Akai ACR-21MP, Service Manual

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Troubleshooting
If you suspect something is wrong, immediately switch power off. Immediately stop using it and call the store where you purchased it.
Never try to repair the unit yourself because it is dangerous to do so.
When a disc beco mes dirty clean it with a c leaning cloth.
Wipe the disc from the c enter out.
After prolonged use, dir t or dust may accumulate at the lens. To ens ure go od playback quality, clea n the disc wit h Philips CD lens
Cleaner or any commercially available cleaner. Follow the in structions supplied with cleaner.
To ensure good playbac k quality, clean the heads A ,the caps tan B ,
and pressure roller C after every 50 hours of tape operation. Used
a cot ton sw ab slightly m oistened wit h cleaning fluid or alcohol.
You can also clea n the heads by playing a cleaning tape once.
Clearing d isc
Cleaning t he disc lens
Cleaning t he heads an d the Tape Parts
Maintenance
MAINTENANCE AND TROUBLESHOOTING
General Radio
Disc
Station is too far, or signals are too weak.
Select other stations of higher signal level.
Much noise in
broadcasts
Preset station
lost
Battery cable is not correctly connected.
Connect the battery cable to the
terminal that is always live.
Error Display Messages
Disc is not CD or contains no MP3 files.
Disc upside down.
Recovery error, check the disc.
MP3 error, check the disc.
Disc is upside down.
Disc is dirty or damaged
Place disc in the correct direction,
and the label side up.
Clean disc or change another disc.
Disc is but
no sound.
inserted
Disc sound skips,
tone quality is low.
Disc is dirty or damaged.
Clean CD or change another CD.
Mounting angle is over 30
o
.
Adjust mounting angle to less than 30 .
o
Unstable mounting .
Mount the unit securely with the
mounting parts.
Sound skips due
to vibration.
Disc mechanism error
：
Press button to eject the disc.
In case that the disc cannot be
ejected by pressing
button,
press the RESET switch and press
the
button again.
If still not ejecting consult your
dealer.
No power or
no sound
Car's engine switch is not on.
Cable is not correctly connected.
Fuse is burnt.
Turn your car s key to ACC or ON.
Check connection.
Replace fuse.
Check volume or mute on / off.
press the RESET button.
If the above solutions cannot help,
EJ
EJ
EJ