Sharp 32F630 Service Manual - Page 12

Sub-Tint Adjustment 1. Receive the half color bar signal. • RF INPUT (TU51) 2. Get into Y-Mute by R/C, or by setting the "V11" bus data to "01". 3. Vary the "V02" bus data until the waveform becomes as stated below. LEVEL B-AMP Base waveform in step (TP47B) Sub-Color Adjustment 1. Receive a good local channel. 2. Make sure the customer color control is set to center position . • RF INPUT (TU51) 3. Enter the service mode and select service adjustment "V03". 4. Adjust "V03" data value to obtain a normal color level. Focus Adjustment 1. Receive a good local channel. 2. Adjust the FOCUS VR of the flyback transformer to make the image as fine as possible. C. C Display Position Adjustment 1. Receive the lion head pattern signal. 2. Select "EX2" to display the text box. 3. Adjust the "EX2" bus data to let the text box displayed in the center. DISPLAY OF TEXT BOX TEXT BOX | A-B | / 2 A B SPEC INSPECTION:| A-B | / 2 =< 5mm Vertical-Size and Linearity Adjustments 1. Receive a good local channel. (SCREEN FORMAT 4:3) 2. Enter the service mode and select the service adjustment "D03" for V-size. 3. Adjust the "D03" bus data to get the proper V-size. 4. For V-linearity adjustment, select data bus "D05" and adjust to get the proper vertical linearity. (SCREEN FORMAT 16:9) 5. Input data of "D22" to mines 36 step from "D03" data. (V-SIZE) 6. Input data of "D24" same as "D05" data. (V-LIN) 32F630 32F631 Note: Aging for 10 min before adjustment. After the adjustment of V-center and V-size, readjustment for this V-line. Vertical Phase Adjustment (SCREEN FORMAT 4:3) 1. Enter the service mode and input data of "00h" on "D01". 2. Adjust "D18" data value so that picture is centered. (SCREEN FORMAT 16:9) 3. Input data of "00h" on "D20". 4. Input data of "D34" same as "D18" data. Horizontal Position Adjustment 1. Receive a good local channel. (SCREEN FORMAT 4:3) 2. Enter the service mode and select the service adjustment "D02". 3. Adjust "D02" data value so that picture is centered. (SCREEN FORMAT 16:9) 4. Input data of "D21" same as "D02" data. Horizontal-Size Adjustment 1. Receive a good local channel. (SCREEN FORMAT 4:3) 2. Enter the service mode and select the service adjustment "D04" for H-size. 3. Adjust the "D04" bus data to get the proper H-size. (SCREEN FORMAT 16:9) 4. Input data of "D23" same as "D04" data. EW-Parabola 1. Receive a good local channel. (SCREEN FORMAT 4:3) 2. Enter the service mode and select the service adjustment "D07" for EW parabola. 3. Adjust the "D07" bus data to get the proper vertical straight line for both left and right side. (SCREEN FORMAT 16:9) 4. Input data of "D26" to mines 19 step from "D07" data. EW-Trapezium 1. Receive a good local channel. (SCREEN FORMAT 4:3) 2. Enter the service mode and select the service adjustment "D08" for EW-Trapezium. 3. Adjust the "D08" bus data to get the best position display. (SCREEN FORMAT 16:9) 4. Input data of "D27" same as "D08" data. 11