Raster Center Adjustment - Sony TRINITRON KD-34XBR2 Service Manual

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.
EQUIPMENT:
NTSC generator with monoscope pattern or white raster into
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.)
Tilt Correction: Set to Zero (0)
Vertical Correction: Set to Zero (0)
PROCEDURE:
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 #
2150P-2 6
2150D-3 0
2150D-2 2
2150D-2 1
2150D-2 16
2150D-2 18
2150D-2 0
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.
Device Name Adj. Item #
2150D-2 0
* 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 #
2150D-2 0
Name Data
AGNG 2
HBLK 0
HSIZ 20
HPOS 48
LANG 31
LBOW 31
HCEN 33
Name Data
HCEN *
Name Data
HCEN *
— 14 —
* 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.
This completes the raster center adjustment.
KD-34XBR2