HYOSUNG MX-4000W Operator's Manual page 161

MX-4000W 5. Operator Function
If you select the 'ENTER MASTER KEYS' button as depicted as above, you will see the screen as
same as below to confirm whether you want to enter the screen for implanting master keys or not.
Enter the PASSWORD 1 and PASSWORD 2 to execute KEY MANAGEMENT.
(Default PASSWORD 1 is '000000'. And default PASSWPRD 2 is '000000' as well)
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