Sanyo LCD-32XL2 Service Manual

-13-Service AdjustmentsImportant Notice:Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of performance and forcorrect operation.AGC Adjustment1. Receive PAL-N colour bar pattern.(ANT Input Level: 62dBμV 75 ohms terminated)2. Connect a Digital Volt Meter to Tuner-AGC terminal(TP-A) and the ground.3. Enter the Service Mode, and select item TDA9885with ▲ or ▼ key.4. Select item Write 1 of TDA9885 with ▲ or ▼ key.5. Adjust voltage of Tuner-AGC to become 3.2V±0.3V DCwith VOLUME + or - key.White Balance Adjustment[ Setting ]1. Connect a color-bar generator to the external(composite) video input terminal (AV1 or AV3), andinput a White Pattern (90%).2. Set the television to following conditions:Picture Mode: DynamicPre-heating Time: More than 10 minutes[ White Balance Adjustment ]1. Enter the Service Mode, and select item “Other”with ▲ or ▼ key, then press the VOLUME + or - keyto enter the Sub menu.Adjustment Item:No. 55 White Balance RNo. 56 White Balance GNo. 57 White Balance B2. Set 55 White BalR, 56 White BalG and 57 White BalBvalue to “32” with VOLUME + or - key.TDA9885 FEWrite 1 10Data ValueItem No.Black Balance Adjustment[ Setting ]1. Connect a color-bar generator to the external(composite) video input terminal (AV1 or AV3 terminal),and input a dark gray pattern (10% white).2. Set the television to following conditions:Picture Mode: DynamicPre-heating Time: More than 10 minutes[ Black Balance Adjustment ]1. Enter the Service Mode, and select item “Other”with ▲ or ▼ key, then press the VOLUME + or - key toenter the Sub menu.Adjustment Item:No. 58 Black Balance RNo. 59 Black Balance GNo. 60 Black Balance B2. Set 58 Black BalR, 59 Black BalG and 60 BlackBalB value to “255” with VOLUME + or - key.3. Decide one item in three items to a fixed value(Example, let 58 Black BalR be fixed value), selectitem of other 2 colors (Example, 59 Black BalG or60 Black BalB) with ▲ or ▼ key, and adjust toproduce a normal black and white picture in dark grayareas with VOLUME + or - key.(Note: At this time, Adjust the other 2 colors data lessthan fixed data.)After adjustment, confirm white balance again bynormal picture.58 Black BalR 255Data ValueItem No. Item55 White BalR 32Data ValueItem No. Item3. Decide one item in three items to a fixed value(Example, let 55 White BalR be fixed value), selectitem of other 2 colors (Example, 56 White BalG or 57White BalB) with ▲ or ▼ key, and adjust to produce anormal black and white picture in highlight areas withVOLUME + or - key.(Note: At this time, Adjust the other 2 colors data lessthan fixed data.)After adjustment, confirm white balance again bynormal picture.