
2
Prohibited
Indicates a prohibited action (must not be
performed).
Prohibited
Indicates that disassembly is prohibited.
Mandatory
Indicates a mandatory operation (must be
performed).
Indicates that it should draw your close
attention.
In case of problems, please stop using
the device immediately.
Continued use may result in personal injury or damage to
the product. Please return the product to the authorised
Alpine dealer ornearby Alpine service center for repair.
The product isonly suitable for 12V
negative-grounded vehicles.
Use within other types of vehicles may create a fire or
electrical hazard.
Please contact a professional for wiring
and installation
This product requires professional expertise to wire
and install. Please contact the dealer from whom you
bought the product to install it safely.
Please do not disassemble or refit.
Doing so may result inproduct damage, fire or
electrical hazard.
Small items like bolts or screws must
be kept out of the reach of children.
If ingested, please seek Immediate medical
attention to avoid serious injury.
Any device function that may influence your attention
must be used only when the vehicle is stopped
completely. To use these functions, make sure to stop
your vehicle in a safe area first. Otherwise, it may result
While driving, you must maintain
the volume at a level that allows
outside noise to remain audible.
It is very dangerous not tohear an emergency vehicle
alarm or road warning signal (such as a railway
crossing) and may result in an accident. Moreover,
excessively loud volume may create permanent hearing
damage or hearing loss.
Product maintainance
Please regularly clean the item with a soft, dry cloth.
For tough stains, use only water to dampen the cloth as
other solvents may result in dissolution.
Temperature
Before starting the device, please ensure that the
temperature inside the vehicle is between +60°C and -
Repair
In the case of a problem, please do not attempt to repair
the product yourself. Please return the product to the
authorised Alpine dealer or Alpine service center.
System matching
When PXE-640E-EL is used with active division mode to
assign signals for speakers, please ensure that
the crossover frequency is above 1500 Hz to avoid
damage to tweeters.
Installation environment
The device cannot be installed at the following locations:
•Under direct sunlight or near a hot source.
•With high humidity or near a water source.
•Dusty environments.
•Environments with violent vibration.
The text mark and logo of Bluetooth® are the registered trademarks held by Bluetooth SIG, Inc. Alpine Electronics has
been authorised to use these text marks and logos. Other trademarks and names all belong to their holders.
* Electronic products should be discarded via an appropriate recycling channel to reduce electronic waste pollution.
Operating Instructions
Type ofPrecautions
Please do NOT use functions that
may distract you while driving.
Operation Instructions
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