BECKER BE3201 Service Manual
Circuit diagram - Mercedes Benz MY98
Block diagram
Main Board 4010 .................................................... 2
Connector
Connector block (Board 4040) .............................. 3
Connector interface (Board 4010) ......................... 4
Power supply
UG9V; UD5V; UG5V (Board 4010) ........................ 5
Tuner
FM-Tuner (Board 4010) ......................................... 6
FM-Peripherie (Board 4010) ................................. 7
AM-Tuner (Board 4010) ........................................ 8
AF-section
Audio controller and FM-Stereo decoder ............... 9
AF-amplifier (Board 4010) ...................................... 10
CSD - Version: 38/99
Interface
d2b-optical (Board 4010) ...................................... 11
Wake up-Line, K-Line(Board 4010)........................ 12
Control
Processor (Board 4010) ........................................ 13
Shiftregister, EEPROM (Board 4010) ................... 14
CC-control, Dolby B (Board 4010) ........................ 15
Front
Front-Interface (Board 4010).................................. 16
Front-Processor, Keyboard right (Board 9090) ...... 17
Keyboard left (Board 9060) .................................... 18
Display (Board 9090) ............................................. 19
Table of contents Circuit diagram 3201Audio 10 Export DIN
BE
1
Circuit diagram - Mercedes Benz MY98
CSD - Version: 38/99
AF-section
AF-amplifier
and
Connector-
interface
Interface
„d2b“
AF-section
Audio-
controller
Power
supply
Control
CC-Control,
Dolby B
Tuner
Peripherie
Tuner
FM
Tuner
AM
Front
„Interface“
Block diagram Main Board 4010
Interface
Shiftregister,
EEPROM,
Wake upline,
K-line
Control
P
BE
3201Audio 10 Export DIN
2
2
Circuit diagram - Mercedes Benz MY98
CSD - Version: 38/99
B1 B3 B5
B2 B4 B6B7B8
A1 A3 A5
A4
A6A2
A7
A8
Chamber CChamber B Chamber A
C1 C3 C5 C7
C2 C4 C6 C8C9C10
Connector block
Chamber C
Chamber B
Chamber A
PIN
Chamber A Chamber B Chamber C
Speed
1
dependent Vol.
control
K-line
2
3
mute
Terminal 30,
4
Battery
C1 C3 C5 C7
C2 C4 C6 C8C9C10
B1 B3 B5
B2 B4 B6B7B8
A1 A3 A5
A4
A6A2
Loudspeaker
rear right +
Loudspeaker
rear right -
Loudspeaker
front right +
Loudspeaker
front right -
Fuse 10A
A7
A8
not assigned
not assigned
not assignedTelephone
Wake up line
Control
5
output 12V
Battery 12V
6
Fuse
7
Ignition
Terminal 31,
8
Ground
9
Connector Connector block (Board 4040) 3201Audio 10 Export DIN
Loudspeaker
front left +
Loudspeaker
front left -
Loudspeaker
rear left +
Loudspeaker
rear left -
Battery 12V
Fuse
Terminal 31,
Ground
not assignedTerminal 15,
not assigned
not assigned
not assigned10
BE
3
Circuit diagram - Mercedes Benz MY98
CSD - Version: 38/99
AF-section
Page 10
Connector Connector interface (Board 4010) 3201Audio 10 Export DIN
BE
4
Circuit diagram - Mercedes Benz MY98
12V out
Voltage
control
CSD - Version: 38/99
UG9V
UG5V
UD5V
Tel.- Mute- input
GAL-input
Inverter -IgnationKL75-
Power supply UG9V; UD5V; UG5V (Board 4010) 3201Audio 10 Export DIN
BE
5
Curcuit diagram - Mercedes Benz MY98
CSD - Version: 38/99
FM-Demodulator
Oszil.
FM-
Frontend
Tuner FM-Tuner (Board 4010)
Synthesizer
BE
3201Audio 10 Export DIN
6
6
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