Focus; Screen (G2); White Balance Adjustments - Sony TRINITRON KV-36FS10 Service Manual

KV-32FS10/32FV15/32XBR250/34FV10/34FV15/34FV15C/34FX250C/34FV15K
34FV15T/36FS10/36FV15/36XBR250/38FX250/38FX250C/38FX250T/38FV15K

3-3. FOCUS

1. Input Monoscope signal.
2. Set user controls to normal.
3. Set Video mode to STANDARD.
4. Set the PICTURE to maximum.
5. Adjust FOCUS control for best picture at center
circle.
6. Then receive an entire white signal. Make sure
Magenta Ring is at acceptable level
325 MARK
35
325
35 MARK
CENTER
CIRCLE

3-4. SCREEN (G2)

1. Input signal from the pattern generator.
2. Set the user controls to NORMAL.
3. Attach the G2-Jig to the C Board.
4. Adjust RCUT, GCUT, BCUT, and SBRT in service
mode with an oscilloscope so that voltages on the
red, green, and blue cathodes are 170 + 2 V DC.
5. Observe the screen and adjust SCREEN (G2) VR to
obtain the fairly visible background of dot signal.
6. Push the TEST +JUMP (+ Channel) to cut off the
signal, then the screen is bright or dark. Brightness
of raster must be increased when adjusting.
7. Adjust screen VR until the screen is just cut off, or
scarcely lights up. A signal cannot be seen when the
brightness of the raster is high.
8. Push the JUMP again to release the cut off.
170 + 2 Vdc
GND

3-5. WHITE BALANCE ADJUSTMENTS

NO. Disp.
24 RDRV
25 GDRV
26 BDRV
27 RCUT
28 GCUT
29 BCUT
38 SBRT
1. Set program palette to "STANDARD" and push
"RESET.
2. Input an entire white signal.
3. Set to Service adjustment Mode.
4. Set the PICTURE and BRIGHT to minimum.
5. Adjust with SBRT if necessary.
6. Set RCUT to "14".
7. Select GCUT and BCUT with 1 and 4.
8. Adjust with 3 and 6 for the best white balance.
9. Set the PICTURE and BRIGHT to maximum.
10. Select GDRV and BDRV with 1 and 4.
11. Adjust with 3 and 6 for the best white balance.
12. Write into the memory by pressing
**.
NOTE:
White Balance should be adjusted after Sub Contrast
because RDRV is also used in Sub Contrast adjustment.
(See page 29)
— 20 —
pedestal
Item All Models
Red Drive 31
Green Drive 31
Blue Drive 31
Red Cut-off 7
Green Cut-off 7
Blue Cut-off 7
Sub Bright 7
then