Read Sony KP-FW46M91 / KP-FW51M91 Service Manual online
– 16 –
KP-FW46M91/FW51M91
RM-1015
3-6. BLUE DEFOCUS ADJUSTMENT
1. Receive 1080i/50Hz dot signal from HD/DVD 1 terminal.
2. Set “Hi Fine” and PICTURE 100%, other 50% and white
2. Set “Hi Fine” and PICTURE 100%, other 50% and white
balance “COOL” (VM OFF).
3. Blue 4 pole : make round in the center of screen.
4. Confirm that center dot focus is adjusted in focus (Fig.3-12a).
5. Adjust blue electrical focus to make the left side spot nearly
4. Confirm that center dot focus is adjusted in focus (Fig.3-12a).
5. Adjust blue electrical focus to make the left side spot nearly
round by minimizing width and height (Slight overfocus is
OK) (Fig.3-12b).
OK) (Fig.3-12b).
6. Confirm that the green to blue spot size is within spec.
Blue center dot height shall be
≤1.2 times the green dot heght.
7. Return making condition data to orignal data.
3-7. GREEN, RED AND BLUE FOCUS
ADJUSTMENT
3-7-1. Green, Red and 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 process for red and blue.
5. Repeat above process for red and blue.
3-7-2. 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
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.
3-5. 2-POLE AND 4-POLE MAGNET ADJUST-
MENT
3-5-1. Adjustment of 2-pole magnets
1. Receive the Dot signal (1080i/50Hz) from HD/DVD 1 termi-
nal.
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Turn the green focus volume of focus pack counter-clock-
wise, so that diameter of the dot become large.
4. Adjust the 2-pole magnet, counter-clockwise and clockwise
center of the dot doesn't move (Use focus volume).
5. Center position is changed by 2-pole magnet adjustment.
So, center magnet adjustment and 2-pole magnet adjustment
are needed tracking adjustment.
are needed tracking adjustment.
6. Repeat same adjustment method for red and blue.
3-5-2. Green, Red, Blue adjustment of 4-pole
magnets
1. Turn Grenn focus volume of focus pack clockwise.
2. By using 4 pole magnets make the spot size round.
3. Repeat for red and blue.
4. Turn focus pack counter-clockwise and “Just Focus” red,
2. By using 4 pole magnets make the spot size round.
3. Repeat for red and blue.
4. Turn focus pack counter-clockwise and “Just Focus” red,
green and blue.
3-5-3. Blue left side dot adjustment of 2-pole
Magnets
1. Turn blue focus volume of focus pack counter-clockwise, so
that diameter of the dot becomes large, and can see bright
core position.
core position.
2. Pay attentio to left side dot of the screen (Fig.3-10).
3. Adjustment 2 pole magnet, so that bright core position of dot
3. Adjustment 2 pole magnet, so that bright core position of dot
become center position of dot (Fig.3-11).
Use the center dot
NG
OK
Left-end dot
(BLUE)
(BLUE)
Right-end dot
(BLUE)
(BLUE)
Fig. 3-7
Fig. 3-8
Fig. 3-12a
Fig. 3-12b
Blue 2 Defocus
Adjustment Position
OK
Fig. 3-13
Adjust Point center
Fig. 3-14
Adjust Point
Fig. 3-9
OK
NG
NG
Use the center dot
Bright Core
Fig. 3-10
Blue 2 Pole magnet
Adjustment Position
Fig. 3-11
Click on the first or last page to see other KP-FW46M91 / KP-FW51M91 service manuals if exist.