MERCEDES-BENZ SLK-Class 2007 R171 Comand Manual

60 Audio
MP3 operation
Press'.
COMAND changes the folder and loads
the data from the new folder.
It may take a while to load the data, de-
pending on the number of folders and
tracks.
The following options are available:
Selecting via track skip (page 60)
Selecting via track list (page 60)
Selecting via direct entry of the track
number (
page 61)
Selecting via scan search (page 61)Selecting via track skip
On the COMAND control unitOpen the MP3 main menu (page 58).
For forward skipping press+;
or
For backward skipping press,.
The tracks skip immediately after
pressing one of the buttons.
On the multifunction steering wheel
Switch the multifunction display in the
instrument cluster to the MP3 display
(
page 27).
For forward skipping pressj;
or
For backward skipping pressk.
The tracks skip immediately after
pressing one of the buttons.
Selecting via track list
The track list contains all tracks in the cur-
rent folder. Only one track can be viewed
at a time.
Selecting a track
i
Forward skipping:
The next track is played.
Backward skipping:
If the track has been playing longer
than approx. 10 seconds, the system
skips back to the beginning of the
track.
If less than 10 seconds have played,
the system skips back to the beginning
of the previous track.

61 Audio
MP3 operation
1Current track
Open the MP3 main menu (page 58);
Press% or & to select a different
track.
Th e c u r r e n t t r a c k r e m a i n s p l a y i n g w h i l e
selecting.
Press', or wait approx. 3 seconds
without changing the selection.
The selected track is played.Selecting via direct entry of the track
number
Open the MP3 main menu (page 58).
Press..
The Manual track input display ap-
pears.
1Number of tracks in the current folder
(10 tracks)
Example entry: Track 1
Press!.Example entry: Track 10
Press! and " in quick succession.
Wait approx. 3 seconds after entering
the number.
The selected track is played.
Selecting via scan search
Scan search is characterized as follows:
Scan search plays each track in the
current folder for approx. 8 seconds.
Scan search can be ended manually.
Scan search automatically stops at the
track listened to before the scan
search was started.
i
It is not possible to enter a number
greater than the number of tracks in
the current folder.

62 Audio
MP3 operation
Starting scan search
In the MP3 main menu (page 58)
press the
Scan soft key.
The scan search starts.
Ending scan search manually
Press the Scan soft key.
The track playing when scan search is
ended remains selected.
Open the MP3 main menu (page 58).
Press and hold+ or,.
To stop release+ or,.
The following options are available:
Normal sequence
The COMAND plays tracks in a folder in
succession.
Once all the tracks in a folder have
been played, COMAND begins playing
the track(s) in the next folder on the
CD.
Repeat track
The COMAND will repeat the current
track until this function is canceled.
Repeat folder
The COMAND will repeat the tracks in
the current folder until this function is
canceled.
The track sequence is the same as the
Normal sequence option.
Track Random
This option is restricted to the tracks in
the current folder. The tracks are
played in random order.
Folder Random
All tracks on the CD are played in ran-
dom order.
Changing the playback option
In the MP3 main menu (page 58),
press the
Setting soft key.
The Settings menu is displayed.
The solid circle indicates which op-
tion is currently selected.
i
The scan search will not function if the
current folder only contains one track.
When you start scan search, playback
option
Normal sequence (page 62) is
activated automatically.
Therein scan search is restricted to the
current folder.
Fast forward/reverse
Playback options

63 Audio
MP3 operation
Press% or & to select a different
option.
Press'.
The option is activated. A correspond-
ing display will appear in the status bar
for all options except
Normal sequence.
An option will remain activated even if
C O M A N D i s s w i t c h e d O F F a n d t h e n O N
again.

