Sony KV-XA34M60, Service Manual

Page: 38 / 94

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KV-XA34M60
RM-954
5-3. PICTURE QUALITY ADJUSTMENTS
SUB COLOR ADJUSTMENT
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 03 ‘SCL’ with
1
and
4
of the commander then adjust the VB2=VB3=VB4
3
and
6
.
6. Press
[MUTING]
→
-
of the commander to write the data.
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 01 "SHU" with
1
and
4
of the commander by
setting to Service Mode and adjust to VB1=VB2=VB3=VB4
with
3
and
6
.
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”.
6. Press
[MUTING]
→
-
of the remote commander to write the
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.
2. Using the
1
and
4
button, select category GEO (Service
Mode).
3. Raise/lower the data using the
3
and
6
buttons.
Select and adjust the following items to obtain optimum
image.
Service Item
GEO : 00 HPS H POSITION
01 HSZ H SIZE
02 PAP PIN AMP
03 TLT TILT
04 VPS V POSITION
05 VSZ V SIZE
06 SCO S CORRECTION
07 VLN V LINEARITY
08 BOW AFC BOW
09 AGL AFC ANGLE
0A UPN UPPER CORNER PIN
0B LPN LOWER CORNER PIN
WIDE MODE (50Hz)
4. Input PAL color bar.
5. Adjust condition change to WIDE MODE : ON.
6. Using the
1
and
3
button, select category GEO (Service
Mode).
7. Copy (item from normal mode (50Hz)) adjusted data for
the following item:
Service Item
GEO : 01 HSZ H POSITION
05 VSZ V POSITION
06 SCO S CORRECTION
07 VLN V LINEARITY
8. Raise/lower data using
3
and
6
buttons, select and
adjust the following items to obtain optimum image.
Service Item
GEO : 00 HPS H POSITION
02 PAP PIN AMP
03 TLT TILT
04 VPS V POSITION
08 BOW AFC BOW
09 AGL AFC ANGLE
0A UPN UPPER CORNER PIN
0B LPN LOWER CORNER PIN
9. After confirm WIDE MODE : ON – OFF.
10. Repeat same steps for NTSC input signal.
6. Press
[MUTING]
→
-
of the commander to write the data.
7. Adjust SAJ 1 "SHU" as step 3 to 6 when receiving TV mode.
VB1
VB2
VB3 VB4
VB1 = VB2 = VB3 = VB4
VB1
VB2 VB3 VB4
VB2 = VB3 = VB4
VB2 = VB3 = VB4 (Difference is within 70mV)
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.