Sony XM-S400D Page 3 Service Manual Download

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XM-S400D

SECTION 2

GENERAL

This section is extracted
from instruction manual.

The unit will not come into contact with a
driver/passengers or materials in your car since
the unit becomes hot during use.

Do not install the unit under the floor carpet,
where the heat dissipation from the unit will be
considerably impaired.

Mounting the unit

Prepare a mounting board that is thicker than 20
mm (

in) since the supplied mounting screws

are all 20 mm (

in) long. The unit can also be

mounted on the flat surface of your car without a
mounting board.

Insert the supplied mounting brackets

into the slits of the unit and secure them
with the supplied bracket screws

Place the unit on the mounting board
and mark the two screw hole positions.

Drill a 3 mm (

in) pilot hole at each

mark on the mounting board.

Installation

Mount the unit on a flat surface.

Mount the unit where

The unit will not interfere with the normal
movements of the driver.

The unit will not be exposed to direct sunlight
or hot air from the heater.

Connect the +12 V power supply wire only after all
the other wires have been connected and the
settings on this unit have been made.

Be sure to connect the ground (earth) wire of the
unit securely to a metal point of the car. A loose
connection may cause a malfunction of the
amplifier.

Be sure to connect the remote control wire of the
car audio unit to the remote input (REM) wire of
the supplied power connection cable.

When using a car audio unit without a remote
output for the amplifier, connect the remote input
(REM) wire of the supplied power connection
cable to the accessory power supply.

Use a power supply wire with a fuse (15 A)
attached.

All power wires connected to the positive battery
post should be fused within 450 mm (17

in) of

the battery post, and before they pass through
any metal.

Make sure that the car’s battery wires connected
to the car (ground (earth) to chassis) are of a wire
gauge at least equal to that of the main power
wire connected from the battery to the amplifier.

During full-power operation, a current of more
than 15 A will run through the system. Therefore,
make sure that the wires to be connected to the
+12 V and GND wires of this unit are at least 14-
Gauge (AWG-14) or have a sectional area of more
than 2 mm² (

in²).

Power Connections

Place the unit on the mounting board
and secure it with the supplied mounting
screws

Connections

Before making any connections, disconnect the
ground (earth) terminal of the car battery to avoid
short circuits.

If your car is equipped with a computer system for
navigation or some other purpose, disconnecting
the ground (earth) wire from the car battery may
damage the computer memory. Leaving the
ground (earth) wire connected and disconnecting
the +12 V power supply wire until all the other
wires have been connected may prevent short
circuits.

Be sure to use speakers with an adequate power
rating. If you use small capacity speakers, they
may be damaged.

Do not connect the

terminal of the speaker

system to the car chassis, and do not connect the

terminal of the right speaker with that of the

left speaker.

Install the input and output cords away from the
power supply wire. Running them close together
may generate interference noise.

Set the INPUT SELECT switch to “2CH” or “4CH”
according to the input connection.
Also, refer to the manual supplied with your car
audio unit for further details.

Line input connection

Set the INPUT SELECT switch to “4CH” with the
speaker connection

(page 9).

Line input connection

Set the INPUT SELECT switch to “2CH” with the
speaker connection

(page 9).

Input Connections

Car audio

Making power connections

Connect the supplied power connection cable to
the POWER/OUTPUT connector on the unit.

*1 Ground (earth) to chassis.
*2 If you have the factory original or some other car

audio unit without a remote output for the amplifier,
connect the remote input (REM) wire of the supplied
power connection cable to the accessory power
supply. With the high level input connection, the car
audio unit can also be activated without need for a
REMOTE connection. However, this function is not
guaranteed for all car audio units.

to a metal point of the car

less than 450 mm (17

in)

Fuse (15 A)

+12 V car battery

Car audio

High level input connection

Set the INPUT SELECT switch to “4CH” with the
speaker connection

(page 9).

Gray

Gray/Striped

Front right speaker output