H-Trapezoid Adjustment; A Board Adjustment After Ic003 (Memory) Replacement - Sony KV-AR25M86 Service Manual

KV-AR25M86
RM-993
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
6.
(Service Mode).
7. Copy (item from normal mode (50Hz)) adjusted data for
the following item:
Service Item
GEO : 01
05
06
07
Raise/lower data using 3 and 6 buttons, select and
8.
adjust the following items to obtain optimum image.
Service Item
GEO : 00
02
03
04
08
09
0A
0B
9. After confirm WIDE MODE : ON – OFF.
10. Repeat same steps for NTSC input signal.
NORMAL MODE (60Hz)
1. Set to Service Mode.
2. Using the 1 and 4 buttons select category GEO (Service
Mode).
3. 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
WIDE MODE (60Hz)
4. Input monoscope signal.
5. Adjust condition change to WIDE MODE: ON.
6. Using the 1 and 4 button select category GEO (Service
Mode).
7. Copy (item from NORMAL MODE (60Hz)) adjusted data for
the following items:
Service Item
GEO : 01
05
06
07
HSZ H POSITION
VSZ V POSITION
SCO S CORRECTION
VLN V LINEARITY
HPS H POSITION
PAP PIN AMP
TLT TILT
VPS V POSITION
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
HSZ H SIZE
VSZ V SIZE
SCO S CORRECTION
VLN V LINEARITY
8. Raise/lower the data with the 3 and 6 buttons. Select and
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.
Note:
For Deflection Adjustment, set PICTURE MODE to "SOFT".

4-7. H-TRAPEZOID ADJUSTMENT

1. Receive cross hatch/dot signal.
2. Adjust RV1801 on C6 board to make H-Trapezoid distortion
best.
4-8. 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 return
5.
to the data that was set on the shipment from the factory.
(This will also cancel Service Mode.)
– 30 –
H POSITION
PIN AMP
TILT
V POSITION
AFC ANGLE
UPPER CORNER PIN
LOWER CORNER PIN
¡ -).
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