Operating instructions
ACR 3251
Table of contents
Radio operation with RDS ........... 18 Appendix ....................................... 21
Short instructions ........................ 14
AF - Alternative frequency .................... 18 Mechanism/cassette tapes ................... 21
REG - regional programme ................... 18 Specifications ........................................ 22
Selecting a waveband ........................... 18
Selecting a station................................. 18
Automatic tuning ................................ 18
Important notes ............................ 16
Precautions ........................................... 16
Traffic safety ......................................... 16
QuickOut ............................................... 16
Installation/Connection.......................... 16
Manual tuning .................................... 19
Selecting the seek tuning sensitivity ..... 19
Switching from stereo to mono (FM) ..... 19
Anti-theft protection ..................... 16
Entry of a wrong code number .............. 16 Changing the memory bank .................. 19
Switching on security coding................. 17 Storing stations ..................................... 19
Re-start following an interruption of the
Automatically storing the strongest
power supply ......................................... 17 stations with Travelstore ....................... 19
Switching off security coding................. 17 Recalling stored stations ....................... 20
CODE LED............................................ 17
Receiving traffic programme
stations with RDS-EON ................ 20
Traffic announcement priority on/off ..... 20
Warning beep........................................ 20
Switching the warning beep off.......... 20
Automatic seek tuning start................... 21
Adjusting the volume for traffic
announcements and the warning
beep ...................................................... 21
Tape operation.............................. 21
Inserting a tape ..................................... 21
Removing a tape ................................... 21
Fast Forward ......................................... 21
13
Short instructions
1 On / Off:
Turn the knob.
On
3 Fast winding/Cassette removal
6 AF
(Alternative Frequency during RDS
operation)
Off
When “AF” lights up in the display, the
radio will automatically search for a
frequency offering better reception of
the same RDS programme.
To adjust the volume:
Turn the knob.
FF : Fast forward; stop by pressing FF.
To switch AF on/off: Press AF briefly.
2 TONE – audio
To adjust the
Cassette removal
Push the
button fully.
Extra functions:
BASS
Hold down the button for approximately
2 seconds. REG ON/REG OFF is dis-
played for approximately 2 seconds.
REG ON / REG OFF - With REG ON
the system will only switch to a better
alternative frequency if it offers the
same regional programme (see “REG -
regional programme”).
TREBLE (Treble control)
4 Cassette loading slot
Insert tape (side A or 1 up; the open
side facing to the right).
To alter a setting:
Toggle the TONE button until the corre-
sponding abbreviation and the adjusted
value appear in the display.
5 FM·T - FM, Travelstore
Changeover button for switching be-
tween the FM memory banks I, II or “T”
(Travelstore).
To switch between the FM memory
banks:
Toggle button until the desired bank is
indicated in the display.
To automatically store the six most
powerful stations with Travelstore:
To store: Press the FM·T button until
the seek tuning process begins and is
indicated in the display.
Use the
buttons to alter the selec-
7 TA (Traffic Announcement = priority for
traffic anouncements)
ted setting. The adjusted value is indi-
cated in the display.
The last setting will be stored automati-
cally.
If the setting remains unchanged within
8 seconds, the display will switch back
to the previous condition.
If “TA” is displayed, the system will play
traffic programme stations only.
TA on/off: Press the TA button.
Extra function:
Coding: Read chapter “Anti-theft pro-
tection” first.
To recall: Toggle the FM·T button until
the display shows “T”. Then briefly
press one of the preset buttons 1-6.
8 1-6
To store and recall stations.
14
9 lo·m
lo (local) - To alter the seek tuning sen-
; Display
Radio operation:
<
Station tuning – automatically, if “m”
has disappeared from
sitivity during radio operation.
If “lo” is displayed, the radio will only
pick up strong, local stations (normal
sensitivity).
the display.
– manual, if “m” lights
up in the display.
NDR1 - Station abbreviation or frequency
FM - Waveband
I, II, T - Memory bank (I, II, or Travelstore)
If “lo” does not light up, the radio will
also pick up weaker, distant stations
(high sensitivity).
If the display shows “m”, manual tuning
is adjusted.
Toggle by pressing the lo·m button.
= Code LED
4
- Preset buttons (1 - 6)
- Stereo
Flashes for additional theft protection
when the ignition has been switched
off.
lo
AF
TP
- Seek tuning sensitivity
- Alternative RDS frequency
- You are listening to a traffic
programme station.
To toggle the function: Press lo·m
briefly during radio operation.
Extra function:
To switch between stereo and
mono:
TA
- Priority for traffic programme
stations
Hold down the button for approximately
2 seconds. With stereo playback, the
stereo sign “ ” will appear in the dis-
play.
