CD changer MERCEDES-BENZ ML500 1997 Complete Owner's Manual

4-channel power amplifier for vehicle loudspeakers
System interlinkage
The radio and navigation unit (A2/56) is provided with the following components for data exchange with
external digital components:
CAN (A1 -A2/56)
The radio and navigation unit (A2/56) is connected with the instrument cluster (A1) via a separate
CAN bus. The difference to the other CAN systems is indicated by the spelling CAN bus (A1-A2/56).
The CAN bus (A1-A2/56) allows the following functions:
Operation of the radio and navigation unit (A2/56)is also possible with the multifunction steering
wheel.
The multifunction display (A1/p13) in the instrument cluster (A1) can display navigation
information on the current operating status of the radio and navigation unit (A2/56) .
The connection to the CAN bus (A1-A2/56) is only realized on models 208 and 210. (Status 3/99)
Digital data bus (D2B)
Data can be exchanged between the external audio components, the telephone system and - if present -
the voice control system over the D2B bus. This allows control data as well as the actual audio signals
(e.g. music from CD changer) to be transferred.
The only additional D2B component presently possible is the CD changer (A2/6) (Status: 3/99)
K bus (diagnostic interface)
Data exchange is accomplished between the diagnostic interface and the hand-held tester (reading out
DTCs and actual values, ...).
The communication between the HHT and all other D2B components is accomplished over the radio
and navigation unit (A2/56) diagnostic interface.
Audio 30 APS, location of
componentsModel 163GF82.61-P-0002-01D
Model 168GF82.61-P-0002-01B
Model 170GF82.61-P-0002-01A
Model 208, model 210&.2.(GF82.61-P-0002-
01C)
Audio 30 APS block
diagramModel 163GF82.61-P-0002-02D
Model 168GF82.61-P-0002-02B

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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RADIO AND NAVIGATION MODULE, DESIGN - GF82.61-P-4109-03GI
The following is integrated into the radio and navigation module (A2/56) (maximum scope):
Graphic compatible 5" LCD color display
Navigation processor with GPS receiver and gyrosensor
Single CD drive for playing audio CD's (option)
Navigation CD drive for loading navigation data or for playing audio CD's (optional)
Telephone unit (optional)
Radio tuner
Audio amplifier
CC player
The radio and navigation module (A2/56) has the following digital interfaces:
Digital data bus (D2B)
K-cable (diagnosis interface)
Fig. 58: Identifying Radio And Navigation Module (A2/56) Design

RADIO AND NAVIGATION MODULE, FUNCTION - GF82.61-P-4109-04A
Models 163, 168, 170, 208, 209, 210 with code 353
Processing key signals
The controls on the radio (A2) are read in via I/O ports of the microcontroller and made available to the central
computer. Depending on the system function the button operations are processed further in the central computer
or conveyed via the Digital Data Bus (D2B) or interior CAN (CAN B) in the form of a data telegram to the
system components involved (e.g. CD changer).
Display

2001 Mercedes-Benz ML320
1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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Map data.
The digitized map area on the CD-ROM contains towns, cities, streets, intersections and their attributes (e.g.:
one-way streets, turn prohibitions, ...). It does not contain information about company and private ground,
farms, housing estates and agricultural roads.
Gyrosensor
The gyrosensor determines the direction change of the vehicle. It is installed in the navigation processor .
Calibration is not required.
RADIO AND NAVIGATION UNIT, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.61-P-4109A
MODEL 163,168,170, 208, 210 with CODE (353) Audio 30 APS
Fig. 59: Identifying Radio And Navigation Unit

Radio and navigation
unit, location GF82.61-P-4109-01A
Radio and navigation
unit, purposeRadio reception and
operation
Input/output and control
unit for navigation
Amplification of audio
signals
Control of integrated CD
player and (optional) CD
changer (A2/6)

Radio and navigation
unit, design GF82.61-P-4109-03A
Radio and navigation
unit, function GF82.61-P-4109-04A

