Sharp 70FW-53I Service Manual page 6

70FW-53E
Note that the receiver should be set to FULL MODE before carrying out any geometry adjustments. This can be
achieved by pressing the wide-screen mode button on the remote control until FULL MODE appears on the OSD. This
can only be done out of the Service Mode.
The following geometry adjustments can be carried out. Detailed instructions on how to execute these are given on the
following pages
Horizontal
• HORIZONTAL SHIFT
• E-W WIDTH
• PIN PHASE
• PIN AMP
• UPPER CORNER CORRECTION
• LOWER CORNER CORRECTION
If the receiver requires a full geometry set up, ensure that the vertical adjustments are carried first. It is important that the
adjustments are made in the order shown.
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 AMPLITUDE 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.
UPPER CORNER CORRECTION
Adjust the UPPER CORNER CORRECTION so that the picture is centred.
The effect of this adjustment is shown in figure 6.
• When the volume up button is pressed, side pincushion changes from pincushion to
barrel shape.
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Vertical
• VERTICAL AMPLITUDE
• VERTICAL SHIFT
• S CORRECTION
• VERTICAL LINEARITY
6
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6