Sony KD-34XBR2 Service Manual ▷ View online
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KD-34XBR2
3-2. RASTER CENTER ADJUSTMENT
Perform this adjustment when any of the following have been
replaced in the unit, CRT, Defl ection Yoke or D Board.
replaced in the unit, CRT, Defl ection Yoke or D Board.
EQUIPMENT:
NTSC generator with monoscope pattern or white raster into
Video-1 input.
Video-1 input.
SET-UP CONDITION:
Display Mode: FULL (NTSC)
Picture Mode: STANDARD (select the STANDARD mode from the
menu, then press the RESET button on the remote control to set the
STANDARD settings to the factory settings.)
menu, then press the RESET button on the remote control to set the
STANDARD settings to the factory settings.)
Tilt Correction: Set to Zero (0)
Vertical Correction: Set to Zero (0)
PROCEDURE:
1. Enter the service mode.
1. Enter the service mode.
2. Select the following adjustment items and set their data as follows.
NOTE: DO NOT WRITE THE DATA TO MEMORY! To be safe, write
down the existing data values before changing them.
Device Name
Adj. Item #
Name
Data
2150P-2
6
AGNG
2
2150D-3
0
HBLK
0
2150D-2
2
HSIZ
20
2150D-2
1
HPOS
48
2150D-2
16
LANG
31
2150D-2
18
LBOW
31
2150D-2
0
HCEN
33
3. Center the raster between the left and right sides of the bezel. The
sides of the shrunken raster might not be straight at this point, so
use the sides of the raster at the half-way point between the top and
bottom to judge when the raster is centered.
use the sides of the raster at the half-way point between the top and
bottom to judge when the raster is centered.
Device Name
Adj. Item #
Name
Data
2150D-2
0
HCEN
*
* Adjust so that the raster is centered
4. Make a note of the data that was set in step 3.
5. Return all of the items adjusted in step 2 to their previous settings,
as follows:
1) Press the “0” button (“READ” appears in green letters at the top
right corner of the screen).
2) Press the “ENTER” button (“READ” changes from green to red,
and “READ” will change to “SERVICE”).
6. Re-enter the horizontal centering data from step 3, then write it to
memory as follows.
Device Name
Adj. Item #
Name
Data
2150D-2
0
HCEN
*
* Use the HCEN data from step 3, and then do the following:
1) Press the “MUTE” button (“WRITE” appears in green letters at the
top right corner of the screen).
2) Press the “ENTER” button (“WRITE” changes from green to red,
and “WRITE” will change to “SERVICE”).
Note: The raster horizontal centering adjustment data for the
FULL mode is automatically used for the other display
modes as well (NORMAL, ZOOM, WIDE ZOOM, and TWIN
mode). Do not change the raster horizontal centering
adjustment data in any of these display modes.
modes as well (NORMAL, ZOOM, WIDE ZOOM, and TWIN
mode). Do not change the raster horizontal centering
adjustment data in any of these display modes.
This completes the raster center adjustment.
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KD-34XBR2
4-1. FULL MODE ADJUSTMENT
SET-UP CONDITION:
Display Mode: FULL (NTSC)
Display Mode: FULL (NTSC)
Picture mode: STANDARD (select the STANDARD mode from the user
menu, then press the RESET button on the remote control to set the
STANDARD settings to the factory settings).
menu, then press the RESET button on the remote control to set the
STANDARD settings to the factory settings).
TILT CORRECTION: set to zero (from the user menu).
VERTICAL CORRECTION: set to zero (from the user menu).
PROCEDURE:
1. Enter the service mode.
1. Enter the service mode.
2. Display the monoscope or cross-hatch pattern.
3. Set the data for VPOS to 27, then adjust SCRL so that the pattern is
centered vertically on the screen.
Monoscope Pattern
A
B
A = B
Device Name
Adj. Item #
Name
Data
2150D-1
0
VPOS
27
2150D-1
12
SCRL
*
* Adjust as necessary to vertically center the pattern. If the monoscope
pattern is not available, use the cross-hatch pattern’s center dot as the
reference point.
pattern is not available, use the cross-hatch pattern’s center dot as the
reference point.
4. Write the data to memory.
5. Adjust the vertical size.
Device Name
Adj. Item #
Name
Data
2150D-1
1
VSIZ
*
* Adjust to meet the following spec.:
Monoscope pattern: 11.6 boxes.
Cross-hatch pattern: 90% of the full pattern height.
Monoscope Pattern
11.6 boxes
(monoscope
pattern only!)
(monoscope
pattern only!)
