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

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•  Verify the customer complaint and identify the malfunction as occurring from either the audio panel or the base unit.

How to activate audio panel switch confirmation mode

1.  With the audio power on, press the POWER button and simultaneously press the CLOCK button for approx. 1 s.

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

STEP

INSPECTION

ACTION
1
•  Press each button on the audio unit.
•  Does the buzzer sound when a button is pressed?
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 base unit.
•  Activate the audio panel switch confirmation mode.
•  Does the buzzer sound when a button is pressed?
Yes
Go to the next step.
No
Replace the audio unit.
(See AUDIO UNIT REMOVAL/INSTALLATION.)
(See AUDIO UNIT DISASSEMBLY/ASSEMBLY.)
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.