Test I: The Audio Unit Does Not Display CD Changer Information
PINPOINT TEST I: THE AUDIO UNIT DOES NOT DISPLAY CD CHANGER INFORMATIONI1-I4:
Normal Operation
Circuit 956 (OG/LG) is a constant battery B+ supply to the CD changer. Circuit 694 (BK/LG) is the CD changer ground circuit. Circuit 856 (VT) and circuit 833 (TN) are the audio control protocol (ACP) communication network circuits between the audio unit, CD changer, and the audio control protocol (ACP) module. Circuit 1068 (LG/BK) is the power on signal from the audio unit to the CD changer.
Possible Causes
- CD changer