Leader Electronics Corp. LT 443D, Instruction Manual

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4-3
4.5.3.2 Setting KEY LOCK ON
(1) Select the [KEY LOCK SET] by pressing the [Up] or [Down] key, then press the
[ENTER] key.
(2) The key lock mode is enabled. [KEY LOCK ON] is displayed for about one second,
then status mode is enabled.
When the key is pressed in key lock mode, the following message is displayed for
about one second.
4.5.3.3 Setting KEY LOCK OFF
(1) To cancel key lock mode, hold down the MENU key for at least two seconds.
[KEY LOCK OFF] is displayed for about one second.
＊ The [FORMAT] in the SYSTEM block are disabled during the KEY LOCK switch
o
is set ON even when the key lock mode is canceled with the menu.
4.5.4 Using Front Panel KEY LOCK Switch
Setting the [KEY LOCK] slide switch on locks the [FORMAT] key operation.
If the [FORMAT] key is pressed when the [KEY LOCK] slide switch is set on, the LCD
displays the following messages:
When setting the KEY LOCK slide switch, use an insulated wedge-shaped screwdriver, for
example.
KEY LOCK ON
KEY LOCK !!
PUSH MENU KEY 2 sec
1. UTILITY MENU
KEY LOCK SET
KEY LOCK OFF
KEY LOCK ON
TURN OFF KEY_LOCK_SW
Hierarchy level 1