3308695 - N33 THE COMPACT DISC. PLAYER IS NOT WORKING ON THE I.C.S 'AUDIO SYSTEM()

In the audio environment, you can tune and memorize the radio stations, the volume knob does not adjust and the Compact Disc functions cannot be set (music cannot be heard when the CD button is pressed)
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Check that the discs are positioned correctly in the changer Continue to Step 1 Discs positioned incorrectlyRestore correct operation
1CHECK CD PLAYER SUPPLYAll OKProblems metOperation
Check the supply to the connector of the CD player ( See   E4090  NAVIGATOR ) Continue to Step 2 Faulty earthRestore connections
Faulty earthReplace the fuse and search for the cause of the problem
Faulty earthRepair the earth
2CHECK CD PLAYERAll OKProblems metOperation
Check that the disc changer on the CD player ejects properly Continue to Step 3 Disc changer faulty Replace the CD player Op. 5080M32
3CHECK OPERATION OF CD PLAYERAll OKProblems metOperation
Check the audio efficiency (disconnecting the CD player) using the Compact Cassette available on I.C.S. Continue to Step 4 CD player not working Replace the CD player Op. 5080M32
4CHECK AUDIO OPERATIONAll OKProblems metOperation
Check audio operation with the Compact Cassette systems available on I.C.S. Continue to Step 5 I.C.S. audio device not working Replace the I.C.S. system Op. 5080M12
5HECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'