Advice on how to set tuner presets on AlpineCDM 7838R in car stereo CD . Unit has both permanent and switched power supplies, will search stations and hold them when switched off but cannot work out how to set presets. Holding preset button results in station indicator flashing for a few seconds and the becoming permanent but preset not stored.

1. Turn on the CD tuner by pressing the power button.
2. Enter your code numbers to unlock the device if it's necessary.
3. Use the tuning buttons to navigate to the AM or FM radio band.
4. Use the seek or manual tuning buttons to find the desired station.
5. Once you find the desired station, press and hold the preset button to save it to a specific preset location.

If you are having trouble with the CD tuner losing your presets, you may want to try resetting the unit to its factory settings. You can consult your owner's manual

Hello Melissa, if the predefined channels, you can not find them, because they have been deleted, you can retune them and memorize them, then you have the way to do it
Choosing A Radio Station
1. Choose the Tuner function. The system will default to the last station of the tuner was set to before power was
removed.
2. Use the BAND button to choose AM, FM 1 or 2.
3. Use the TUNING UP (+) or DOWN (-) button to select the radio station you want to hear.
• Pressing the +/- button once will move the tuner incrementally.
• Pressing and holding the +/- button will cause the tuner to automatically search for the next frequency
broadcasting clearly. "AUTO" will appear in the display.
4. Press the FM MODE button to switch between FM Stereo and FM Mono for better reception of FM stations. Be
aware, however, that you can only receive FM stations in stereo if they are being broadcast in stereo.
Programming presets
Your system is capable of holding up to 24 preset radio stations in memory (8 from FM1, 8 from FM 2 and 8 from AM)
for as long as the unit is plugged in, and up to two weeks after AC power has been removed.
1. Choose the radio station and band you want to store.
2. Press the MEMORY button to activate the Preset mode.
3. Select a preset number by using the PRESET UP () or DOWN () buttons to select the preset channel you want
to hear.
4. Press MEMORY again to lock in your choice.
After you have finished programming your selections into the system's memory, you need only use the PRESET UP or
DOWN buttons on the unit to search for the desired frequency. On the remote, use the number pad to select the
number of the preset channel you want to hear.
I hope my comment has served you
Greetings Franco Dosil

Hola Melissa, si los canales predefinidos, no puedes encontrarlos, porque se han borrado, puedes resintonizarlos y memorizarlos, a continuaci?n tenes la forma para hacerlo
Elegir una estaci?n de radio
1. Elija la funci?n de sintonizador. El sistema pasar? por defecto a la ?ltima estaci?n en la que se ajust? el sintonizador antes de que se
remoto.
2. Use el bot?n BAND para elegir AM, FM 1 o 2.
3. Use el bot?n TUNING UP (+) o DOWN (-) para seleccionar la estaci?n de radio que desea escuchar.
• Presionando el bot?n +/- una vez mover? el sintonizador de manera incremental.
• Si presiona y mantiene presionado el bot?n +/-, el sintonizador buscar? autom?ticamente la siguiente frecuencia
transmitiendo claramente. "AUTO" aparecer? en la pantalla.
4. Presione el bot?n FM MODE para cambiar entre FM Est?reo y FM Mono para una mejor recepci?n de las estaciones de FM. Ser
Sin embargo, tenga en cuenta que solo puede recibir emisoras de FM en est?reo si se emiten en est?reo.
Programaci?n de presets
Su sistema es capaz de almacenar hasta 24 estaciones de radio preestablecidas en la memoria (8 de FM1, 8 de FM 2 y 8 de AM)
durante el tiempo que la unidad est? enchufada, y hasta dos semanas despu?s de que se haya desconectado la alimentaci?n de CA.
1. Elija la estaci?n de radio y la banda que desea almacenar.
2. Presione el bot?n MEMORY para activar el modo Preset.
3. Seleccione un n?mero de presinton?a usando los botones PRESET UP () o DOWN () para seleccionar el canal de preset que desea escuchar.
4. Presione MEMORY nuevamente para bloquear su elecci?n.
Una vez que haya terminado de programar sus selecciones en la memoria del sistema, solo necesita usar PRESET UP o
Los botones ABAJO en la unidad para buscar la frecuencia deseada. En el control remoto, use el teclado num?rico para seleccionar el
N?mero del canal preajustado que desea escuchar.
Espero te haya servido mi comentario
Saludos Franco Dosil

Tuning to radio stations

1. 1 Select TUNER source. ? TUNER is displayed briefly.
2. 2 Press BAND once or more to select your
   waveband.

