Panasonic CT-34WDM60 Service Manual ▷ View online
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5. 1080i adjustment
(1) Input a 1080i.
(2) Enter into service adjustment mode and select "DEF ADJ" in IIC mode.
(3) Press the button "
" on the remote control and receive the built-in 1080i cross-hatch pattern of this unit.
Note: Use 10 key Remocon.
(4) First, match the center of the built-in cross-hatch pattern
(center adjustment)
Select "V/H-POSITION", perform adjustment on the basis
of the specified values, and match the center of the built-in
cross-hatch pattern.
Select "V/H-POSITION", perform adjustment on the basis
of the specified values, and match the center of the built-in
cross-hatch pattern.
*In case of problems with the vertical and/or H-SIZE,
select "V/H-SIZE" and adjust.
select "V/H-SIZE" and adjust.
(5) Adjust the vertical lines.
When the vertical lines of the built-in cross-hatch pattern
are bow-shaped or show parallelogram distortion, select
"SIDE-PCC", "H-PARALLEL", and adjust so that the dis-
torted vertical lines become vertical to the horizontal lines.
are bow-shaped or show parallelogram distortion, select
"SIDE-PCC", "H-PARALLEL", and adjust so that the dis-
torted vertical lines become vertical to the horizontal lines.
(6) Adjust the horizontal lines.
When the interval between two neighboring horizontal
lines of the built-in cross-hatch pattern is not uniform,
select "V-LINEARITY", "V-S CORRECTION", and adjust
for a good balance of the interval between the horizontal
lines.
lines of the built-in cross-hatch pattern is not uniform,
select "V-LINEARITY", "V-S CORRECTION", and adjust
for a good balance of the interval between the horizontal
lines.
*When "V-LINEARITY", "V-S CORRECTION" adjustment
is performed, the horizontal lines of the built-in cross-
hatch pattern are adjusted to the top (bottom), so that the
position of the screen center changes. Accordingly, the
center adjustment must be adjusted again after comple-
tion of the adjustment. (Only V-POSITION, amplitude)
is performed, the horizontal lines of the built-in cross-
hatch pattern are adjusted to the top (bottom), so that the
position of the screen center changes. Accordingly, the
center adjustment must be adjusted again after comple-
tion of the adjustment. (Only V-POSITION, amplitude)
(7) Perform adjustment of the image geometry.
When the geometry of the built-in cross-hatch pattern
shows pincushion distortion or distortion at the top or bot-
tom, select "PCC", "EW-CORNER TOP", or "EW-COR-
NER BOTTOM", and adjust so that the distorted vertical
lines become straight lines.
shows pincushion distortion or distortion at the top or bot-
tom, select "PCC", "EW-CORNER TOP", or "EW-COR-
NER BOTTOM", and adjust so that the distorted vertical
lines become straight lines.
*Adjust so that the adjustment value for "EW-CORNER
TOP" and "EW-CORNER BOTTOM" becomes a value
from 5 to 11.
TOP" and "EW-CORNER BOTTOM" becomes a value
from 5 to 11.
(8) After completion of adjustment, end the service adjustment mode, input a 1080i, and confirm the image.
8
Adjustment methods (specified values)
*"V-POSITION" adjustment method
→
Refer to page 42.
*"H-POSITION" adjustment method
→
Refer to page 40.
*"V-SIZE" adjustment method
→
Refer to page 43.
*"H-SIZE" adjustment method
→
Refer to page 40.
*"SIDE-PCC" adjustment method
→
Refer to page 41.
*"H-PARALLEL" adjustment method
→
Refer to page 41.
*"V-LINEARITY" adjustment method
→
Refer to page 42.
*"V-S CORRECTION" adjustment method
→
Refer to page 44.
*"PCC" adjustment method
→
Refer to page 43.
*"EW-CORNER TOP" adjustment method
→
Refer to page 44.
*"EW-CORNER BOTTOM" adjustment method
→
Refer to
page 44.
' !"#$
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•
"H-POSITION" adjustment
•
"H-SIZE" adjustment
•
When there is a monoscope pattern
→
Press the "
,
" buttons on the remote control and
adjust so that the center of the vertical lines of the built-in
cross-hatch pattern becomes stable at the specified value
of the following table.
cross-hatch pattern becomes stable at the specified value
of the following table.
(mm)
→
Press the "
,
" buttons on the remote control and
adjust so that the position 5 lines to the left from the cen-
ter of the vertical lines of the built-in cross-hatch pattern...
(C) and the position 5 lines to the right from the center...
