same as ②/① on the unit.

26 Number buttons

To receive stored stations (press); store stations (press and hold).

*1 When an MD changer is connected.
*2 When a CD/MD changer is connected.
*3 When an ATRAC CD is played.
*4 When an MP3/WMA is played.
*5 If the changer is connected, the operation is different, see page 10.
*6 When playing back on this unit.

Note

If the unit is turned off and the display disappears, it cannot be operated with the card remote commander unless SOURCE on the unit is pressed, or a disc is inserted to activate the unit first.

Tip

For details on how to replace the battery, see "Replacing the lithium battery of the card remote commander" on page 13.

CD

For details on selecting a CD/MD changer, see page 10.

Display items

Example: when you select the normal play mode by pressing IMAGE repeatedly (page 6).

CD A B C

A Source, MP3/WMA/ATRAC3plus indication
BClock
Track number/Elapsed playing time, Disc/ artist name, Album/group number*1, Album/ group name, Track name, Text information*2

*1 Album/group number is displayed only when the album/group is changed.
*2 When playing an MP3, ID3 tag is displayed, when playing ATRAC CD, text information written by SonicStage, etc., is displayed, and when playing WMA, WMA tag is displayed.

To change display items Ⓓ, press DSPL; scroll display items Ⓓ, press SCRL or set "Auto Scroll on" (page 10).

Tip

Displayed items will differ, depending on the disc type, recorded format and settings. For details on MP3/WMA, see page 12; ATRAC CD, see page 13.

Repeat and shuffle play

1 During playback, press ③ (REP) or ④ (SHUF) repeatedly until the desired setting appears.

Select To play

Repeat Track track repeatedly.
Repeat Album*1album repeatedly.
Repeat Group*2group repeatedly.
Shuffle Album*1album in random order.
Shuffle Group*2group in random order.
Shuffle Disc disc in random order.

*1 When an MP3/WMA is played.
*2 When an ATRAC CD is played.

To return to normal play mode, select “Repeat off” or “Shuffle off.”

Radio

Storing and receiving stations

Caution

When tuning in stations while driving, use Best Tuning Memory (BTM) to prevent an accident.

Storing automatically — BTM

1 Press SOURCE repeatedly until "TUNER" appears.

To change the band, press MODE repeatedly. You can select from FM1, FM2, FM3, AM1 or AM2.

2 Press and hold BTM until "BTM" flashes.

The unit stores stations in order of frequency on the number buttons.

A beep sounds when the setting is stored.

Storing manually

1 While receiving the station that you want to store, press and hold a number button (① to ⑥) until "MEM" appears.

The number button indication appears in the display.

Note

If you try to store another station on the same number button, the previously stored station will be replaced.

Receiving the stored stations

1 Select the band, then press a number button (① to ⑥).

Tuning automatically

1 Select the band, then press the ▶▶▶▶▶I/I◀◀◀ control up or down to search for the station.

Scanning stops when the unit receives a station. Repeat this procedure until the desired station is received.

Tip

If you know the frequency of the station you want to listen to, press and hold the ▶▶▶▶I/I◀◀◀◀ control to quickly locate the approximate frequency, then press the ▶▶▶▶I/I◀◀◀◀ control up or down repeatedly to fine adjust to the desired frequency (manual tuning).

Other functions

Changing the sound settings

Adjusting the sound characteristics

You can adjust the balance, fader, and subwoofer volume.

1 Press SEL repeatedly until "Balance," "Fader" or "Sub Woofer" appears.

The item changes as follows:

equalizer setting ^*1 →

Balance (left-right) →

Fader (rear-front) →

*1 When EQ3 is activated (page 9).
*2 “−∞” is displayed at the lowest setting, and can be adjusted up to 20 steps.
*3 When AUX source is activated (page 11).

2 Press the volume control up or down repeatedly to adjust the selected item.

After 3 seconds, the setting is complete and the display returns to normal play/reception mode.

With the card remote commander

In step 2, to adjust the selected item, press ←, ↑, → or ↓.

Customizing the equalizer curve — EQ3

“Custom” of EQ3 allows you to make your own equalizer settings.

1 Select a source, then press EQ3 repeatedly to select "Custom."
2 Press SEL repeatedly until "LOW Center Frequency" appears.
3 Press the volume control up or down repeatedly to select the desired frequency.

LOW Frequency can be set to 60 Hz or 100 Hz.

