Sony KP-46WT520 / KP-51WS520 Service Manual ▷ View online
KP-46WT520/51WS520
KP-46WT520/51WS520
30
46" V2 Assy
HB Wire Connection
KP-46WT520/51WS520
KP-46WT520/51WS520
31
SECTION 2: SET-UP ADJUSTMENTS
2-1. SCREEN VOLTAGE ADJUSTMENT (G2)
(COARSE ADJUSTMENT)
1. Receive the Monoscope signal.
2. Set BRIGHTNESS to 50% and PICTURE to minimum.
3. Turn the red VR on the focus block all the way to the left and then
gradually turn it to the right until the retrace line is barely visible.
4. Gradually turn the control to the left until the retrace line disappears.
R
G
B
SCREEN
R
G
B
FOCUS
FOCUS Block
2-2. SCREEN (G2) ADJUSTMENT (FINE
ADJUSTMENT)
If the jig described below is available, it is recommended that the G2
Fine Mode Adjustment be performed to set the screen controls to their
optimal condition. If desired, you can build the jig illustrated below,
using 3-watt resistors. Please note that if the proper voltage is not
obtained with the listed resistor’s values, then increase or decrease one
of the values in the resistor network to obtain the correct voltage.
Fine Mode Adjustment be performed to set the screen controls to their
optimal condition. If desired, you can build the jig illustrated below,
using 3-watt resistors. Please note that if the proper voltage is not
obtained with the listed resistor’s values, then increase or decrease one
of the values in the resistor network to obtain the correct voltage.
1. Select VIDEO-1 mode no signal applied (the screen must be black).
2. Connect the G2 JIG.
3. SW on JIG.
4. Connect an oscilloscope to the TP9101(KR), TP9201(KG) and
TP9301(KB) of CR board, CG board, and CB board.
5. Adjust red, green, and blue screen voltage to 177.5+/-0.5V with
screen VR on the focus block.
177.5V +/- 0.5V
G2 JIG
TP9202
(210V)
TO CG BOARD
GND
3.3k
5.6k
5.6k
6.8k
SW
K
GND
pedestal level
All resistors are 3W type
2-3. DEFLECTION YOKE TILT ADJUSTMENT
1. Connect the color bar generator monoscope pattern to Video 1 input.
2. Cover the red and blue CRT lenses with lens caps to allow only green
to show (or use the method shown in the note below for turning off
the CRTs individually without using lens caps).
the CRTs individually without using lens caps).
3. Loosen the CRT’s defl ection yoke set screw and align the tilt of the
defl ection yoke so that the horizontal bars at the center of the
cross-hatch pattern are parallel to the top and bottom edges of the
screen.
cross-hatch pattern are parallel to the top and bottom edges of the
screen.
4. After aligning the defl ection yoke fasten it securely to the
funnel-shaped portion (neck) of the CRT.
5. Cover the green and blue CRT lenses with lens caps to allow only
green to show (or use the method shown in the note below for turning
off the CRTs individually without using lens caps), then repeat steps 3
and 4 for the red CRT.
off the CRTs individually without using lens caps), then repeat steps 3
and 4 for the red CRT.
Cover the green and red CRT lenses with lens caps to allow only
green to show (or use the method shown in the note below for turning
off the CRTs individually without using lens caps), then repeat steps 3
and 4 for the blue CRT.
green to show (or use the method shown in the note below for turning
off the CRTs individually without using lens caps), then repeat steps 3
and 4 for the blue CRT.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams by controlling the service mode MCP-RON, GON, BON.
beams by controlling the service mode MCP-RON, GON, BON.
2-pole magnet
4-pole magnet
Deflection yoke
Anode cap
Centering magnet
KP-46WT520/51WS520
KP-46WT520/51WS520
32
2-4. FOCUS LENS ADJUSTMENT
In this adjustment, use the remote commander while in service mode.
For details on the usage of the service mode and the remote commander,
please refer to section
2-10. ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER.
