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English
— 18 —
Troubleshooting Guide
What might seem to be a malfunction in your unit may
just be the result of slight misoperation or miswiring.
Before calling service, first check the following table for
possible problems.
General
?
The power does not turn ON.
01
✔
The fuse has blown.
☞
After checking for short circuits in the wires, replace the fuse with
one with the same rating.
✔
No ACC position on vehicle ignition.
02
☞
Connect the same wire to the ignition as the battery wire.
?
Nothing happens when the buttons are pressed.
04
✔
The computer chip in the unit is not functioning normally.
☞
Press the Reset button on the display unit (page 3).
?
No sound or sound is low.
52
✔
The radio volume is sets to the minimum level.
3
☞
Turn the radio volume up.
✔
The input/output wire or wiring harness is connected incorrectly.
55
☞
Connect the input/output wire or wiring harness correctly. See
"Connecting Wires to Terminals" (Page 17).
?
Sound distortion.
67
✔
The signal levels differ depending on sources.
☞
Change the Modulation level / Dynamic control setting. (Page 11)
?
Nothing appears on the display.
04
✔
The control output of the display unit is not connected properly.
☞
Connect the control output properly.
Disc source
?
CD play does not start.
52
✔
CD auto-changer input is not connected to the unit.
☞
Connect the CD auto-changer input to the unit.
✔
Power button is not turned ON.
53
☞
Turn the power button ON.
?
The specified disc does not play, but another one plays instead.
52
✔
The specified CD is quite dirty.
☞
Clean the CD.
✔
The CD is upside-down.
53
☞
Load the CD with the labeled side up.
✔
The disc is loaded in a different slot from that specified.
54
☞
Eject the disc magazine and check the number for the specified disc.
✔
The disc is severely scratched.
55
☞
Try another disc instead.
?
The specified track will not play.
58
✔
Random play or magazine random play has been selected.
☞
Turn off random play or magazine random play.
?
Cannot play CD-R or CD-RW.
60
✔
Finalization processing is not being conducted for CD-R/CD-RW.
☞
Conduct finalization processing with CD recorder.
?
Direct Track Search and Direct Disc Search can’t be done.
66-1
✔
Another function is ON.
☞
Turn Random Play or other functions OFF.
?
Track Search can't be done.
66-2
✔
For the discs first or last song.
☞
For each disc, Track Search can't be done in the backward direction
for the first song or in the forward direction for the last song.
KDC-C521FM(M)_U.S 2004.03.05 08:37 AM Page 18
