Troubleshooting - MAC Audio MAC 620 Mode D'emploi

trouBleshooting

Problem
generAl
Unit will not power on
No/low audio output
Poor sound quality or
distortion
Unit resets itself when
engine is off
tft Monitor
No image
Flashing image or
interference appears on
screen
tuner
Weak station searching
DisC
Cannot insert disc
Cause
Radio Fuse blown.
Car battery fuse blown.
Illegal operation.
Improper audio output connection.
Volume set too low.
Speakers damaged.
Heavily biased volume balance.
Speaker wiring is in contact with
metal part of car.
Pirated disc is in use.
Speaker power rating not compatible
with unit.
Speaker is shorted.
Incorrect connection between ACC
and positive battery wire.
Incorrect connection to parking brake
wire.
Parking brake is not engaged.
DVD is not compatible with current TV
system settings.
Improper video signal connections.
Auto antenna is not fully extended.
Auto antenna not properly connected.
LOCAL function is activated.
Disc already inside unit.
Corrective Action
Install a new fuse with the
correct rating.
Install a new fuse with the
correct rating.
Press the RESET button
located over the rotary
encoder on the front panel.
Check wiring and correct.
Increase volume level.
Replace speakers.
Adjust the channel balance
to the center position.
Insulate all speaker wiring
connections.
Use original copy.
Connect proper speakers.
Check speaker contact.
Check wiring and correct.
Check wiring and correct..
Stop vehicle in safe place
and apply parking brake.
Change setup to
accommodate disc.
Check wiring and correct.
Connect the auto antenna
control cable properly.
Connect the auto antenna
control cable properly.
Turn LOCAL function off.
Eject current disc and insert
new one.
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