Sony KP-44PX2 / KP-44PX2U Service Manual ▷ View online
– 29 –
KP-44PX2/44PX2U
RM-938
3. Operation Method for Fine Adjustment
(in GRN, BLU, or RED Mode)
1)
Select the Projector Engine mode.
2)
Select FDIS so that the data at each position can be
displayed in the fine adjustment mode, and set the data to
“01”.
3)
Press “9” button on the commander, and the fine adjustment
mode will be active where a green marker appears in the
center of screen (in the case of GRN mode).
4)
Press “
(OK)” button, and the marker color will be
switched between green (GRN mode) and white alternately.
5)
Use “1” or “4” button on the commander, or the joystick to
move the marker to the position to be adjusted, where
fine adjustment can be made.
•
When marker color is white.
(in this case, fine adjustment is disabled)
Operating the joystick can move the marker up, down, or to
the left or right freely.
•
When marker color is green. (GRN mode)
1
:
moves the marker clockwise from center to outside.
4
:
moves the marker counterclockwise from outside to center.
•
Fine adjustment can be made on the basis of marker
position using v, V, b, B keys on the joystick.
6)
Press “9” button on the commander to return to the rough
adjustment mode.
CROSSHATCH
Movement when v key
on joystick is pressed.
on joystick is pressed.
Movement when B key
on joystick is pressed.
on joystick is pressed.
CROSSHATCH
6-2-4. Projector Engine Adjustment
(Sub Deflection Adjustment)
Push the joystick
to v
to v
Push the joystick
to V
to V
Push the joystick
to B
to B
Push the joystick
to b
to b
• GRN CENT (horizontally/vertically)
<Adjustment for PAL-Wide Mode>
1. Green Adjustment
1)
Place the caps on the red and blue lenses so that only the
green color is displayed.
2)
Enter the PAL SPCB signal to set the PAL mode.
3)
Set the screen format to “Wide”.
4)
Select the Projector Engine mode.
5)
Press “6” button on the commander to display internal test
signal (crosshatch).
6)
Select “GRN CENT”, and adjust so that the picture coincide
in the center of screen.
Adjustment Type
Adjustment Item
GRN
RED
BLU
H / V
H / V
H / V
CENT
a / a
a / a
a / a
SKEW
a / a
a / a
a / a
SIZE
a / a
a / a
a / a
LIN
a / a
a / a
a / a
KEY
– / a
– / a
– / a
PIN
a / a
a / a
a / a
MLIN
a / –
a / –
a / –
MSIZ
a / –
a / –
a / –
Adjustment
a
a
a
a
a : Yes
– : No
7)
Select “GRN SKEW”, and correct the tilt of horizontal lines
and vertical lines.
• GRN SKEW (horizontally/vertically)
Push the joystick
to v
to v
Push the joystick
to V
to V
Push the joystick
to B
to B
Push the joystick
to b
to b
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KP-44PX2/44PX2U
RM-938
14) Press “9” button on the commander to enter the fine
adjustmentmode.
15) Make fine adjustment so that horizontal lines and vertical
lines become straight.
16) Press “9” button on the commander to return to the rough
adjustment mode.
8)
Select “GRN SIZE”, and adjust so that each distance from
center to left end and to right end is equal. Adjust so that
each distance from center to top and to bottom is equal.
• GRN SIZE (horizontally/vertically)
9)
Select “GRN LIN”, and adjust so that each space at the right
end and at the left end of screen is equal. Adjust so that each
space at the top and at the bottom of screen is equal.
13) Select “GRN PIN”, and adjust so that right and left vertical
lines on the screen become straight. Adjust so that upper
and lower horizontal lines on the screen become straight.
12) Select “GRN MSIZ”, and correct the space intervals for
the horizontal section of the screen are equal.
• GRN MLIN (horizontally)
• GRN MSIZ (horizontally)
• GRN LIN (horizontally/vertically)
11) Select “GRN MLIN”, and correct the sizes of the horizontal
line at the center of the screen are symmetrical left and right.
10) Select “GRN KEY”, and adjust so that upper and lower
horizon tal lines on the screen become parallel.
• GRN KEY (vertically)
• GRN PIN (horizontally/vertically)
Push the joystick
to v
to v
Push the joystick
to V
to V
Push the joystick
to B
to B
Push the joystick
to b
to b
Push the joystick
to B
to B
Push the joystick
to b
to b
Push the joystick
to B
to B
Push the joystick
to b
to b
Push the joystick
to B
to B
Push the joystick
to b
to b
Push the joystick
to v
to v
Push the joystick
to V
to V
Push the joystick
to v
to v
Push the joystick
to V
to V
Push the joystick
to v
to v
Push the joystick
to B
to B
Push the joystick
to b
to b
Push the joystick
to V
to V
2. Blue Adjustment
1)
Place a cap on the red lens so that green and blue colors
are displayed.
