Circuit diagram
Version 1.0 - english
BECKER GMBH
Im Stöckmädle 1
76307 Karlsbad, Germany
Telefon +49(0) 7248 710
Modifications reserved
Copyright by Harman/Becker, Karlsbad
Components schematics
Test programme
Anti-theft device
Technical Data
Audio 10 Export Typ 4311
Service Manual
Spare Parts List
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BE
CSD - Version: 04/01
Mercedes Benz W203
15
4311
Additional
Test programme
Audio 10 CC EXP
1 and 2 press simultanously
3
press once
Becker-Test mode
is activated
z. B. 10 = Field strength
z. B. 89.5 = Frequency (MHz)
Test programme
3
press twice
3
press 3 times
3
press 4 times
Sahara software version
3
press 5 times
3
press 7 times
BECKER
6.4 12.9
DSP
210699 FC
3
press 6 times
1
3
2
Display:
actual software version
VLT
Display:
actual hardware version
BRA
SIG
10 89.5
TYP
4311
SER
Y1001468
HW
20/00
SW
09/00
Display:
serial number
Display:
Radio type
Display: minimum or
maximum voltage
BE
CSD - Version: 04/01
Mercedes Benz W203
16
3 press 8 times
3
press 9 times
connected amplifier
SOL = set value
V03 = Adjust volume (00-2F possible adjustments -by turning
the volume control );
B0A = Bass centre setting; T0A = Treble centre setting
4
press once
4
press twice
4
press 3 times
internal test programme
4
press 4 times
3
press 10 times
STANDARD
F0A BAL0A
GAL
G:00 V:00
4 press 5 times
LST = last volume change
V42 = last volume change
B40 = Bass average value; T40 = Treble average value
SOL
F0A = Fader centre setting; BAL0A = Balance centre setting
AMP
SOL
V03B0AT0A
IST
V03B0AT0A
IST
F0A BAL0A
LST
V42B40T40
LST
F40 BAL40
3
4
IST = actual value
V03 = Adjust volume (00-2F possible adjustments -by turning
the volume control );
B0A = Bass centre setting; T0A = Treble centre setting
F0A = Fader centre setting; BAL0A = Balance centre setting
3
press 12 times
DSR
CNT:00
3
press 11 times
PRG
P:00
display for speed dependent volume control
internal test programme
3
press 13 times
END
Test programme END
F40 = Fader average value; BAL40 = Balance average value
Test programme
Additional
Audio 10 CC EXP
4311
BE
CSD - Version: 04/01
Mercedes Benz W203
17
4311
Additional
Anti-theft device
Audio 10 CC EXP
Anti-theft protection through a vehicle specific coding
These radios are not code protected. The radio is coupled with the vehicle via CAN-Bus. The
radio receives via CAN-Bus a vehicle specific coding, which will be checked during power-on
process. If the vehicle specific coding is not valid, the radio will not work in the usual mode. After
30s the PROD-Mode will be activated, ,,PROD" will be displayed. Being in the PROD-Mode, it
is not possible to operate the radio.
The vehicle specific coding between radio and vehicle can be realised by an external ,,IS-Te-
ster". Only the manufacturer can activate the radio with special software and hardware tools.
BE
CSD - Version: 04/01
Mercedes Benz W203
18
4311
Additional
Technical Data
Audio 10 CC EXP
Technical Data
Wave bands:
FM 87,5 MHz - 108 MHz
AM 531 kHz - 1602 kHz
LW 153 kHz - 282 kHz
SW 5900 kHz - 6250 kHz
Station memory:
8 stations can be stored for the wave band FM, 4 stations can be stored for each of the wave bands AM,
LW and SW
Frequency range:
50 Hz - 16 kHz Cassette
30 Hz - 15 kHz FM
50 Hz - 2,5 kHz AM, LW, SW
Autostore:
FM, AM, LW
Output power:
4 x 15 Watt
Speaker impedance:
min. 4 Ohm
GAL:
fixed defined volume increase
Antenna:
Impedance 50 Ohm
Telephone mute:
Low activ level < 2 Volt
Supply voltage:
12 Volt
Tape deck:
Autoreverse, electronical control (Full Logic Control)
Titel search forward/rewind
Soundsystem:
Connection only via D2B optical interface
CD connection:
Only MB CD - changers with D2B optical interface can be connected.
Playable CD's:
Only CD's which conform to DIN EN 60908 may be used.
The use of 8 cm CD's with aAdapter is not recommended.