Manual was complete and available promptly, since I had lost my original manual. Very good response.
Text excerpt from page 31 (click to view)
When Security Lock works?
Once you register the password, â â appears on the display, and the unit will ask you to enter the password in the following cases: â¢ When you turn on the unit for the first time after re-installing the unit. â¢ When you turn on the unit for the first time after replacing the car battery. To use this unit, you must enter the correct password by following the procedure below. 1 Press DISP (display) to select the character set you want. 2 Turn the control dial to enter a character. 3 Press Â¢ or 4 to move the character entry position. 4 Repeat steps 1 to 3 to enter the entire password (4 letters) correctly, then press SEL (select). â¢ If you enter the correct password, the security lock is canceled and you can use the unit normally. â¢ In the following cases, the security lock is not canceled (âNOT ACCEPTâ appears on the display) then the unit turns off. (The unit will never turn on unless you press the reset button on the front panel. See page 2.) â If you enter an incorrect password then press SEL (select). â If you cannot finish entering the correct password within 30 seconds. If you enter an incorrect character while entering the password Press 4 to move back the character entry position over the incorrect character, then repeat steps 1 and 2 to select the correct character.
To change the password
If you want to change the password after you have registered it, follow the procedure below. 1 Press SEL (select) and Â¢ at the same time for more than 2 seconds. â â appears on the display. 2 Enter the current password correctly, then press SEL (select). The unit enters password entry mode. 3 Enter a new password as you want, then press SEL (select). The password flashes on the display for a while, then the unit returns to the normal operation mode. â¢ See page 30 for details on how to enter the password.