Label side up 
Do not touch the underside of the disc
Do not bend
Wipe the disc from center toward the outside edge
Preparing New Discs with Rough Spots A new disc may have rough edges on its inside and outside edges. If a disc with rough edges is used, the proper setting will not be performed and the player will not play the disc. Therefore, remove the rough edges in advance by using a ballpoint pen or pencil as shown on the right. To remove the rough edges, press the side of the pen or pencil against the inside and outside edges of the disc.
Rough spots on
outside edge
Ball point pen or pencil
Rough spots on inside edge
Installation
Notes:
-Choose the mounting location where the unit will not distract the driver.
-Before the installing of the unit, connect the wiring temporarily and make sure it is all connected up properly and the unit and the system works.
-Use only the parts included with the unit to ensure proper installation. The use of unauthorized parts can cause malfunctions.
-Consult with your nearest dealer if installation requires the drilling of holes or other modifications of the vehicle.
-Install the unit where it does not get in the driver's way and cannot injure the passenger if there is a sudden stop, like an emergency stop.
-If installation angel exceeds 30°from horizontal, the unit may not perform properly.
-Avoid installing the unit where it will be subject to high temperature, such as from direct sunlight, or from hot air, from the heater, or where it would be subject to dust, dirt or excessive vibration.
User ’s Manual - page 3