Read Sharp XG-NV51XE (serv.man9) Service Manual online
26
XG-NV51XE/XM/XA
15
Video AGC
1. Feed the split colour bar
signal.
Group : VIDEO 1
Subject : AGC
Group : VIDEO 1
Subject : AGC
2. Connect the oscilloscope
between pin (2) of P801
and GND.
and GND.
»
Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level
difference to 1.50 ±0.02 Vp-p.
buttons, adjust the black-to-white (100%) level
difference to 1.50 ±0.02 Vp-p.
16
Video
brightness
adjustment
brightness
adjustment
1. Feed the baseband (split
colour bar) signal. (The
ON-AIR signal is not ac-
cepted because of its too
much noise.)
Group : VIDEO 1
Subject : BRIGHT
ON-AIR signal is not ac-
cepted because of its too
much noise.)
Group : VIDEO 1
Subject : BRIGHT
2. Press the control switch or
the remote control’s mute
button (to set the gamma
correction to the process
setting).
button (to set the gamma
correction to the process
setting).
»
Using the control switches or the remote controller
buttons, adjust the setting until the black signal
becomes bit-less and set to -2 point of value.
buttons, adjust the setting until the black signal
becomes bit-less and set to -2 point of value.
18
NTSC colour
saturation level
saturation level
1. Feed the split colour bar
signal.
Group : VIDEO 1
Subject : N-COLOR
Group : VIDEO 1
Subject : N-COLOR
2. Connect the oscilloscope to
pin (1) of P801.
»
Using the control switches or the remote controller
buttons, adjust the difference between the 100% white
portion and the red portion to 0.10 ±0.02 Vp-p.
buttons, adjust the difference between the 100% white
portion and the red portion to 0.10 ±0.02 Vp-p.
(same as 100% white)
17
Tint
1. Feed the split colour bar
signal.
Group : VIDEO 1
Subject : TINT
Group : VIDEO 1
Subject : TINT
2. Connect the oscilloscope to
pin (4) of P801.
»
Using the control switches or the remote controller
buttons, adjust the data to have the -(B-Y) wave-
form downhill straight.
buttons, adjust the data to have the -(B-Y) wave-
form downhill straight.
1.50Vp-p
100% White Red
No.
Adjusting point
Adjusting conditions
Adjusting procedure
Click on the first or last page to see other XG-NV51XE (serv.man9) service manuals if exist.