Sharp GX30 Service Manual - Page 47

External display contrast adjustment, 8.16 White defect correction,

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CONFIDENTIAL 4.8.15 External display contrast adjustment Click the "External display contrast adjustment" button. The following screen appears. GX30 DEN: 075 8-level gradation pattern (black & white pattern) Figure 76 Comparing with an adjusted handset, click " " or " " to adjust the value so that the same gradation pattern is displayed. Click "Save" and confirm the pattern on the external display. 4.8.16 White defect correction * White defect correction: Defective pixels in a camera light sensor appear as bright points in the display even when light is blocked completely (display is all black). Perform white defect correction to eliminate errors in these pixels. 1. Protect the handset camera from light completely with a black cover. 2. Click the "White defect correction" button. The following screen appears. Figure 77 Click the "Yes" button and leave it for about 20 seconds. When completed, the following message appears. Figure 78 2 - 39

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GX30
2 – 39
CONFIDENTIAL
4.8.15 External display contrast adjustment
Click the “External display contrast adjustment” button. The following screen appears.
Figure 76
Comparing with an adjusted handset, click “
” or “
” to adjust the value so that the same gradation pattern is displayed. Click “Save” and confirm
the pattern on the external display.
4.8.16 White defect correction
* White defect correction:
Defective pixels in a camera light sensor appear as bright points in the display even when light is blocked completely (display is all black). Perform
white defect correction to eliminate errors in these pixels.
1.
Protect the handset camera from light completely with a black cover.
2.
Click the “White defect correction” button. The following screen appears.
Figure 77
Click the “Yes” button and leave it for about 20 seconds. When completed, the following message appears.
Figure 78
DEN:
075
8-level gradation pattern (black & white pattern)