Sharp 21SFX10L Service Manual - Page 18

21S-FX10L CLOSED CAPTION ADJUSTMENT NO ADJUSTMENT POINT 1 CLOSED CAPTION SET UP ADJUSTMENT CONDITION / PROCEDURE (1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz) (2) Go to service mode, choose service data V22. (3) Adjust the V22 bus data to have a balance position to spec of A=B (4) After the left and right symmetrical then V22 data reduce 5 step WAVEFORM OR OTHERS SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST ADJUSTMENT(1) NO ADJUSTMENT POINT ADJUSTMENT CONDITION / PROCEDURE 1 SCREEN (1) Set the service data before adjust CRT cutoff as follows: ADJUSTMENT a) V01 : 127 (I2C BUS CONTROL) b) V04 : 127 c) V15 : 127 d) V16 : 127 e) V17 : 127 f) V18 : 64 g) V19 : 64 (2) Receive the window pattern or US4 CH LION HEAD Signal (NTSC 60 Hz) (3) Go to service mode, get in Y-mute by R/C and set V23 to "1" (4) Adjust the Screen so that cut-off line appear in low bright, then judge that whether the cut-off data appear in Red or Green or Blue color, in this condition between V15 = R-CUTOFF, V16=G-CUTOFF & V17= B-CUTOFF, fix the data of the color appear in cut-off line and adj the other two cut-off line so that cut-off line color become white. (5)Turn the screen VR of FBT so that cut-off line just disappear and use R/C to set V23 to "0". Next disable the Y-Mute so that the picture appear in normal mode 2 WHITE BALANCE ADJ (1)WHITE (HIGH BEAM) (to be done after screen First use Minolta Color Analyzer CA100, let the gun point at Dark White position adj) (as drawing attach), Adj V04 until LUMINANCE Y become 5 cd/m2, then let the gun (I2C BUS CONTROL) point at White position ( as drawing attach), Adj V01 until LUMINANCE Y (CH 23 50IRE become: 150 cd/m2. WINDOW PATTERN) Adj the V18(R DRIVE) , V19(B DRIVE) until the axis of color temperature become 10700° X : 0.278 , Y : 0.280 (2) DARK WHITE (LOW BEAM) Let the gun point at Dark White position, if the color temperature data shift away from the data adjusted in Item 1 Screen adjustment, adjust V15,V16,V17. Please fix the first colour appears in Screen adj item step (4) is fixed, adj the other two so that to obtain the similar axis as above ** Repeat step 1 & 2 to get a regulated position A B NOTE: Service data R-cutoff up R-cutoff down G-cutoff up G-cutoff down B-cutoff up B-cutoff down WAVEFORM OR OTHERS R/C key (Hex) A9 69 E9 19 99 59 White Dark White 50% WHITE *Note : Use RF CH23 50IRE window pattern 5 - 6