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SURVEY OF SYSTEM COMPONENTS, AUDIO 30 APS, LOCATION/TASK/ DESIGN/FUNCTION - GF82.61-P-9998ZZ
MODELS 163, 168, 170, 203.0 /2 /7, 208, 209.3 /4, 210 with CODE (353) Audio 30 APS
CD changer
(optional)
Sound system
(optional)
Navigation system
(optional)
Telephone (optional)
Radio and navigation
module, design GF82.61-P-4109-03GI
Radio and navigation
module, function GF82.61-P-4109-04GI
Radio and navigation unit,
location/task/design/ functionModel 163, 168,
170,208,210GF82.61-P-4109A
Model 209GF82.61-P-4109QA
Radio location/task/design/functionModel 203GF82.60-P-4109P
Additional fan for radio/navigation
unit, location/ taskModel 203 as of
1.6.03GF82.61-P-4110P
FM/AM antenna amplifier,
location/task/design/ functionModels 163, 168,
170, 208.4, 210.2GF82.62-P-4101A
Models 208.3, 210
(except, 210.2) with
code 352a
Antenna amplifier module,
location/task/design/ functionModels 203.0/7,
209.3GF82.62-P-3105PP
Model 203.2GF82.62-P-3105PS
Model 209.4GF82.62-P-3105QA
Rear window antenna,
location/task/design/ functionModels 203.0/7,
209.3GF82.62-P-3106PP
Model 203.2GF82.62-P-3106PS
Windshield antenna,
location/task/design/ functionModel 209.4GF82.62-P-3112Q
Radio reception antenna, location/taskModel 209.4GF82.62-P-4103Q
Radio reception amplifier, location/taskModel 209.4GF82.62-P-4104Q
Telephone antenna, location/taskModels 203.0/2/7,
209.3GF82.62-P-4105PP
Model 209.4GF82.62-P-4105Q
GPS/telephone roof antenna,
location/task/ design/functionModels 163, 168,
208.3, 210GF82.70-P-4111A

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Global positioning system antenna,
location / task / design / functionModels 170, 208.4GF82.61-P-4106A
Models 203.0/2/7,
209.3GF82.61-P-4106E
Global positioning system antenna,
location/ taskModel 209.4GF82.61-P-4107Q
Antenna splitter,
location/task/design/functionModel 163GF82.85-P-3107B
CD player with changer,
location/task/design/ functionModels 209.3/4GF82.64-P-3113Q
Models 203.0/2/7
with code (819) CD
changer 6-discGF82.64-P-3113PA
Models 163, 208,
210 with code (819)
CD changer 6-discGF82.64-P-3113B
Sound amplifier,
location/task/design/functionModels 209.3/4 with
code (810) sound
system
Models 203.0/2/7 up
to 23.4.04 with code
(810) Sound systemGF82.62-P-3100Q
Models 203.0/2/7 as
from 24.4.04 with
code (810) sound
system, except code
(498) Japan version,
except code (494a)
USA versionGF82.62-P-3100PM
Telephone interface,
location/task/design/ functionModels 203.0/2/7,
209.3/4GF82.70-P-3107Q
Transmitter/receiver unit,
location/task/design/ functionModels 203.0/2, 210
With code (853) MB
Standard telephone
With code (855)
TELE AID
With code (930)
Taxi emergency call
Models 203.7, 208.3,
209.3/4
With code (853) MB
Standard telephone
With code (855)
TELE AIDGF82.95-P-4300A
Table of contents, function description
of Audio 30 APS GF82.61-P-0998ZZ

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CD PLAYER WITH CHANGER, LOCATION - GF82.64-P-3113-01GI
The CD player with changer is located behind the access flap in the right side cover of the trunk.
Fig. 73: Identifying CD Player With Changer Location

CD PLAYER WITH CHANGER, FUNCTION - GF82.64-P-3113-02GI
Controlling CD player
The CD player with changer (in trunk) (A2/6) is controlled by the radio and navigation module (A2/56)via
the digital data bus (D2B).
The CD player generates reports on the following operating conditions:
No magazine in CD changer
Magazine assignment (only with music CD)
Number of current CD
Number of current title
List of occupied slots (CDs)
Title number per disc
Current operating state (acoustic playback of radio signals, pause, etc.)
The messages are stored on the digital data bus D2B ) and interpreted by the radio and navigation module
(A2/56) .
CD playback
The audio data is stored digitally on the CD-ROM . The audio CD is driven by a motor in the CD-player with
changer (in trunk) (A2/6) .
location/task
Contents - function description
of antenna system (ATS) GF82.62-P-0999GHZ

