28JW-74H (serv.man18) - Sharp TV Service Manual (repair manual). Page 8

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8
28JW-74H
Horizontal
• Horizontal Shift
• E-W Width
• Pin Phase
• Pin Amp
• Corner Amplitude
• Corner Symmetry
Just in case the TV set requires a full geometry adjustment, please proceed  first with Vertical according to the above
order, and after that,  adjust Horizontal according to the above  order.
Vertical
• Vertical Amplitude
• Vertical Shift
• Vertical Bow
• Vertical Angle
• S Correction
• Vertical Linearity
Horizontal Shift
Adjust the Horizontal Shift so that the picture is centred.
The effect of this adjustment is shown in figure 2.
• When the volume up button is pressed, the picture moves to the right.
• When the volume down button is pressed, the picture moves to the left.
• Press the stand-by button on the remote control to store.
E-W Width
Adjust the E-W Width so that 8% over-scan is achieved.
The effect of this adjustment is shown in figure 3.
• When the volume up button is pressed, horizontal scanning decreases.
• When the volume down button is pressed, horizontal scanning increases.
• Press the stand-by button on the remote control to store.
Pin Phase
Adjust the Pin Phase so that the picture is symmetrical top and bottom.
The effect of this adjustment is shown in figure 4.
• When the volume up button is pressed, side pincushion changes.
• When the volume down button is pressed, side pincushion changes.
• Press the stand-by button on the remote control to store.
Pin Amp
Adjust the Pin Amp so that the picture is centred.
The effect of this adjustment is shown in figure 5.
• When the volume up button is pressed, side pincushion changes from pincushion to
barrel shape.
• When the volume down button is pressed, side pincushion changes from barrel
shape to pincushion.
• Press the stand-by button on the remote control to store.
Corner Amplitude
Adjust the Corner Amplitude so that the picture is centred.
The effect of this adjustment is shown in figure 6.
Note: This adjustment affects to upper and lower sides.
• When the volume up button is pressed, side pincushion changes from pincushion to
barrel shape.
• When the volume down button is pressed, side pincushion changes from barrel
shape to pincushion.
• Press the stand-by button on the remote control to store.
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
 
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