For details on the usage of the service mode and the remote commander,
please refer to section
2-10. ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER.
1. Loosen the lens screw.
2. Cover the red and blue CRT lenses with lens caps to allow only green
to show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps).
CRTs individually without using lens caps).
3. Turn the green lens to adjust to the optimum focus point with the
crosshatch signal.
4. Tighten the lens screw.
5. Cover the green and blue CRT lenses with the lens caps to allow only
red to show (or use the method shown in the note below for turning off
the CRTs individually without using lens caps).
the CRTs individually without using lens caps).
6. Turn the red lens to adjust to the optimum focus point with the
crosshatch signal.
7. Tighten the lens screw.
8. Cover the green and red CRT lenses with the lens caps to allow only
blue to show (or use the method shown in the note below for turning
off the CRTs individually without using lens caps).
off the CRTs individually without using lens caps).
9. Turn the blue lens to adjust to the optimum focus point with the
crosshatch signal.
10. Tighten the lens screw.
11. After adjusting the items:
2-5. FOCUS VR ADJUSTMENT,
2-7. 2-POLE MAGNET ADJUSTMENT,
2-8. 4-POLE MAGNET ADJUSTMENT,
reconfi rm the optimum focus point and adjust again if necessary.
* In PJE mode, every time 6 is pressed, the test signal changes to:
“crosshatch+video signal”
→ “crosshatch+borderline (black)” →
”crosshatch (black)”
→ “dots (black)” → “all white” → off
Test Signal
A
B
Lens
Minimize both A and B.
Center of crosshatch
Scanning line visible.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams by controlling the service mode MCP-RON, GON, BON.
beams by controlling the service mode MCP-RON, GON, BON.
2-5. FOCUS VR ADJUSTMENT
1. Set generator to crosshatch.
2. Cover the red and blue CRT lenses with lens caps to allow only green
to show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps).
CRTs individually without using lens caps).
3. Turn the green focus VR on the focus block to adjust to the optimum
focus point with the crosshatch signal.
4. Cover the green and blue picture lenses with lens caps to allow only
red to show (or use the method shown in the note below for turning off
the CRTs individually without using lens caps).
the CRTs individually without using lens caps).
5. Turn the red focus VR on the focus block to adjust to the optimum
focus point with the crosshatch signal.
6. Cover the green and red picture lenses with lens caps to allow only
blue to show (or use the method shown in the note below for turning
off the CRTs individually without using lens caps).
off the CRTs individually without using lens caps).
7. Turn the blue focus VR on the focus block to adjust to the optimum
focus point with the crosshatch signal.
8. After adjusting the items:
2-4. FOCUS LENS ADJUSTMENT,
2-7. 2-POLE MAGNET ADJUSTMENT,
2-8. 4-POLE MAGNET ADJUSTMENT,
reconfi rm the optimum focus point and adjust again if necessary.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams by controlling the service mode MCP-RON, GON, BON.
beams by controlling the service mode MCP-RON, GON, BON.
R
G
B
SCREEN
R
G
B
FOCUS
FOCUS Block
KP-46WT520/51WS520
KP-46WT520/51WS520
33
2-6. CENTERING MAGNET ADJUSTMENT
1. Set the mode to PRO.
2. Receive the monoscope signal.
3. Cover the red and blue CRT lenses with lens caps to allow only green
to show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps).
CRTs individually without using lens caps).
4. Adjust the green CRT’s centering magnet to put the center of the
monoscope signal to the center of the screen.
5. Repeat steps 1 through 4 for the red CRT except now you will cover
the green and blue CRT lenses with lens caps to allow only red to
show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps) and you will adjust the red
centering magnet.
show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps) and you will adjust the red
centering magnet.
6. Repeat steps 1 through 4 for the blue CRT except now you will cover
the red and green CRT lenses with lens caps to allow only blue to
show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps) and you will adjust the blue
centering magnet.
show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps) and you will adjust the blue
centering magnet.
