Kenwood DNX4280BT Service Manual page 31

Procedure to clear Security Code
If the unit is started with the Security ON condition, use the
following procedure to clear the Security Code (in the mode
other than the Test Mode).
1) When the unit is Reset or is powered on after the backup
OFF under the Security ON condition, the unit boots up
from the Security Code Entry screen.
2) Select Audio SW mode on the remote controller, and
manually enter the code following the next procedure:
Step 1: Press Tenkey5 twice.
Step 2: Press Tenkey2 three times.
Step 3: Press Tenkey2 once.
Step 4: Press Tenkey7 twice.
HOW TO CLEAR SECURITY CODE
DNX4280BT/5180/5280BT/5380/5380M
/5380BT/5580BT/6040EX/6180/6480BT/6980
When the entry is made improperly during the Steps 1~4,
repeat the code entry from the Step 1 after entering other
remote controller Key.
When the Security Code Entry screen is cleared, the Secu-
rity Code clear is completed.
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