Chery QQ - Automatic Music Scan System; Audio System Maintenance

Chery QQ Service Manual BCM Computer Control System
setting mode
6 MUTE
7 Volume
8 Power switch
9 Display
10 BAND SCAN: Radio frequency scanning/CD player song scanning
◄ ►: High-end and low-end scanning (playing) Previous/next song (CD cassette)
Automatic music scan system
11 AST: automatic saving system
12. Preset key 6 DISC-: Choose forward discs 13. Preset key 5
14 Preset key 4 DISC+: Choose backward discs
15 Fast Forward ►►
16 Rewind
17 Reject ▲ Press for a short time to reverse the cassette Press for a long time to
reject the cassette
18 Cassette compartment
Note: VDO CD player is optional. See supplied manuals for the information on use and
maintenance of VDO CD players.
III. Audio system maintenance
1. Before the radio maintenance, shut off the ignition switch and disconnect the battery
negative wire.
2. Common problems and troubleshooting
Symptom Possible Cause Solution
Fuse broken
Replace it with another fuse of
the same type
The main processor fails
to be turned on
Wrong wiring
Check the wiring against the
wiring diagram
Speakers and wires Check connections and speakersThe main processor
works but without sound
output
Main processor out
of order
Consult a professional radio
technician
External signal
antenna
Check the connection between
the antenna and main processor or
amplifier power.
Poor sound quality of the
main processor, with
interference
Dirty magnetic
tapes and heads
Clean magnetic heads
Tapes damaged Replace the broken cassettes
Cassettes blocked
Main processor
failure
Consult a professional radio
technician
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