ViewSonic PJL1035 Service Manual - Page 13

ViewSonic PJL1035 - LCD Projector SXGA Manual

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PJL1035-2 4 - 3 White balance adjustment Preparations for adjustment 4-3-1 Flicker adjustment. Refer to the attached drawing (Fig.4-4). 1. Use the XGA VESA(60) timing signal to input a 0.35Vp-p R primary color signal for every other line. 2. Use DAC_P - V.COM - R in the adjustment menu to adjust until flicker is minimum on a whole image. 3. Use the XGA VESA(60) timing signal to input a 0.35Vp-p G primary color signal for every other line. 4. Use DAC_P - V.COM - G in the adjustment menu to adjust until flicker is minimum on a whole image. 5. Use the XGA VESA(60) timing signal to input a 0.35Vp-p B primary color signal for every other line. 6. Use DAC_P - V.COM - B in the adjustment menu to adjust until flicker is minimum on a whole image. R or G or B Adjust it so that flicker is the lest. Black Fig.4-4 Test pattern for the flicker adjustment 4-3-2 Adjustment of color uniformity 1. Input gray pattern at 0.35Vp-p with a timing signal of XGA VESA(60). 2. Set C.UNIFORMITY - SWITCH in the adjustment menu to OFF. 3. Check the color unevenness of the original image. 4. Continue this adjustment unless color uniformity is good. 5. Set C.UNIFORMITY - SWITCH in the adjustment menu to ON. 6. Adjust following parameters to make better color balance with same input signal. a. Adjust "C. UNIFORMITY - H - R -RP" so that color balance of left and right side is best by visual check. This is control correction wave for Horizontal Saw. b.Adjust "C. UNIFORMITY - H - R -PB" so that color balance of center and side is best by visual check. This is control correction wave for Horizontal Parabola. c. Adjust "C. UNIFORMITY - H - B -RP" so that color balance of left and right side is best by visual check. This is control correction wave for Horizontal Saw. d. Adjust "C. UNIFORMITY - H - B -PB" so that color balance of center and side is best by visual check. This is control correction wave for Horizontal Parabola. e. Adjust "C. UNIFORMITY.- V - B -RP" so that color balance of top and bottom is best by visual check. This is control correction wave for Vertical Saw. "C. UNIFORMITY - H - R -RP" : horizontal correction for Fl horizontal Saw "C. UNIFORMITY - H - R -PB" : horizontal correction for R horizontal Parabola "C. UNIFORMITY - H - B -RP" : horizontal correction for B horizontal Saw "C. UNIFORMITY - H - B -PR" : horizontal correction for B horizontal Parabola "C. UNIFORMITY - V - B -RP" : vertical correction for B vertical Saw. ViewSonic Corporation - 10 - Confidential - Do Not Copy

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PJ
L1035-2
4
-
3
White
balance
adjustment
Preparations
for
adjustment
4-3-1
Flicker
adjustment.
Refer
to
the
attached
drawing
(Fig.4-4).
1.
Use
the
XGA
VESA(60)
timing
signal
to
input
a
0.35Vp-p
R
primary
color
signal
for
every
other
line.
2.
Use
DAC_P
-
V.COM
-
R
in
the
adjustment
menu
to
adjust
until
flicker
is
minimum
on
a
whole
image.
3.
Use
the
XGA
VESA(60)
timing
signal
to
input
a
0.35Vp-p
G
primary
color
signal
for
every
other
line.
R
or
G
or
B
Black
4.
Use
DAC_P
-
V.COM
-
G
in
the
adjustment
menu
to
adjust
until
flicker
is
minimum
on
a
whole
image.
5.
Use
the
XGA
VESA(60)
timing
signal
to
input
a
0.35Vp-p
B
primary
color
signal
for
every
other
line.
6.
Use
DAC_P
-
V.COM
-
B
in
the
adjustment
menu
to
adjust
until
flicker
is
minimum
on
a
whole
image.
Adjust
it
so
that
flicker
is
the
lest.
Fig.4-4
Test
pattern
for
the
flicker
adjustment
4-3-2
Adjustment
of
color
uniformity
1.
Input
gray
pattern
at
0.35Vp-p
with
a
timing
signal
of
XGA
VESA(60).
2.
Set
C.UNIFORMITY
-
SWITCH
in
the
adjustment
menu
to
OFF.
3.
Check
the
color
unevenness
of
the
original
image.
4.
Continue
this
adjustment
unless
color
uniformity
is
good.
5.
Set
C.UNIFORMITY
-
SWITCH
in
the
adjustment
menu
to
ON.
6.
Adjust
following
parameters
to
make
better
color
balance
with
same
input
signal.
a.
Adjust
"C.
UNIFORMITY
-
H
-
R
-RP"
so
that
color
balance
of
left
and
right
side
is
best
by
visual
check.
This
is
control
correction
wave
for
Horizontal
Saw.
b.Adjust
"C.
UNIFORMITY
-
H
-
R
-PB"
so
that
color
balance
of
center
and
side
is
best
by
visual
check.
This
is
control
correction
wave
for
Horizontal
Parabola.
c.
Adjust
"C.
UNIFORMITY
-
H
-
B
-RP"
so
that
color
balance
of
left
and
right
side
is
best
by
visual
check.
This
is
control
correction
wave
for
Horizontal
Saw.
d.
Adjust
"C.
UNIFORMITY
-
H
-
B
-PB"
so
that
color
balance
of
center
and
side
is
best
by
visual
check.
This
is
control
correction
wave
for
Horizontal
Parabola.
e.
Adjust
"C.
UNIFORMITY.-
V
-
B
-RP"
so
that
color
balance
of
top
and
bottom
is
best
by
visual
check.
This
is
control
correction
wave
for
Vertical
Saw.
"C.
UNIFORMITY
-
H
-
R
-RP"
:
horizontal
correction
for
Fl
horizontal
Saw
"C.
UNIFORMITY
-
H
-
R
-PB"
:
horizontal
correction
for
R
horizontal
Parabola
"C.
UNIFORMITY
-
H
-
B
-RP"
:
horizontal
correction
for
B
horizontal
Saw
"C.
UNIFORMITY
-
H
-
B
-PR"
:
horizontal
correction
for
B
horizontal
Parabola
"C.
UNIFORMITY
-
V
-
B
-RP"
:
vertical
correction
for
B
vertical
Saw.
-
10
—
ViewSonic
Corporation
Confidential
-
Do
Not
Copy