Yamakawa MP-28 - Manual (Page 6)

3
Precautions
Be sure the temperature inside the vehicle is between +55° C(+131° F)
and -5°C(+23°F) before turning your unit on.
Temperature
You may notice the CD playback sound wavering due to condensation.
If this happens remove the disc from the player and wait an hour for
the moisture to evaporate.
Moisture condensation
Do not attempt to play cracked, warped, or damaged discs. Playing
a bad disc could severely damage the playback mechanism.
Damaged disc
If you have problems, do not attempt to repair the unit yourself. Consult a
professional mobile video installer.
Maintenance
Do not grip or pull out the disc while it is being pulled back into the player
by the automatic reloading mechanism.
Do not attempt to insert a disc into the unit when the unit power is off.
Never attempt the following
Your player accepts only one disc at a time for playback. Do not attempt
to load more than one disc.
Make sure the label side is facing up when you insert the disc.
Playing a disc while driving on a very bumpy road may result in skips.
Inserting discs
Make sure the discs you use in this unit do not have any irregularities.
The outer and inner edges should be round and smooth. Use of irregularly
shaped discs may cause damage to the mechanism.
Irregular shaped discs
Make sure the unit will not be installed in a location subjected to:
Direct sun and heat
High humidity and water
Excessive dust
Excessive vibrations
Installation location