4 Press SEL.
5 Press the volume control up or down repeatedly to adjust the volume level.

The volume level is adjustable in 1 dB steps, from -10 dB to +10 dB.

EBIT GDD

6 Press SEL.

Repeat steps 3 to 6 to adjust “MID” and “HIGH.”

MID and HIGH frequencies differ but are set in the same way (MID: 500 Hz or 1.0 kHz; HIGH: 10.0 kHz or 12.5 kHz).

To restore the factory-set equalizer curve, press and hold SEL before the setting is complete.

After 3 seconds, the setting is complete and the display returns to normal play/reception mode.

Tip

Other equalizer types are also adjustable.

With the card remote commander

In step 3 and 5, to adjust the selected item, press , , or .

Adjusting setup items — SET

1 Press and hold SEL.
The setup display appears.
2 Press SEL repeatedly until the desired item appears.
3 Press the volume control up or down to select the setting (example "on" or "off").
4 Press and hold SEL.

The setup is complete and the display returns to normal play/reception mode.

Note

Displayed items will differ, depending on the source and setting.

With the card remote commander

In step 3, to select the setting, press ← or →.

The following items can be set (follow the page reference for details):

“●” indicates the default settings.

Clock Adjust (page 4)

Beep

To set “on” (●) or “off.”

continue to next page →

Auto Image

Auto Image mode automatically steps (every 10 seconds) through the display images.

  • “All” (●): to step repeatedly through the display images in all display modes.
  • “off”: to not change the image automatically.
  • “SA”: to step repeatedly through the display images of Spectrum analyzer mode.
  • “Movie”: to step repeatedly through the display images of Movie mode.

Info (Infomation)

To display the items (depending on the source, etc.).

  • “Simple” (●): to not display any items.
  • “All”: to display all items.
  • “Clear”: to have items automatically disappear.

AUX-Audio\*

To turn the AUX source display “on” (●) or “off” (page 11).

Dimmer

To change the brightness of the display.

  • “Auto”( to dim the display automatically when you turn lights on.
  • “on”: to dim the display.
  • “off”: to deactivate the dimmer.

Motion DSPL (Motion Display)

To select the Motion Display mode.

  • “on” (●): to show moving patterns and spectrum analyser.
  • “off”: to deactivate the Motion Display.

Demo\* (Demonstration)

To set “on” (●) or “off.”

Auto Scroll

To scroll long displayed item automatically when the disc/album/group/track is changed.

  • “on”: to scroll.
  • “off” (●): to not scroll.

LPF (Low Pass Filter)

To select the subwoofer cut-off frequency: "off"

(●), “125Hz” or “78Hz.”

* When the unit is turned off.

Using optional equipment

CD/MD changer

Selecting the changer

1 Press SOURCE repeatedly until "CD" or "MD" appears.

2 Press MODE repeatedly until the desired changer appears.

Unit number, MP3 indication*1
LP2/LP4 indication*2 #CD 9:29 #CBS 10:01 2:58 Disc/Album number

Playback starts.

*1 When MP3 is played.
*2 When MDLP disc is played.

Skipping albums and discs

1 During playback, press ①/② (GP/ALBM -/+).

To skip Press ①/②

album and release (hold for a moment).

album within 2 seconds of first continuously releasing.

discs repeatedly.

discs then, press again within 2 continuously seconds and hold.

Repeat and shuffle play

1 During playback, press ③ (REP) or ④ (SHUF) repeatedly until the desired setting appears.

Select To play

Repeat Disc ^*1 disc repeatedly.

Shuffle tracks in the changer in random Changer ^*1 order.

Shuffle All ^*2 tracks in all units in random order.

*1 When one or more CD/MD changers are connected.
*2 When one or more CD changers, or two or more MD changers are connected.

To return to normal play mode, select “Repeat off” or “Shuffle off.”

Tip

"Shuffle All" will not shuffle tracks between CD units and MD changers.

Rotary commander RM-X4S

Attaching the label

Attach the indication label depending on how you mount the rotary commander.

SEL MODE DSPL DS PL MODE SEL

Location of controls

The corresponding buttons on the rotary commander control the same functions as those on this unit.

PRESET/ DISC SOURCE VOL SEEK/AMS SEL ATT MODE DSPL OFF

The following controls on the rotary commander require a different operation from the unit.

- PRESET/DISC control

The same as GP/ALBM -/+ on the unit (push in and rotate).

