Changhong Electric PF2939, Service Manual, Page: 41 / 47

SERVICE MANUAL
(Continued)
39
WPR Set to optimum Red gun drive voltage
WPG Set to optimum Green gun drive voltage
WPB Set to optimum Blue gun drive voltage
YDFP 7 YC delay
TOP Set to optimum Video automatic gain control
VOL 31 UOC volume control
9860 100
IFFS 1 Picture intermediate frequency
HDOL 10 Cathode drive voltage
AGC 3 AGC linearity
VG2B 32
FEAT 57 Options
FEA1 56 Options
TRE1 100 Treble Max.
TRE2 50 Treble Mid.
BAS1 60 Bass Max.
BAS2 30 Bass Mid.
1CON 80 Contrast in Normal mode
1BRI 50 Brightness in Normal mode
1COL 50 Color in Normal mode
1SHP 50 Sharpness in Normal mode
2CON 100 Contrast in Movie mode
2BRI 40 Brightness in Movie mode
2COL 60 Color in Movie mode
2SHP 60 Sharpness in Movie mode
3CON 100 Contrast in Sports mode
3BRI 50 Brightness in Sports mode
3COL 40 Color in Sports mode
3SHP 40 Sharpness in Sports mode
HD-B 1 Cathode drive voltage under blue back
PWL 36
IFOF Set to optimum IF offset (interference between sound and picture
）
VENH 1 Vertical enhancement
（
crisping
）
COR 3 Coring
VOLA 70 Volume linearity
VOLB 80 Volume linearity
VOLC 90 Volume linearity
VOLD 100 Volume linearity