Sharp 21FL94 Service Manual - Page 21

ADJUSTMENT ITEM ADJUSTMENT POSITION V01 SUB-PICTURE STEP RANGE 0-127 CONTROL I2C BUS CONTROL PRE-ADJUST REQUIREMENT OPTION SET UP, BUS SET UP, SCREEN, WHITE BALANCE, SUB-BRIGHTNESS CONTENT WINDOW PATTERN INPUT CONDITION 220V OUTPUT CRT SCREEN DISPLAY. 1) LET THE GUN POINT AT WHITE POSITION (AS ATTACH DRAWING), ADJUST V01 BUS DATA UNTIL BRIGHTNESS Y=150 cd/m2. NOTE: ALLOWABLE DATA FOR V01 IS >= 90, EVEN Y CAN'T MATCH THE SPEC ADJUSTMENT ITEM ADJUSTMENT POSITION V02 SUB-TINT STEP RANGE 0-127 CONTROL I2C CONTROL PRE-ADJUST REQUIREMENT OPTION SET UP, BUS SET UP, VCO ADJ, RF-AGC CONTENT US 10 CH HALF COLOR BAR PATTERN INPUT CONDITION OUTPUT 220V B-AMP TR BASE (TP853) CONFIRRM WITH OSCILLOSCOPE 1) GET IN Y-MUTE FUNCTION BY R/C. 2) ADJUST THE V02 BUS DATA TO GET A WAVEFORM AS BELOW. 3) DISABLE THE Y-MUTE **PLS TAKE NOTE THAT SERVICE MODE DATA F61 NEED TO SET +8 ADJUSTMENT PROCEDURE WHITE US14 ADJUSTMENT PROCEDURE B-AMP BASE (TP853) MUST BE IN STEPPING LEVEL 21FL94 21 [VOLTAGER CONFIRMATION] BRIGHTNESS Y=150 cd/m2 HISTORY SYMBOL REVISED CONTENT, OF REVISION 21-1 [CONFIRMATION] HISTORY SYMBOL REVISED CONTENT, OF REVISION 21-2