Blue-Only White Balance Adjustment; Sub Bright, Sub Contrast Adjustment (15 K) - Sony TRINITRON PVM-14L3 Service Manual

2-12. Blue-only White Balance
Adjustment
1. Turn ON the blue-only of the user controller SW. (To
set blue-only.)
2. Input all-white (COMPOSITE signal without burst).
The all-white signal luminance shall be 100 IRE.
CONT : 80 %
BRT : 50%
3. Select COL TEMP/BAL.
. Select 6500 K.
5. Adjust to the standard values with
500K B/O<RED»>| and
6. Select COL TEMP/BAL.
7. Select 9300K.
8. Adjust to the standard values with
or
9, Adjust the all-white signal Juminance, and check that
the white balance is satisfactory when the luminance
of the screen is 8NIT.
PYM-14L9/14.420L4
2-13. SUB BRIGHT, SUB CONTRAST
Adjustment (15 K)
1, Input the 15 K monoscope signal to the COMPO-
NENT IN connector.
Pot the unit into the service mode.
Select WHITE BALANCE.
Select SUB BRIGHT.
Set as follows from the operation panel:
CONTRAST : 0 (MIN)
BRIGHT : 0 (center)
6, Adjust [SUB-BRIGHT} in the service mode so that
the 20-tone gray scale will be as follows :
0 and 5 IRE => CUT-OFF
10 IRE => Slight glow
Set CONTRAST VR on the operation panel to 80 %.
Turn off the CONTRAST display.
Select SUB CONTRAST.
Input the window signal whose size is less than what is.
shown below,
vey
een
s
11.4 psec
26 psec
Fig. 2-30
11, Adjust luminance to the standard value with SUB-
CONTRAST.
Standard value :
a
170 cd/m? 150 cd/m?
12. Select UNDER SCAN, (4: 3 UNDER SCAN)
13. Select SUB CONTRAST and adjust luminance to the
standard value that is specified in step 11, with SUB-
CONTRAST.
14. Select 16 : 9. (16 : 9 UNDER SCAN)
15, Select SUB CONTRAST and adjust luminance to the
standard value that is specified in step 11, with SUB-
CONTRAST.
16. Select UNDER SCAN. (16 : 9 NORMAL)
17. Select SUB CONTRAST and adjust luminance to the
standard value that is specified in step 11, with SUB-
CONTRAST.
18, Return to the 4: 3 NORMAL screen.
19, Turn the POWER OFF.
2-21