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 ASPECT mode again in NTSC-60Hz, respectively. In this case, only NTSC-60Hz each ASPECT mode is corrected. (5) Deflection adjustment should surely carry out by setting ASPECT mode to FULL. Since a deflection setup of those other than FULL mode is carried out by SERVICE MENU 8. IP setting, adjustment in ASPECT modes other than FULL mode is unnecessary. Item V. POSITION Measuring instrument Signal generator Remote control unit Test point Adjustment part [4.DEF] 2. V-SHIFT (1) (2) (3) (4) (5) Description Select the ASPECT mode to FULL. Receive the circle pattern signal. Select 4.DEF. Set the initial setting value of < 2. V-SHIFT >. Adjust < 2. V-SHIFT > to become A=B as shown in the figure. (6) Press the [MENU] key to memorize the adjustment value.
A
B
V. SIZE
Signal generator Remote control unit
[4.DEF] 3. V-SIZE
(1) (2) (3) (4)
Receive the crosshatch signal. Select 4.DEF. Set the initial setting value of < 3. V-SIZE >. Adjust < 3. V-SIZE > to become the vertical screen size given below table. (5) Press the [MENU] key to memorize the adjustment value.
