Service manual

X&XV1 E/A
No.
Adjusting point
Adjusting conditions
Adjusting proceduri
14 Video picture
1. Make the following choice:
l Using the membrane switch or the remote control
adjustment
Group : VIDEO 1
button, adjust the black-to-white (100%) level differ-
Subject : PICTURE
ence to 1 .l +0.02 Vp-p.
2. Connect the oscilloscope
between pin (2) of P801
and GND.
u /
~~ -.,:~~vp-p
15 Video AGC
1. Feed the NTSC split colour
l Using the membrane switch or the remote control
bar signal.
button, adjust the black-to-white (100%) level differ-
Group
: VIDEO 1
ence to 0.9 +0.02 Vpp.
Subject : AGC
2. Connect the oscilloscope
between pin (2) of P801
and GND.
16 Video
brightness
adjustment
1. Feed the NTSC black sig-
l Using the membrane switch or the remote control
nal.
button, decrease 2 points from the level where the
Group : VIDEO 1
black signal becomes bit-less (dotted).
Subject : BRIGHT
2. Press the membrane switch
or the remote control’s mute
button (to set the gamma
correction to the process
setting).
17 Tint
1. Feed the NTSC colour bar
l Using the membrane switch or the remote control
signal.
button, adjust the data to have the -(B-Y) waveform
Group
: VIDEO 1
downhill straight.
Subject : TINT
2. Connect the oscilloscope to
pin (5) of P801.
18 NTSC colour 1. Feed the NTSC colour bar
l Using the membrane switch or the remote control
saturation level signal.
button, adjust the difference between the 100% white
Group : VIDEO 1
portion and the red portion to 0.1 3~0.02 Vp-p.
Subject : N-COLOR
2. Connect the oscilloscope to
100% White Red
pin (1) of P801.
24