7. After 2-Pole and 4-Pole adjustment, entering magnet adjustment
needs to be confi rmed. If centering magnet is re-adjusted, then 2-Pole
magnet will need to be confi rmed.
magnet will need to be confi rmed.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams by controlling the service mode MCP-RON, GON, BON.
beams by controlling the service mode MCP-RON, GON, BON.
2-7. 2-POLE MAGNET ADJUSTMENT
1. Set the mode to PRO and picture to MAX.
2. Receive the 100IRE 1080i Dot signal.
3. Cover the red and blue CRT lenses with lens caps to allow only green
to show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps).
CRTs individually without using lens caps).
4. Turn the focus VR on the focus block to the left (counter clockwise)
and set it to overfocus to enlarge the spot.
5. Adjust the CRT’s 2-pole magnet so that the small bright spot is in the
center.
6. Align the focus VR on the focus block and set it for the best focus.
7. Repeat steps 1 through 6 for the red CRT covering the green and
blue CRT lenses with lens caps to allow only red to show (or use the
method shown in the note below for turning off the CRTs individually
without using lens caps) and you will adjust the red focus control on
the focus block.
method shown in the note below for turning off the CRTs individually
without using lens caps) and you will adjust the red focus control on
the focus block.
8. Repeat steps 1 through 6 for the blue CRT covering the red and green
CRT lenses with lens caps to allow only blue to show (or use the
method shown in the note below for turning off the CRTs individually
without using lens caps) and you will adjust the blue focus control on
the focus block.
method shown in the note below for turning off the CRTs individually
without using lens caps) and you will adjust the blue focus control on
the focus block.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams by controlling the service mode MCP-RON, GON, BON.
beams by controlling the service mode MCP-RON, GON, BON.
2-8. 4-POLE MAGNET ADJUSTMENT
1. Set the mode to VIVID and WIDE mode = Zoom, VM:Off.
2. Receive the 100IRE 1080i Dot signal.
3. Cover the red and blue CRT lenses with lens caps to allow only green
to show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps).
CRTs individually without using lens caps).
4. Turn the (green) focus VR on the focus block to the right (clockwise)
and set it to under-focus to reduce the spot.
5. Adjust the 4-pole magnet so that the small spot in the center of the
screen becomes round for green and red.
6. Adjust the blue spot to a round shape X:Y=1:1
7. Repeat steps 1 through 6 for the red CRT except now you will cover
the green and blue CRT lenses with lens caps to allow only red to
show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps) and you will adjust the red
focus control on the focus block.
show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps) and you will adjust the red
focus control on the focus block.
8. Repeat steps 1 through 6 for the blue CRT except now you will cover
the red and green CRT lenses with lens caps to allow only blue to
show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps) and you will adjust the blue
focus control on the focus block.
show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps) and you will adjust the blue
focus control on the focus block.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams by controlling the service mode MCP-RON, GON, BON.
beams by controlling the service mode MCP-RON, GON, BON.
x
y
x : y = 1:1 (Green, Red)
Use the center dot
2-9. DEFOCUS ADJUSTMENT (BLUE)
Note: Adjust the blue dot to be slightly larger than red and green dots.
This adjustment provides a more pleasing picture to the customer.
This adjustment provides a more pleasing picture to the customer.
1. Set the mode to PRO, PICTURE : Max, COLOR TEMP : Cool.
2. Receive the 100IRE 1080i Dot signal.
3. Cover the red and green CRT lenses with lens caps to allow only blue
to show (or use the method shown in the note below for turning off the
CRTs individually without using lens caps).
CRTs individually without using lens caps).
4. Turn the blue focus VR on the focus block to the right (clockwise) until
blue spot is in focus.
5. Change mode to VIVID to confi rm Flare level is minimal using cross
hatch signal.
6. Set the generator to an all white signal and check uniformity.
Note: If lens caps are unavailable, you can cut off the unnecessary color
beams by controlling the service mode MCP-RON, GON, BON.
beams by controlling the service mode MCP-RON, GON, BON.
Adjust Point
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