CONFIRMATION STEP 1: AUDIO PANEL SWITCH CONFIRMATION [ENTIRE AUDIO SYSTEM]

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•  Verify the customer complaint and identify either the audio panel malfunction or audio unit malfunction.

How to activate audio panel switch confirmation mode (with audio system)

1.  Turn the audio unit power to on.

2.  While pressing the POWER/VOLUME switch, simultaneously press the Preset switch“3” switch for approx. 0.2 s.

3.  The audio panel switch confirmation mode is now activated.

STEP

INSPECTION

ACTION
1
•  Press each switch on the audio panel.
•  Does buzzer sound when pressing each switch?
Yes
Verify the customer complaint and then go to the appropriate symptom troubleshooting procedure.
No
Go to the next step.
2
•  Disassemble and reassemble the audio panel and audio unit.
•  Activate the audio panel switch confirmation mode.
•  Does buzzer sound when pressing each switch?
Yes
Go to the next step.
No
Replace the audio unit.
(See AUDIO UNIT REMOVAL/INSTALLATION.)
3
Does the audio system operate properly?
Yes
The system is normal.
No
Verify the customer complaint and then go to the appropriate symptom troubleshooting procedure.