Read Sony KV-36FS12 Service Manual online
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18 —
KV-36FS12/36FS16/36FV16/36FV26
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 at 325 Mark for best center/corner focus balance.
6. Receive an entire white signal. Make sure Magenta Ring is
at an acceptable level.
Focus
Screen (G2)
35
325
35 MARK
325 MARK
CENTER
CIRCLE
3-4. SCREEN (G2)
1. Input dot pattern from the pattern generator.
2. Set the user controls to NORMAL.
3. Attach the G2-Jig to the C Board.
5. Adjust RCUT, GCUT, BCUT, and SBRT in service mode
with an oscilloscope so that voltages on the red, green, and
blue cathodes are 170 ± 2.0Vdc.
blue cathodes are 170 ± 2.0Vdc.
5. Observe the screen and adjust SCREEN (G2) VR to obtain
the faintly visible background of dot signal.
6. Push the TEST + JUMP (+ Channel) to cut off the signal.
The screen should be bright or dark. Brightness of raster
must be increased when adjusting.
must be increased when adjusting.
7. Adjust screen VR until the screen is slightly cut off, or
scarcely lights up. A signal cannot be seen when the
brightness of the raster is high.
brightness of the raster is high.
8. Push the JUMP again to release the cut off.
pedestal
GND
170Vdc
170 + 2.0 Vdc
3-5. WHITE BALANCE ADJUSTMENTS
NO.
24
25
26
27
28
29
38
Disp.
RDRV
GDRV
BDRV
RCUT
GCUT
BCUT
SBRT
Item
Red Drive
Green Drive
Blue Drive
Red Cut-off
Green Cut-off
Blue Cut-off
Sub Bright
All Models
*
46
37
14:Fix
10
8
8
1. Set program palette to STANDARD and pust 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 and .
8. Adjust with and for the best white balance.
9. Set the PICTURE and BRIGHT to maximum.
10. Select GDRV and BDRV with and .
11. Adjust with 3 and 6 for the best white balance.
12. Write into the memory by pressing
then
.
13. Repeat steps 1-12 for GDR4, BDR4, GCU4 and BCU4
using Video 4 input.
* Use values from Sub Contrast Adjustments
NOTE:
White balance should be adjusted after Sub Contrast
because RDRV is also used in Sub Contrast Adjustment.
(See page 27).
because RDRV is also used in Sub Contrast Adjustment.
(See page 27).
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