akira 21WHP3/BN, Руководство по обслуживанию

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Model No: 21WHS3-Bn
Version 1.0
Item RF. AGC adjustment
AKPH01 chassis
Measuring
Equipment SG and digital multi meter
service remote controller
Preparation
before Adj.
Connect a digital multi meter to AGC point on the chassis
Adjustment procedure
1, Receive the color bar signal that is 87.5% modulation and 60dBu level
2, Press AGC-TOP on service remote controller to select AGC-TOP adjustment,
press + or – key to adjust the voltage of AGC-TOP to 6.2 ± 0.05V that is read on
the digital multi meter.
Item
Vertical height, linearity and Hor. position adjustment
AKPH01 chassis
Measuring
Equipment SG
service remote controllers
Preparation
before Adj.
Brightness, contrast and color should be set in standard
MENU8 Geometrical adjustment
.
Receive standard Crosshatch pattern
signal for PAL system .
a)
Adjust VSLOPE value, to the horizontal
line just appear from
half bottom shadow.
b)
Adjust VSHIFT value, the center
horizontal line correspond to
CRT vertical center.
c)
Adjust Vamp value, to get 90% of vertical picture contents would be displayed
on CRT.
d)
Adjust HSHIFT value, to get the picture horizontal center correspond to CRT
horizontal center.
e)
Receive standard Crosshatch pattern signal for NTSC system, and again adjust.
Horizontal line
Shadow