• VOL (volume) control

The same as the volume control on the unit (rotate).

- SEEK/AMS control

The same as the ▶▶▶▶/|◀◀◀◀ control on the unit (rotate, or rotate and hold).

Changing the operative direction

The operative direction of the controls is factory-set as shown below.

To increase To decrease

If you need to mount the rotary commander on the right hand side of the steering column, you can reverse the operative direction.

1 While pushing the VOL control, press and hold SEL.

SONY CDX-RA750 - Changing the operative direction - 2

natural_image Line drawing of hands using a handheld tool to interact with a button (no text or symbols present)

Auxiliary audio equipment

You can connect optional Sony portable devices to the BUS AUDIO IN/AUX IN terminal on the unit. If the changer or other device is not connected to the terminal, the unit allows you to listen to the portable device on your car speakers.

Note

When connecting a portable device, be sure BUS CONTROL IN is not connected. If a device is connected to BUS CONTROL IN, "AUX" cannot be selected by SOURCE.

Tip

When connecting both a portable device and a changer, use the optional AUX-IN selector.

Selecting auxiliary equipment

1 Press SOURCE repeatedly until "AUX" appears. Operate by the portable device itself.

Adjust the volume level

Be sure to adjust the volume for each connected audio device before playback.

1 Turn down the volume on the unit.

2 Press SOURCE repeatedly until "AUX" appears.

3 Start playback of the portable audio device at a moderate volume.

4 Set your usual listening volume on the unit.

5 Press SEL repeatedly until "AUX Level" appears, and press the volume control up or down to adjust the input level (±6 dB).

Additional Information

Precautions

  • If your car has been parked in direct sunlight, allow the unit to cool off before operating it.
  • Power aerial will extend automatically while the unit is operating.

Moisture condensation

On a rainy day or in a very damp area, moisture condensation may occur inside the lenses and display of the unit. Should this occur, the unit will not operate properly. In such a case, remove the disc and wait for about an hour until the moisture has evaporated.

To maintain high sound quality

Be careful not to splash juice or other soft drinks onto the unit or discs.

Notes on discs

  • To keep a disc clean, do not touch its surface. Handle the disc by its edge.
  • Keep your discs in their cases or disc magazines when not in use.
  • Do not subject discs to heat/high temperature. Avoid leaving them in a parked car or on a dashboard/rear tray.
  • Do not attach labels, or use discs with sticky ink/residue. Such discs may stop spinning when used, causing a malfunction, or may ruin the disc.

SONY CDX-RA750 - Notes on discs - 1

  • Do not use any discs with labels or stickers attached.
    The following malfunctions may result from using such discs:
  • Inability to eject a disc (due to a label or sticker peeling off and jamming the eject mechanism).
  • Inability to read audio data correctly (e.g., playback skipping, or no playback) due to heat shrinking of a sticker or label causing a disc to warp.
  • Discs with non-standard shapes (e.g., heart, square, star) cannot be played on this unit. Attempting to do so may damage the unit. Do not use such discs.
  • You cannot play 8 cm CDs.

- Before playing, clean the discs with a commercially available cleaning cloth. Wipe each disc from the centre out. Do not use solvents such as benzine, thinner, commercially available cleaners, or antistatic spray intended for analogue discs.

SONY CDX-RA750 - Notes on discs - 2

natural_image Illustration of hands holding a CD or DVD disc with arrows indicating rotation (no text or symbols)

Notes on CD-R/CD-RW discs

  • Some CD-Rs/CD-RWs (depending on the equipment used for its recording or the condition of the disc) may not play on this unit.
  • You cannot play a CD-R/a CD-RW that is not finalized.

This product is designed to play back discs that conform to the Compact Disc (CD) standard. Recently, various music discs encoded with copyright protection technologies are marketed by some record companies. Please be aware that among those discs, there are some that do not conform to the CD standard and may not be playable by this product.

Note on DualDiscs

A DualDisc is a two sided disc product which mates DVD recorded material on one side with digital audio material on the other side. However, since the audio material side does not conform to the Compact Disc (CD) standard, playback on this product is not guaranteed.

About MP3/WMA files

MP3, which stands for MPEG-1 Audio Layer-3, is a music file compression format standard. It compresses audio CD data to approximately 1/10 of its original size.

WMA, which stands for Windows Media Audio, is another music file compression format standard. It compresses audio CD data to approximately 1/22* of its original size.

