INTRODUCTION TO AUDIO SYSTEM DIAGNOSIS
The diagnosis for symptoms such as noise being emitted, no sound being played, or sound coming only out of one side while listening to the audio system or tape is provided.
CIRCUIT OPERATION
Power is supplied to the radio and CD player when the ignition switch is in the "ACC" position or "ON" position. When the previous ignition switch is in the "OFF" position by battery power, the "ON" or "OFF" state of the radio and CD player is saved.
TECHNICAL DESCRIPTION (COMMENT)
The cause is probably a faulty radio and CD player power supply circuit system.
- The sound is heard from the speaker according to audio signal output from the radio and CD player.
The cause is probably a faulty speaker circuit system.
The CD auto changer is connected via only the DIN cable to the radio and CD player. Therefore, if the DIN cable is defective, the audio system does not operate normally.
The power is constantly supplied to the radio and CD player.
The cause is probably a faulty radio and CD player memory backup power supply circuit system.
Three-minute operation mode
To facilitate replacement or check, the radio and CD player can be operated for three minutes without inputting the security code.
Scheme 1
- Press the "PWR" button and "EJECT" button together to operate the radio and CD player.
- In three minutes the unit will not be able to work. Then the radio and CD player will be switched off.
See also:
• SPEAKER