When “ENTER” is displayed, “CODE” is also displayed. 3 Select the digits to enter Push the Control knob towards right or left. 4 Select the Security Code numbers Push the Control knob towards up or down. 5 Repeat steps 3 and 4, and complete the Security Code. 6 Confirm the Security Code Press the Control knob for at least 3 seconds. When “RE-ENTER” is displayed, “CODE” is also displayed. 10 | KDC-MP5539U/KDC-MP5039U/KDC-MP4039 7 Do the step 3 through 6 step operation, and reenter the security code. “APPROVED” is displayed. The Security Code function activates. . • If you enter a Code different from your Security Code, you have to start over from step 3. 8 Exit Security Code mode Press the [M.JOG] button. Entering Security Code The Security Code is required to use the audio unit when the unit is first used after removed from the battery power source or the Reset button is pressed. 1 Turn the power ON. 2 Do the step 3 through 6 step operation, and reenter the security code. “APPROVED” is displayed. . • If an incorrect code is entered, “WAITING” is displayed, and the input prohibition periods shown in the table below is generated. After the input prohibition time lapses, “CODE” is displayed, and you can reenter the code. Number of times the incorrect code was input Input prohibited time 1— 2 5 minutes 3 1 hour 4 24 hours Manual Clock Adjustment 1 Select Clock Adjustment item during Menu mode Select the “CLOCK ADJUST” display. For how to select menu items, refer to