Picture Quality Adjustments; Deflection Adjustment - Sony TRINITRON KV-HW21M80 Service Manual

KV-HW21M80/HW21M83/HW21M80J
3-3.

PICTURE QUALITY ADJUSTMENTS

PMX/CONTRAST ADJUSTMENT
1. Select Video Mode.
2. Input PAL CB to TV set.
3. Set PICT 03 "PWL" to 00h and WHBL 21 "BLBG" to 01h.
4. Set the following condition:
PICTURE 100%, COLOR 0%, BRIGHTNESS 50%.
5. Connect an oscilloscope to pin 4 (R output) of CN004.
6. Set to Service Mode "PWL" to 00h, "BLBG" to 01h.
7. Select SADJ00 "PMX" with
commander then adjust VR within spec with
1.46 ± 0.03 Vp-p = without VM models
1.65 ± 0.03 Vp-p = with VM models
8. Then press [MUTING] t
9. Set "PWL" and "BLBG" back to initial data repectively.
(PWL: 01h and BLGG: 00h)
SUB COLOR ADJUSTMENT
1. Select Video and set Picture mode.
2. Input PAL 100% CB to TV set.
3. Set PICT 06 "WTS" to 00h.
4. Set the following condition:
PICTURE 100%, COLOR 50%, BRIGHTNESS 50%.
5. Connect an oscilloscope to pin 2 (B output) of CN004.
6. Select to Service Mode and adjust SADJ04 "SCOL"
with and of commander then adjust to
1 4
VB2 = VB3 = VB4 with
VB1
VB2 = VB3 = VB4
(Difference is within 70mV)
7. Then press [MUTING] t
8. Set "WTS" back to original data.
RM-W101
and of the
1 4
3
VR
Black
to write the data
-
and .
3 6
VB2 VB3 VB4
to write the data.
-
SUB HUE ADJUSTMENT
1. Select Video.
2. Input a NTSC 3.58 Color Bar to TV set.
3. Set the following condition:
PICTURE 100%, COLOR 50%, BRIGHTNESS 50%
4. Connect an oscilloscope to pin 2 (B output) of CN004.
5. Set to Service and adjust SADJ01 "SHUE" with
and of commander then adjust to VB1 = VB2 =
4
VB3 = VB4 with
6. Then press [MUTING] t
and .
6
The highest level of VB1, VB2, VB3, VB4 must be
aligned at the same time.
The ideal difference between VB2 and VB3 is within
±110mV.
For single system with NTSC 4.43 select TV channel
with NTSC 4.43 and repeat 4 t 6.
3-4.

DEFLECTION ADJUSTMENT

H-TRAPEZOID ADJUSTMENT
1. Receive cross hatch/dotsignal.
2. Adjust on to make H-Trapezoid distortion best.
NORMAL MODE (50Hz)
1. Set to Service Mode.
2. Input SPCB Signal (Select Video Mode for USA).
3. Using the
Mode).
4. Rasie/lower data using the
the following items:-
GEOM : 000
001
002
003
004
005
006
007
008
009
010
011
012
013
014
015
016
017
018
5. Write into memory by pressing [MUTING] then
the remote commander.
– 28 –
and .
3 6
to write the data.
-
VB1
VB3 VB4
VB2
and button select GEO (Service
1 4
and
3 6
HPOS Horizontal Shift (HS)
HPAR Horizontal Parallelogram
HBOW Horizontal Bow
VLIN Vertical Linearity
VSCR Vertical Scroll
HSIZ EW Width (EW)
EWPW EW Parabola/Width (PW)
UCOP EW Upper Corner Parabola
LCOP EW Lower Corner Parabola
EWTZ EW Trapezium
VSLP Vertical Slope (VS)
VSIZ Vertical Amplitude
SCOR S-Correction (SC)
VPOS Vertical Shift (VSH)
HBL RGB Blanking Mode
WBF Timing of Wide Blanking (WBF)
WBR Timing of Wide Blanking (WBR)
SBL Service Blanking
COPY Copy the GEO data to all
50/60Hz NVM area
1
buttons adjust
on
-