EC 4790 CD
Allgemeiner T
eil / General Section
GRUNDIG
Service
1 - 11
Installation and Removal
The Figures to installation and removal are to
be found at the beginning of this booklet.
Installation materials and accessories
Your dealer can advise you as to what installa-
tion materials you will need and what acces-
sories are available.
Installing the mounting frame
Figure
o
– Insert mounting frame b into cutout a of the
vehicle.
– Bend the tabs c behind cutout a as required
(depending on type of vehicle).
Inserting the car radio
Figure
o
– Insert the car radio all the way into the
installed mounting frame b.
The car radio should snap into place.
Removing the car radio
Figure
a
Insert the two removal handles d as far as
possible into the openings in the trim.
Press both removal handles outwards and
slowly pull the radio out.
Aerial
The car radio is designed for aerials with an
impedance of 75
Ω
to 150
Ω
. Extended aerial
cables, e.g. for aerials at the rear of the car,
may impair reception.
Figures
p
and
– If necessary, use the aerial adapter (fig.
p
).
– Fix the aerial adapter (fig.
p
) or aerial cable
(fig.
) in the plastic holder.
Fuse
Figure
+
EC 4490 CD
Blade-type fuse T 7.5 A / DIN 72 581– plugged.
EC 4790 CD
Blade-type fuse T 10 A / DIN 72 581– plugged.
Supply voltages
Blade contacts A: Figure
+
A 8
– operating voltage (earth)
Connect to terminal 31 (earth) of the vehicle.
A 7
+12 V operating voltage
Connect to terminal 30 (permanent plus) of
the vehicle.
A 6
Car radio illumination
Connect the blade contact A 6 to terminal 58
of the vehicle.
When the vehicle's headlights are switched
on, the illumination of of the switched off car
radio can be controlled.
Blade contact A 6 not connected:
No illumination when the radio is switched
off.
A 5
+12 V switching voltage output
(max. 0.5 A)
on blade contact A 5 when the radio is
switched on.
For automatic aerial (extend/retract),
aerial amplifier (operating voltage) etc.
A4
12 V ignition voltage
– Connect to terminal 15, if you wish to
switch the car radio on and off with the igni-
tion/start switch.
– Connect to terminal 30. The car radio can-
not be switched on and off with the ignition/
start switch.
If the ignition is switched off, the radio is not
switched off after one hour and the Security
LED does not flash.
66
To ensure a correct operation of the radio,
this contact must always be connected to
terminal 15 or 30.
A 2
Phone mute connection
for car telephone or CB radio.
The car radio is “muted” when the car tele-
phone or CB radio is in operation.
The display indicates ”
PHONE
”, see page 14,
EXPERT setting
8
.
For this, the blade contact A 2 must be
connected from the mute output of the tele-
phone/CB radio to earth!
Loudspeakers
Blade contacts B: Figure
+
Maximum output power
EC 4490 CD With 4
Ω
loudspeakers: 4 x 7 W.
With adapter supplied: 2 x 20 W.
If you wish to connect only two
loudspeakers:
Use the adapter supplied (Fig.
O
) to combine
the four 7 W loudspeaker outputs to two 20 W
outputs. For this, connect the 20 W adapter to
the socket B (Fig.
+
).
Connection of the front speakers (see above)
is not changed but the rear sockets remain
free.
EC 4790 CD With 4
Ω
loudspeakers: 4 x 20 W.
Front speakers
Rear speakers
B 3
right-hand +
B 1
right-hand +
B 4
right-hand –
B 2
right-hand –
B 5
left-hand +
B 7
left-hand +
B 6
left-hand –
B 8
left-hand –
Do not electrically connect speaker
connections to each other and do not
connect to chassis!
Additional connections
Blade contacts C: Figure
+
CD changer and AUX connection
C 13 CD bus control line. For AUX mode,
connect with C15.
C 15 CD bus, earth.
C 16 +12 V supply voltage for CD changer.
C 17 Switching voltage for CD changer.
C 18 CD-AF/AUX-AF, earth.
C 19 CD-AF/AUX-AF, left.
C 20 CD-AF/AUX-AF, right.
Line output
Connection for booster or active speaker.
Appropriate adapter:
Adapter 416 (order No G.ID 16-00).
