Page 1
Circuit diagram - Mercedes Benz MY98
Blockdiagram
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 (Board 4010) 9
AF-amplifier (Board 4010).....................................10
CSD - Version: 26/99
Interface
d2b-optical (Board 4010) ......................................11
Wake up-Leitung, K-Leitung (Board 4010)............12
Control
P-control (Board 4010)........................................13
Shiftregister, EEPROM (Board 4010) ...................14
CC-Steuerung, Dolby B/C (Board 4010) ...............1 5
Front
Front-Interface (Board 4010)..................................16
Front-P, Keyboard central and right (Board 9090)17
Tastatur links (Board 9060)....................................1 8
Display (Board 9080) ............................................. 19
Table of contens Circuit diagrams 3301Audio 30 DIN Export
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Page 2
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
AF-section
AF-amplifier
and
Connector-
interface
Interface
„d2b“
AF-section
Audio-
controller
Power
supply
Control
CC-Control,
Dolby B
Tuner
Periphery
Tuner
FM
Tuner
AM / WB
Front
Interface
Blockdiagram Main Board 4010
Interface
Shiftregister,
EEPROM,
Wake up-line,
K-line
Control
P
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3301Audio 30 DIN Export
2
2
Page 3
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
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
2
Telephone
3
mute
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 +
Fuse 10A
A7
A8
not assigned
not assignedK-line
not assigned
4
Battery
Control
5
output 12V
Battery 12V
6
Fuse
7
Ignition
8
Ground
9
Connector Connector block (Board 4040) 3301Audio 30 DIN Export
Loudspeaker
front right -
Loudspeaker
front left +
Loudspeaker
front left -
Loudspeaker
rear left +
Loudspeaker
rear left -
Wake up lineTerminal 30,
Battery 12V
Fuse
Terminal 31,
Ground
not assignedTerminal 15,
not assignedTerminal 31,
not assigned
not assigned10
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Page 4
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
AF-section
Page 10
Connector Connector interface (Board 4010) 3301Audio 30 DIN Export
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4
Page 5
Circuit diagram - Mercedes Benz MY98
12V out
Voltage
control
CSD - Version: 26/99
UG9V
UG5V
UG9V
Tel.- Mute- input
GAL-input
Inverter -Ignition KL75-
Power supply UG9V; UD5V; UG5V (Board 4010) 3301Audio 30 DIN Export
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5
Page 6
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Tuner FM-Tuner (Board 4010)
Synthesizer
BE
3301Audio 30 DIN Export
6
6
Page 7
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
FM-
Qualitätsbewertung
Tuner FM-Peripherie (Board 4010) 3301Audio 30 DIN Export
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7
Page 8
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Tuner AM-Tuner (Board 4010) 3301Audio 30 DIN Export
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8
Page 9
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Audio controller
and
FM-Stereo decoder
AF-section Audio controller and FM-Stereo decoder (Board 4010)
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3301Audio 30 DIN Export
9
9
Page 10
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Connector interface
AF- amplifier
AF-section AF-amplifier (Board 4010) 3301Audio 30 DIN Export
Control-
AF- amplifier
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10
Page 11
Circuit diagram - Mercedes Benz MY98
D/A-converter
CSD - Version: 26/99
Fot-Unit
A/D-converter
Interface d2b-optical (Board 4010)
d2b-optical
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3301Audio 30 DIN Export
11
11
Page 12
Circuit diagram - Mercedes Benz MY98
Control„ON“
CSD - Version: 26/99
Control Shiftregister -Page 14-
EEPROM
Wake up-line
Wake up-line
Interface Wake up-Leitung, K-Leitung (Board 4010) 3301Audio 30 Export
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Page 13
Curcuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Latch1
Output
EPROM
P
Latch2
Input
Selection
Latch1: Output
Latch2: Input
Adress-
Latch
Control P-control (Board 4010) 3301Audio 30 DIN Export
RAM
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Page 14
Curcuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Shiftregister
EEPROM
Interface Wake up-Leitung, K-Leitung BUS -Seite 12-
Steuerung Shiftregister, EEPROM (Board 4010) 3301Audio 30 DIN Export
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14
Page 15
Curcuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Bandüber-
wachung
Cassettenabspieler
WAHRHEITSTABELLE
CCDOB CCDOC DOLBY MUTE MS-Sensor
0 0 OFF - BLANK-SKIP
0 1 OFF X MS-SUCHL.
1 0 B - BLANK-SKIP
1 1 C - BLANK-SKIP
Steuerung
MS, BSkip, Dolby B/C
Steuerung CC-Steuerung, Dolby B/C (Board 4010)
CC-Ampl.,
Dolby B
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3301Audio 30 DIN Export
15
15
Page 16
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Illumination
control
Keyboard
Illumination
-on-
Front Front-Interface (Board 4010)
Illumination
control
Display
Illumination
-Brightness-
BE
3301Audio 30 DIN Export
16
16
Page 17
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Resetcontrol
Illumination on
Keyboard
and
LCD
Keyboard central
Keyboard right
CC-slot
Keyboard
right
Keyboard central
Anti-Theft-
Diode
control
Switch
Front
fixed
Front-P
IR-Diode
Wake up
Front-P
Keyboard central
Front Front-P, Keyboard central and right (Board 9090) 3301Audio 30 DIN Export
Keyboard
right
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Page 18
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
Illumination
on / off-switch
Illumination
Keyboard left
Keyboard
left
Increment pick-up
Volume,
on / off-switch
Front Keyboard left (Board 9060) 3301Audio 30 DIN Export
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Page 19
Circuit diagram - Mercedes Benz MY98
CSD - Version: 26/99
LCD-Treiber
Spannungen für
LCD-Treiber
Beleuchtung
Display
Front Display (Board 9080) 3301Audio 30 DIN Export
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19
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