SHARP LC15B2EA
Manual de Servicio

LC-15B2EA

4. Initialization
When the microprocessor (IC2001) or the EEPROM (IC2004) has been replaced or when the EEPROM has been initialized, readjust the each adjustments. 4-1. Connect the pins (81) and (82) of IC2001 (microprocessor) to GND, and turn on the power. 4-2. Select the model name to (B2EA). 4-3. Select the inch size (15). 4-4. LED changes green from red after setting finish and about 15 seconds, initialization is completed, and it becomes adjustment mode.

5. Adjustment
5-1. +B adjustment...Page 1 +B-ADJ Adjust the voltage of the pin (13) of P2002 to 5.00 ±0.02V. Note: Since 5.0V is a reference voltage of all power voltage, adjust it precisely. 5-2. Counter-bias adjustment Vary the "COM BIAS" setting on Page 2 of the adjustment process mode so that the contrast be sharpest (black looks most sinking). 5-3. TAMP adjustment 1) Receive the upper left of 75% white half colour bar signal. 2) See if the �Y� reading on page 2 of the adjusment process mode is somewhere following. If not, make the �PAL TAMP� adjustment to get the �Y� reading in the range of BF thru C9. 3) If the adjustment of �PAL TAMP� is executed, write its adjustment value to the �SECAM TAMP� manually. (Screen of the page 2 of the adjustment processing menu OSD)
0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 C P S R G B G G T T O A E C C C 3 1 A A M M P P M L C U U U A T T T B T M O O O B B F F F 3 4 H L I A A M T F F F R 3 Y 0 0 0 0 0 0 0 0 � 0 B C B S P A M P 1 2 2 2 � 0 7 7 5 0 1 0 E 9 F 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Y Data (White 75%)

5-4. White balance adjustment Adjust �RCUTOFF� and �BCUTOFF� on the page 2 of the adjustment processing so as to obtain the colour of the same level as the standard set. Note: For the adjustment processing of �RCUTOFF� and �BCUTOFF�, adjust them in the indication value range of ... �9, �7, ... �1, +1, ... +7, +9. When it becomes even-numbered value, side favor noise sometimes occurs in the monochrome signal of the specific gradation.

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