Connections And Functions - Alpine HDP-D90 Owner's Manual

Connections and Functions

①②③④⑤ Pre-Out jacks
5 groups of RCA audio signal output, which
can be connected to an external power
amplifier.
⑥ RCA Audio Input jacks
1 groups of RCA audio signal input, which
can be connected to the RCA audio signal
output of car audio player.
⑦ High Level Input Connector
Connect to the high-level output of the car
audio player.
⑧ Coaxial Input jack
Connect the car audio coaxial cable, switch
the audio source of the machine to the
digital signal input, and play the coaxial
digital signal.
⑨ Optical Input jack
Connect the car audio optical fiber cable,
switch the audio source of the machine to
the digital signal input, and play the optical
digital signal.
⑩ Controller Connector (Sold separately)
System expansion interface.
⑪ USB 2.0 connector
It can be connected to a computer via a USB
2.0 cable for detailed tuning operations and
settings.
To prevent external noise from entering the audio system.
The installation position of the machine and the wiring arrangement should be at least 10cm

away from the automobile wiring harness.
Try to keep the battery power cord away from other wires.

Securely connect the ground wire to the bare metal contacts of the car chassis (remove any

paint, dirt or grease if necessary).
If you want to attach an optional noise suppressor, please try to keep it away from the

machine when connecting. Your Alpine dealer has various types of noise suppressors, please
contact them for details.
Your Alpine dealer is proficient in noise prevention methods, please consult your dealer for

details.
⑫ External Bluetooth connector
Choose high-definition Bluetooth as the
input signal, or connect HDP-D90 mobile
phone tuning software. After the connection
is successful, the Bluetooth is always on.
⑬ Power Supply Terminal
Connect the car battery.
⑭ Fuse
Insert two 30A fuses.
⑮ Input Select Switch
When the switch is pulled to the "ACC"
terminal, ACC starts the machine; when it is
pulled to the "HOST" terminal, the machine
is started by the high level input signal
H1-/H1+.
⑯⑰ CH1-4 Speaker Output Terminals
The amplifier output of the machine is
connected to the speaker.
⑱⑲ CH5-8 Speaker Output Terminals
The amplifier output of the machine is
connected to the speaker.
⑳㉑ CH9-12 Speaker Output Terminals
The amplifier output of the machine is
connected to the speaker.
㉒ External Power Amplifier (Sold separately)
Connect an external power amplifier.
㉓ Car Audio Player (Sold separately)
Connect the car audio player.
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