6. Write the data to memory.
7. Adjust the pattern so that it is centered on the screen horizontally.
Do not change the HCEN data to center the pattern! Use HPOS
to center the pattern. HCEN centers the raster; HPOS centers the
picture on the raster.
to center the pattern. HCEN centers the raster; HPOS centers the
picture on the raster.
Device Name
Adj. Item #
Name
Data
2150D-2
1
HPOS
*
* Adjust as necessary to horizontally center the pattern. If the
monoscope pattern is not available, use the cross-hatch pattern’s center
dot as the reference point.
monoscope pattern is not available, use the cross-hatch pattern’s center
dot as the reference point.
Monoscope Pattern
A
B
A = B
8. Write the data to memory.
SECTION 4. PICTURE SIZE AND GEOMETRY ADJUSTMENTS
Perform these adjustments when any of the following are replaced: CRT, defl ection yoke, D-board, and whenever touch-ups are required.
REQUIRED EQUIPMENT:
NTSC generator with monoscope pattern and cross-hatch pattern. (In lieu of the monoscope pattern, the cross-hatch pattern will suffi ce. However,
to correctly size the picture you must be able to calculate what percentage of the generator’s full pattern is being displayed due to the over-scanning
of the CRT.)
NTSC generator with monoscope pattern and cross-hatch pattern. (In lieu of the monoscope pattern, the cross-hatch pattern will suffi ce. However,
to correctly size the picture you must be able to calculate what percentage of the generator’s full pattern is being displayed due to the over-scanning
of the CRT.)
NOTE: Throughout these adjustment procedures you will be instructed to “Write the data to memory”. To do this, follow this procedure:
1. Press the “MUTE” button (“WRITE” appears in green letters at the top right corner of the screen).
2. Press the “ENTER” button (“WRITE” changes from green to red, then “WRITE” changes to “SERVICE”).
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KD-34XBR2
9. Adjust the horizontal size.
Device Name
Adj. Item #
Name
Data
2150D-2
2
HSIZ
*
* Adjust to meet the following spec.:
Monoscope
Monoscope
pattern:
15.6
boxes.
Cross-hatch pattern: 92% of the full pattern width.
Monoscope Pattern
15.6 boxes
(monoscope pattern only!)
10. Write the data to memory.
11. Display a cross-hatch pattern (do not use the monoscope pattern).
12. Equalize the vertical bow at the top and bottom of the screen.
Device Name
Adj. Item #
Name
Data
2150D-1
5
VCEN
*
* Adjust to make the bowing of the top and bottom lines equal.
13. Write the data to memory.
14. Adjust the vertical pin cushion.
Device Name
Adj. Item #
Name
Data
2150D-1
6
VPIN
*
* Adjust as necessary to make the horizontal lines as straight as possible.
15. Write the data to memory.
16. Adjust the picture keystone.
Device Name
Adj. Item #
Name
Data
2150D-1
8
HTPZ
*
* Adjust as necessary to make the horizontal lines as parallel as possible.
17. Write the data to memory.
18. Display a cross-hatch pattern (do not use the monoscope pattern).
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KD-34XBR2
19. Adjust the vertical linearity.
Device Name
Adj. Item #
Name
Data
2150D-1
3
VLIN
*
* Adjust as necessary so that the boxes at the top of the screen are the
same height as the boxes at the bottom of the screen.
same height as the boxes at the bottom of the screen.
A
B
A = B
20. Write the data to memory.
21. Display a cross-hatch pattern (do not use the monoscope pattern).
22. Adjust the vertical S-correction.
Device Name
Adj. Item #
Name
Data
2150D-1
4
VSCO
*
* Adjust as necessary so that the boxes at the top and bottom of the
screen are the same height as the boxes in the middle of the screen.
screen are the same height as the boxes in the middle of the screen.
A
B
A = B = C
C
23. Write the data to memory.
24. Display a cross-hatch pattern (do not use the monoscope pattern).
25. Adjust the horizontal linearity.
Device Name
Adj. Item #
Name
Data
2150D-2
3
SLIN
*
* Adjust as necessary so that the boxes at the left and right sides of the
screen are the same width as the boxes in the middle of the screen.
screen are the same width as the boxes in the middle of the screen.
A
B
A = B = C
C
26. Write the data to memory.
27. Display a cross-hatch pattern (do not use the monoscope pattern).
28. Adjust horizontal inner and outer pin cushion.
Device Name
Adj. Item #
Name
Data
2150D-2
4
MPIN
*
* Adjust as necessary to straighten the vertical lines of the cross-hatch
pattern. The MPIN adjustment is effective in the outer and inner areas
of the screen.
pattern. The MPIN adjustment is effective in the outer and inner areas
of the screen.
29. Write the data to memory.
30. Display a cross-hatch pattern (do not use the monoscope pattern).
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