64 Audio
CD changer* operation
Only touch the CD on the edges.
Clean the CD with a dry, lint-free cloth.
Wipe the CD a straight line from the
center. Never wipe the CD in a circular
motion.
Do not use rubbing alcohol or solvents
to clean CDs.
Do not expose the CDs to heat or direct
sunlight.
Do not write or put labels on CDs.
Open the CD changer main menu
(
page 69);
or
Load an audio CD into the CD changer
(
page 65).The CD changer is located in the glove box
and can play audio and MP3 CDs.
Permissible MP3 CDs
The CD changer can read CD-R and CD-RW
CDs.
Permissible file system
The permitted file system is Joliet for CD-R
and CD-RW.
Permissible MP3 formats
The CD changer supports the following file
formats:
MPEG1 Audio Layer 3
MPEG2 Audio Layer 3
MPEG 2.5 Audio Layer 3
Safety instructions
WarningG
In order to avoid distraction which could
lead to an accident, the driver should insert
CDs with the vehicle at a standstill and
operate the audio system only when road,
weather and traffic conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
The CD changer is a Class 1 laser product.
There is a danger of invisible laser radiation
when you open or damage the cover.
Do not remove the cover. The CD changer
does not contain any parts serviceable by
the user. For safety reasons, have any nec-
essary service work performed by qualified
personnel.
Tips on caring for your CDs
Switching to CD changer mode
CD changer
MP3 CDs

65 Audio
CD changer* operation
Permissible bit and scan rates
Fixed and variable bit rates up to 320 kbps
are permissible.
The permissible scan rates can be found in
the table below.
.
Tips on copyright
Please also refer to the tips on copyright
(
page 57).
Playing MP3 CDs
The CD changer can play MP3 CDs as well
a s a u d i o C D s . A l l t h e C D c h a n g e r f u n c t i o n s
listed below also apply to the playing of
MP3 CDs.
When playing MP3 CDs, only the first 99
tracks will be played back in successive or-
der. After that, playback will begin with
track 1of the MP3 CD if
Repeat CD is select-
ed (
page 74). Folder selection is not pos-
sible.
i
In everyday speech, the MPEG1 Audio
Layer 3 format has been replaced by
the designation “MP3”.
File formatScan rate
MPEG1
Audio Layer 332 kHz, 44.1 kHz,
48 kHz
MPEG2
Audio Layer 316 kHz, 22.5 kHz,
24 kHz
MPEG2.5
Audio Layer 38 kHz, 11.025 kHz,
12 kHz
i
It is recommended to use MP3 tracks
with a bit rate of128 kbps or higher and
with a scan rate of 44.1 kHz or higher.
Lower rates may impair quality. This is
particularly true if the sound function
LOGIC7 Surround has been activated.
i
Depending on the complexity of the di-
rectory structure, playback of the first
track may in some cases be delayed.
Loading CDs
WarningG
In order to avoid distraction which could
lead to an accident, the driver should insert
CDs with the vehicle at a standstill and oper-
ate the audio system only when road, weath-
er and traffic conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.

66 Audio
CD changer* operation
In order to load CDs, you will need to open
the glove box.
1CD slot
2Magazine compartment buttonsThe CD changer has a built-in magazine
which can hold up to six CDs.
The CD changer has six magazine compart-
ment buttons 2 for controlling the loading
procedure.
LEDs in the buttons indicate the status of
the corresponding magazine compart-
ment.
Button LED OFF:
Magazine compartment empty
Button LED flashes green:
CD changer requesting CD to be load-
ed
Button LED continuously red:
Magazine compartment loaded with a
CD
The status of a magazine compartment can
also be seen when selecting a CD in the CD
Selection menu (
page 71).
The CD slot 1 for loading CDs into the CD
changer is located above the buttons 2.
!
Do not attach labels of any type to the
CD. They may become detached and
damage the drive.
Your CD drive has been designed to
play CDs which correspond to the IEC
60908 standard. Therefore only CDs
not exceeding a thickness of 1.3 mm
can be used.
If you insert thicker data carriers, e.g.
ones that have data on both sides (one
side with DVD data, the other side with
audio data), they will become stuck and
damage the drive.
Data carriers which contain data on
both sides can cause play-back prob-
lems because the storage layers are
thinner than one-sided data carriers.
!
Do not play single CDs (80mm) with an
adapter. An adapter could become
stuck and damage the drive. Only use
12 cm diameter CDs.
i
The CD changer may not be able to play
audio CDs with copy protection.

