Read Sony KV-AR25M80A Service Manual online
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KV-AR25M80A
RM-952
3-3. PICTURE QUALITY ADJUSTMENTS
SUB COLOR ADJUSTMENT SCL
1. Select Video.
2. Input PAL Color Bar.
3. Set to following condition PICTURE 100%, BRIGHTNESS
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 3 ‘SCL’ with 1 and 4 of
the commander then adjust the VB2=VB3=VB4 3 and 6.
6. Add 6 steps and save the data.
7. Input NTSC Color Bar.
8. Repeat item 4 to 6.
9. Select "WIDE" mode, write the "SAME DATA- 3 STEPS" for
7. Input NTSC Color Bar.
8. Repeat item 4 to 6.
9. Select "WIDE" mode, write the "SAME DATA- 3 STEPS" for
both PAL and NTSC Color Bar input.
SUB HUE ADJUSTMENT (SHU)
1. Select Video.
2. Input NTSC3.58 Color Bar
3. Set to following condition PICTURE 100%, BRIGHTNESS
2. Input NTSC3.58 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 01 ‘SHU’ with 1 and 4
of the commander then adjust the VB1=VB2=VB3=VB4 3
and 6.
and 6.
6. Press
[MUTING]
→ - of the commander to write the data.
7. Adjust SAJ 01 "SHU" as step 2 to 5 when receiving TV mode.
VB1
VB2
VB3
VB4
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.
same line. Ideal difference level between VB2 and VB3 should be
within ± 110mV.
VB1
VB2
VB3
VB4
VB2 = VB3 = VB4
VB2 = VB3 = VB4 (FOR PAL SUB COLOR ADJUSTMENT)
(Difference is within 70mV)
(Difference is within 70mV)
3-4. DEFLECTION ADJUSTMENTS
NORMAL MODE (50Hz)
1. Set to Service Mode.
2. Using the 1 and 4 buttons select category GEO (Service
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
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 a PAL color-bar.
5.
Adjust condition change to WIDE MODE : ON.
6.
Using the 1 and 4 button, select category GEO
(Service Mode).
(Service Mode).
7.
Copy (item from normal mode (50Hz)) adjusted data for
the following item:
Service Item
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.
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.
110mV
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