Geely CK Series 2007 Workshop Manual page 243

Abnormal: Repair or replace wire harness and connector
Normal: Check and replace radio assembly
11. Sound quality poor only when playing CD (Volume faint)
(1) Replace it with another CD and re-check
Normal: CD failure
Abnormal: Replace the disc box
(2) Replace the disc box
Normal: Box damaged
Abnormal: Check and replace radio assembly
12.CD sound jump
(1) Disc cleaning
If the disc gets dirty, clean the disc by wiping the surface from the center to outside in the radial directions
with a soft cloth.
Notice:
Do not use a conventional record cleaner or anti--static preservative.
Standard: The fault is cleared.
Normal: The disc is dirty
Abnormal: Replace it with another CD and re-check.
(2) Replace it with another CD and re-check.
Standard: The fault is cleared.
Normal: CD failure
Abnormal: Check when it will happen
(3) Check when it will happen
Check where sound jump will happen
Standard: Drive on bumpy road
Normal: Replace CD box
Abnormal: Compare with other vehicles of the same model
(4) Compare with other vehicles of the same model
Compare with other vehicles of the same model of no fault. Check for any difference when faulty
occurs.
Standard: No difference is found.
Normal: Make sure there is no difference
Abnormal: Check CD box installation
(5) Check CD box installation
Check CD box installation
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