* only for 64 kbps

  • The unit is compatible with the ISO 9660 level 1/level 2 format, Joliet/Romeo in the expansion format, and Multi Session.
    • The maximum number of:
    – folders (albums): 150 (including root and empty folders).
  • MP3/WMA files (tracks) and folders contained in a disc: 300 (if a folder/file names contain many characters, this number may become less than 300).
    – displayable characters for a folder/file name is 32 (Joliet), or 64 (Romeo).

- ID3 tag versions 1.0, 1.1, 2.2, 2.3 and 2.4 apply to MP3 only. ID3 tag is 15/30 characters (1.0 and 1.1), or 63/126 characters (2.2, 2.3 and 2.4). WMA tag is 63 characters.

Playback order of MP3/WMA files

SONY CDX-RA750 - Playback order of MP3/WMA files - 1

flowchart
graph TD
    A[" "] --> B["1"]
    B --> C["1"]
    B --> D["2"]
    D --> E["3"]
    D --> F["4"]
    B --> G["1"]
    B --> H["2"]
    D --> I["3"]
    D --> J["4"]
    D --> K["5"]
    D --> L["6"]
    D --> M["7"]
    style A fill:#fff,stroke:#000
    style B fill:#ccc,stroke:#000
    style C fill:#ccc,stroke:#000
    style D fill:#ccc,stroke:#000
    style E fill:#ccc,stroke:#000
    style F fill:#ccc,stroke:#000
    style G fill:#ccc,stroke:#000
    style H fill:#ccc,stroke:#000
    style I fill:#ccc,stroke:#000
    style J fill:#ccc,stroke:#000
    style K fill:#ccc,stroke:#000
    style L fill:#ccc,stroke:#000
    style M fill:#ccc,stroke:#000

Notes

  • When naming an MP3 file/WMA file, be sure to add the file extension “.mp3”/“.wma” to the file name.
  • During playback of a VBR (variable bit rate) MP3/WMA file or fast-forward/reverse, elapsed playing time may not display accurately.
  • When the disc is recorded in Multi Session, only the first track of the first session format is recognized and played (any other format is skipped). The priority of the format is CD-DA, ATRAC CD and MP3/WMA.

  • When the first track is a CD-DA, only CD-DA of the first session is played.

  • When the first track is not a CD-DA, an ATRAC CD or MP3/WMA session is played. If the disc has no data in any of these formats, "NO Music" is displayed.

Notes on MP3

  • Be sure to finalize the disc before using on the unit.
  • If you play a high-bit-rate MP3, such as 320 kbps, sound may be intermittent.

Notes on WMA

  • Files made with lossless compression are not playable.
  • Files protected by copyright are not playable.

About ATRAC CD

ATRAC3plus format

ATRAC3, which stands for Adaptive Transform Acoustic Coding3, is audio compression technology. It compresses audio CD data to approximately 1/10 of its original size. ATRAC3plus, which is an extended format of ATRAC3, compresses the audio CD data to approximately 1/20 of its original size. The unit accepts both ATRAC3 and ATRAC3plus format.

ATRAC CD

ATRAC CD is recorded audio CD data which is compressed to ATRAC3 or ATRAC3plus format using authorized software, such as SonicStage 2.0 or later, or SonicStage Simple Burner.

• The maximum number of:
– folders (groups): 255
– files (tracks): 999
- The characters for a folder/file name and text information written by SonicStage is displayed.

For details on ATRAC CD, see the SonicStage or SonicStage Simple Burner manual.

Note

Be sure to create the ATRAC CD using authorized software, such as SonicStage 2.0 or later, or SonicStage Simple Burner 1.0 or 1.1.

If you have any questions or problems concerning your unit that are not covered in this manual, consult your nearest Sony dealer.

Maintenance

Replacing the lithium battery of the card remote commander

Under normal conditions, the battery will last approximately 1 year. (The service life may be shorter, depending on the conditions of use.)

When the battery becomes weak, the range of the card remote commander becomes shorter. Replace the battery with a new CR2025 lithium battery. Use of any other battery may present a risk of fire or explosion.

① ② → + side up

Notes on the 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, otherwise a short-circuit may occur.

WARNING

Battery may explode if mistreated.

Do not recharge, disassemble, or dispose of in fire.

continue to next page →

Fuse replacement

When replacing the fuse, be sure to use one matching the amperage rating stated on the original fuse. If the fuse blows, check the power connection and replace the fuse. If the fuse blows again after replacement, there may be an internal malfunction. In such a case, consult your nearest Sony dealer.

