KP-FR43M31, KP-FR43M91 - Sony TV Service Manual (repair manual). Page 13

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KP-FR43M31/FR43M91
   RM-GA001
3-8. GREEN, RED AND BLUE FOCUS
ADJUSTMENT
3-8-1.
Green, Red, Blue Lens focus adjustment
1. Input a cross hatch signal into VIDEO 1. (composite
video input)
2. Place a lens cover over red and blue lenses and project
only green.
3. Rotate the green lens and adjust to obtain the best lens
focus at the center area.
4. Fix lens screw.
5. Repeat above proces for red and blue.
Fig. 3-13
3-8-1.
Green and Red electrical focus adjustment
1. Input a cross-hatch signal into VIDEO 1.
2. Project only Green.
3. Rotate the green focus volume on the focus pack and
adjust to obtain the best focus at the center screen.
4. Repeat above process for red.
Fig. 3-14
3-9. FINAL FOCUS CHECK
1. Receive 1080i/50Hz dot signal from HD/DVD 1 terminal.
2. Set “CUSTOM” MODE and PICTURE 100%.
3. Cap Red and blue lens.
4. Confirm that Green Resolution is within spec.
5. Receive HD (1080i) Hatch signal.
6. Confirm center and corner monochromatic flare within
spec.
7. Repeat process for Red if resolution is without spec
readjust focus.
Resolution (TV Line)
Model
Center
85% circle
53
750
600
43
750
600
Adjust Point center
Adjust Point
Monochromatic flare (mm)
Model
Center
85% circle
53
1.0
2.5
43
1.0
2.5
or NG set
1. Adjust Focus Again.
2. If NG again, rotate Green Lens 180 degree.
3. Still NG, then judge with below standard.
Center “750”
85% circle: “600” at 3 points, and “550” at 1 point
4. Replace Green, Red Lens.
We mark this Lens, try to fit this Lens with another set.
If NG again in another set, this Lens is leaved.
3-10. ADJUSTMENTS WITH COMMANDER
Service adjustment to this model can performed with the
supplied remote commander RM-GA001.
3-10-1. How to Enter Service Mode
1. Turn on the main power switch to place this set in
standby mode. (LED will light in red.)
2. Press the buttons on the commander as follows, and
enter service mode.
3. After entering service mode, reset current adjustment
data. Then turn off the power switch.
4. Turn on the main power switch and enter mode again as
step 2 above.
85%
70%
Enter the
“Service mode”
(
)
ON SCREEN
DISPLAY
(
)
TV
STANDBY
(VOLUME +)
(DIGIT 5)
2
5
:/1
Enter the
“Reset”
(ENTER)
(DIGIT 8)
8
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