97 Disco Radio
#1
09-29-2011, 09:24 PM
97 Disco Radio
Just bought a 97 Disco, the radio turns on, but the only sound is from the speakers on the back door. Not good sound but noise, sounds like when a speaker is blown.
Any ideas? I did search but I am pretty much computer stupid.
One more question, the cruse does not work where do I start lookong?
Thanks
Chuck
Any ideas? I did search but I am pretty much computer stupid.
One more question, the cruse does not work where do I start lookong?
Thanks
Chuck
#2
09-29-2011, 09:55 PM
Super Moderator
First the bad news: you need to use a computer to download the free set of shop manuals below called the RAVE. Covers electrical also.
You need to go to the technical area of the Disocvery 1 section on this forum and look at the write ups, especially the one for 60K mile service.
Change oil early and often, like 5000 miles. Check all fluids weekly, this is a Rover.
Keep eyeball on temp gauage - above 9:00 is starting to overheat.
Now for the cruise: see https://landroverforums.com/forum/di...-layout-44078/, a post that has pictures of where all the vacuum lines go under the hood, could be a loose or cracked line.
Now for the radio:
From the RAVE tech manual:
My sub woofer and amp were part of the back door. The front/rear speakers go directly to the radio. Common for sub woofer speaker cones to be blown out.
Not sure if you have a security code to enter for the radio, it may have gone to sleep after a dead battery.
You need to go to the technical area of the Disocvery 1 section on this forum and look at the write ups, especially the one for 60K mile service.
Change oil early and often, like 5000 miles. Check all fluids weekly, this is a Rover.
Keep eyeball on temp gauage - above 9:00 is starting to overheat.
Now for the cruise: see https://landroverforums.com/forum/di...-layout-44078/, a post that has pictures of where all the vacuum lines go under the hood, could be a loose or cracked line.
Now for the radio:
From the RAVE tech manual:
CIRCUIT OPERATION
The audio system consists of a new head unit, and
for mid/high– range, a subwoofer and subwoofer
amplifier. For mid– and high–range, the system is
also equipped with a radio waveband switch and a
tune switch, a volume up and a volume down switch
which are located on the fascia next to the
instrument cluster.
The control head is equipped with an anti–theft
feature which makes the unit inoperative once
battery power is removed. A security code must be
entered to restore power to the unit. On every level
the system is equipped with two rear and two front
speakers. Optional front tweeters are available for
high line radio.
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
for mid/high– range, a subwoofer and subwoofer
amplifier. For mid– and high–range, the system is
also equipped with a radio waveband switch and a
tune switch, a volume up and a volume down switch
which are located on the fascia next to the
instrument cluster.
The control head is equipped with an anti–theft
feature which makes the unit inoperative once
battery power is removed. A security code must be
entered to restore power to the unit. On every level
the system is equipped with two rear and two front
speakers. Optional front tweeters are available for
high line radio.
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.
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.
Side Screen Antenna
The antenna is now printed into the rear side screen
on four door models. For America and Japan the
element is fitted in both rear side screens, known as
diversity antenna system. Other markets have a
single element in the right hand side screen only.
Diversity reception means that if vehicle movement
results in a loss of signal due to reflections from
buildings (known as multipath distortion), the radio
will switch to the antenna receiving the strongest
signal. This results in less interference and better
stereo performance.
on four door models. For America and Japan the
element is fitted in both rear side screens, known as
diversity antenna system. Other markets have a
single element in the right hand side screen only.
Diversity reception means that if vehicle movement
results in a loss of signal due to reflections from
buildings (known as multipath distortion), the radio
will switch to the antenna receiving the strongest
signal. This results in less interference and better
stereo performance.
Antenna Amplifier
New antenna amplifiers are located behind the
headlining above the side screen antenna(s). Right
hand side fitment is an FM + AM amplifier, left hand
side, diversity, is an FM only amplifier.
headlining above the side screen antenna(s). Right
hand side fitment is an FM + AM amplifier, left hand
side, diversity, is an FM only amplifier.
Subwoofer
The subwoofer unit is located in the right hand side
of the luggage compartment. It amplifies frequencies
between 20 and 150 Hz to give an enhanced bass
sound.
of the luggage compartment. It amplifies frequencies
between 20 and 150 Hz to give an enhanced bass
sound.
Subwoofer Amplifier
The amplifier is fitted on top of the subwoofer unit.My sub woofer and amp were part of the back door. The front/rear speakers go directly to the radio. Common for sub woofer speaker cones to be blown out.
Not sure if you have a security code to enter for the radio, it may have gone to sleep after a dead battery.
#3
09-30-2011, 09:11 AM
TReK
The radio on the dash does not have an amplifier in it. It feeds an amp that is in the passengers footwell. From there the amplified signal goes to the two speakers/tweeters in the front, and the two speakers on the rear panels ('D' column if you will). An un-amplified signal is also sent from the amp to the rear door where you have a small amplifier and two subwoofers.
If none of the four are producing sound, you either have four blown speakers OR they are not hooked up to the amp.
It is really hard to determine what the prior owner may have done.
The first test I'd do is to pull the speakers out of the door and see if they function. Hook them up to a home stereo at a very low volume to see if they produce sound.
If they do, you need to take a closer look at the amp in the footwell
If none of the four are producing sound, you either have four blown speakers OR they are not hooked up to the amp.
It is really hard to determine what the prior owner may have done.
The first test I'd do is to pull the speakers out of the door and see if they function. Hook them up to a home stereo at a very low volume to see if they produce sound.
If they do, you need to take a closer look at the amp in the footwell
Last edited by WaltNYC; 09-30-2011 at 09:14 AM.
#7
10-03-2011, 11:00 AM
Mudding
Join Date: Aug 2011
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#8
10-03-2011, 11:18 AM
Super Moderator
#9
10-03-2011, 07:06 PM
The radio on the dash does not have an amplifier in it. It feeds an amp that is in the passengers footwell. From there the amplified signal goes to the two speakers/tweeters in the front, and the two speakers on the rear panels ('D' column if you will). An un-amplified signal is also sent from the amp to the rear door where you have a small amplifier and two subwoofers.
If none of the four are producing sound, you either have four blown speakers OR they are not hooked up to the amp.
It is really hard to determine what the prior owner may have done.
The first test I'd do is to pull the speakers out of the door and see if they function. Hook them up to a home stereo at a very low volume to see if they produce sound.
If they do, you need to take a closer look at the amp in the footwell
If none of the four are producing sound, you either have four blown speakers OR they are not hooked up to the amp.
It is really hard to determine what the prior owner may have done.
The first test I'd do is to pull the speakers out of the door and see if they function. Hook them up to a home stereo at a very low volume to see if they produce sound.
If they do, you need to take a closer look at the amp in the footwell
Chuck
#10
10-03-2011, 11:59 PM
Mudding
Join Date: Aug 2011
Location: Philadelphia PA
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