SONY CDX-RA750 - Fuse replacement - 1

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Fuse (10A)

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 4) and clean the connectors with a cotton swab dipped in alcohol. Do not apply too much force. Otherwise, the connectors may be damaged.

SONY CDX-RA750 - Cleaning the connectors - 1

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Main unit Back of the front panel

Notes

  • For safety, turn off the ignition before cleaning the connectors, and remove the key from the ignition switch.
  • Never touch the connectors directly with your fingers or with any metal device.

Removing the unit

1 Remove the protection collar.

① Detach the front panel (page 4).
② Pinch both edges of the protection collar, then pull it out.

SONY CDX-RA750 - Remove the protection collar. - 1

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SONY CDX-RA750 - Remove the protection collar. - 2

SONY CDX-RA750 - Remove the protection collar. - 3

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2 Remove the unit.

①Insert both release keys simultaneously until they click.

Hook facing inwards.

② Pull the release keys to unseat the unit.

SONY CDX-RA750 - Remove the unit. - 2

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③ Slide the unit out of the mounting.

SONY CDX-RA750 - Remove the unit. - 3

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Specifications

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

Aerial terminal: External aerial 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

Aerial terminal: External aerial 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)

General

Outputs:

Audio outputs terminal (front/rear)

Subwoofer output terminal (mono)

Power aerial relay control terminal

Power amplifier control terminal

Inputs:

Telephone ATT control terminal

Illumination control terminal

BUS control input terminal

BUS audio input/AUX IN terminal

Remote controller input terminal

Aerial input terminal

Tone controls:

Low: ±10 dB at 60 Hz or 100 Hz (XPLOD)

Mid: ±10 dB at 500 Hz or 1 kHz (XPLOD)

High: ±10 dB at 10 kHz or 12.5 kHz (XPLOD)

Power requirements: 12 V DC car battery (negative earth)

Dimensions: Approx. 178 × 50 × 182 mm (w/h/d)

Mounting dimensions:

Approx. 182 × 53 × 161 mm (w/h/d)

Mass: Approx. 1.2 kg

Supplied accessories:

Card remote commander: RM-X151

Parts for installation and connections (1 set)

Optional accessories/equipment:

Rotary commander: RM-X4S

BUS cable (supplied with an RCA pin cord):

CD changer (10 discs): CDX-757MX, CDX-656X

MD changer (6 discs): MDX-66XLP

Source selector: XA-C30

AUX-IN selector: XA-300

Your dealer may not handle some of the above listed accessories. Please ask the dealer for detailed information.

US and foreign patents licensed from Dolby Laboratories.

MPEG Layer-3 audio coding technology and patents licensed from Fraunhofer IIS and Thomson.

Note

This unit cannot be connected to a digital preamplifier or an equalizer which is Sony BUS system compatible.

Design and specifications are subject to change without notice.

SONY CDX-RA750 - Note - 1

  • Lead-free solder is used for soldering certain parts. (more than 80 %)
  • Halogenated flame retardants are not used in the certain printed wiring boards.
  • Halogenated flame retardants are not used in cabinets.
  • VOC (Volatile Organic Compound)-free vegetable oil based ink is used for printing the carton.
  • Packaging cushions do not use polystyrene foam.

Troubleshooting

The following checklist will help you remedy problems you may encounter with your unit. Before going through the checklist below, check the connection and operating procedures.

General

No power is being supplied to the unit.

  • Check the connection. If everything is in order, check the fuse.
  • If the unit is turned off and the display disappears, it cannot be operated with the remote commander.
    → Turn on the unit.

The power aerial does not extend.

The power aerial does not have a relay box.

No sound.

• The volume is too low.
- The ATT function is activated, or the Telephone ATT function (when the interface cable of a car telephone is connected to the ATT lead) is activated.
- The position of the fader control is not set for a 2-speaker system.
- The CD changer is incompatible with the disc format (MP3/WMA/ATRAC CD).
→ Play back with a Sony MP3 compatible CD changer, or this unit.

No beep sound.

  • The beep sound is cancelled (page 9).
  • An optional power amplifier is connected and you are not using the built-in amplifier.
  • The RESET button has been pressed.
    → Store again into the memory.
  • The power connecting lead or battery has been disconnected.
  • The power connecting lead is not connected properly.

