Connections Connection Diagram; Reset Button - Sony CDX-C780 Installation/Connections

Connections
Caution
•This unit is designed for negative ground 12 V DC operation only.
•Before making connections, disconnect the ground terminal of the car battery to avoid short circuits.
•Connect the yellow and red power input leads only after all other leads have been connected.
•Be sure to connect the red power input lead to the positive 12 V power terminal which is energized when
the ignition key is in the accessory position.
•Run all ground wires to a common ground point.
•Connect the yellow cord to a free car circuit rated higher than the unit's fuse rating. If you connect this
unit in series with other stereo components, the car circuit they are connected to must be rated higher
than the sum of the individual component's fuse rating. If there are no car circuits rated as high as the
unit's fuse rating, connect the unit directly to the battery. If no car circuits are available for connecting
this unit, connect the unit to a car circuit rated higher than the unit's fuse rating in such a way that if the
unit blows its fuse, no other circuits will be cut off.
•The use of optical instruments with this product will increase eye hazard.
If your car has no accessory position on the ignition key switch
— POWER SELECT switch
The illumination on the front panel is factory-set to be turned on even when the unit is not being played.
However, this setting may cause some car battery wear if your car has no accessory position on the
ignition key switch. To avoid this battery wear, set the POWER SELECT switch located on the bottom
of the unit to the B position, then press the reset button. The illumination is reset to stay off while the
unit is not being played.
Notes
• The caution alarm for the front panel is not activated when the POWER SELECT switch is set to the B position.
• Do not use excessive force when changing the POWER SELECT switch.
When a digital pre-amplifier etc. is connected
Set the LINE-OUT/IN SELECT switch, which is on the underside of the unit, to position 2, so that the
LINE-OUT/IN terminal will function as LINE-IN terminal.
With the switch in position 1, the terminal will work as LINE-OUT terminal.
Notes
When you change the position of the switch, be sure to press the reset button after the connections are completed.

Reset button

When the installation and connections are over, be sure to press the reset button with a ball-point pen etc.
Inverter
•Install the inverter far away from the unit using double-sided adhesive tape or something similar.
•Be sure not to mount the inverter under a mat or in a place exposed to splashing water of air conditioner.
It may cause electric shock or damage to the unit.
Note
If the inverter's cord is pinched, the display indications may not appear.
Equipment used in illustrations (not supplied)
For connecting two or more changers, the source selector
XA-C30 (optional) is necessary.
Front speakers
CD/MD changer
— LINE-OUT/IN SELECT switch
Rear speakers
Power amplifier
TV monitor
Active subwoofer
Connection diagram
A
Set the LINE-OUT/IN SELECT switch to position 2
EQ OUT
BUS
CONTROL IN
Digital pre-amplifier
XDP-U50D
For details about the connection, refer to the operating instructions of XDP-U50D (not supplied).
B
Set the LINE-OUT/IN SELECT switch to position 1
BUS
AUDIO IN
BUS LINE OUT
FRONT
CONTROL IN
C
Set the LINE-OUT/IN SELECT switch to position 1
Digital pre-amplifier
BUS CONTROL IN
For details about the connection, refer to the operating instructions of XDP-U50D (not supplied).
D
TV tuner unit
Source selector
LINE IN
LINE IN
FRONT REAR
SUB
SUB OUT
LINE OUT
REAR
XDP-U50D
LINE OUT REAR
BUS AUDIO IN
BUS CONTROL IN