Tape operation:
TAPE - tape operation
: M·L
Changeover button for switching to
medium or long wave.
15
Important notes
Anti-theft protection
the car radio from its bracket which enables This car radio is supplied with inactive code
you to carry it out anywhere. The memory of protection. In order to switch the security
the preset buttons is maintained also for long coding system on, proceed as described in
Precautions
Before starting to use your new car radio,
please read the information on “Traffic safe-
ty” and “Anti-theft protection” carefully.
periods of time.
the following.
If you wish to remove the unit:
If the coding system is active while the power
supply to the system is interrupted (e.g. theft,
disconnection of the car battery), the set will
be electronically blocked. In such a case it
canonlybemadeoperableagainbyentering
the correct code number given in the car
radio passport.
•
Press button “a” and pull handle “b”
Traffic safety
firmly.
If you wish to resume radio or cassette op-
eration:
As the driver of a motor vehicle, it is your
responsibility to pay attention to the traffic
situationatalltimes.Neveruseyourcarradio
in a way that could distract you.
Please keep in mind that you travel a di-
stance of 14 m per second at a speed of only
50 km/h.
Should the traffic situation become particu-
larlydemanding,weadviseyounottousethe
radio.
Always make sure that you are still able to
hear any warning signals coming from out-
side of the vehicle, such as police or fire
engine sirens, so that you can react accord-
ingly.
•
Push the unit into the bracket as far as
it will go and lock the handle into place
on the front plate.
Entry of a wrong code number
Operation of the car radio can begin as long
as the security coding system is switched off.
If the coding system is active, proceed as
described in the chapter “Re-start following
an interruption of the power supply” each
time the unit is reinserted.
It should not be possible for a thief to find out
the correct code number by trial and error.
Thisiswhythesetwillbeblockedforacertain
periodoftimeafterawrongcodenumberhas
been entered. The display will then show
“CODE ERR”.
Installation/Connection
After the first three unsuccessful attempts
the system will lock for 10 seconds; after
further attempts, the waiting time extends to
one hour.
After 19 unsuccessful attempts the display
will show “OFF”. In this case you can no
longer re-start the unit.
If you would like to install this equipment
yourself or add any new components, please
carefully read the installation and connection
instructions following the appendix.
Do not ground the loudspeaker outputs!
Use only the accessory and replacement
parts approved by Blaupunkt.
Therefore, you should always select a
moderate volume for playing your car radio
while you are driving.
QuickOut
Note:
This unit is available with or without the
“QuickOut” (quick release) option.
The QuickOut handle facilitates removal of
Keep your car radio passport with the code
number in a safe place in order to avoid
16
“unauthorised access” to your car radio.
When the security code system is activated,
the unique code must be entered each time
the power to the unit was interrupted.
The radio will function again as soon as you
have entered the correct code.
If you have lost your radio passport and
forgotten the code number, your radio can
only be made operable again by one of our
authorised service workshops, which is sub-
ject to payment.
-
-
Press the TA button twice; the dis-
play shows “2520”.
Switching off security coding
•
•
Turn off the radio.
Press the M·L button once; the dis-
play shows “2521”.
Press AF and > buttons simultaneously
and hold down while
•
To confirm the code number:
Press the > button.
•
•
switching the set on again.
The display shows “CODE”.
Now the security coding system is active.
Thedisplaywillbrieflyshow“C”eachtimethe
set is turned on.
If the display shows “CODE ERR”, you have
entered a wrong code. Re-enter the correct
code after the waiting time (“CODE” will ap-
pear in the display).
Now enter the code number to be found
in the car radio passport and confirm
(see example under “Switching on se-
curity coding”).
Security coding is now switched off.
Switching on security coding
If you switch off the set while it is blocked, the
waiting time will start anew as soon as the
radio is turned on again.
To activate the coding system:
CODE LED
•
•
Turn off the radio.
To indicate that your unit is equipped with
security coding, the LED flashes for extra
security when the car is stationary.
Press buttons AF and > simultaneously
and hold down.
Re-start following an interrup-
tion of the power supply
(coding system is activated)
•
•
•
Turn on the radio.
The display shows “CODE”.
Briefly press the FM·T button; the dis-
play shows “0000”.
•
Turn on the radio.
The display shows “CODE”.
Enter the code number given in the
Blaupunkt car radio passport.
•
Enter the code number given in the
Blaupunkt car radio passport and con-
firm (see example under “Switching on
security coding”).
Example: The code number is 2521.
-
Press the FM·T button twice; the
display shows “2000”.
