G2 Alignment; White Balance; Focus; Horizontal Center - Aiwa TV-SE2130EZY Service Manual

5. G2 Alignment (SCREEN)
Input signal: Black signal
Adjustment point: SFR located at lower part of FBT (T402)
Measuring instrument: Pattern generator/PAL
Test point: R cathode (NECK C.B)
5-1. Set the TV to the "Normal I" mode.
5-2. Set the Black R and Black G data values on the menu screen
to 8.
5-3. Set the WP Red, WP Green and WP Blue data values on the
menu screen to 32.
5-4. Connect an oscilloscope to the test point.
5-5. Adjust the lower SFR of FBT (T402) so that the voltage at
the test point is 125 ± 5 V.

6. White Balance

* Perform aging before adjustment for at least 20 minutes.
* Perform all adjustment steps several times.
Set the TV to the "Normal I" mode when performing adjustment
steps 6-1 _ 6-10.
Cutoff Adjustment:
Input signal: Stairstep (chroma OFF)
Measuring instrument: Pattern generator/PAL
6-1. Supply a stairstep signal from the pattern generator.
6-2. Use the "Vol +/-" buttons on the remote control to adjust the
Black R and Black G values on the menu screen so that the
color of scales A is gray.
Drive Adjustment:
Input signal: White raster
Measuring instrument: Pattern generator/PAL
6-3. Supply white raster from the pattern generator.
6-4. Use the Vol +/- buttons on the remote control to set the
WP Red value to 63 so that the picture is reddish.
6-5. Lower the value until red disappears.
6-6. Use the Vol +/- buttons on the remote control to set the
WP Green value to 63 so that the picture is greenish.
6-7. Lower the value until green disappears.
6-8. Use the Vol +/- buttons on the remote control to set the
WP Blue value to 63 so that the picture is bluish.
A
Fig. 6-1
6-9. Lower the value until blue disappears.
6-10. Perform steps 2-1 _ 2-9 several times so that the picture is
seen more white.

7. Focus

Input signal: Dot pattern
Adjustment point: SFR located at upper part of FBT (T402)
Measuring instrument: Pattern generator/PAL
Adjust SFR which B located at upper part of FBT (T402) in
order to get the best focus for the dot.

8. Horizontal Center

Input signal: Crosshatch
Measuring instrument: Pattern generator/PAL
8-1. Set the TV to the "Normal I" mode.
8-2. Choose H. Shift from the menu screen.
8-3. Adjust the "Vol +/-" buttons on the remote control so that
the dot mark at the center of crosshatch is positioned at the
center of screen, and the number of squares on the left and
right is the equal.
-30-
Center
A B
Fig.8-1