Picture Quality Adjustment - Sony TRINITRON KV-XR29M50 Service Manual

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 and write the data
1 4
below:
Add 2 step to SCOL (PAL)-25" & 29".
Add 6 step 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 and write data as
1 4
below:
Add 3 step to SCOL (NTSC)-25" & 29".
Add 6 step 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
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 3-6.
8. Single system models with NTSC 4.43, select TV
channel with NTSC 4.43 and repeat 3-6.
VB4
VB3
and .
3 6
to write the data.
-
VB1
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.
4. 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
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.
PMX/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 Servic 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"
7. Copy PMAX data to TV models.
8. Select "WIDE" mode for TV & Video mode, Write the
PMAX Data – 8 steps (for model with V-Compression
features only).
9. Set the PWL & BLBG back to (PWL: 01h and BLBG:
00h)
– 29 –
KV-XR29M50/XR29M80
VB3
VB4
80mV
VB2
VB1 = VB2 = VB3 = VB4
and .
3 6
to write the data.
-
VB3 VB4
80mV
VB2
VB1 = VB2 = VB3 = VB4
and of the
1 4
3
VR
BLACK
PAL NTSC
2.20 1.85
±0.03Vp-p ±0.03Vp-p
1.90 1.57
±0.003Vp-p ±0.03Vp-p
1.50 1.18
±0.003Vp-p ±0.03Vp-p
RM-W104
1
and .
6