-
Press the AF button five times; the
display shows “2500”.
The unit is now ready for use.
17
Radio operation with RDS (Radio Data System)
The Radio Data System offers you more switching on the radio or recalling one of the
convenience when listening to FM radio sta- stored frequencies, the unit is automatically
•
Press the AF button for approximately
2 seconds until “REG OFF” appears.
tions.
searching for an alternative frequency.
When active, “REG ON” will be briefly dis-
played each time the radio is switched on.
More and more radio stations have begun to “SEARCH” will disappear from the display
broadcast RDS information alongside their when the alternative frequency has been
programmes.
found or after the frequency band has been
Selecting a waveband
Assoonasaprogrammehasbeenidentified, run through completely.
the station name including a regional identi- If the reception quality of the selected pro-
fier, if applicable, will appear in the display, gramme becomes too poor:
for example, NDR1 NDS (regional program-
Youcanchoosebetweenthefollowingwave-
bands:
FM 87.5 - 108 MHz
•
Tune into another station.
me in Lower Saxony, Germany).
MW 531 - 1602 kHz
LW 153 - 279 kHz
When RDS is activated, the station buttons
become programme buttons. You now know
exactly which programme you have tuned
into, making it easy to find the desired station
quickly.
REG - regional programme
•
Set the desired waveband by pressing
Certain radio programmes are split up at
times into regional programmes offering lo-
cal information. The 1st programme broad-
cast by NDR, for example, offers program-
mes with different contents in the northern
states of Germany Schleswig-Holstein,
Hamburg and Lower Saxony at certain times
of the day.
FM·T or M·L.
To switch from MW to LW or vice versa
• press the M·L button.
But RDS offers you further advantages:
AF - Alternative frequency
Selecting a station
The AF (Alternative Frequency) function
makes sure that the strongest frequency of
the currently selected programme is always
tuned in automatically.
This function is activated when “AF” appears
in the display.
Using the
buttons there are several
different ways of tuning into a station:
If you are tuned into a regional programme
and wish to continue listening to this pro-
gramme,
Automatic tuning
•
press the AF button for approximately
2 seconds.
Prerequisite: “AF” and “m” do not light up in
the display, i.e. the Alternative Frequency
function and manual tuning are switched off.
Use the AF and lo·m buttons (lo, m, -, lo) to
adjust the respective modes.
In order to switch this function on or off,
“REG ON” appears in the display.
•
press the AF button briefly.
If you leave the service area of the regional
programme tuned into, or if you would like to
take advantage of the full RDS service,
switch to “REG OFF”.
The radio will switch to mute briefly while
searching for the strongest reception signal.
If “SEARCH” appears in the display when
•
Press
; the car radio will automati-
cally search for the next station.
18
When keeping the
pressed, seek tuning will speed up in up-
wards or downwards direction.
or the
button de-
•
•
Select the waveband with the FM·T or
M·L button and for FM select the mem-
ory bank with FM·T.
Switching from stereo to mono
(FM)
If reception is poor, you may get better sound
quality by switching to mono:
Toggle FM·T until the desired memory
bank is indicated in the display.
Manual tuning
•
Press the lo·m button until a beep
sound is released and the stereo sign
disappears from the display.
Prerequisite: “m” lights up in the display.
Toggle the lo·m button until “m” is displayed.
Select the desired preset button (1 to 6)
for the new station to be stored using
preset buttons 1-6.
•
Press
; the frequency will change in
Each time the radio is switched on, stereo
playback is activated ( is displayed).
The unit will automatically switch to mono if
the received signal is not strong enough for
stereo playback.
short intervals in upwards or down-
wards direction.
•
•
Tune in a station either automatically or
manually by pressing < or >.
When holding the
frequency scan is speeded up.
or
button down, the
Press the desired preset button (1-6)
until the radio resumes play after the
muting and you hear the beep.
Selecting the seek tuning sensi-
tivity
Now the station has been stored.
The activated preset button (1-6) is indicated
in the display.
Changing the memory bank
You can shift between the memory banks I, II
and T in order to store stations and recall
them later.
The currently selected memory bank is indi-
cated in the display.
You can alter the automatic seek tuning
sensitivity.
For this,
Note:
If you select an already stored station, the
corresponding memory bank and preset but-
ton will flash in the display for about 6
seconds.
•
press the lo·m button briefly.
If “lo” is displayed, the radio will only pick up
strong, local stations (low sensitivity).
If “lo” does not light up, the radio will also pick
up weaker, distant stations (high sensitivity).
Make sure that “m” is not indicated in the
display.
•
Toggle the FM·T button until the desi-
red memory bank lights up in the dis-
play.