1. 3 Press down on TUNING a? or a? and release button.
   ? The radio automatically tunes to a station with sufficient reception. Display indication during automatic tuning: SEARCH.? If a FM station is received in stereo, STEREO is shown.
2. 4 Repeat step 3 if necessary until you find the desired station.

To tune to a weak station, press TUNING briefly and repeatedly until you have found optimal reception.


Programming radio stations
You can store up to a total of 40 radio stations in the memory.
Automatic programming
Automatic programming will start with a chosen preset number. From this preset number upwards, former programmed radio stations will be overridden.The system will only programme stations which are not in the memory already.
Press PRESET 3 or 4 (on the remote control ¡ or TM ) to select the preset number where programming should start.
Note:
- If no preset number is selected, default is preset (1) and all your presets will be overridden.
Press PROGRAM for more than 2 seconds to activate programming.? AUTO is displayed and available stations are programmed in order of waveband reception strength: FM followed by MW and LW.The last preset automatically stored will then be played.
Manual programming
Tune to your desired station (see "Tuning to radio stations").
Press PROGRAM to activate programming. ? PROGRAM flashes in the display.
Press PRESET 3 or 4 (on the remote control ¡ or TM ) to allocate a number from 1 to 40 to this station.
Press PROGRAM again to confirm the setting. ? PROGRAM disappears, the preset number and the frequency of the preset station are shown.
Repeat the above four steps to store other stations.

The only thing that can be is that you have set a timer "sleep" function for that station. I have looked at the manual and it states you can programme a sleep setting for a radio station.
The instructions are on page 12. But I have extracted them below:

1 Press the ON/STAND-BY button to turn the power on.

2 Press and hold the CLOCK/TIMER button.

3 Within 10 seconds, press the or button

to select "ONCE" or "DAILY", and press the MEMORY

button. Set the clock to the correct time if "ONCE" or

"DAILY" does not appear.

4 Within 10 seconds, press the or button to select

"ONCE SET" or "DAILY SET", and press the MEMORY

button.

5 To adjust the hour, press the or button and then

press the MEMORY button.

6 To adjust the minutes, press the or button and

then press the MEMORY button.

7 Set the time to fi nish as in steps 5 and 6 above.

8 To select the timer playback source (CD, TUNER, USB,

iPhone/iPod, TAPE or AUDIO IN), press the or

button. Press the MEMORY button.

When you select the tuner, select a station by pressing

the or button, and then press the MEMORY

button. If a station has not been programmed, "NO

PRESET" will be displayed and timer setting will be

canceled.

9 Adjust the volume using the VOLUME control, and then

press the MEMORY button. Do not turn the volume up

too high.

10 Press the ON/STAND-BY button to enter the power

stand-by mode. The "TIMER" indicator lights up and

the unit is ready for timer playback.

11 When the preset time is reached, playback will start.

The volume will increase gradually until it reaches the

preset volume. The "?" or "DAILY" indicator will blink

during timer playback.

12 When the timer end time is reached, the system will

enter the power stand-by mode automatically.

Once timer:

The timer will be canceled.

Daily timer:

The timer operates at the same time every day. It

will continue until the daily timer setting is canceled.
Cancel the daily timer when it is not in use.

1. Connect the FM antenna and the AM loopantenna at the back of the unit. Rotate the AM loop for better reception.
2. Press AM/FM.
3. Tune a station by pressing TUNER+/-repeatedly until the desired station is found.Alternatively, you can press and hold thesame buttons down for about one second toactivate the automatic search function. Inthis mode the unit will automatically tunefrequencies until it finds a station.
4. Repeat step 3 to tune to another radio station.
5. Press AM/FMto select between FM and AM.Storing Radio Stations

The unit can store up to 40 radio stations (30 preset stations for FM and 10 preset stations for AM) in its memory. You can enter every single radio station yourself or the unit can store all available radio stations automatically in ascending order

Automatic Preset Programming
1. Press AM/FM to enter the AM/FM mode.
2. Press and hold AM/FM for two seconds to start automatic preset programming.
3. Radio frequencies will be browsed and radiostations stored automatically. When all the available radio stations are stored or all 40(30 preset stations for FM and 10 preset stations for AM) memory locations are full,the auto preset programming function will stop.

