18 | KDC-BT742U/ KDC-X493/ KDC-MP442UActivating Security Code⁄• You can set the Security Code with a 4 digit number of yourchoice.• The Security Code cannot be displayed or referenced. Makea note of the Security Code and treasure it up.1 Select Security Code item during Menumode (In Standby mode)“SECURITY SET” is displayed.For how to select Function Control items, refer to (page 6).2 Enter Security Code modePress the [AUD] knob for at least 1 second.When “ENTER” is displayed, “CODE” is also displayed.3 Enter Security CodeOperation type OperationSelect the digits to enter Push the [AUD] knob towards rightor left.Select the Security CodenumbersTurn the [AUD] knob or push ittowards up or down.4 Confirm the Security CodePress the [AUD] knob for at least 3 seconds.When “RE-ENTER” is displayed, “CODE” is alsodisplayed.5 Do the step 3 through 4 operation, and reenterthe Security Code.“APPROVED” is displayed.The Security Code function activates.⁄• If you enter the wrong Code in steps 3 through 4, repeatfrom step 3.6 Exit Security Code modePress the [SEARCH] button.Entering Security CodeThe Security Code is required to use the audio unitwhen the unit is first used after removed from thebattery power source or the Reset button is pressed.1 Turn the power ON.2 Do the step 3 through 4 operation, and enterthe Security Code.“APPROVED” is displayed.Now, you can use the unit.Deactivating Security CodeTo deactivate the Security Code function.1 Select Security Code item during Menumode (In Standby mode)Select the “SECURITY CLR” display.For how to select Function Control items, refer to (page 6).2 Enter Security Code modePress the [AUD] knob for at least 1 second.When “ENTER” is displayed, “CODE” is also displayed.3 Enter Security CodeOperation type OperationSelect the digits to enter Push the [AUD] knob towards rightor left.Select the Security CodenumbersTurn the [AUD] knob or push ittowards up or down.4 Press the [AUD] knob for at least 3 seconds.“CLEAR” is displayed.The Security Code function deactivates.5 Exit Security Code modePress the [SEARCH] button.⁄• If a wrong security code is entered, “ERROR” is displayed.Enter a correct security code.Other Functions