1999 LAND ROVER DISCOVERY battery

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.
C0922 (high line systems)
7 Radio headphone active Input
8 I-BUS communications Input/Output
9 Audio amplifier spatial imaging enable Output
10 Radio headphone LH remote control Input
11 Radio headphone RH remote control Input
12 Headphone remote controls feed Output
C1354 (high line systems)
13 CD-autochanger audio left channel Input +
14 CD-autochanger audio right channel Input +
15 CD-autochanger audio earth Output
16 CD-autochanger audio left channel Input -
17 CD-autochanger audio right channel Input -
18 Not Used
19 CD-autochanger I-BUS communications link Input/Output
20 CD-autochanger permanent feed Output

IN CAR ENTERTAINMENT
DESCRIPTION AND OPERATION 86-6-7
Multi function buttons
Rotary controls are located on the front of the radio cassette for adjustment of bass, treble etc, depending on current
mode selected. Operation of presets 1-6 depends on current mode of operation and allows selection of radio band
(Radio mode on) or CD-autochanger disc (in the CD mode). Scan (Mode dependent) manual or automatic selection
of band or track. RND random play, MODE/MUTE (mode dependent) when pressed the button allows manual
operation or alternate mode selections such as manual tuning, compact disk cue/review, tape forward/rewind modes.
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.
High line system radio cassette
The high line radio cassette is located in the center of the fascia and contains the radio and tape player. Two clips
(accessible through slots in the front of the unit) secure the unit. To remove the radio cassette unit the two clips must
be released with a special tool. The high line 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. In vehicles fitted with radio headphone
amplifiers, the rear seat passengers can control their individual audio output using a headphone amplifier control
panel. The audio signal can be from the radio, cassette player or a 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 includes current status, station (Radio mode) , CD-
autochanger track/disc status or status of headphone amplifier. 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. When the radio cassette switch is on, power is made available via internal circuits to the radio
headphone amplifiers.
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, fader and spatial on/off.
Cassette functions
The radio cassette has buttons for the following cassette functions; eject, fast forward, rewind and dolby. The dolby
symbol is shown on the dot matrix display screen if dolby mode is selected.
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.
CD-autochanger functions
The CD button on the radio cassette player allows selection of the CD-autochanger. CD disc and track selection 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 function
A traffic/news information button (I) allows traffic or news information to be selected on the FM waveband only, in this
mode the radio 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.

IN CAR ENTERTAINMENT
DESCRIPTION AND OPERATION 86-6-9
Inputs and outputs
The radio cassette player receives a mute signal from the telephone system if a call is received, when the call finishes
the mute is removed and the system resumes play. Inputs are also received from the steering wheel control system
(mid line and high line sytems). When the system is turned on, the high line systems radio cassette player:
lsends a 'power on enable' to the power amplifier
lsends an 'enable' signal to the radio headphone amplifiers.
On the high line system the radio cassette player also sends and receives signals from the CD-autochanger and rear
headphone amplifiers (if fitted). On high line systems the radio cassette player sends audio signals to the power
amplifier.
Remote radio steering wheel controls (midline and high line systems)
The remote radio control switch is located on the LH side of the steering wheel and is secured with two screws. The
wiring from the remote radio control switch plugs in to a connector that is part of the steering wheel rotary coupler.
Operation of the remote radio control switches allow the driver to control the ICE without releasing the steering wheel.
Volume, mode and selection functions can be carried out using the steering wheel mounted control switches. Control
inputs from the remote radio control switches are sent to the radio cassette player.
C0098
1 Telephone mute Input
2 Steering wheel remote radio controls Input
3 Steering wheel remote radio controls Output
4 Permanent battery feed Input
5 System enable Output
6 Illumination Input
7 Auxilary feed Input
8 Earth Input
C0921 (high line systems)
1 Radio headphone left channel Output +
2 Radio headphone right channel Output +
3 Telephone audio Input +
4 Radio headphone left channel Output -
5 Radio headphone right channel Output -
6 Telephone audio Input -
C0922 (high line systems)
7 Radio headphone active Input
8 I-BUS communications Input/Output
9 Audio amplifier spatial imaging enable Output
10 Radio headphone LH remote control Input
11 Radio headphone RH remote control Input
12 Headphone remote controls feed Output
C1354 (high line systems)
13 CD-autochanger audio left channel Input +
14 CD-autochanger audio right channel Input +
15 CD-autochanger audio earth Output
16 CD-autochanger audio left channel Input -
17 CD-autochanger audio right channel Input -
18 Not Used
19 CD-autochanger I-BUS communications link Input/Output
20 CD-autochanger permanent feed Output

