Sharp XG-V10XU - Conference Series XGA LCD Projector, Service Manual

Page: 33 / 182

33
XG-V10XU
No. Adjusting point Adjusting conditions Adjusting procedure
17 Video input
panel signal
amplitude
adjustment 1. Feed the NTSC 10-step
signal.
2. Select the following group
and subjects.
Group : VIDEO2
Subject : R1-GAIN
B1-GAIN
3. Connect the oscilloscope to
pin (1) (for R) of P1001 and
pin (3) (for G) of P1001.
4. Similarly connect the oscil-
loscope to the following for
the B color.
Pin (5) of P1001 for B
Pin (3) of P1001 for G
»
Select R1-GAIN. Adjust the setting so that the R
signal amplitude and the G signal amplitude be
the same.
»
Do the same for the B color.
18 Video white
balance adjust-
ment 1. Feed the NTSC
monoscope pattern signal.
2. Select the following group
and subjects.
Group : VIDEO2
Subject : R1-BLK
B1-BLK
»
Using the set's control switch or the remote
controller's button, adjust the setting so that the
white balance be the same as on the monitor
screen.
19 DVD contrast
adjustment 1. Feed the 100% color bar
signal of the 480I compo-
nent signal to the G (Y) in-
put terminal on the BNC
socket.
2. Select the following group
and subject.
Group : DVD
Subject : CONTRAST
»
Using the set's control switch or the remote
controller's button, adjust the setting so that the
100% white signal has some bit dropouts.
20 DVD tint adjust-
ment 1. Feed the 100% color bar
signal of the 480I compo-
nent signal to the Y, Pb and
Pr input terminals on the
BNC socket. For the Y sig-
nal, feed the sync signal
only.
2. Select the following group
and subject.
Group : DVD
Subject : TINT
3. Connect the oscilloscope to
pin (2) of P801.
»
Using the set's control switch or the remote
controller’s button, adjust the setting so that the
(B–Y) waveform runs straight uphill.
With the above adjustment completed, get the
setting 3 points down.