Picture Quality Adjustments; Deflection Adjustment; H-Trapezoid Adjustment; A Board Adjustment After Ic003 (Memory) Replacement - Sony Trinitron KV-XG29M90 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 set-
ting 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 (Service
3.
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
– 33 –
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
5. Input 525/60Hz signal.
Using the 1 and 4 button select category GEO (Service
6.
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 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

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.)
KV-XG29M90
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
H SIZE
PIN AMP
TILT
V POSITION
V SIZE
S CORRECTION
V LINEARITY
AFC ANGLE
UPPER CORNER PIN
LOWER CORNER PIN
[MUTING]
+-).
RM-952