AV
MULTI AV SYSTEM SYMPTOMS
AV-643
< SYMPTOM DIAGNOSIS >[BOSE AUDIO WITH NAVIGATION]
C
D
E
F
G
H
I
J
K
L
MB A
O
P
RELATED TO STEERING SWITCH
RELATED TO DVD
RELATED TO AUXILIARY INPUT
NOTE:
Check that there is no malfunction of AUX equipment main body before performing a diagnosis.
Symptoms Check items Possible malfunction location / Action to take
The CD cannot be removed. —Disk eject signal circuit.
Refer to AV- 4 8 1 , "
Diagnosis Procedure".
Audio sound is not heard.No sound from all speakers. Perform CONSULT-III self-diagnosis.
Refer to AV- 4 3 4 , "
CONSULT-III Function (MULTI AV)"
BOSE amp. power supply and ground circuits malfunc-
tion. Refer to AV- 4 6 6 , "
BOSE AMP. : Diagnosis Proce-
dure".
No sound from all speakers.
It dose not change to “DVD” mode.
Perform CONSULT-III self-diagnosis.
Refer to AV- 4 3 4 , "
CONSULT-III Function (MULTI AV)"Sound is not heard only from the specific
places.
AM/FM radio is not received. Other audio sounds are normal. Antenna amp. ON signal circuit.
Symptoms Probable malfunction location
None of the steering switch operations work.Steering switch signal GND circuit malfunction.
Refer to AV- 4 9 3 , "
Diagnosis Procedure".
Only specified switch (1) cannot be operated.Steering switch malfunction.
Replace steering switch.
Steering switch's “SOURCE”, “MENU UP”, “MENU DOWN”,
“ ”, “ENTER” switches do not work.Steering switch signal A circuit malfunction.
Refer to AV- 4 8 9 , "
Diagnosis Procedure".
Steering switch's “ ”, “VOL UP”, “VOL DOWN”, “ ”
switches do not work.Steering switch signal B circuit malfunction.
Refer to AV- 4 9 1 , "
Diagnosis Procedure".
Symptoms Check items Probable malfunction location
DVD image is not displayed Displayed in black and nothing displayed. Composite image signal circuit malfunc-
tion between AV control unit and display
unit.
Refer to AV- 4 8 6 , "
Diagnosis Procedure"
RGB area synchronizing (YS) signal cir-
cuit malfunction between AV control unit
and display unit.
Refer to AV- 4 7 3 , "
Diagnosis Procedure"
Horizontal synchronizing (HP) signal cir-
cuit malfunction between AV control unit
and display unit.
Refer to AV- 4 7 4 , "
Diagnosis Procedure".
Vertical synchronizing (VP) signal circuit
malfunction between AV control unit and
display unit.
Refer to AV- 4 7 5 , "
Diagnosis Procedure".
It dose not change to “DVD” mode.LED lump of DVD player is not turned on.DVD player power supply and ground cir-
cuits malfunction.
Refer to AV- 4 6 8 , "
DVD PLAYER : Diagno-
sis Procedure".
LED lump of DVD player is not turned on.Perform CONSULT-III self-diagnosis. Refer
to AV- 4 3 4 , "
CONSULT-III Function (MULTI
AV )"