Toshiba 20A3E Service Manual page 13

Table of Contents

Advertisement

6 SUB COLOUR NTSC (COLC)
(Measuring point)
Q501 #22 (B-OUT)
(Adjusting signal)
Sub Bright (NTSC) signal
(Adjusting method)
1) Set BUS date 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 colour bar.
4) Adjust the amplitude of colour bar.
(p-p value of the upper half)
7 WHITE BALANCE ADJUSTMENT
(Adjusting method)
1) Set user control to the standard 1
2) BUS date 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
MUTE
BRIGHT
4) Change SCREEN VR to set it so that one of the line R, G and B will light slightely
5) Change CUT-OFF data to set it so that each one of R, G and B will light slighty (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): 30FL
* Dark area (Low light area):
SPEC
Hight-light area:
Low-lignt area:
8 SUB COLOUR CENTER (COLS) (SECAM) (For models M, MJ, R, TR only)
(Measuring point)
Q501 #22 (B-OUT)
(Adjusting signal)
SECAM COLOUR BAR
(Adjusting method)
Adjusting the amplitude of B-Y (Mute the picture in adjustment)
Spec:
1.75±0.2V
*Note: For Thailand model use Video input
Value
4FL
11500°K+0.0075uv
10500°K+0.0150uv
Value
– 13 –
1.4±0.2 Vpp

Advertisement

Table of Contents
loading

Table of Contents