Toshiba 21AZ5VX, Service Manual

Page: 13 / 38

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GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
5 SUB COLOUR NTSC (COLC)
(Measuring point) Q501 #22 (B-OUT)
(Adjusting signal) Sub Bright (NTSC) signal
(Adjusting method)
1) Set BUS data of Q501 to the same value as that SUB TINT adjustment.
2) Set user control to the standard 1.
3) Change COLC data to adjust the 6th peak amplitude of rainbow color bar
Adjust the amplitude of color bar (p-p value of the
upper half)
1.4
±
0.2V (p-p)
6 WHITE BALANCE ADJUSTMENT
(Adjusting method)
1) Set user control to the standard 1.
2) BUS data of Q501
GDRV
→
Initial value (40H)
BDRV
→
Initial value (40H)
RCUT
→
Initial value (20H)
GCUT
→
Initial value (20H)
BCUT
→
Initial value (20H)
3) Set the mode to the one horizontal line mode.
4) Change SCREEN VR to set it so that one of the line R, G and B will light slightly.
5) Change CUT-OFF data to set it so that each one of R, G and B will light slightly (for about white).
6) Release the H. Line mode.
7) Change B/G drive data and R/G/B CUT-OFF data to adjust white balance in bright area and dark area.
* Bright area (High-light area): 103cd/m
2
* Dark area (Low-light area): 13cd/m
2
SPEC High-light area: 11500
°
K+0.0075uv
Low-light area: 10500
°
K+0.0105uv
7 SUB COLOUR CENTER (COLS) (SECAM)
(Measuring point) Q501 #22 (B-OUT)
(Adjusting signal) SECAM COLOUR BAR
(Adjusting method) Adjusting the amplitude of B-Y (Mute the picture in adjustment)
Adjust the amplitude of color bar (p-p value of the
upper half)
SPEC: 1.9
±
0.2V
* Note: This ITEM Adjust after (COLC)
Value
CA100 DATA
x=260 y=271
x=260 y=271
Value