Specific operation: use remote controller
- Press “MUTE”--> “CALL” --> “-\--“ --> “CALL” -->UTE” buttons in sequence to enter into factory mode.
- Press [Program+] / [Program-] to select items and press [VOLUME+] / [VOLUME-] key , to make data adjustment of corresponding factory menus.
- Press “EXIT” key to exit factory mode.
Adjustment steps：
a) Adjust VSL, to the center horizontal line just appears from half bottom shadow .
b) Adjust VAM, to get 92% of vertical picture contents would be displayed on CRT .
c) Adjust VSH, the center horizontal line corresponds to CRT vertical center.
d) Adjust SCL, to the linearity of P card field is in proper condition.
e) Adjust HSH, to get the picture horizontal center correspond to CRT horizontal center.
Receive NTSC signal and repeat above adjustment.
AGC Adjustment
Receive 60dBμ (1mV) VH color bar pattern signal.
Select TOP item.
Adjust value, to noise reduce gradually and just disappeared point.
CRT cut off and white balance adjustment
a) CRT cut off adjustment
1. Select item VG2B, then adjust value to 32.
2. PRESS “0” key , when the screen shows”VG2” adjust the SCREEN control on Fly back transformer [LOT] to make the screen show alternating f lashing characters of “INSIDE HIGH INSIDE LOW”.
b) White balance adjustment
1. Receive a Black and White pattern.
2. Adjust WRP , WRG , WRB items to get color temperature 9300K ±3 JND.
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