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Pacific Accessory Corporation
Page 5
Rev. 053017
Advanced Amplifier Interface
for Ford
AP4-FD21
Restoring Factory Settings
You can restore the interface to factory default settings by pressing and holding the programming button on the side of the module
until the status LEDs start blinking red. Once the LEDs start blinking red, release the button.
This reset will restore the following settings to their factory defaults:
• Chime volume level
• Enable / Disable Factory Chimes
• Minimum volume level
• Enable / Disable factory EQ
• Factory EQ frequency
• Factory EQ Q factor
Troubleshooting
1.
Hiss at high amp gain - Set feature DIP switch 2 to the on (down) position to lower the output voltage of the AP4 to 4v. If you
still hear the hiss, lower your amp gains until the hiss is gone.
2.
Cannot hear SYNC or nav voice - Use the volume knob while either of these voice prompts are active to adjust voice volume.
3.
Cannot hear chimes - Set chime volume using process outlined in Setup and Configuration or using the AmpPRO application.
If you still do not hear chimes, be sure that you are using the remote output from the AP4 to turn on your aftermarket amplifier.
4.
Low volume setting on radio is too loud - Set minimum volume using process outlined in Setup and Configuration or using the
AmpPRO application.
5.
SYNC or Bluetooth voice is cutting off too early - Set feature DIP switch 3 to the on (down) position.
6.
After using SYNC or Bluetooth, the volume knob becomes unresponsive - Set feature DIP switch 4 to the on (down) position
Action / Color
During Normal Operation
Solid Red
Module Active
Solid Green
Chime Volume Adjustment Mode
Solid Amber
Minimum Volume Adjustment Mode
Rapid Blink Any Color DSP Activity
LED2
Blink Amber
USB Connection Detected
Both LEDs
Alternate Blinking Red Performing eprom reset
LED Legend
LED 1
