While holding down the "VOL (+)" and "CH (ô)" keys at a time, press the "POWER" key of the main
unit to turn on the power.
(The VOL "(+)" and "CH (ô)" keys should be pressed and held until the display appears.)
The letter " K " appears on the screen.4) Press the VOL "+/-" key or CH " /ô" key on the remote control.
(Therefore, move to the [L ERR RESET] line, the 5th line on the first page of the "Display process mode",
using the Cursor UP/DOWN key. Then, reset the [L ERR RESET] value using the Cursor RIGHT/LEFT
key. In this case, press the Cursor UP/DOWN key to reset it to "0".