DISCOVERY
ETM E7
CIRCUIT OPERATION
The audio system consists of a new head unit
connected to a Radio Tune Switch, a waveband
switch, a volume up and a volume down switch
which are located on the fascia next to the
Instrument Cluster. The system is also equipped
with an amplifier, a subwoofer, a subwoofer
amplifier and a CD changer which is connected to
the Radio with a DIN cable. The amplifier is
connected to power via a Power Amplifier Relay
which is energized with Ignition on.
The control head is equipped with an anti–theft
feature which makes the unit innoperative once
battery power is removed. A security code must be
entered to restore power to the unit. The system is
equipped with two rear and two front speakers.
Battery voltage is provided to the control head at all
times through the P wire. In addition to monitoring
the anti–theft feature, this input keeps the preset
station memory alive. Whenever battery power to
the unit is lost, the anti–theft code must be entered
and the preset stations must be reprogrammed.
When the Radio (Z111) and the ignition are turned
on, the voltage signal through the LGO wire and
the control head`wakes up' the unit. The Radio
(Z111) plays, the VF display comes on and the
control unit buttons illuminate. The VF display is
dimmed when the headlights or park lights are
turned on. When the lights are on, voltage from
fuse F8 of the Fascia Fusebox (P126) is applied to
the Radio (Z111) terminal 6, Connector 230
signalling the Radio (Z111) to dim the display.
E L E C T R I C A L T R O U B L E S H O O T I N G M A N U A L
1
| Categories | Land Rover, Land Rover Discovery |
|---|---|
| Tags | Land Rover |
| Model Year | 1995 |
| Download File |
|
| Document Type | Electrical Troubleshooting Manual |
| Language | English |
| Product Name | Discovery |
| Product Brand | Land Rover |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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