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The laser-optical device scans the non-labeled side of the rotating CDwithout making contact and converts the
digital optical signals into electrical signals. Small interruptions in the data flow of the laser optics caused by
scratches or contamination on the audio CD are compensated by the D/A converter supplementing the missing
values .
The electrical signals are then decoded in the CD player with changer (in trunk) (A2/6) and transmitted via
the digital data bus ( D2B ) to the radio and navigation module (A2/56) via the audio signal processing or
when the sound amplifier (A2/13) (code 810) is installed to the loudspeakers.
Jumps and interruptions during playback
On bad roads or in the event of heavy vibrations , jumps and interruptions can occur during playback. In
such cases do not start CD mode until better road conditions are present.
In the event of wet weather conditions and strong deviations in the ambient temperatures moisture can collect in
the CD player housing (condensation formation). This could also lead to malfunctions in the playback. In such
cases provide for sufficient ventilation of the CD player and the trunk.
CD PLAYER WITH CHANGER, LOCATION/TASK/DESIGN/FUNCTION - GF82.64-P-3113B
MODELS 163, 208, 210, 215, 220 with CODE (819) 6-disc CD changer
MODELS 208, 210, 215, 220 with CODE (819a) CD changer with CODE (498) Japanese version
Shown on model 220 (as of 1.9.02)
Fig. 74: Identifying CD Changer (In Trunk) Location

CD player with changer,
locationThe CD player with
changer (in the trunk)
(A2/6) is located in the
trunk near the left side
wall.
Model 163GF82.64-P-3113-01GI
Models 208, 210GF82.64-P-3113-01D
Models 215, 220 with GF82.64-P-3113-01F

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CD PLAYER WITH CHANGER, LOCATION/PURPOSE/DESIGN/FUNCTION - GF82.64-P-3113GI
MODEL 163 with CODE (522) Modular control system (MCS) radio USA with CODE (357) Navigation
system - additional unit with CODE (818b) Single CD player - additional unit with CODE (819) 6-disk
CD changer in trunk with CODE (491) U.S. version
code 498
Models 215, 220 without
code 498GF82.64-P-3113-01E
CD player with changer,
purposePlaying audio
compact discs (CD)
Changing CDs
contained in the
magazine

CD player with changer,
design6-slot CD changer
magazine
only: 12-slot
CD changer
magazine
Digital Data Bus
(D2B) interface

The factory planned
installation position for
the CD changer is vertical,
whereby other installation
positions are possible by
adaptation of the spring
locations.

CD player with changer,
functionModels 208, 210GF82.64-P-3113-02C
Model 215, 220GF82.64-P-3113-02B

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Fig. 75: Identifying CD Player With Changer
GPS/CTEL ROOF ANTENNA, LOCATION - GF82.70-P-4111-01GH
Model 163
Location, illustration valid up to 31.08.01:
The CTEL and GPS roof antenna (A2/49) is mounted on the rear of the roof in the middle of the vehicle.
CD player with changer,
location GF82.64-P-3113-01GI
CD player with changer,
purposePlaying audio
compact discs (CD).
Changing CD's
contained in the
magazine

CD player with changer,
designCD changer
magazine for 6 CD's
Digital data bus
(D2B) interface

The installation position
of the CD changer
predefined by the factory
is vertical, however
another installation
location is also possible
by adapting the spring
location

CD player with changer,
function GF82.64-P-3113-02GI

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1998-2005 ACCESSORIES & BODY, CAB Electrical System - Body - 163 Chassis
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MODULAR CONTROL SYSTEM (MCS), FUNCTION - GF82.85-P-0011GI
MODEL 163 as of 1.9.01 with CODE (522) Modular control system (MCS) radio USA with CODE (357)
Navigation system - additional unit with CODE (818b) Single CD player - additional unit with CODE
(819) 6-disk CD changer in trunk with CODE (491) U.S. version
The following systems can be operated centrally with the aid of the radio and navigation unit (A2/56) :
Cassette deck
Radio
Single CD player and CD player with changer (optional)
Sound system (optional)
Navigation (optional)
Telephone (optional)
Fig. 82: Identifying Radio And Navigation Unit
of two components:
CTEL antenna
(A2/49a1)
GPS antenna
(A2/49a2)
Model 163 as of 01.09.01GF82.70-P-4111-03GH
GPS/CTEL roof antenna,
functionCode 351 or code 353,
except models
129 /163 /220GF82.70-P-4111-04A
Code 353 for model 163GF82.70-P-4111-04D
Code 347 or 348 or 352
except models 168/163GF82.70-P-4111-04B
Model 163 as of 01.09.01GF82.70-P-4111-04GH

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