1-38 (No.YA010)
4.8.8
DEFLECTION CIRCUIT
(1) The deflection adjustment using the remote control unit is made on the basis of the initial setting values. The setting values which
adjust the screen to the optimum condition can be different from the initial setting values.
(2) There are several kinds of adjustment modes with the vertical frequency (Vertical frequency : PAL-50Hz, NTSC-60Hz).
a) At first, the adjustment in PAL-50Hz, 900i mode should be done. Then the adjustment for the other vertical frequency mode
is corrected in the respective value at the same time.
b) However, if the picture quality has not been optimized, adjust each vertical frequency mode again, respectively.
c) If adjustment in PAL-50Hz each vertical frequency mode has been done in very high accuracy, the adjustment for the same
vertical frequency mode in NTSC-60Hz mode is corrected in the respective value. Adjustment is completed at this time.
d) If the picture quality in NTSC-60Hz has not been optimized, adjust each zoom mode again in NTSC-60Hz, respectively. In
this case, only NTSC-60Hz each zoom mode is corrected.
(3) Deflection adjustment should surely carry out by setting zoom mode to FULL. Since a deflection setup of those other than FULL
mode is carried out by SERVICE MENU 8. IP setting, adjustment in zoom modes other than FULL mode is unnecessary.
Item
Measuring
instrument
Test point
Adjustment part
Description
V. POSITION
Signal
generator
Remote
control unit
[4. DEF]
2. V-SHIFT
(1) Select the ZOOM mode to FULL.
(2) Receive the circle pattern signal.
(3) Select 4. DEF.
(4) Set the initial setting value of < 2. V-SHIFT >.
(5) Adjust < 2. V-SHIFT > to become A=B as shown in
the figure.
(6) Press the [MENU] key to memorize the adjustment
value.
V. SIZE
Signal
generator
Remote
control unit
[4. DEF]
3. V-SIZE
(1) Receive the crosshatch signal.
(2) Select 4. DEF.
(3) Set the initial setting value of < 3. V-SIZE >.
(4) Adjust < 3. V-SIZE > to become the vertical screen
size given below table.
(5) Press the [MENU] key to memorize the adjustment
value.
A
B
Picture
size
100%
Screen
size
900i
Setting position
1125i
1350i
602p
SCREEN TOP
92%
92%
92%
92%
SCREEN BOTTOM
92%
92%
92%
92%