akira PTV-50H08, Service Manual

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Blue protrusion
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Model No.: PTV-50H08
Version: 1.0
Adjustment Procedure:
1. Select the mesh to be adjusted with key picture on the remote controller, and select the mesh to be
displayed with key sound on the remote controller.
2. Adjust the deviations of blue and red based on green to make it less than 1mm.
3. Write: Press Key Write on the remote controller and confirm the write with Key Sound (press Key
Mix to cancel the write). Return to the adjustment status after the write. Readjust if the convergence
deviation exceeds 1mm.
4. Press Key SK01 on the convergence plate, Key CONV on the front panel or Key Exit on the remote
controller to exit the convergence status.
5. Adjustment on Blue Defocusing
a. Receive the PAL dot square signal.
b. Turn the blue focusing potentiometer clockwise to maximum.
c. Turn the blue focusing potentiometer counterclockwise to protrude the blue focusing
in the screen center a distance of less than 1 mm, as shown in the following figure.
Nine-dot Convergence Adjustment for Users: adjust with three scanning modes of
60P, 100I and 1250I YPRPB signal respectively.
1 Enter Nine-dot Convergence Adjustment for Users:
In the TV mode, press Key CONV on the side panel to enter the adjustment status, and the nine dots
distributed on the screen.
2 Exit Nine-dot Convergence Adjustment for Users:
i. Wait for 60 seconds with no adjustment to automatically exit the adjustment status.
ii. At the nine-dot convergence status, press Key ESC on the remote controller to exit
without saving data; press Key CONV on the side panel to exit with data saved.
iii. Press Key CONV on the side panel to exit with data saved.
3 Position Selecting in Nine-dot Convergence Adjustment for Users:
Press Keys 1 to 9 on the remote controller to move the cursor onto the position to be adjusted.
4 Color Selecting in Nine-dot Convergence Adjustment for Users:
Press Key i on the remote controller to alter the color.
5 Data Resetting in Nine-dot Convergence Adjustment for Users:
Method one: In the status of Nine-dot Convergence Adjustment for Users, press Key Reset on the
remote controller.
Method two: Power up the TV set with Key CONV on the side panel being pressed.