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3) Press the Volume up / down to adjust the data.
AL - (vertical linearity)
Adjust so that the boundary line between the upper and lower half
According to the geometric center of the horizontal transmission.
VA - (H)
Adjust so that the circle of a digital circle pattern may be located within an effective PPC screen.
SC - (Vertical "correction")
Adjust so that the distances between a horizontal line to be the same.
VS - (Vertical movement)
Adjust so that the horizontal center line of a digital model range
According to the geometric center of the horizontal transmission.
HS - (horizontal position)
Adjust so that the vertical center line of a digital model range
According to the geometric center of the vertical transmission.
EW - (W)
To adapt to this digital model of the circle looks like an exact circle.
EC - (East-West parabola)
Adjust so that the middle portion of the far left and right vertical line looks like parallel with vertical lines
PPC.
CRNU & CRNL
Adjust so that the vertical line on all 4 corners of the screen
It looks like parallel with vertical lines of transmission.
ET - (East-West trapeze)
Adjust to the length of the top horizontal line of the same to him in the lower horizontal line.

***

LG MC-994A

Service mode

As in any modern television receiver required after the repair or replacement of the RF control elements tract VPU and other components on the chassis 994A-MS run in service mode.
To operate in this mode, you need to have the remote control buttons teletext. Before making any adjustments include TV, served on its antenna input signal "Test Pattern" and heated for 15 ... 20 min.
To enter the service mode, simultaneously press the "OK" button on the remote control and the front of the TV, hold it until the screen displays a list of adjustable parameters (Fig. 1). The last line of "LINE SVC 0" indicates the number of the menu, but only five of them (LINE SVC 0-4).
Fig. 1. List of adjustable parameters in the service mode
The required parameter is selected using the four "top-down" and adjust the value with "right-left". To save the new setting press the "OK" button.

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