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Service adjustment
BUS CONTROL ADJUSTMENT
To enter BUS control mode, Press “TEST” key on the Remote control unit of factory.
Press “0” to “9“ key, (Mkey) and corresponding on-screen display will be appeared.
On TV screen “
OM8373
” will be indicated, this means entered bus control mode.
And press following key, each function will be available.
Remote Hand Unit keys
[1] [2] [3]
[M0]
menu
1,2
Number button 1
Geometrical adjustment
Receive
NTSC/M
standard Complete pattern signal.
Adjustment steps
:
a) Adjust
EWD
, to
adjust
EW trapezium
.
b) Adjust V
AM
, to get 90% of vertical picture contents would be displayed on CRT.
c) Adjust V
SH
, the center horizontal line correspond to CRT vertical center.
d) Adjust H
SH
, to get the picture horizontal center correspond to CRT horizontal center.
Receive NTSC signal and repeat above
1
and
2
adjustment.
Menu
4
AGC
Adjustment.
Receive 60dB
μ
(1mV)V
H
colour bar pattern signal
,
adjust
TOP
value
(
voltage from high to low
),
to noise reduce gradually and just disappeared point.
Menu
0
CRTcut off and white balance adjustment.
Receive white signal.
a) CRT cut off adjustment.
1. Select “
0
”, then automatically vertical scan will be stopped.
2. Adjust SCREEN control on Flyback transformer to get the darkest single horizontal
line (red, green, or blue, sometimes shows more yellow, more purple or more white).
b) White balance adjustment.
1. Select menu
3
.
2. Adjust R
e
D/
GRN
to get colour temperature as x=281, y=
296
1
7
Summary of Contents for NS-F27C
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