CD Changer: Testing and Inspection

CD Changer inoperative:
1. The CD changer receives its power and ground through the radio via the DIN cable. Verify that the radio powers up and functions before proceeding.
2. With the radio turned ON, check the radio display when pushing the MODE/EJECT button to select the CD mode.
a. If the display shows, then insert a CD magazine in the changer.
b. If the display shows no cd, then insert a CD into the magazine and reinsert magazine into CD changer.

Din Cable Pin-outs:

c. If the display shows Err xxxx, then check the Error Message table below.
d. If the radio only switches between AM and FM modes, then perform the following:

DIN Cable Connector:

(1). Check the connection of the DIN cable to the CD changer and radio.
(2). If OK, then check the DIN cable at the CD changer side.
(3). Make sure the DIN cable is connected to the radio and radio is turned ON and operating properly. Cheek for battery voltage at Pins 6 and 7 using Pin 8 for ground.
(4). If OK, then replace CD changer.
(5). If not OK, then remove DIN cable from radio and changer. Check DIN cable for continuity from connector to connector, using a ohmmeter on each Pin. Be careful not to bend connector pins.
(6). If the DIN cable OK, then replace the radio.