Manual Preset
1. Tune to a radio station (see "Manual tuning"for details).
2. Press MEMORY. While the Program Preset number is still flashing, input your desired preset number using the numeric buttons or press CH+/-, then press MEMORY to store it.

Retrieving Preset Stations
1. Press AM/FM to enter the Tuner mode.
2. Press CH +/- to search up or down for thepreset stations or directly press the numeric buttons.

The system does have a remote (at least it should come with one if purchased new), and you need it to control pretty much everything. Here's what the manual says about the radio tuner (you can find the whole manual here) :

Manual Tuning
1. Connect the FM aerial and the AM loop antenna at the back of the unit. Rotate the AM loop for
better reception.
2. Press TUNER to enter TUNER mode and toggle between FM and AM.
3. When the FM station broadcasts Stereo sound, ST is displayed.
4. Tune a station by pressing repeatedly the TUNER+/- buttons until the desired station is found.
Alternatively, you can press and hold the same buttons down for about one second to activate
the automatic search function. In this mode the player will automatically tune frequencies until
it finds a station.
5. Repeat step 4 to tune to another radio station.

Storing radio stations
The player can store up to 30 radio stations in its memory. You can enter every single radio station
yourself or the player can store all available radio stations automatically in ascending order.
Automatic preset programming
1. Press TUNER to enter the Tuner mode.
2. Press and hold TUNER down for 3 seconds to start automatic preset programming.
Note: A weak signal can affect the "Automatic preset programming" function's efficiency. Adjust the aerial for better
reception and a more efficient search.
3. Radio frequencies will be browsed and radio stations stored automaitcally. When all the available
radio stations are stored or all 30 memory locations are full, the auto preset programming
function will stop.

Manual preset
1. Tune to a radio station (see "Manual tuning" for details).
2. Press MEMORY once to enter flashing Preset Loaction number.
3. While the Preset Location number is still flashing, input your desired preset number (1-30) using
the numeric buttons or press the CH+/- buttons, then press MEMORY to store it.

Retrieving preset stations
1. Press TUNER to enter the Tuner mode.
2. Press CH+/- to search up or down for the preset stations or directly press the numeric buttons.

As you see, you really need that remote. The same is true for disc play. While there are front panel buttons for play/stop, disc skip, and drawer open/close, you don't have any other control without the remote. Without the remote control you'll find this system won't do too much, unfortunately. If you bought this new, check the packing material before you throw it away to make sure the remote's not still somewhere in the box. They often come tucked into slots on the foam inserts.

Also, when you hook the unit to a TV, it's just using the TV as a video display device. The TV has nothing to do with any of the system's other functions.

I hope you have luck locating the remote! Thanks for using Fixya.

hi,
there is no auto presetting available. u have to set all channels in preset manually. if u power off the subwoofer all setting will be erased.for manual preset do the following.


1. Press the FUNCTION button to select "TUNER".
2. Press the FM/AM button to select a band.
3. Select the station you want to listen to (Hold down the TUNING Up or Down button until the
frequency display begins to change. When a station is tuned in, the tuning process will stop automatically.)

when it tune the first station available do the following to preset it,
4 .Press the MEMORY button.( on remote)
5. Within 5 seconds, select a preset channel to store the
station using the PRESET buttons of the remote control
unit.
6. Within 5 seconds, press the MEMORY button.(The station is stored and the MEMORY indicator goes off. To store more stations, repeat steps 3 to 6) .

for listening preset ed station ,Press the PRESET button repeatedly until the desired
preset station is found.
ok

Car stereos typically have an "ignition" and a "battery" wire. The ignition wire is connected to your ignition switch, and only supplies power to the stereo when the car is turned on. The battery wire is connected directly to the battery, and always supplies electricity to the stereo -- even when the car is off. This maintains presets, clock, and other settings in your stereo.

It sounds like your battery wire was either not hooked up, or has come loose. On your stereo, a Pioneer, this wire is yellow. Locate the yellow wire on the wiring harness on the back of your stereo. This wire should be connected directly to your battery (or another source that gets constant +12VDC).

hi girlygirl 1

the problem is your ignition and your permanant battery live wires are the wrong way round all you have to do is remove the stereo and you will usually see a red wire plug into another red wire and a yellow wire into another yellow wire all you have to do is change the red to the yellow and the yellow to the red and it will hold the memories fine hope that helps !

This is a USA model and by default in the USA all FM stations end in an Odd number. This is completely normal. you can try holding preset 1 and 5 down while pressing the reset button on the unit and it may allow you to switch to a Europe style of tuning.