(D) becomes stable at the specified value of the following
table.
ter of the vertical lines of the built-in cross-hatch pattern...
(C) and the position 5 lines to the right from the center...
(D) becomes stable at the specified value of the following
table.
(mm)
→
Press the "
,
" buttons on the remote control and
adjust so that the left (
α
and the right (
α
’) end of the scale
at the sides of the received monoscope pattern for each
aspect ratio becomes stable at the specified value of the
following table.
aspect ratio becomes stable at the specified value of the
following table.
(Scale)
NTSC FULL WARM
DEF ADJ
H-POSITION
DEF ADJ
H-POSITION
IIC
A
B
NTSC FULL WARM
DEF ADJ
H-SIZE
DEF ADJ
H-SIZE
IIC
C
D
NTSC 4:3 WARM
DEF ADJ
H-SIZE
DEF ADJ
H-SIZE
A
B
NTSC FULL
395
355
1080i
380
330
C
D
NTSC FULL
282
285
1080i
285
275
α=α
’
NTSC FULL
2.5±0.1
NTSC ZOOM
2.5±0.2
NTSC JUST
2.8±0.1
6. Adjustment methods for distortion correction
!"#$
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•
"SIDE-PCC" correction
•
"H-PARALLEL" adjustment
•
"H-LINEARITY" adjustment
→
When the vertical lines of the built-in cross-hatch pattern
show bow-shaped distortion (like the dotted lines in the
figure on the left), use the center of the vertical lines as
figure on the left), use the center of the vertical lines as
reference, press the "
,
" buttons on the remote con-
trol and adjust so that the reference line becomes a
straight line.
straight line.
→
When the lines at the left and right edge have a parallelo-
gram component (like the dotted lines in the figure on the
left), use the center of the vertical lines as reference,
left), use the center of the vertical lines as reference,
press the "
,
" buttons on the remote control and
adjust so that the reference line becomes a vertical line.
→
Press the "
,
" buttons on the remote control and
adjust so that the position 3 lines to the left from the cen-
ter of the vertical lines of the built-in cross-hatch pattern...
(E) and the position 3 lines to the right from the center...
(F) becomes stable at the specified value of the following
table.
ter of the vertical lines of the built-in cross-hatch pattern...
(E) and the position 3 lines to the right from the center...
(F) becomes stable at the specified value of the following
table.
F - E = 2 ± 5 (mm)
NTSC FULL WARM
DEF ADJ
SIDE-PCC
DEF ADJ
SIDE-PCC
IIC
NTSC FULL WARM
DEF ADJ
H-PARALLEL
DEF ADJ
H-PARALLEL
IIC
NTSC FULL WARM
DEF ADJ
H-LINEARITY
DEF ADJ
H-LINEARITY
IIC
E
F
( !"#$
- 42 -
•
"V-POSITION" adjustment
•
"TRAPEZOID" adjustment
•
"V-LINEARITY" adjustment
→
Press the "
,
" buttons on the remote control and
adjust so that the center of the horizontal lines of the built-
in cross-hatch pattern becomes stable at the specified
value of the following table.
in cross-hatch pattern becomes stable at the specified
value of the following table.
(mm)
→
When the vertical lines of the built-in cross-hatch pattern
show trapezoidal distortion (refer to the dotted lines in the
figure on the left), use the vertical lines on the outside as
figure on the left), use the vertical lines on the outside as
reference, press the "
,
" buttons on the remote con-
trol and adjust so that the reference line becomes a verti-
cal line.
cal line.
→
Press the "
,
" buttons on the remote control and
adjust so that the line interval between adjacent horizontal
lines in the upper half and in the lower half of the built-in
cross-hatch pattern becomes uniform (I = J).
lines in the upper half and in the lower half of the built-in
cross-hatch pattern becomes uniform (I = J).
*When the "V-LINEARITY" is adjusted, also adjust the "V-
S CORRECTION" at the same time.
S CORRECTION" at the same time.
*Refer to page 44 for the "V-S CORRECTION" adjust-
ment.
ment.
NTSC FULL WARM
DEF ADJ
V-POSITION
DEF ADJ
V-POSITION
IIC
G
H
NTSC FULL WARM
DEF ADJ
TRAPEZOID
DEF ADJ
TRAPEZOID
IIC
NTSC FULL WARM
DEF ADJ
V-LINEARITY
DEF ADJ
V-LINEARITY
IIC
I
J
G
H
NTSC FULL
217
205
1080i
205
200
!"#$
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