Haier HTAF21C, Service Manual

Page: 9 / 19

9
AGC Adjustment
Receive 60dB μ (1mV) VH colour 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 to make the screen show alternating flashing 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 colour temperature 9300K
±
3 JND.
Direct access key Items Description Preset Remark
“1” 5/6HSH Horizontal shift ON A
“2” 5/6VSL Vertical slop 32 A
5/6VAM Vertical amplitude 23 A
5/6SCL S-correction 17 A
5/6VSH Vertical shift 27 A
5/6VOF OSD Vertical offset 37 A
HOF* OSD Horizontal offset 42 A
“3” RED Black level offset R 32 A
GRN Black level offset G 32 A
WPR White point R 30 A
WPG White point G 26 A
WPB White point B 38 A
“4” TOP AGC Take-over point 20 A
VOL Volume 42
9860 Sub-volume of TDA9860/59 18
HDOL Cathode drive level 59
AGC IF AGC speed 1
VG2B VG2 Brightness 42
IFFS 2
“5” Picture preset 1
0CON Listen: Contrast 0 A
0BRI Listen: Brightness 0 A
0COL Listen: Colour 50 A
0SHP Listen: Sharpness 50 A
1CON Soft: Contrast 45 A
1BRI Soft: Brightness 45 A