akira CT-25TW9AN, Руководство по обслуживанию

Страница: 22 / 32

22
Model No: CT-25TW9A
N
Version 1.0
4. Complete machine general adjustment.
a. Go to factory mode before warm up line.
Method: Press key CLOCK, P.M., , TV SET will go to factory mode. Press key 0-9
to entering factory menu. Select the item by “PROG+” and “PROG-“ keys. Adjust by
“VOL+” and “VOL-” Keys. Press “ + ” key to exit factory mode.
b. Focus adjustment.
i. Receive monoscope pattern.
ii. Set TV to work in dynamic status.
iii. Adjust the focus knob of FBT to get the clearest picture.
c. Screen Voltage Adjustment (KEY 0)
i. Set TV at “TV” “STANDARD” mode, no signal input.
ii. Press key CLOCK, P.M. in turn to entering factory mode.
iii. Press 0 key.
iv. Adjust the screen knob of FBT to get a horizontal faintness beam line.
v. Press other keys to go to the normal work status.
d. Vertical size and pin cushion adjustment (KEY 2)
i. Receive 50HZ cross hatch pattern. Set TV standard status, adjust 5VSL to
obtain half of the cross hatch, adjust 5SCL to obtain picture’s vertical pin
cushion a good status, adjust 5VSH to obtain picture’s vertical center at the
center of CRT screen in factory mode.
ii. Receive 50HZ monoscope pattern. Set TV standard status,. Adjust 5VAM to
obtain picture’s vertical redisplay ratio more than 90% in factory mode.
Vertical slope 50Hz
5VSL
Vertical amplitude 50Hz 5VAM
S-correction 50Hz 5SCL
Vertical shift 50Hz 5VSH
iii. Receive 60HZ cross hatch pattern. Set TV standard status. Adjust 6VSL to
obtain half of the cross hatch, adjust 6SCL to obtain picture’s vertical pin
cushion a good status. Adjust 6VSH to obtain picture’s vertical center at the
center of CRT screen in factory mode.
iv. Receive 60HZ monoscope pattern. Set TV standard status. Adjust 6VAM to
obtain picture’s vertical redisplay ratio more than 90% in factory mode.
Vertical slop 60Hz
6VSL
Vertical amplitude 60Hz 6VAM
S-correction 60Hz 6SCL
Vertical shift 60Hz 6VSH
v. If necessary, adjust Horizontal Center and EW again.
vi. Receive 50HZ RGB or YUV cross hatch pattern. Set TV standard status.
Adjust 5RGH to obtain picture’s vertical center at the center of CRT screen
in factory mode. (OPTION).
vii. Receive 60HZ RGB or YUV cross hatch pattern. Set TV standard status.
Adjust 6RGH to obtain picture’s vertical center at the center of CRT screen
in factory. (OPTION).