Picture Quality Adjustment; Deflection Adjustment; A Board Adjustment After Ic003 (Memory) Replacement - Sony TRINITRON KV-XA21M85 Service Manual

4-3. PICTURE QUALITY ADJUSTMENTS
SUB COLOR ADJUSTMENT
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 '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 '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
VB2 = VB3 = VB4
SUB HUE ADJUSTMENT
1. Select Video.
2. Input a NTSC 3.58 color-bar, 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 O1 "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 VB2
VB1 = VB2 = VB3 = VB4
¡ - of the commander to write the data.
[MUTING]
6. Press
7. Adjust SAJ O1 "SHU" as step 3 to 6 when receiving TV
mode.
VB3 VB4

4-4. DEFLECTION ADJUSTMENT

NORMAL MODE (50Hz)
1. Set to Service Mode.
Using the 1 and 4 button, select category GEO
2.
(Service 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
01
02
03
04
05
06
07
08
09
0A
0B
NORMAL MODE (60Hz)
11. Input 525/60Hz signal.
12. Using the 1 and 4 buttons select category GEO (Service
Mode).
13. Select and adjust the following items to obtain obtimum
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
Note:
For Deflection Adjustment, set PICTURE MODE to "SOFT".
4-5. A BOARD ADJUSTMENT AFTER IC003
(MEMORY) REPLACEMENT
1. Enter to Service Mode.
Press commander buttons 5 and - (Data Initialize), and
2.
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 fine
adjustment.
Write the data per each item number (
4. Select item numbers "OPB00" (OP1), "OPB01" (OP2),
"OPB 02" (OP3) and "OPB 03" (OP4) respectively set the
bit per model with command buttons 3 and 6.
Press commander buttons 8 and - (Test Normal) to
5.
return to the data that was set on the shipment from the
factory.
(This will also cancel Service Mode.)
– 33 –
HPS H POSITION
HSZ H SIZE
PAP PIN AMP
TLT TRAPEZIUM
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 TRAPEZIUM
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]
KV-XA21M85
RM-952
+-).