SAMSUNG SC-7400 Service Manual
2-1
2. Reference
Samsung Electronics
Precautions :
ôô
Be careful not to touch the rear
side panel of the unit when
removing the unit from the
installation sleeve, since it may
be hot. On this side the cooling
ribs are located.
ôô
The unit is designed to operate
only on 12 volt DC negative
ground electrical system.
ôô
When you replace the fuse, be
sure to use a fuse of specified
amperage for each wire as
mentioned in chapter
“Connections”. Using a fuse of
higher amperage may cause
serious damage to the unit.
Reset Button
In the event of abnormal
operation, press down on the
RESET button, located behind
the Front Panel, for 2 seconds
or more, with a pencil tip (or
other nonmetallic object).
Pressing the RESET button will
erase all control settings.
Mounting the unit
Notes :
ôô
Use only the parts included
with the unit to ensure proper
installation. The use of
unauthorized arts can cause
malfunctions.
ôô
Consult with your nearest car
audio dealer if installation
requires the drilling of holes or
other modifications of the
vehicle.
ôô
Do not use the front panel as a
way of gripping the unit
during installation and wiring.
The front panel may come
away and the unit may drop on
the floor.
Installations
ôô
Periodically wipe the
contacts on the back of the
front panel with a cotton swap
moistened with alcohol.
When removing the unit
from the installation
sleeve
If you need to remove the unit
from the installation sleeve,
proceed as follows.
Œ
Remove the rear supporter
from the unit.
´
Remove the front panel from
the unit.
ˇ
Insert the lever into hole on
one side of the unit, and pull
the lever toward you. Do the
same operation on the other
side and pull out the unit from
the installation sleeve.
A
Dashboard
Installation
sleeve
A
A
1
Bend the claws
according to the
thickness of the
dashboard.
2
Reset Button
2-2 Samsung Electronics
Precautions
ôô
Do not bring the connecting
cords near parts whose
temperature will rise when the
vehicle is driven.
ôô
Secure the connectors
securely so that they are
locked into position.
Improper connection can result
in noise or hamper operation.
This car receiver is not designed
to utilize the vehicle’s chassis as
the electrical return path from the
speaker to the radio. Always use
two conductor wire between each
speaker and your stereo unit.
4-Speakers
connection
Use 4-8 Ohm impedance
speakers. Refer to the following
connections diagram.
Note:
Do not change polarity of spk
connector.
Connections
Œ
Main connector
Connect the main connector to
the female connector on the back
of the unit.
´
Antenna Connection
Insert the plug of the car antenna
cable into the jack at the rear of
the unit.
ˇ
Memory Back-up Lead
(Orange)
Connect the orange memory
power supply wire to a 12V+
terminal that is always supplied
with power regardless of the
vehicle’s ignitions switch position.
If this connection is made
incorrectly or is not made at all,
the unit will not work.
¨
Ground
Connection (Black)
ôô
Connect the ground lead
(black) th a metal part of the
vehicle and secure it using the
screw provided on the vehicle
for this purpose.
ôô
If this connection is loose, or if
the cord is connected to
something other than a metal
part of the car, noise or
malfunction may result.
ˆ
Power Supply Lead (Red)
Connect the red power supply
wire to 12V+ terminal controlled
by the car ignition switch.
Ø
Power Antenna
Lead/External
Amplifier Remote
Turn-on Lead (Yellow)
Your will find a separate lead,
Yellow with a male terminal
suitable to many automatic
antenna. This lead is not to be
used with non-automatic antenna.
If an automatic car antenna is
used, when connecting the lead,
the antenna will be automatically
extened when the main switch is
turned on. This can also be used
as a remote turn-on wire
connection for amplifiers that
have a remote sensing lead.
Using this connection will allow
simultaneous turning on/off of the
radio and an external amplifier.
YELLOW
ORANGE
FRONT
RIGHT
REAR
RIGHT
REAR
LEFT
FR +
BLUE
RR +
GRAY
RL +
WHITE
FL +
GREEN
FRONT
LEFT
FR -
BLUE/BLACK
RR -
GRAY/BLACK
RL -
WHITE/BLACK
FL -
GREEN/BLACK
Filter Box
In-line Fuse
(10-amp)
Power Antenna
2
6
1
BLACK
3
RED
4
5
Antenna Signal
Antenna Jack
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