VDO Dayton CD 2537 U ユーザーズマニュアル

28

Maybe, it will happen that your headunit will not 

function as you expected it to be. Before calling 

for service, please read this user manual and 

review carefully the setting values. You may find 

that a function cannot work properly with the 

values you defined. Nevertheless, if you need to 

send your headunit for reparation, always send 

it complete with detachable front (do not try to 

open the headunit to service it by yourself).

In the case whereby your headunit freezes, 

please flip down the front and use a pen or pen-

cil to poke the "RESET" hole.

The headunit does not function.

Make sure that the headunit is well inserted 

in the dashboard (see MOUNTING).

Make sure that the headunit is well connect-

ed (see INSTALLATION).

Switch on the headunit again.

The headunit does not function and the dis-

play screen does not light up.

Check the fuse (see INSTALLATION).

The display screen lights up but the headunit 

gives no sound (or only a whistle).

Increase the volume; and if you are listening 

to the radio station, move to an area where 

the reception of the station is better.

Check the antenna and its connection (see 

INSTALLATION).

Check if the radio station search is finished.

Verify the speakers' connections (see IN-

STALLATION) and the speakers balance 

(SOUND SETTINGS).

There is no sound from the loudspeak-

ers (front and rear) from any of the 

sources.

There is no sound from the sub woofer 

after having connected an external am-

plifier.

Verify your external amplifier installation.

Check the connection of the external 

amplifier to the PREAMP OUT (see 

INSTALLATION).



























The sound level is too low during traffic an-

nouncements.

Adjust the volume setting for traffic an-

nouncements (see "Presetting TA Volume").

During playback, the headunit does not func-

tion and displays “CD ERROR”.

Make sure that the CD is properly inserted 

into the headunit.

Check whether the headunit contains a CD.

Make sure that the CD is correctly inserted; 

not dirty, exotic or damaged; and the front of 

the headunit is properly shut.

The headunit cannot connect to the MP3 player / 

USB / SD / MMC device.

The inserted device must use the Microsoft 

Windows FAT System.

The headunit does not support portable USB 

hard disk (note that the sourcing current of 

the portable hard disk is beyond the headun-

it's capability)

Check the encoding formats of the songs on 

your device (see "Notes on MP3" and "Notes 

on WMA").















