Hitachi 53SDX01B Service Manual page 46

Note: If only minor adjustments to convergence are
needed, the jig screen is not necessary. Use
digital data stored in memory and one color as a
reference (red, green, or blue). DO NOT CLEAR
DATA and WRITE to ROM memory.
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Adjustment preparation
(1) Position adjustment - This will move an entire
color. Use this adjustment to match colors at the
center of the screen. (Active video center from
external signal and physical screen center
should now match from phase adj. 2.2.).
(2) Use the buttons below to switch color to adjust.
"RECALL" - Green
"0" - Red
"INPUT" - Blue
Adjustment procedure
(1) Press the FREEZE button. Extra horizontal lines
appear to confirm raster position mode.
(2) Use the thumb stick to adjust position.
(3) Press FREEZE again to exit raster position
mode.
Notes: (1) Other functions cannot be accessed when
in raster position adjustment mode. Press
FREEZE and confirm extra horizontal lines
disappear to exit raster position mode.
(2) Press MENU to switch between all colors
displayed or adjustment color and Green
only.
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Adjustment preparation
(1) Select color to adjust.
"RECALL" - Green
"0" - Red
"INPUT" - Blue
(2) Use 4, 6, 2, and 5 to move the cursor position
(dotted lines).
(3) Use thumb stick to move the convergence point.
(4) Three adjustment modes are available:
1. (3x3) Press "RECALL" 5 times (only works
when DCU is in uncorrected state)
2. (7x5) Press "0" 5 times
3. (13x9) Press "INPUT" 5 times
For touch-up, only the (13x9) mode is necessary.
This will adjust every cross-hatch intersection point
on the screen.
For complete adjustment, start with (3x3) mode. This
will adjust center point and eight edge points only,
but will greatly reduce adjustment time. Then use
(7x5) mode, and finally (13x9) mode to finish
convergence.
If "S" distortion appears between cross-hatch lines
repeat (7x5) mode to change calculation process
while adjusting to remove distortion, then return to
(13x9) mode to finish touch-up convergence.
Adjustment procedure
PROGRESSIVE MODE
(1) Receive any NTSC signal.
(2) Start adjustment at the center of the screen.
(3) Continue adjustment at next closest position.
(4) Adjust center area first, ending with edge
sections.
(5) Press INFO button to perform calculation
operation. This process will take about 2
seconds and no picture will be seen at this time.
(6) After interpolation, check convergence again
and repeat (1)-(5) if necessary.
(7) When convergence is acceptable, press PIP
MODE to write data to ROM memory. ROM
WRITE? is displayed to alarm system that ROM
will be overwritten with new data. Press the PIP
MODE button again to write displayed data to
ROM.
(8) DATA WRITE TO ROM will take approximately 4
seconds and no picture will be displayed.
(9) Green dots will be displayed when operation is
completed.
(10) Press MUTE to return to convergence pattern,
then confirm again convergence is acceptable.
(11) Press PIP MODE (ROM WRITE) mode, then
press PIP CH to initialize sensor data positions.
Adjustment procedure
HD MODE
(1) Receive any HD signal.
(2) Repeat steps 2~11 above.
Notes: (1) Display only green for easier adjustment
and match to jig screen. Press "MENU",
THEN PRESS "RECALL".
(2) Perform interpolation and data write to ROM
after green adjustment. Once green has
been confirmed to match jig screen, the jig
screen can be removed. Do not readjust the
green color after jig screen has been
removed. This is now your reference color.
(3) Display green and red only and match red to
green.
(4) Display all colors and match blue to green
and red. Touch-up red color if necessary.
(5) Existing DATA in ROM can be read by
pressing the SWAP button 2 times. This
data can be used after replacing a
component (CRT, DY, etc.) Where complete
convergence adjustment is not necessary
be careful not to overwrite this data.
DO NOT write cleared RAM data into ROM
or a complete convergence adjustment will
be necessary. Remember to try MAGIC
FOCUS
adjustment to minimize adjustment time.
Ze
before starting convergence