67 Audio
CD changer* operation
Loading options:
Loading a single magazine compart-
ment
Loading all six magazine compart-
ments
Loading a single magazine compart-
ment
Open the glove box
(
Vehicle owner's manual).
Briefly press the button 2 of the emp-
ty magazine compartment to be load-
ed.
Wait until the LED in the button 2
flashes green.
This indicates that the CD changer re-
quests a CD.
Insert an audio CD into the CD slot 1
within approx. 15 seconds. Insert the
CD face up.
The CD is pulled in. The red LED in the
corresponding magazine compartment
button 2 lights up continuously. The
system starts playing the CD.
The loading procedure is completed.
Loading all six magazine compart-
ments
Initial situation: all magazine compart-
ments are empty.
The CD changer loads all magazine com-
partments beginning with compartment 1.
Open the glove box
(
Vehicle owner's manual).1CD slot
2Magazine compartment buttons
Press and hold the button of an empty
magazine compartment 2 for more
than 2 seconds.
The LEDs of all magazine compartment
buttons 2 briefly light up green sever-
al times.
Wait until the LED in the first magazine
compartment button 2 flashes green.
This indicates that the CD changer re-
quests a CD.
i
Loading a magazine slot will stop the
playback of a CD in the changer.


68 Audio
CD changer* operation
Insert an audio CD into the CD slot 1
within approx. 15 seconds. Insert the
CD face up.
The CD is pulled in; the magazine com-
partment is loaded.
The red LED in the corresponding mag-
azine compartment button 2 lights up
continuously.
The CD changer then requests inser-
tion of the next CD. The LED in the cor-
responding magazine compartment
button 2 flashes green.
Repeat the last step until all six maga-
zine compartments are loaded.
The system plays the sixth CD. The
LEDs in all magazine compartment but-
tons 2 light up red continuously.
The loading procedure is completed.The following options are available:Ejecting one CD
Ejecting all CDs (page 69)Ejecting one CD
1CD slot
2Magazine compartment buttons
Open the glove box
(
Vehicle owner's manual).
Briefly press the appropriate magazine
compartment button 2.
The button LED 2 flashes red. The CD
changer ejects the CD.
Within 15 seconds, remove the CD
from the slot 1.
i
If, for example, only compartments 1
through 4 are to be loaded instead of
all six compartments, simply do not in-
sert the a fifth CD into the slot 1. The
CD changer attempts to load the fifth
CD, yet aborts the loading procedure.
The system automatically plays the last
(fourth) CD.
Ejecting CDs

69 Audio
CD changer* operation
The CD will be pulled in again if it is not
removed from the slot within 15 sec-
onds. The system starts playing the CD
again.
The ejection procedure is completed.
Ejecting all CDs
Open the glove box
(
Vehicle owner's manual).
Press and hold the button of a loaded
magazine compartment 2 for more
than 2 seconds.
Th e b u t t o n L E D s o f a l l l o a d e d m a g a z i n e
compartments will briefly flash red,
several times.The CD changer ejects the CDs one af-
ter another.
Within 15 seconds, remove each CD
from the slot 1.
The CD will be pulled in again if it is not
removed from the slot within 15 sec-
onds. The system starts playing the CD
again.
The ejection procedure is completed
when all CDs are removed, or when the
procedure is aborted by the CD chang-
er.
Open the Audio main menu
(
page 38).
Press the CDC soft key.
i
If you are listening to a CD in the CD
changer and you eject another CD from
the changer:
While ejecting the CD, the system
interrupts CD playback.
The CD you were last listening to
starts from the beginning once the
ejection procedure is completed.
i
If you eject the CD you are currently lis-
tening to:
The next available audio CD is
played.
If there are no other CDs available,
the system switches to the audio
source listened to before CD chang-
er mode.
CD changer main menu