How to set :

To set the Factory mode, press Volume 0 dac on the TV and Timer Setting 30 min on the remote control and press Volume (-) Down button on the TV together press recall on the remote control.
CHK should appear on right of TV screen.
To movefrom CHK1 to CHK2 mode, etc. please follow below rotation :

To Set Self-Check :

Press the Volume Down button on TV then press the Off Timer button on remote control.

2.2 Factory Mode Adjustment