radio BMW X5 2002 E53 Wide Screen On Board Monitor Workshop Manual

5
Widescreen board monitor
Display Screen and Control Panel
The display screen has a diagonal width of 6.5’’ and an aspect ratio of 16:9 compared to
the previous monitors that had a ratio of 4:3. The new screen also uses a Ad-TFT display
(Advanced Thin Film Transistor). This type of screen uses ambient light in addition to back-
lighting in order to illuminate the display. The advantage is a constant contrast and
brightness level at all ambient lighting conditions.
11.13.2000Thursday10:17
INFO
1
4
25
36
FM AM
MODEMENU
TONE SELECT
MENU
On-board computer
DSP
Code
SetGPS-Navigation
Monitor off Emergency
Aux. Ventilation
INFO = Activates the soft key menu for RDS and PTY
1-6 BUTTONS = Audio presets and CD selection
AM/FM SELECTION
MODE/DISPLAY = Mode selects between audio functions. Display alternates between
radio display and other displays. BC,TEL,NAV etc.6.5 INCH DISPLAY
16:9 ASPECT RATIO
PHOTOCELL SENSOR
RADIO STATUS LED = Signal from
radio via I/K bus.
AUXILIARY FAN INDICATOR LED
RADIO CONTROL KNOBON-BOARD MONITOR CONTROL
KNOB
INFO
1
4
25
36
FM AM
MODE
MENU
TONE SELECT
TELEPHONE STATUS LEDs / EJECT = Tilts monitor to access cassette drive.
TELEPHONE = Send/End button
TAPE REVERSE/CLOCK =Clock: Pressing with key off displays time. Aux. ventilation
can be switched by holding button longer.
TONE/SELECT=Tone: Dolby (cassette only) and audio adjustments.
Select: Choose between station search methods (a,m or scan).
FAST FORWARD/REVERSE / STATION SEARCH
MENU = Returns display to main menu

7
Widescreen board monitor
Principle of operation
The on-board monitor is an input and display device that performs no internal calculations.
Inputs from the control panel buttons and knobs are converted into I-bus (K-bus E46)
signals by the BM control panel. All of the devices controlled by the BM are connected to
the I/K bus interface.
The navigation computer contains the graphics stage integrated into the navigation
computer housing. Request for on-board monitor displays are made to the navigation
computer via the I/K bus. The navigation computer generates the RGB video signals and
transmits them via 3 shielded wires.
Audio signals generated by the cassette drive are sent via traditional audio wires (4) to the
radio (located in the trunk or cargo area) for output to the audio system amplifier.
Workshop Hints
Service mode
Access for the radio, on-board monitor and navigation service modes is available through
the on-board monitor screen.
To enter the radio service mode:
 Turn the ignition key to position 1 (KLR).
 Turn the radio on, then off, then on again.
 Press the “INFO” button. From the selection list choose “RDS”.
 Press and hold the on-board monitor control knob for at least 8 seconds.
 The audio display window will show the radio serial number as the first display.
 The station search < > buttons are used to scroll through the various settings.
 Turn off the radio to “set” any changes made.
Note: See the “NG” Radios
module for a list of the
tests and settings available
in the radio service mode.
11.13.2000Thursday10:17
INFO
1
4
25
36
FM AM
MODEMENU
TONE SELECT
INFO
PTY
RDS
1
3 2

9
Widescreen board monitor
Diagnosis
Fault driven diagnosis is possible using the DIS/MoDiC Diagnosis Program. The Diagnosis
Program features:
 Identification
 Read/Clear fault memory
 Diagnosis requests
 Fault driven test modules. (E46 concept)
Review Questions
1. Which component is responsible for providing the display signals to the wide screen on-
board monitor?
2. How does the radio receive the control requests from the on-board monitor control
panel?
3. What tests and adjustments are available in the service mode that are specific to the
on-board monitor?
BMWDISB
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WD
I
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BMWDISB
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WD
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