Hitachi 61HDX98B Service Manual page 43

RED, GREEN and BLUE CENTERING FOR THE DP-85 CHASSIS
Centering
adjustment
using
the Centering Magnets.
Adjustment procedure:
'I ) Select the Green
adjustment mode, "Recall" 8
on the remote controt.
"See Digital Convergence
adjustment procedure'.
Mode, "Input" on the
remote control.
1) Display a Cross-Hair signal
from an external generator.
2) Contrast: Maximum
Brightness: Center 2
3) The focus adjustment
should have been 3
completed.
') Adjust the B centering
magnet and align the center
of B with the Right
Apply the Digital
convergence overlay.
centering offset mark on
the overlay.
Press the "Menu" button on Offset Measurements.
the remote to turn off Red
The actual measurements for
and Blue.
Red and Blue offset are as
Adjust the centering follows:
magnets for G on the back Red is aligned 10 mm left of
side of the Deflection Yoke center
and align the center of the
Blue is aligned 30 mm right of
G Crosshatch to the center center.
of the overlay.
2) The electrical focus should
have been adjusted. 4
,)
5) Yoke Tilt should have been
completed.
6) The convergence DCU RAM
should have been
CLEARED. (With Power
OFF, press and hold the 5) Select Red adjustment
Service Switch down, then Mode, "0" on the remote
press power. When picture control.
appears, press the Service 6) Adjust the R centering
Switch again to bring up magnet and align the center
the DCU Crosshatch. )
of R with the left centering
offset mark on the overlay.
7) Select Blue adjustment
Geometric
+I-- -----I+
Red offset = IOmm
Blue offset = 30mm
-r
Green
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