Sony KP-44PX2 / KP-44PX2U Service Manual ▷ View online
– 21 –
KP-44PX2/44PX2U
RM-938
4-5. 2-POLE MAGNET ADJUSTMENT
1.
Receive the Dot signal.
2.
Place the caps on the red and blue lens so that only the
green color is shown.
green color is shown.
3.
Turn the green focus VR on the focus pack to the right and
set to over focus to enlarge the spot.
set to over focus to enlarge the spot.
4.
Now align the 2-Pole Magnet so that the enlarged spot is in
the center of the just focus spot.
(center of the dot doesn't move)
the center of the just focus spot.
(center of the dot doesn't move)
5.
Align the green focus VR and set for just (precise) focus.
6.
Perform the same alignment for red and blue.
Fig. 4-6
4-6. 4-POLE MAGNET ADJUSTMENT
1.
Receive the Dot signal.
2.
Place the caps on the red and blue lens so that only the
green color is shown.
green color is shown.
3.
Turn the green focus VR on the focus pack to the left and
set to under focus to enlarge the spot.
set to under focus to enlarge the spot.
4.
Now align the 4-Pole Magnet so that the enlarged spot
becomes a perfect circle.
becomes a perfect circle.
5.
Perform the same alignment for red and blue.
Fig. 4-7
Fig. 4-8
Adjust Point
Use the center dot
Use the center dot
OK
NG
NG
4-7. GREEN, RED AND BLUE FOCUS
ADJUSTMENT
4-7-1. Green, Red and Blue Lens Focus
Adjustment
Adjustment
1.
Receive the Monoscope signal.
2.
Place the caps on the red and blue lens so that only the
green color is shown.
green color is shown.
3.
Rotate the green lens and adjust to obtain the best lens
focus at the center area.
focus at the center area.
4.
Fix lens screw.
5.
Repeat above process for red and blue.
4-7-2. Green, Red and Blue Electrical Focus
Adjustment
1.
Receive the Monoscope signal.
2.
Place the caps on the red and blue lens so that only the
green color is shown.
green color is shown.
3.
Rotate the green focus VR on the focus pack and adjust
to obtain the best electrical focus at the center area.
to obtain the best electrical focus at the center area.
4.
Repeat above process for red and blue.
– 22 –
KP-44PX2/44PX2U
RM-938
When replacing the following components marked with on the
schematic diagram, always check hold-down voltage and if necessary
re-adjust.
5-1. HV Hold-Down Adjustment
1.
Connect HV static voltmeter to HV Block.
2.
Mount a resistor (R9901 : 43 k , 1/4 W, METAL
FILM) at CN5003.
3.
Remove CN5002 and connect External Power Supply
to CN5002 1 pin (+135 V) and 2 pin (GND).
4.
Turn on the set.
Part Replaced ( )
D Board
C5123, C5127, C5130, C5143, D5115,
D5204, Q5104, R5136, R5138, R5140,
R9901, T5102, T5104, T5103 (FBT)
D5204, Q5104, R5136, R5138, R5140,
R9901, T5102, T5104, T5103 (FBT)
Part Replaced ( )
R9901
5.
Receive the Dot signal and set PICTURE/
BRIGHTNESS to minimum.
6.
Slowly up the supply voltage from 0 V to 135 V
until hold-down circuit works (picture disappear).
7.
Read the HV static voltmeter of peak HV voltage.
Spec : 33.7 ~ 35.3 kV
8.
If Hold-down voltage is less than 33.7 kV then
replace R9901 of 43 k with that of 39 k , and
check if the voltage is within the spec.
9.
If hold-down voltage is over than 35.3 kV then
replace R9901 of 43 k with that of 47 k , and
check if the voltage is within the spec.
+
–
1
CN5002
Power
Supply
Supply
2
D BOARD
– CONDUCTOR SIDE –
CN5002
CN5003
CN5003
R9901
Fig. 5-1
Fig. 5-2
Fig. 5-3
Fig. 5-4
Remove the cap off
from the unused
terminal and connect a
HV static voltmeter
there.
from the unused
terminal and connect a
HV static voltmeter
there.
SECTION 5 SAFETY RELATED ADJUSTMENT
– 23 –
KP-44PX2/44PX2U
RM-938
6-1-1.
How to Select Each Mode
Adjustment is required in the following modes:
1. Selection of Mode Between PAL and NTSC
PAL mode
: Enter PAL signal.
NTSC mode
: Enter NTSC signal. (VIDEO input only)
2. Selection of Screen Format
1)
Press ' (BLUE)' button on the commander.
to select 'Wide', 'Zoom', '14 : 9', '4 : 3' or 'Smart'.
3.
Press 99999. All three LED’s should light.
The remote commander is now set to Service Mode.
The remote commander is now set to Service Mode.
4.
To return the remote commander to normal operation mode
repeat steps 1. and 2. then press 00000. All three LED’s
should light.
The remote commander is now set to normal mode.
repeat steps 1. and 2. then press 00000. All three LED’s
should light.
The remote commander is now set to normal mode.
6-1-2. Programming the Remote Commander for
Operation in Service Mode
Operation in Service Mode
6-1-3. Setting the TV into Service Mode
1.
Program the remote commander for operation in Service
Mode as described above.
Mode as described above.
2.
Turn on the TV main power switch.
3.
Press the video standby button
on the remote
commander twice.
‘TT ’ will appear in the upper right corner of the screen.
Other status information will also be displayed.
‘TT ’ will appear in the upper right corner of the screen.
Other status information will also be displayed.
4.
Press ‘MENU’ on the remote commander to obtain the
following menu on the screen.
5.
Move to the corresponding adjustment item using the
up or down arrow buttons on the Remote Commander.
up or down arrow buttons on the Remote Commander.
6.
Press the right arrow button to enter into the required menu item.
7.
Press the ‘Menu’ button on the Remote Commander to quit the
Service Mode when all adjustments have been completed.
Service Mode when all adjustments have been completed.
Note :
·
·
After carrying out the service adjustments, to prevent the
customer accessing the ‘Service Menu’ switch the TV set
OFF and then ON.
customer accessing the ‘Service Menu’ switch the TV set
OFF and then ON.
1.
Press the VCR/TV/DVD button until the
TV LED lights.
TV LED lights.
2.
Press and hold the yellow button for
approx. 5 seconds until the TV LED
flashes quickly.
approx. 5 seconds until the TV LED
flashes quickly.
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SECTION 6 ELECTRICAL ADJUSTMENTS
6-1. Adjustments with Commander
Service adjustments to this model can be performed using the
supplied remote Commander RM-938.
supplied remote Commander RM-938.
TV STANDBY
ON SCREEN
DISPLAY
DISPLAY
SCREEN
FORMAT
FORMAT
Wide
Zoom
14 : 9
14 : 9
4 : 3
Smart
MUTE
TV MODE
VOLUME +
JOYSTICK
MENU
VOLUME -
VIDEO STANDBY
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– 24 –
KP-44PX2/44PX2U
RM-938
6-1-4.
Screen Display for Service Menu
If each item of service menu is selected, the following screen
is displayed.
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4
2
0
2
0
Click on the first or last page to see other KP-44PX2 / KP-44PX2U service manuals if exist.