Read Sony KP-FR43M31 / KP-FR43M91 Service Manual online
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KP-FR43M31/FR43M91
RM-GA001
3-5. DEFLECTION YOKE TILT ADJUSTMENT
1. Receive the Monoscope signal.
2. Place the caps on the red and blue lens so that only the
2. Place the caps on the red and blue lens so that only the
green color.
3. Loosen the deflection yoke setscrew and align the tilt of
the Deflection yoke so that the bars at the center of the
monoscope pattern are horizontal.
monoscope pattern are horizontal.
4. After aligning the deflection yoke, fasten it securely to
the funnel-shaped portion of the CRT.
5. The tilt of the deflection yoke for red and blue is aligned
the same as was done for green.
Fig. 3-6
3-6. 2-POLE AND 4-POLE MAGNET ADJUSTMENT
3-6-1.
Adjustment of 2-pole magnets
1. Receive the Dot signal (1080i/50Hz) from HD/DVD 1
terminal.
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)
volume)
5. Center position is changed by 2-pole magnet
adjustment. So, center magnet adjustment and 2-pole
magnet adjustment are needed tracking adjustment.
magnet adjustment are needed tracking adjustment.
6. Repeat same adjustment method for red and blue.
Fig. 3-7
Fig. 3-8
3-6-2.
Green, Red, Blue adjustment of 4-pole magnets
1. Turn Green 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.
Fig. 3-9
2-Pole Magnet
VM Coil Assy
Centering Magnet
Anode Cap
4-Pole Magnet
Deflection Yoke
Use the center dot
NG
OK
Left-end dot
(BLUE)
Right-end dot
(BLUE)
3-6-3.
Blue left side dot adjustment of 2-pole Magnets
1. Turn blue focus volume of fucus pack counter-clockwise,
so that diameter of the dot becomes large, and can see
bright core position.
bright 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
3. Adjustment 2 pole magnet, so that bright core position of
dot become center position of dot. (Fig. 3-11)
Fig. 3-10
Fig. 3-11
3-7. BLUE DEFOCUS ADJUSTMENT
1. Receive 1080i/50Hz dot signal from HD/DVD 1 terminal.
2. Set “VIVID” and PICTURE 100%, other 50% and white
2. Set “VIVID” and PICTURE 100%, other 50% and white
balance “COOL” (VM OFF), PIOF: 0.
3. Blue 4 pole: make round in the center of screen.
4. Confirm that center dot focus is adjusted in focus.
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)
overfocus is 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 g reen dot
height.
height.
7. Return data to original condition.
Fig. 3-12a
Fig. 3-12b
NG
NG
OK
Use the center dot
Bright Core
Blue 2 Pole magnet
Adjustment Position
Blue 2 Defocus
Adjustment Position
just focus
Adjustment Position
just focus
OK
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