Picture Quality Adjustment - Sony Trinitron KV-XR29M80 Service Manual

KV-XR29M80
RM-W104

3-3. PICTURE QUALITY ADJUSTMENT

SUB COLOR ADJUSTMENT
1. Select Video.
2. Input PAL 100% Color Bar.
3. Set to following condition:
PICTURE 100%,COLOR 50%, BRIGHTNESS 50%,
HUE Center, SHP 50%.
4. Set the PICT 06 WTS to 00h.
5. Connect an oscilloscope to pin 2 (B OUTPUT) of
CN004 A Board.
6. Set the service mode and select SADJ 04 "SCOL"
with and of the commander then adjust to
1 4
VB2=VB3=VB4 with
data as below :
Add 2 steps to SCOL (PAL) - 25" and 29".
Add 6 steps to SCOL (PAL) - 34".
7. Copy "SCOL 50 PAL(Video)"data to "SCOL 50
SECAM(Video)"
8. Copy "SCOL 50 PAL(Video)" and "SCOL 50 SECAM
(Video)" data to "SCOL 50 PAL(TV)" and "SCOL 50
SECAM(TV)" table.
9. Input NTSC 75% Color Bar to TV set and repeat item
3-5.
10. Set the service mode and select SADJ 04 "SCOL"
with and of the commander then adjust to
1 4
VB1 = VB4. Write the data as below :
Add 5 steps to SCOL (NTSC) - 25"
Add 3 steps to SCOL (NTSC) - 29".
Add 6 steps to SCOL (NTSC) - 34".
11. Copy "SCOL 60 NTSC(Video)"data to "SCOL 60
NTSC(TV)"
12. Copy "SCOL 50 PAL"data to "SCOL 50 YUV" table
and "SCOL 60 NTSC" data to "SCOL 60 YUV".
13. Set WTS back to original data.
VB1
VB2 = VB3 = VB4(For PAL sub color adjustment)
VB1 = VB4(For NTSC sub color adjustment)(Difference is
within 70mV)
SUB HUE ADJUSTMENT
1. Select Video.
2. Input NTSC 3.58 Color Bar to TV set.
3. Set to following condition:
PICTURE 100%,COLOR 50%, BRIGHTNESS 50%,
HUE Center, SHP 50%.
4. Connect an oscilloscope to pin 2 (B output) of CN004.
5. Set the service mode and select SADJ 01 "SHUE"
with and of the commander then adjust to
1 4
VB1=VB2=VB3=VB4 with
6. Then press [MUTING] t
7. Select TV channel with NTSC 3.58 and repeat item 3-6.
8. For single system models with NTSC 4.43, select TV
channel with NTSC 4.43 and repeat 3-6.
and (For PAL), write the
3 6
VB4
VB2 VB3
and .
3 6
to write the data.
-
VB1
VB1 = VB2 = VB3 = VB4
The highest level of VB1, VB2, VB3, VB4 must be
aligned at the same time.
The ideal difference between VB2 and VB3 is within ±
80mV.
Sub Hue Adjustment For YUV input
1. Select YUV input.
2. Input NTSC 3.58 Color Bar Into YUV mode.
3. Connect an oscilloscope to pin 1 (B output) of CN004.
Set the service mode and select YC 13 "TINT" with
and of the commander then adjust to
4
VB1=VB2=VB3=VB4 with
5. Then press [MUTING] t
VB1
VB1 = VB2 = VB3 = VB4
The highest level of VB1, VB2, VB3, VB4 must be
aligned at the same time.
The ideal difference between VB2 and VB3 is within ±
80mV.
PMAX/CONTRAST ADJUSTMENT
Picture Mode: Personal
1. Select Video mode.
2. i)Input PAL Color Bar toTV set. (Other)
ii)Input NTSC 75% Color Bar (NTSC model).
3. Set the following condition:
PICTURE 100%, COLOR 0%,BRIGHTNESS 50%
4. Connect oscilloscope to pin 4 (R Output) of CN004,
5. Set to Service Mode PWL PICT 03 to 00h and WHBL
017 BLBG to 01h.
6. Select SADJ 00 "PMAX" with
commander then adjust VR within spec with
34"
VR
29"
25"
– 30 –
VB3
VB4
80mV
VB2
and .
3 6
to write the data.
-
VB3
VB4
80mV
VB2
and of the
1 4
3
VR
Black
PAL NTSC
2.20±
1.85±0.03Vpp
0.03Vpp
1.90±
1.57±0.03Vpp
0.03Vpp
2.20±
1.85±0.03Vpp
0.03Vpp
1
and .
6