Discovery 2. Manual - part 755

IN CAR ENTERTAINMENT

DESCRIPTION AND OPERATION

86-6-3

High line ICE system control diagram

1 Fusible link
2 Battery power supply fuse
3 Remote radio control switches
4 Radio cassette
5 CD-autochanger
6 Telephone system interface
7 Speed signal from SLABS ECU
8 Speakers
9 Power amplifier

10 Auxiliary power supply fuse
11 Auxiliary relay
12 Radio headphone amplifier RH rear
13 Radio headphone amplifier LH rear
14 Amplifier FM aerial
15 FM aerial
16 Amplifier AM/FM aerial
17 AM/FM aerial

IN CAR ENTERTAINMENT

86-6-4

DESCRIPTION AND OPERATION

Description

General
The in car entertainment (ICE) system allows the driver and passengers to listen to audio output from the speakers
or optional headphones inside the vehicle. Buttons or knobs on the radio cassette allow changes of levels or
selections during the various modes of operation. The system can be controlled from the fascia mounted radio
cassette, or optional remote control switches on the left hand side of the steering wheel. High line systems may also
have rear headphone amplifiers that have some control of the system via the radio cassette player.

One or two amplified aerials located in the rear side windows send radio signals to the radio cassette player. On high
line systems a power amplifier and a CD-autochanger may be located under the front seats. Speakers are located in
the lower door panels, additional speakers may be located in upper door trim, the A-post and the tail door. A display
screen shows the user the current system status.

The ICE supplied varies with trim level and market. Vehicles may not have all of the speakers, amplified aerials, CD-
autochanger, rear headphone amplifiers or power amplifier.

Base system radio cassette
The base radio cassette has buttons for LD (loudness) AM, FM, EJECT (tape), Reverse, Base/Balance, treble, MAN
forward and reverse. The base radio cassette is located in the center of the fascia and contains the radio and tape
player, four clips (accessible through holes in the front of the unit) secure the unit in the fascia. To remove the unit
the four clips must be released with a special tool. The base system can be controlled from the fascia mounted radio
cassette. A logic control circuit in the radio cassette player controls the operation in the various control modes.

The radio cassette has a display screen, the information shown can be the current radio frequency, tape operating,
bass or loudness settings. Power for the illumination on the radio cassette is supplied from the passenger
compartment fuse box. A main fuse is also located in the connector socket area on the back of the radio cassette.

Security code function
A combination of buttons on the radio cassette are used to input and change security codes. Security codes make the
unit unusable if the unit is disconnected from the vehicle without deactivating the security code. The radio cassette
has an internal memory chip that stores the code information, if the power is removed from the unit the chip will
activate the security code feature. For this reason the security code feature must be deactivated before the unit is
removed or the vehicles battery is disconnected.

Audio functions
The radio cassette has buttons for the following audio functions: LD (loudness), bass/balance, fader, treble and
volume.

Cassette functions
The radio cassette has buttons for the following cassette functions: eject, forward, reverse and tape reversal.

Multi function buttons
The function of presets 1-6 and the MAN button depends on current mode of operation and allows selection of radio
band, radio on, tape track and search/seek functions. The MAN button is mode dependent, when pressed the button
allows manual operation or alternate mode selections such as manual tuning.

Internal memory
An internal memory chip stores the station presets and security code, power is supplied internally to the chip via a
permanent power feed, supplied from the passenger compartment fuse box.

IN CAR ENTERTAINMENT

DESCRIPTION AND OPERATION

86-6-5

Radio cassette player connector pin details.

Connector/Pin No.

Description

Input/Output

C0092

Rear RH speaker line

Output +

Rear RH speaker line

Output -

Front RH speaker line

Output +

Front RH speaker line

Output -

Front LH speaker line

Output +

Front LH speaker line

Output -

Rear LH speaker line

Output +

Rear LH speaker line

Output -

C0098

Telephone mute

Input

Steering wheel remote radio controls

Input

Steering wheel remote radio controls

Output

Permanent battery feed

Input

System enable

Output

Illumination

Input

Auxilary feed

Input

Earth

Input

C0921 (high line systems)

Radio headphone left channel

Output +

Radio headphone right channel

Output +

Telephone audio

Input +

Radio headphone left channel

Output -

Radio headphone right channel

Output -

Telephone audio

Input -

C0922 (high line systems)

Radio headphone active

Input

IN CAR ENTERTAINMENT

86-6-6

DESCRIPTION AND OPERATION

Midline system radio cassette
The midline radio cassette is located in the center of the fascia and contains the radio and tape player, four clips
(accessible through holes in the front of the unit) secure the unit. To remove the radio cassette unit the four clips
must be released with a special tool. The midline system can be controlled from the fascia mounted radio cassette,
or from remote radio control switches on the left hand side of the steering wheel. The audio signal can be from the
radio, cassette player or a optional CD-autochanger. A logic control circuit in the radio cassette player controls the
operation in the various control modes.

The radio cassette has a display screen, information shown can include current status, station (radio mode) or
cassette tape track or (optional) CD-autochanger track/disc status. Power for illumination on the radio cassette is
supplied from the passenger compartment fusebox. A main fuse is also located in the connector socket area on the
back of the radio cassette.

Security code function
A combination of buttons on the radio cassette are used to input and change security codes. Security codes make the
unit unusable if the unit is disconnected from the vehicle without deactivating the security code. The radio cassette
has an internal memory chip that stores the information, if the power is removed from the unit the chip will activate the
security code feature. For this reason the security code feature must be deactivated before the unit is removed or the
vehicles battery is disconnected.

Audio functions
A rotary knob allows changes of levels or selections during the various modes of operation, this includes volume,
bass, treble and fader.

Cassette functions
The radio cassette has buttons for the following cassette functions eject, tape, reverse, forward, tape eject/reversal.

Radio functions
The radio cassette has buttons for the selection of AM or FM reception. Selection of the radio station is controlled by
the use of the multi-function buttons on the radio cassette player, the radio headphone amplifiers or the remote radio
controls on the steering wheel.

Traffic information and news function
A traffic information button (TA/NEWS) allows traffic or news information to be selected on the FM waveband only, in
this mode the audio output will mute when traffic or news messages are received. After the traffic or news message
the radio, cassette tape or CD will resume play, the traffic and news information varies with the country of use and
radio band selected.

I-BUS communications

Input/Output

Audio amplifier spatial imaging enable

Output

Radio headphone LH remote control

Input

Radio headphone RH remote control

Input

Headphone remote controls feed

Output

C1354 (high line systems)

CD-autochanger audio left channel

Input +

CD-autochanger audio right channel

Input +

CD-autochanger audio earth

Output

CD-autochanger audio left channel

Input -

CD-autochanger audio right channel

Input -

Not Used

CD-autochanger I-BUS communications link

Input/Output

CD-autochanger permanent feed

Output

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