SHARP LC15B1U
Instrukcja Serwisowa

LC-15B1U

4. Adjustments
Adjustment 1 B+ Adjustment (R3760) Adjusting conditions Adjusting method 1. Connect the DC voltmeter to pin (2) of 1. Adjust the "B+ Adj" value to P3702. 5.0 ± 0.02V with R3760. * Keep the voltage at pin (2) of P3702 below 5.3V during the adjustment. 1. Go to the adjustment mode. 1. Select "INCH SIZE" and adjust to "15" with [VOL +] or [VOL �] key. * The color of "INCH SIZE" must be yellow. 1. Receive a B/W channel. 1. Adjust "COM BIAS" to the darkest 2. Go to the adjustment mode. screen with [VOL +] and [VOL �] key. 3. Select the "COM BIAS" with [MENU] * The color of "COM BIAS" must be key. yellow. 1. In the TV mode, the unit receives a picture of the half color bar signal whose left top corner is 75% white. The signal does not have to be the half color bar as long as the 180th line from the top and 46th pixel from the left is 75% white. (Data at this point is used for adjustment.)
Upper left 75%

2

Inch Size setup (If E2PROM is replaced) (IC2004)

3

Common-bias adjustment

4

TAMP adjustment

Vertical: 180th line Horizontal: 46th pixel

480 lines

640 pixels

2. Adjust "NTSC TAMP" on the page 2 of the adjustment process mode so that the "Y" value on the same page falls between BF - C9. Page 2 of the adjustment process mode
2 |COM BIAS NTSC TAMP PAL-M TAMP PAL-N TAMP RCUTOFF GCUTOFF BCUTOFF G3 B3 R3 G1 B4 Y TAMP H TAMP L 120 27 27 27 0 0 0 00 B5 C9 BF Y-Data (White 100%)

00 DF

00 DE

GAIBU VER 0.000

3. Set the values of PAL-M TAMP and PAL-N TAMP same.

12