Read Sony CDX-GT255 Service Manual online
6
CDX-GT255
• CONNECTIONS
BUS
AUDIO
IN
L
R
Connection diagram
1
To a metal surface of the car
First connect the black earth lead, then connect the orange/
white stripped, yellow, and red power input leads.
white stripped, yellow, and red power input leads.
2
To the power aerial control lead or power
supply lead of aerial booster amplifi er
supply lead of aerial booster amplifi er
Notes
•
•
It is not necessary to connect this lead if there is no power
aerial or aerial booster, or with a manually-operated
telescopic aerial.
aerial or aerial booster, or with a manually-operated
telescopic aerial.
•
When your car has a built-in FM/MW/SW aerial in the rear/
side glass, see “Notes on the control and power supply
leads.”
side glass, see “Notes on the control and power supply
leads.”
3
To AMP REMOTE IN of an optional power
amplifi er
amplifi er
This connection is only for amplifi ers. Connecting any other
system may damage the unit.
system may damage the unit.
4
To the +12 V power terminal which is
energized in the accessory position of the
ignition key switch
energized in the accessory position of the
ignition key switch
Notes
•
•
If there is no accessory position, connect to the +12 V
power (battery) terminal which is energized at all times.
Be sure to connect the black earth lead to a metal surface
of the car fi rst.
power (battery) terminal which is energized at all times.
Be sure to connect the black earth lead to a metal surface
of the car fi rst.
•
When your car has a built-in FM/MW/SW aerial in the rear/
side glass, see “Notes on the control and power supply
leads.”
side glass, see “Notes on the control and power supply
leads.”
5
To the +12 V power terminal which is
energized at all times
energized at all times
Be sure to connect the black earth lead to a metal surface
of the car fi rst.
of the car fi rst.
*
1
RCA pin cord (not supplied)
*
2
AUDIO OUT can be switched SUB or
REAR. For details, see the Operating
Instructions.
Instructions.
Notes on the control and power supply leads
•
•
The power aerial control lead (blue) supplies +12 V DC when
you turn on the tuner.
you turn on the tuner.
•
When your car has built-in FM/MW/SW aerial in the rear/side
glass, connect the power aerial control lead (blue) or the
accessory power input lead (red) to the power terminal of the
existing aerial booster. For details, consult your dealer.
glass, connect the power aerial control lead (blue) or the
accessory power input lead (red) to the power terminal of the
existing aerial booster. For details, consult your dealer.
•
A power aerial without a relay box cannot be used with this
unit.
unit.
Memory hold connection
When the yellow power input lead is connected, power will
always be supplied to the memory circuit even when the ignition
switch is turned off.
When the yellow power input lead is connected, power will
always be supplied to the memory circuit even when the ignition
switch is turned off.
Notes on speaker connection
•
•
Before connecting the speakers, turn the unit off.
•
Use speakers with an impedance of 4 to 8 ohms, and with
adequate power handling capacities to avoid its damage.
adequate power handling capacities to avoid its damage.
•
Do not connect the speaker terminals to the car chassis, or
connect the terminals of the right speakers with those of the
left speaker.
connect the terminals of the right speakers with those of the
left speaker.
•
Do not connect the earth lead of this unit to the negative (–)
terminal of the speaker.
terminal of the speaker.
•
Do not attempt to connect the speakers in parallel.
•
Connect only passive speakers. Connecting active speakers
(with built-in amplifi ers) to the speaker terminals may damage
the unit.
(with built-in amplifi ers) to the speaker terminals may damage
the unit.
•
To avoid a malfunction, do not use the built-in speaker leads
installed in your car if the unit shares a common negative (–)
lead for the right and left speakers.
installed in your car if the unit shares a common negative (–)
lead for the right and left speakers.
•
Do not connect the unit’s speaker leads to each other.
Note on connection
If speaker and amplifi er are not connected correctly, “FAILURE”
appears in the display. In this case, make sure the speaker and
amplifi er are connected correctly.
If speaker and amplifi er are not connected correctly, “FAILURE”
appears in the display. In this case, make sure the speaker and
amplifi er are connected correctly.
AMP REM
Max. supply current 0.3 A
Fuse (10 A)
Blue/white striped
Left
Right
Left
Right
ANT REM
Max. supply current 0.1 A
*
1
from car aerial
White
White/black striped
Grey
Grey/black striped
Green
Green/black striped
Purple
Purple/black striped
Black
Blue
Red
Yellow
2
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