High Voltage Adjustment - Hitachi 36SDX88B Service Manual

Preparation for adjustment
(5) Receive White Raster
Signal of SVGA in group 1.
(Horizontal Frequency:
37.8kHz)
Adjustment procedure Notes
(6) Set Brightness to the
center, and Contrast to the
maximum.
2.32. High Voltage Adjustment
(1) Connect Deflection PWB
1) Connect High-Voltage meter between
assembly to the standard
FBT anode and CRT GNO.
set.
(2) Set AC 120&2V, 60Hz. (2) Leave the set heat-run for more than
1 minute.
(3) Receive White Raster (3) Turn High Voltage Adjustment VR, Adjustment criterion:
Signal with Circle Pattern
RH69 and then adjust High Voltage &0.2kV
of VGA3 in group I.
to 30 Ok0 2kV
(Horizontal Frequency:
m
31 .SkHz)
(Black line, 100% white
back raster)
(4) Set Brightness to the
center, and Contrast to the
maximum.
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