Picture Quality Adjustments; Display Position Adjustment; Deflection Adjustment - Sony KV-XA29M31 Service Manual

KV-XA29M31/XA29M50/
XA29M61/XA34M31
RM-954

5-3. PICTURE QUALITY ADJUSTMENTS

SUB COLOR ADJUSTMENT (KV-XA25/XA29)
1. Select Video.
2. Input a PAL color-bar.
3. Set to the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
4. Connect an oscilloscope to pin 1 (B OUT) of CN305, A board.
5. Set to Service Mode and select SAJ 3 'SCL' with 1 and 4 of
the commander then adjust to VB2=VB3=VB4 with 3 and
6.
¡ - of the commander to write the data.
[MUTING]
6. Press
7. Adjust SAJ 3 'SCL' as step 3 to 5 when receiving NTSC color-
bar.
8. Select the 'Wide' mode, write the 'same data-3 steps' for both
PAL and NTSC input.
VB1
VB2 = VB3 = VB4 (Difference is within 70mV)
SUB COLOR ADJUSTMENT (KV-XA34)
1. Select Video.
2. Input PAL Color Bar
3. Set to following condition PICTURE 100%, BRIGHTNESS
50%, Color 50%.
4. Connect an oscilloscope to pin 1 (BOUT) of CN305, A Board.
5. Set the service mode and select SAJ 3 'SCL' with 1 and 4 of
the commander then adjust the VB2=VB3=VB4 3 and 6.
¡ - of the commander to write the data.
[MUTING]
6. Press
7. Add 6 steps and save the data.
8. Input NTSC Color Bar to the TV set and repeat items (3 to 7).
9. Select "WIDE" mode, write the "SAME DATA" for both PAL
and NTSC Color Bar input.
SUB HUE ADJUSTMENT
1. Select Video 1.
2. Input a NTSC 3.58 color-bar, video into Video 1.
3. Set the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
4. Connect an oscilloscope to pin 1 (B OUT) of CN305, A board.
5. Select SAJ 1 "SHU" with 1 and 4 of the commander by
setting to Service Mode and adjust to VB1=VB2=VB3=VB4
with 3 and 6.
VB1
VB1 = VB2 = VB3 = VB4
The highest level of VB1,VB2,VB3,VB4 must be aligned
at the same line. Ideal difference level between VB2 and
VB3 should be within ± 110mV.
¡ - of the commander to write the data.
[MUTING]
6. Press
7. Adjust SAJ 1 "SHU" as step 3 to 6 when receiving TV mode.
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VB4
VB2 VB3
VB2 = VB3 = VB4
VB3
VB4
VB2

5-4. DISPLAY POSITION ADJUSTMENT

PIP POSITION
(Not used for these models)
1. Input a PAL color-bar.
2. Press PIP button of the remote commander to set the PIP
picture.
3. Set to Service Mode.
4. Use 1 and 4 of the remote commander to select PIP 1 "PPH"
and use 3 and 6 to set data "15".
5. Select PIP 2 "PPV" to set data "2E".
¡ - of the remote commander to write the
[MUTING]
6. Press
data.
7. Use the screen display menu changing the PIP position to check
the PIP position.

5-5. DEFLECTION ADJUSTMENT

NORMAL MODE (50Hz)
1. Set to Service Mode.
Using the 1 and 4 button, select category GEO (Service
2.
Mode).
Raise/lower the data using the 3 and 6 buttons.
3.
Select and adjust the following items to obtain optimum
image.
Service Item
GEO : 00 HPS
01 HSZ
02 PAP
03 TLT
04 VPS
05 VSZ
06 SCO
07 VLN
08 BOW AFC BOW
09 AGL
0A UPN
0B LPN
WIDE MODE (50Hz)
4. Input PAL color bar.
5. Adjust condition change to WIDE MODE : ON.
Using the 1 and 3 button, select category GEO (Service
6.
Mode).
7. Copy (item from normal mode (50Hz)) adjusted data for
the following item:
Service Item
GEO : 01 HSZ
05 VSZ
06 SCO
07 VLN
Raise/lower data using 3 and 6 buttons, select and
8.
adjust the following items to obtain optimum image.
Service Item
GEO : 00 HPS
02 PAP
03 TLT
04 VPS
08 BOW AFC BOW
09 AGL
0A UPN
0B LPN
9. After confirm WIDE MODE : ON – OFF.
10. Repeat same steps for NTSC input signal.
– 40 –
H POSITION
H SIZE
PIN AMP
TILT
V POSITION
V SIZE
S CORRECTION
V LINEARITY
AFC ANGLE
UPPER CORNER PIN
LOWER CORNER PIN
H POSITION
V POSITION
S CORRECTION
V LINEARITY
H POSITION
PIN AMP
TILT
V POSITION
AFC ANGLE
UPPER CORNER PIN
LOWER CORNER PIN