Alignment Procedures - Tatung Vibrant VM77S Service Manual

4-2 Alignment Procedures

4-2-1 High Voltage Adjustment
CONDITION
Press and buttons simultaneously when switching the power "On".
1 2
Display image : No video (68.68kHz Mode)
PROCEDURE
Connect DC meter to TP002 and adjust HV (icon)
Obtain a DC voltage of -152.2 ± 0.2 V DC (Sampo FBT) or -153 ± 0.2V DC (LCE FBT) for CPT CRT
M41AGE93X46 (TCO) or M41AGE83X46 (MPRII) .
4-2-2 Screen and White Balance Adjustment
CONDITION
Press and buttons simultaneously when switching the power "On".
1 2
Display image : No video (68.68kHZ Mode)
PROCEDURE
1 Raster color setting
1-a. Set Brightness max. to 77 (OSD cursor) and 563 ± 5 at G2.
1-b Adjust R and B cutoff to min.
1-c Adjust G cutoff to about 0.45FL
1-d Adjust B cutoff to get y=280 ± 5, R cutoff to get x=280 ± 5 and Y=0.65 ± 0.05 FL.
1-e Adjust Brightness cutoff to raster 0.01-0.02 FL.
CONDITION
Display image : 50 mm x 50 mm white block pattern
PROCEDURE
0
2 6500 K color temperature setting
2-a. Set Brightness to cutoff and Contrast to maximum.
2-b Move cursor on OSD to choose color temperature icon.
2-c. With green block pattern, adjust G gain to get Y about 32FL.
2-d Adjust R.B. gain to get x=313 ± 5, y=329 ± 5; and Y=43 ± 0.5FL
0
3 9300 K color temperature setting
3-a. Set Brightness to cutoff and Contrast to maximum.
3-b Move cursor on OSD to choose color temperature icon.
3-c. With green block pattern, adjust G gain to get Y about 32FL.
3-d Adjust R.B. gain to get x=283±5, y=297±5; and Y=43±0.5FL
VM77S