This is the 32 pages manual for Alpine MRA D550 Service Manual.
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DIGITAL THEATER AMPLIFIER
'9-¯ am I'NET
The following cautions will prevent accidents in the workplace and will ensure safe products.
*The symbols indicate caution is needed to prevent injuries and damage to property.
The symbols and their meanings follow.
warning serious injury or death may result.
if you ignore this symbol and handle the product incorrectly or unsafely,
if you ignore this symbol and handle the product incorrectly or unsafely.
injury or only material damage may result.
*The following symbols indicate two levels of cautions.
A When you see this symbol, you have to be very careful.
0 When you see this symbol, you have to follow the instructions there.
Do not look squarely into the laser light
coming from the pickup.
You may loose you sight.
Always use a designated fuse.
Use of an incorrect fuse may result in a fire.
Do not allow wiring to be caught in the
If wiring is caught in the screw/chassis. it may
cause a short circuit, resulting in a fire.
Use the designated battery.
Confirm the correct polarity and seat of the
An incorrect battery or an improperly connected
or seated battery may result in a fire.
High Temperature Caution
Touching the heat sink may cause severe burns.
Designated Parts Caution
Look up the part list and ensure that only
designated parts are used to prevent problems or
Reverse Power Supply Connections or
Fteverse power supply connections or
misconnections may cause ignition problems and
smoke may result.
Ensure that the wiring is correct when rewiring to
prevent problems with ignition/breakdown.
Hot solder from solder splash may cause severe
Wear gloves to prevent electrical shocks or injury
from the end face of the metal.