The contents of the memory have been erased.

Stored stations and correct time are erased. The fuse has blown.

Makes noise when the position of the ignition key is switched.

The leads are not matched correctly with the car's accessory power connector.

The display disappears from/does not appear in the display window.

  • The dimmer is set “Dimmer on” (page 10).
  • The display disappears if you press and hold OFF . Press and hold OFF on the unit until the display appears.
    • The connectors are dirty (page 14).

Shutter does not close.

Press and hold ▲ for more than 2 seconds. If the problem persists, consult your nearest Sony dealer.

DSO does not function.

Depending on the type of car interior or type of music, DSO may not have a desirable effect.

The images change automatically.

In Auto Image mode, the selected image cannot be displayed.

→ To display selected image only, set to “Auto Image off” (page 10).

Any display items do not display.

→ Set to “Info All” (page 10).

CD/MD playback

The disc cannot be loaded.

  • Another disc is already loaded.
  • The disc has been forcibly inserted upside down or in the wrong way.

The disc does not playback.

• Defective or dirty disc.
- The CD-Rs/CD-RWs are not for audio use (page 12).

MP3/WMA files cannot be played back.

The disc is incompatible with the MP3/WMA format and version (page 12).

MP3/WMA files take longer to play back than others.

The following discs take a longer time to start playback.

  • a disc recorded with a complicated tree structure.
  • a disc recorded in Multi Session.
  • a disc to which data can be added.

The ATRAC CD cannot play.

  • The disc is not created by authorized software, such as SonicStage or SonicStage Simple Burner.
  • Tracks that are not included in the group cannot be played.

The display items do not scroll.

  • For discs with very many characters, those may not scroll.
  • “Auto Scroll” is set to “off.” → Set “Auto Scroll on” (page 10) or press SCRL.

The sound skips.

• Installation is not correct.
→Install the unit at an angle of less than 45^ in a sturdy part of the car.
• Defective or dirty disc.

The operation buttons do not function.

The disc will not eject.

Press the RESET button (page 4).

Card remote commander does not work.

Close the shutter.

“MS” or “MD” does not appear on the source display when both the optional MGS-X1 and MD changer are connected.

This unit recognizes MGS-X1 as an MD unit. →Press SOURCE until “MS” or “MD” appears, then press MODE repeatedly.

Radio reception

The stations cannot be received.

The sound is hampered by noises.

  • Connect a power aerial control lead (blue) or accessory power supply lead (red) to the power supply lead of a car's aerial booster (only when your car has built-in FM/AM aerial in the rear/side glass).
  • Check the connection of the car aerial.
    • The auto aerial will not go up.
    → 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.
    → Set the DSO mode to “off” (page 7).

Preset tuning is not possible.

  • Store the correct frequency in the memory.
    • The broadcast signal is too weak.

Automatic tuning is not possible.

  • Setting of the local seek mode is not correct.
    → Tuning stops too frequently: Press (SENS) until “Local on” appears.
    → Tuning does not stop at a station: Press (SENS) repeatedly until “Mono on” or “Mono off” (FM), or “Local off” (AM) appears.
  • The broadcast signal is too weak. → Perform manual tuning.

During FM reception, the "ST" indication flashes.

  • Tune in the frequency accurately.
    • The broadcast signal is too weak.
    →Press (SENS) to set the monaural reception mode to “Mono on.”

An FM programme broadcast in stereo is heard in monaural.

The unit is in monaural reception mode. →Press (SENS) until “Mono off” appears.

Error displays/Messages

Blank\*1

Tracks have not been recorded on the MD. ^*2 Play an MD with recorded tracks.

Error\*1

  • The disc is dirty or inserted upside down. ^2
    → Clean or insert the disc correctly.
  • A blank disc has been inserted.
  • The disc cannot play because of some problem. → Insert another disc.

Failure (Illuminates until any button is pressed.) The connection of speakers/amplifiers is incorrect. See the installation guide manual of this model to check the connection.

Load

The changer is loading the disc. →Wait until loading is complete.

Local Seek +/-

The local seek mode is on during automatic tuning.

NO Disc

The disc is not inserted in the CD/MD changer. Insert discs in the changer.

NO Disc Name

A disc name is not written in the track.

NO Group Name

A group name is not written in the track.

NO ID3 Tag

ID3 tag information is not written in the MP3 file.

NO Information

Text information is not written in the ATRAC3/ATRAC3plus or WMA file.

