Picture Quality Adjustment; Deflection Adjustment; H-Trapezoid Adjustment; A Board Adjustment After Ic003 (Memory) Replacement - Sony TRINITRON KV-XJ29M31 Service Manual

4-3. PICTURE QUALITY ADJUSTMENTS
SUB COLOR ADJUSTMENT
1. Input a PAL color-bar.
2. Set to the following condition:
PICTURE 100%, BRIGHTNESS 50%, COLOR 50%
3. Connect an oscilloscope to pin 1 (B OUT) of CN305, A board.
4. 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]
5. Press
6. Adjust SAJ 3 'SCL' as step 2 to 5 when receiving NTSC
color-bar.
VB1
VB2
VB2 = VB3 = VB4
VB2 = VB3 = VB4 (Difference is within 70mV)
SUB HUE ADJUSTMENT
1. Select Video 3.58.
2. Input a NTSC, color-bar, video into Video.
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
VB3
VB2
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

4-4. DEFLECTION ADJUSTMENT

1. Set to Service Mode.
2. Input PAL color bar.
Using the 1 and 4 button, select category GEO
3.
(Service Mode).
Raise/lower the data using the 3 and 6 buttons.
4.
Select and adjust the following items to obtain optimum
image.
VB4
VB3
VB4
Service Item
GEO : 00
01
02
03
04
05
06
07
08
09
0A
0B
5. Input 525/60Hz signal.
Using the 1 and 4 button select category GEO
6.
(Service Mode).
7. Select and adjust the following items to obtain optimum
image. Raise/lower the data with the 3 and 6 buttons.
Service Item
GEO : 00
01
02
03
04
05
06
07
08
09
0A
0B

4-5. H-TRAPEZOID ADJUSTMENT

1. Receive cross hatch/dot signal.
2. Adjust RV1801 on C6 board to make H-trapezoid distortion
best.
4-6. A BOARD ADJUSTMENT AFTER IC003
(MEMORY) REPLACEMENT
1. Enter to Service Mode.
2. Press commander buttons 5 and - (Data Initialize), and
2 and - (Data Copy) to initialize the data.
3. Call each item number and check if the respective screen
shows the normal picture.
In cases where items are not well adjusted, rectify the items
with fine adjustment.
Write the data per each item number (
4. Select item numbers "OPB0" (OP1), "OPB1" (OP2),
"OPB2" (OP3), "OPB3" (OP4) and respectively set the bit
per model with command buttons 3 and 6.
5. Press commander buttons 8 and - (Test Normal) to return
to the data that was set on the shipment from the factory.
(This will also cancel Service Mode.)
– 37 –
KV-XJ29M31/XJ29M50/XJ29M60/
XJ29M80/XJ29M81
HPS H POSITION
HSZ H SIZE
PAP PIN AMP
TLT TILT
VPS V POSITION
VSZ V SIZE
SCO S CORRECTION
VLN V LINEARITY
BOW AFC BOW
AGL AFC ANGLE
UPN UPPER CORNER PIN
LPN LOWER CORNER PIN
HPS H POSITION
HSZ H SIZE
PAP PIN AMP
TLT TILT
VPS V POSITION
VSZ V SIZE
SCO S CORRECTION
VLN V LINEARITY
BOW AFC BOW
AGL AFC ANGLE
UPN UPPER CORNER PIN
LPN LOWER CORNER PIN
[MUTING]
RM-952
+-).