Audio Control Module (ACM) Self-Diagnostic Mode

Audio Control Module (ACM) Self-Diagnostic Mode

WARNING: Before beginning any service procedure, REFER to Safety Warnings . Failure to follow this instruction may result in serious personal injury.

General Procedure

1. NOTE: If the ACM (Audio Control Module) is completely inoperative (does not power up), obtain the ACM (Audio Control Module) part number using the part number decal on the ACM (Audio Control Module) chassis.
Turn the ACM (Audio Control Module) on.

2. Operate the audio system in radio tuner (AM/FM (Amplitude Modulation/Frequency Modulation)) mode.

3. Press and hold the eject button, and within 1 second, press the seek up button until the speaker walk around test begins.

- The display indicates each speaker as it is tested.

4. NOTE: If the speaker walk-around test is the only desired test, this procedure can be stopped after Step 3 by turning the ACM (Audio Control Module) off or by selecting exit using the audio system control buttons.

Once the speaker walk-around test is complete, the following information is available through the" BEZEL DIAGNOSTICS" menu using the audio system control buttons:

NOTE: The AHU Diagnostics refers to the ACM (Audio Control Module) and EFP Diagnostics refers to the FCIM (Front Controls Interface Module).





5. To exit the self-diagnostic mode, select exit diagnostics from the menu or turn the ACM (Audio Control Module) off.