C
1
1 Rear speaker, left +
C
1
2 Rear speaker, right +
C
1
3 Earth –
C
1
4 Front loudspeaker, left +
C
1
5 Front loudspeaker, right +
C
1
6 Switching voltage for booster on/off
(max. 0.3 A).
The total current consumption resulting
from the connections C 17, C 6 and A 5 is not
allowed to exceed 0.5 A.
Installation and Removal
CD
When the radio is switched off, remove an
ejected CD to prevent injuries by the CD in the
case of sudden braking or accidents.
Fix the radio securely in its mounting facility
to ensure high-quality CD play even in the
case of bad roads.
Radio reception conditions
VHF (FM) reception
Reception conditions change constantly while
you are driving.
Mountains, buildings or bridges can all
disturb reception.
This is particularly true when you are farther
away from the station.
Radio Data System (RDS)
RDS is an information system the signals of
which are broadcast along with the FM radio
station programme.
Programme service
With RDS programmes, you see the abbrevi-
ated name of the programme in the display,
e.g. "
BAYERN 3
" which stands for
Bayerischer Rundfunk – Programme 3.
Please note that RDS programmes can have
different regional stations and programme
names.
Alternative frequencies (AF)
An RDS programme is broadcast by several
stations, each with a different broadcast
frequency (alternative frequencies).
You select an RDS programme and your car
radio will always tune to a station with an
alternative frequency giving best reception of
the same RDS programme.
Enhanced Other Network (EON)
This functions allows you to listen to traffic
announcements even if you have tuned in an
RDS programme without traffic announce-
ments.
Prerequisite:
The radio station that is broadcasting your
selected RDS programme with EON broad-
casts an additional RDS programme which
offers traffic announcements.
Traffic announcement standby
in the case of RDS programmes with EON if
”TP” is activated in the dispaly and the RDS
programme tuned to remains audible.
Switching TP on/off
Press the
¡
TP
button.
TP on: ”TP” in the display is surrounded by a
frame.
If a malfunction should occur
please consult your dealer.
In the Federal Republic of Germany, Grundig
car radios can be exchanged by your dealer
on request for a works-tested exchange unit
in the event of a defect occuring.
Please note:
It is a condition for your dealer to participate
in this exchange system that the guarantee
seal on your car radio is not damaged.
Care and maintenance
The front panel of the car radio must only be
cleaned with a soft, dust-absorbent, anti-static
cloth. Polishing and cleansing agents may
damage the surface of the trimplate.
Important Information
The radio cannot be switched on
– Insert the left-hand
ÄÄ
control knob once
again.
– Press and hold down the
¡
IO
button for at
least 1 second.
– Check the fuse at the back of the radio, see
also Fig. 4 at the beginning of this booklet.
If it is defective, take the radio to your spe-
cialized dealer.
The Security LED does not flash
– Select the EXPERT control level (see page
14).»
BLK ON
«.
– If the security LED does not function, let
check the connections of the radio by a spe-
cialist (see page 19/Connection A4).
Poor reception
Are you in an area of bad reception conditions
(eg., underground car park, tunnel, valley,
etc.)?
In this case, reception will surely improve
when changing the location.
If reception gets nevertheless not better, the
aerial or aerial lead might be damaged. Let
check your radio by a specialist.
Reception is frequently interrupted
Your are in an area of very bad reception con-
ditions. Here it may happen that pauses occur
when the radio tries to change to alternative
frequencies. In this case, the AF function
should be switched off (see page 7).
CD does not play
If no CD is inserted into the CD compartment,
the CD function cannot be selected with the
¡
button. Observe the error messages in
the display.
SURFACE
CD incorrectly inserted or
distorted data transmission.
TOO HOT
CD changer overheated.
CD changer does not play
Note the error messages shown in the display
and read the operating instructions of the CD
changer.
MAGAZINE
CD magazine missing or not
locked in.
MECHANIC
CD changer – mechanical defect.
NO CD
CD magazine empty.
NO COMMU
Data transmission interrupted.
SURFACE
CD incorrectly inserted or
distorted data transmission.
TOO HOT
CD changer overheated.
One loudspeaker is dead
Check the setting of the FADER and BALANCE
controls and correct if necessary. If this
brings no result, let check the loudspeaker
leads and the loudspeakers by a specialist.
Troubleshooting
