SECTION : 9F
AUDIO SYSTEMS
CAUTION : Disconnect the negative battery cable before removing or installing any electrical unit or when a tool
or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help
prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless otherwise noted.
TABLE OF CONTENTS
SPECIFICATIONS9F–1 . . . . . . . . . . . . . . . . . . . . . . . . . .
Fastener Tightening Specifications 9F–1. . . . . . . . . . .
SCHEMATIC AND ROUTING DIAGRAMS9F–2 . . . . .
Audio System Circuit 9F–2. . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSIS9F–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stereo Cassette AM/FM Radio 9F–3. . . . . . . . . . . . . .
Speakers 9F–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE AND REPAIR9F–7 . . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 9F–7. . . . . . . . . . . . . . . . . . . . .
Stereo Cassette AM/FM Radio 9F–7. . . . . . . . . . . . . .
Audio Remote Controller 9F–7. . . . . . . . . . . . . . . . . . . . Notchback CD Changer 9F–8. . . . . . . . . . . . . . . . . . . .
Door Speakers 9F–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tweeter Speakers 9F–9. . . . . . . . . . . . . . . . . . . . . . . . .
Glass Antenna Module 9F–9. . . . . . . . . . . . . . . . . . . . .
Hatchback Windshield Antenna Module 9F–10. . . . . .
GENERAL DESCRIPTION AND SYSTEM
OPERATION9F–11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stereo Cassette AM/FM Radio 9F–11. . . . . . . . . . . . . .
Audio Scurity System 9F–11. . . . . . . . . . . . . . . . . . . . . .
Speakers 9F–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tape Player and Cassette Care 9F–11. . . . . . . . . . . . . .
Compact Disc Care 9F–11. . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONS
ApplicationNSmLb–FtLb–In
Door Speaker Screws2–18
Rear Speaker Screws2–18
Glass Antenna Screws2–18
AUDIO SYSTEMS 9F – 5
DAEWOO V–121 BL4
FM Radio Does Not Work, AM and Cassette OK
StepActionValue(s)YesNo
11. Unplug the antenna cable from the antenna.
2. Connect the test antenna to the antenna cable.
3. Check the FM radio reception.
Is the FM radio operating properly?–Go to Step 2Go to Step 3
2Replace the antenna.
Is the repair complete?–System OK–
31. Remove the cassette radio from the instrument
panel.
2. Unplug the antenna cable from the audio sys-
tem.
3. Plug the test cable into the audio system.
4. Check the FM radio reception.
Is the FM radio operating properly?–Go to Step 4Go to Step 5
4Replace the antenna cable between the audio sys-
tem and the antenna.
Is the repair complete?–System OK–
5Replace the cassette radio.
Is the repair complete?–System OK–
SPEAKERS
Front Speakers Distorted or Inoperative, Rest of Audio System OK
StepActionValue(s)YesNo
11. Turn the ignition and the radio ON.
2. Check for distorted or inoperative front speak-
ers using the fader and the balance controls
with all of the sources (AM, FM, tape, CD).
Are the front speakers distorted?–Go to Step 2Go to Step 4
2Check the speaker and the door area for damage,
rattles, or vibration.
Is there anything loose or in the way of the speaker
causing the distortion?–Go to Step 3Go to Step 4
3Make the necessary repairs to secure the compo-
nent causing the distortion.
Is the repair complete?–System OK–
41. Remove the front speakers and disconnect the
speaker connector.
2. Using an ohmmeter, test the speaker wires for
a short to ground.
Does the ohmmeter show the specified value?Go to Step 6Go to Step 5
5Repair the short circuit between the front speaker
connector and the radio connector.
Is the repair complete?–System OK–
6Substitute a known good speaker for the speaker
causing the distortion.
Is the distortion eliminated?–Go to Step 7Go to Step 8
