Raster Position; Vertical Size (Normal Mode Only); Horizontal Size (Normal Mode Only) - Hitachi 53SDX20BB Service Manual

2.6 Raster position adjustment
Adjustment preparation
(1) The set can face east or west.
(2) Input the single cross test signal.
(3) Set video conditions to factory preset.
(4) The electric focus should have been coarse
adjusted.
(5) The digital convergence RAM should be cleared
(uncorrected state). With the TV set off, press
and hold the service switch located on the
Power/Deflection
power button.
(6) Start adjustment 20 minutes or more after TV is
turned on.
Adjustment procedure
(1) Turn the centering magnets for red, green, and
blue to satisfy the condition below. The red and
blue horizontal lines should match with green.
43"
53" SDX
53" FDX
Tolerance: ± 2mm
R
1
(2) Upon completion of adjustment, fix centering
magnets with white paint.
NOTES: (1) If internal cross-hatch does not appear
after clearing RAM data, press service
switch again.
(2) To restore old RAM data, turn TV off and
on.
2.7 Vertical size adjustment
Adjustment preparation
(1) The set can face east or west.
(2) Set video conditions to factory preset.
(3) The electric focus should have been coarse
adjusted.
(4) Start adjustment 20 minutes or more after TV is
turned on.
Adjustment procedure
(1) Receive any NTSC signal.
(2) Press the SERVICE
CONVERGENCE FOCUS PWB and POWER to
display DCU uncorrected convergence data.
PWB and then press the
(RED) (BLUE)
1
2
30 30
20 35
20 35
B
Geometric
center of the
screen
2
ONLY SW
(3) Locate the vertical size VR (R607) on
DEFLECTION PWB.
according to the following table.
43"
53" SDX
53" FDX
Between the
horizontal lines
at the top and
bottom
Notes:(1)
(2) To restore old RAM data, turn TV
(3) V-Size is only done in NORMAL
2.8 Horizontal size adjustment
Adjustment preparation
(1) The set can face east or west.
(2) Set video conditions to factory preset.
(3) The electric focus should have been coarse
adjusted.
(4) Start adjustment 20 minutes or more after TV is
turned on.
Adjustment procedure
(1) Receive any NTSC signal.
(2) Press
CONVERGENCE/FOCUS PWB and POWER to
display DCU unceorrected converge data.
(3) Locate the horizontal size VR (R711 on
POWER/DEF PWB). Adjust horizontal size to
the table below.
=
Notes: (1) Once Normal mode Horizontal size adj. is
done. To restore old RAM data, turn TV off
on
and on.
(2) After adjustment, press SERVICE ONLY
switch to exit DCU crosshatch.
(3) H. SIZE adjustment is only done in
NORMAL MODE (NTSC).
25
Adjust the vertical size
= NORMAL
MODE
590
710
710
Tolerance: ± 5mm
If internal cross-hatch does not
appear after clearing RAM data,
press service switch again (on
POWER/DEFLECTION PWB).
off and on.
mode (NTSC).
the SERVICE ONLY
NORMAL
MODE
43" 825
53" SDX 1000
53" FDX 1020
Tolerance: ± 5mm
The 6th line
from center
Between the
vertical lines
at the left and
right end.
The 5th line
from center
SW on