Automatically storing the
strongest stations with Travel-
store
Storing stations
On FM, you can store six stations on the
preset buttons 1 to 6 for each of the memory
banks I, II and T. On MW/LW it is possible to
store six stations on each waveband.
You can automatically store the six most
powerful FM stations of your current recep-
tion area sorted according to their signal
strength.
19
Receiving traffic programme stations with RDS-EON
This function is particularly convenient on Many FM broadcasters offer traffic mess- To switch the priority on or off:
longer trips.
Press the FM·T button until the search
process begins.
ages for their service area at regular inter-
vals.
•
Press the TA button.
•
When pressing TA while a message is being
broadcast, this message will be interrupted.
The unit will then switch back to the previous
condition. The priority for other traffic messa-
ges remains active.
All traffic programme stations transmit a spe-
cial carrier signal alongside their program-
mes, which is decoded by your car radio. If
this signal is identified, “TP” will appear in the
display (Traffic Programme).
In addition to these, there are also stations
which do not actually transmit traffic pro-
grammes themselves, but by using RDS-
EON they offer the possibility to receive the
traffic messages broadcast by another traffic
programme station in the same radio net-
work. If you listen to one of these stations
(e.g. NDR3), “TP” will appear in the display
as soon as the priority for traffic programme
stationshasbeenactivated, i.e. “TA”mustbe
displayed.
The radio will search for the strongest FM
stations and store them on the memory bank
“T” (Travelstore). When this process has
been completed, the radio will play the first
station.
If desired, stations can also be stored manu-
ally on the Travelstore bank (see “Storing
stations”).
Warning beep
If you leave the reception area of the traffic
programme station currently tuned into, you
will hear a warning beep after approximately
30 seconds.
This alarm tone will also be released when
recalling a preset button which has no traffic
programme allocated to it.
Recalling stored stations
You can recall any stored station at the touch
of a button.
•
Select the waveband by pressing the
FM·T or M·L button and for FM select
the memory bank with FM·T.
Switching the warning beep off
If a traffic announcement is broadcast, the
radio will automatically switch to the linked
traffic programme station (in this case,
NDR2) for the duration of the message and
return to the original programme (NDR3)
afterwards.
a) Tune into another station offering traffic
information:
Toggle FM·T until the desired memory
bank is indicated in the display
•
Press
or
•
Toggle the corresponding preset button
until the desired preset station appears
in the display.
•
press a preset button which has a
traffic programme station allocated
to it.
Alternatively:
Traffic announcement priority
on/off
b) Switch off the priority for traffic an-
nouncements:
If the priority for traffic announcement pro-
grammes is activated, “TA” will light up in the
display.
•
Press TA.
“TA” will disappear from the display.
20
Tape operation
Appendix
Automatic seek tuning start
Inserting a tape
Mechanism/cassette tapes
Prerequisite:
The priority for traffic announcements has
been activated.
When leaving the reception area of the tuned
in traffic programme station while listening to
a tape or after having turned down the vol-
ume completely, the system will automati-
cally start searching for
programme.
If no such station is found within approxi-
mately 30 seconds, tape operation will be
stopped and a warning beep will sound. To
switch the warning beep off, proceed as
described above.
To avoid possible problems, you should not
use cassette tapes longer than 60 or 90
minutes (C60/C90). Store your tapes in a
cool place away from dirt, dust and tempera-
turesexceeding50° Celsius. Allowverycold
tapes to warm up before playing them in
order to avoid uneven transport. After ap-
proximately 100 hours of use, dust particles
collected on the playback head or roller may
lead to tape run problems and sound distor-
tions.
Use a head cleaning tape to remove normal
dirt build-up. For tougher cases, use a cotton
swab (Q-Tip) soaked with alcohol. Do not
attempt to clean by inserting a hard object
into the player!
•
•
Turn on the set.
Insert a tape.
Insert the tape with side A or 1 showing up, the
open side facing to the right.
a
new TA
=Press to eject the tape.
The display shows “TAPE” while the tape is
being played.
Removing a tape
Adjusting the volume for traffic
announcements and the warning
beep
•
Press
.
The cassette will eject.
This volume was preset at the factory.
Fast forward
To begin and end fast forwarding
•
Press
gently.
21
Specifications
Amplifier
Output power:
2 x 10 W RMS power
acc. to DIN 45324/3.1
into 2 Ω
FM waveband
Sensitivity:
1.3 µV at 26 dB
signal-to-noise ratio
Frequency
response:
35 - 15 000 Hz
30 - 14 000 Hz
Tape player
Frequency
response:
Subject to modifications!
22
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