2)
Press “3” button on the commander to select BLU mode.
3)
Adjust the following items so that blue lines overlap with
green lines.
•
BLU CENT (horizontally/vertically)
•
BLU SKEW (horizontally/vertically)
•
BLU SIZE (horizontally/vertically)
•
BLU LIN (horizontally/vertically)
•
BLU KEY (vertically)
•
BLU PIN (horizontally/vertically)
•
BLU MLIN (horizontally)
•
BLU MSIZ (horizontally)
4)
Press “9” button on the commander to enter the fine
adjustment mode.
5)
Make fine adjustment so that horizontal lines and vertical
lines overlap with green lines.
6)
Press “9” button on the commander to return to the rough
adjustment mode.
– 31 –
KP-44PX2/44PX2U
RM-938
3. Red Adjustment
1)
Place a cap on the blue lens so that green and red colors
are displayed.
2)
Press “3” button on the commander to select RED mode.
3)
Hereinafter, use same manner as that of blue adjustment to
adjust so that the red lines overlap with green lines.
4. Registration Data Writing
1)
After each adjustment of green, blue, and red for the
PAL-Wide mode finished, press “
(MUTE)”+
“0” buttons on the commander to write registration data to
the NVM.
<Copy of All Registration Data>
1.
Make sure that the adjustment for PAL-Wide mode is
finished and the data has been written.
2.
Select the Projector Engine mode.
3.
Select ALCP and set the data to “01”, and press
“
(MUTE)”+“-” buttons on the commander.
4.
The data of PAL-Wide mode is copied to NTSC-Wide mode.
PAL
Wide
NTSC
Wide
Zoom
14 : 9
Smart
Copy Registration Data.
6-3. AUTO CONVERGENCE OFFSET
This adjustment must be performed after the registration adjustment
was made or after readjustment was made by any reason.
1. Darken the periphery of this set.
2. Enter the PAL SPCB signal to set the PAL mode.
3. Set the screen format to “Wide”.
4. Select the Projector Engine mode.
5. Press “
(AUTO CONVERGENCE)” button on the
front panel of the set.
(The offset value is now automatically stored)
6. Select “62 ERR” of Projector Engine mode.
Confirm ERR is “00”. If ERR is not “00”, recheck. (Refer to 6-7.)
7. Exit the TT mode.
8. Enter the NTSC monoscope signal, and perform the same
steps in the NTSC-Wide mode respectively.
a
b
c
Same level
6-4. WHITE BALANCE ADJUSTMENT
1. Enter the monoscope signal.
2. Press “MENU” button on the commander to enter the
Picture Adjustment menu.
3. Set the Picture Mode to “Personal”, and the screen
format to “Wide”.
4. Enter the Service menu (See Page 23), and select “Service”.
5. Adjust “Sub Bright” so that 10 IRE section barely glows.
6. Enter all-white pattern signal.
7. Fix “G-Cutoff” to “31”, and adjust “R-Cutoff” and
“B-Cutoff” so as to attain the optimum white balance.
Condition: All-White Pattern 20 IRE
8. Adjust “Sub Bright” so that 100 IRE section barely glows.
9. Adjust “R-Drive” and “B-Drive” so as to attain the
optimum white balance.
10. Repeatedly adjust the white balance for the minimum and
maximum picture setting.
6-5. SUB BRIGHT ADJUSTMENT
1.
Enter the monoscope signal.
2.
Press “MENU” button on the commander to enter the Picture
Adjustment menu.
3.
Set respective items as follows:
• Picture Mode B Personal
• Contrast B Minimum
• Brightness B 50%
4.
Enter the Service menu (See Page 23), and select “Service”.
5.
Adjust “Sub Bright” so that the border between 0 IRE and
10 IRE becomes distinct.
6.
Add +6 step offset.
6-6. SUB COLOR ADJUSTMENT
1.
Enter the color bar signal.
2.
Connect the oscilloscope probe to the CN7001 pin 5 on the A
board.
3.
Enter the Service menu (See Page 23).
4.
Select "Service".
5.
Adjust "Sub Col" until Cyan, Magenta and Blue colour bars
are of equal height as indicated below.
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