IN CAR ENTERTAINMENT
DESCRIPTION AND OPERATION 86-6-15
1Overhead console assembly
2CD autochanger
3Radio head unit
4Fuse 15 (20A) – Auxiliary power supply
5Fuse 27 (15A) – Permanent battery supply
6Passenger compartment fusebox
7CD Switch box
8Noise filter

IN CAR ENTERTAINMENT
86-6-20 DESCRIPTION AND OPERATION
Remote Control Handset
The remote control handset is supplied with the system and communicates with the overhead console via an infra-
red signal transmission. The handset has 50 buttons which control all DVD functions, with the exception of the volume
control. Volume control is performed by the rotary control supplied with the headphones or by the Audio head unit
volume control for the vehicle audio speakers.
The handset is powered by two, AAA size batteries. These are located behind a sliding cover on the rear face of the
handset. Battery life is approximately six months depending on usage.
To prolong the life of the handset, observe the following precautions:
lDo not leave the remote control near any heat sources or in direct sunlight. Store the handset in the vehicle
glovebox or door pocket to protect it from direct sunlight.
lAlways replace both batteries at the same time. Do not use an old battery with a new one and avoid mixing
brands of batteries.
lEnsure that batteries are inserted correctly with the '+' and '-' symbols on the batteries matching the '+' and '-'
symbols in the battery compartment. Do not charge the batteries or use re-chargeable batteries.
lIf the unit is to be unused for along period of time, remove the batteries from the handset.
If battery leakage occurs, remove and discard the defective batteries in line with local guidelines. Clean the interior of
the battery compartment using a mild household detergent on a damp soft cloth.
Connector Details
The following tables give input/output information for the DVD system harness connectors.

IN CAR ENTERTAINMENT
DESCRIPTION AND OPERATION 86-6-21
Connector C01
Connector C01 is located on the overhead console and transmits signals between the overhead console and the CD
switch.
Pin No. Description Input/Output
1 Shield ground Input
2 Audio Left from console to CD switch Output
3 Audio return from console to CD switch Output
4 Audio right from console to CD switch Output
10 Signal ground Input
11 Vehicle data 1 from console to CD switch Input/Output
12 – 13 Not used–
14 Vehicle data 4 – Connected to pin 10 Input
15 Vehicle data 5 – Connected to pin 10 Input
16 Vehicle data 6 – Data from console to CD switch Input/Output
17 – 21 Not used–
22 Accessory power from CD switch to console Input/Output
23 Battery power from CD switch to console Input
24 Power ground from CD switch to console Input

IN CAR ENTERTAINMENT
86-6-22 DESCRIPTION AND OPERATION
Connector C04
Connector C04 is located on the CD switch and transmits signals between the CD switch and the overhead console.
Pin No. Description Input/Output
1 Shield ground Input
2 Audio left from console to CD switch Input
3 Audio return from console to CD switch Input
4 Audio right from console to CD switch Input
5 Vehicle data 5 – Connected from console to CD switch Input/Output
6 Vehicle data 1 – Connected between console and CD switch Input/Output
7 Vehicle data 6 – Connected between console and CD switch Input/Output
8 Accessory power from CD switch to console Input 12V
9 Battery power from CD switch to console Input 12V
10 Power ground from CD switch to console Input

IN CAR ENTERTAINMENT
86-6-24 DESCRIPTION AND OPERATION
Connector C08
Connector C08 is located in the harness from the CD autochanger to the CD switch.
Pin No. Description Input/Output
1 Audio right + from CD autochanger to CD switch Input
2 Audio right – from CD autochanger to CD switch Input
3 – 4 Not used–
5 I Bus data connection between CD autochanger and CD switch Input/Output
6 Audio left + from CD autochanger to CD switch Input
7 Audio left – from CD autochanger to CD switch Input
8 Power ground from head unit to CD autochanger Input
9 Not used–
10 Battery power from head unit to CD autochanger Input