NO Magazine

The disc magazine is not inserted in the CD changer. Insert the magazine in the changer.

NO Music

The disc is not a music file. →Insert a music CD in this unit or MP3 playable changer.

NO Track Name

A track name is not written in the track.

Not Ready

The lid of the MD changer is open or the MDs are not inserted properly. →Close the lid or insert the MDs properly.

Offset

There may be an internal malfunction. →Check the connection. If the error indication remains on in the display, consult your nearest Sony dealer.

Read

The unit is reading all track and album/group information on the disc. →Wait until reading is complete and playback starts automatically. Depending on the disc structure, it may take more than a minute.

Push Reset

The CD unit and CD/MD changer cannot be operated because of some problem.

→ Press the RESET button (page 4).

SONY CDX-RA750 - Push Reset - 1

During reverse or fast-forward, you have reached the beginning or the end of the disc and you cannot go any further.

SONY CDX-RA750 - Push Reset - 2

The character cannot be displayed with the unit.

*1 If an error occurs during playback of a CD or MD, the disc number of the CD or MD does not appear in the display.
*2 The disc number of the disc causing the error appears in the display.

If these solutions do not help improve the situation, consult your nearest Sony dealer.

If you take the unit to be repaired because of CD playback trouble, bring the disc that was used at the time the problem began.

r

SONY CDX-RA750 - Push Reset - 3

POR FAVOR LEA DETALLADAMENTE ESTE MANUAL DE INSTRUCCIONES ANTES DE CONECTAR Y OPERAR ESTE EQUIPO. RECUERDE QUE UN MAL USO DE SU APARATO PODRÍA ANULAR LA GARANTÍA.

Bienvenido

CLASS 1 LASER PRODUCT

Nota

natural_image Diagram of a device rear panel with a central display and directional arrow (no text or symbols)
natural_image Diagram of a CD or DVD disc assembly with an open rear case and internal components (no text or symbols)
natural_image Diagram of a device rear panel with labeled ports and an arrow indicating direction (no text or symbols present)
natural_image Diagram of a device with a circular component and directional arrows, no text or symbols present
natural_image Line drawing of hands using a handheld tool to interact with a device (no text or symbols visible)
natural_image Illustration of hands holding a CD or DVD disc with an arrow indicating rotation (no text or symbols)

Notas sobre discos CD-R/CD-RW

natural_image Line drawing of a hand inserting a card into a folder (no text or symbols)

Unidad principal

SONY CDX-RA750 - Notas sobre discos CD-R/CD-RW - 1

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SONY CDX-RA750 - Notas sobre discos CD-R/CD-RW - 2

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natural_image Isometric line drawing of a rectangular electronic component with a gray arrow indicating direction (no text or symbols)

Especificaciones

Reproductor de CD

注意

切勿在前面板内表面放任何东西。

将光盘插入本机

1 按 ▲。

SONY CDX-RA750 - 按 ▲。 - 1

natural_image Diagram of a device rear panel with a downward arrow and directional arrow, no text or symbols present

百叶窗自动打开。

2 插入光盘 (标签面朝上)。

SONY CDX-RA750 - 插入光盘 (标签面朝上)。 - 1

natural_image Diagram of a CD or DVD disc being inserted into a rectangular case, showing internal components and an arrow indicating the disk (no text or symbols present)

百叶窗自动关闭并开始播放。

退出光盘

1 按 ▲。

SONY CDX-RA750 - 按 ▲。 - 1

natural_image Diagram of a device rear panel with labeled ports and an arrow indicating direction (no text or symbols present)

百叶窗自动打开。

SONY CDX-RA750 - 按 ▲。 - 2

natural_image Diagram of a device with a circular component and directional arrows, no text or symbols present

光盘退出。

注意

控制器位置

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辅助音频设备

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CD-R/CD-RW 光盘的注意事项

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保险丝 (10A)

清洁连接器

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主机

SONY CDX-RA750 - 清洁连接器 - 1

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前面板的背部

注意

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SONY CDX-RA750 - 注意 - 1

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2 取出装置。

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③将本机从安装位置滑出。

SONY CDX-RA750 - 取出装置。 - 1

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规格

CD 播放机部分

信噪比:120 dB

频率响应:10 - 20000 Hz

抖晃率:低于可测限制

调谐器部分

FM

调谐范围:

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Product information

Brand : SONY

Model : CDX-RA750

Category : CD Player