Sony KV-AR25M50A Service Manual ▷ View online
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17
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KV
-AR25M50A
-AR25M50A
RM-952
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NOTE
•
•
shaded items are fixed data.
• Standard data listed on the Adjustment Item Table are reference values, therefore it may be different for each model and for each mode.
• Note for Different Data
Those are the standard data values written on the microprocessor. Therefore, the data values of the modes
and stored respectively in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some items.
and stored respectively in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some items.
Adjustment Item Table
– 18 –
KV-AR25M50A
RM-952
ITEM INFORMATION
No. OPB0 OP1
No. OPB0 OP1
Item
KV-AR25M50A
M
1
D/K
1
I
1
B/G
1
2nd Lang
1
SECAM
1
XTAL 3.58
1
XTAL 4.43
1
AV Input
00 = no AV Input
01 = 1 AV Input
10 / 11 = 2 AV Input
DVD Input
Effective only when “AV Input” is set to 2 AV Input
Dis Fav.
Disable Favorite Channel (Only Effective For 21” & 14” Models Only)
No. OPB1 OP2
Item
KV-AR25M50A
0
1
DVD Input
1
Dis Fav.
0
Thai Bil.
0
HDEV
0
NICAM
0
AV Input
TOP
0
Pic Rot
*1
Picture Rotation Feature Switch
0 = disabled, 1 = enabled
2199 Curve
*1
2199 Volume Curve Selection
0 = Others, 1= 2199 Volume Curve.
Auto PIC
Auto Picture Improvement
0 = inactive, 1 = active
A-TVsys
Auto TV System in Auto Program0 = disabled, 1 = enabled
US ST
USA Stereo
0 = disabled,
1 = enabled
AV Mono
*1
AV Mono models, 0 = Stereo, 1 = Mono (No Balance & Surround selection).
11 Key
Front Key Selection
0 = 7 key model, 1 = 11 key model
Color SW
*2&*1
Color Data Selection in Dynamic Mode
0 = 65 (No PIP), 1 = 57 (PIP)
Note:
*1
- For XA21/XG25 Models Only
*2
- For XA34/29/25 Models Only
No. OPB2 OP3
Item
KV-AR25M50A
Colour SW
*
2&*1
1
11 Key
0
AV Mono
*1
0
US ST
0
A-TVsys
0
Auto PIC
1
2199 Curve
*1
0
Pic Rot
*1
1
AP_XG
*1
To select the XG AP (board B6) )
0: No;
1 = Yes
Note:
*1
- For XA-21 / XG25 Models Only
No. OPB3 *OP4
Item
KV-AR25M50A
(unused)
0
AP_XG
*1
1
(unused)
0
(unused)
0
NOTE:
When Bit 7, 6 & 5 = 000, Only PAL color system is selected.
When Bit 7 is selected, Auto, PAL & NTSC 4.43 Color system is enable
When Option is single color system, Color system cannot be changed & “AUTO” will not be displayed.
When Bit 7 is selected, Auto, PAL & NTSC 4.43 Color system is enable
When Option is single color system, Color system cannot be changed & “AUTO” will not be displayed.
(unused)
0
(unused)
0
(unused)
0
(unused)
0
– 19 –
KV-AR25M50A
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
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
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
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
– 20 –
KV-AR25M50A
RM-952
3-5. H-TRAPEZOID ADJUSTMENT
1.
Receive cross hatch/dot signal.
2.
Adjust RV1801 on C6 board to make H-Trapezoid distortion
best.
best.
3-6. 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.
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 ([MUTING]
shows the normal picture.
In cases where items are not well adjusted, rectify the fine
adjustment.
Write the data per each item number ([MUTING]
→ -).
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.
02" (OP3) and "OPB 03" (OP4) 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.
to the data that was set on the shipment from the factory.
(This will also cancel Service Mode.)
NORMAL MODE (60Hz)
11. Input 525/60 Hz signal.
12. Using the 1 and 4 buttons select category GEO (Service
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
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 (60Hz)
14. Input NTSC Color Bar
15. Adjust condition change to WIDE MODE: ON.
16. Using the 1 and 4 button select category GEO (Service
15. Adjust condition change to WIDE MODE: ON.
16. Using the 1 and 4 button select category GEO (Service
Mode).
17. Copy (item from NORMAL MODE (60Hz)) adjusted data for
the following items:
Service Item
GEO : 01
HSZ
H SIZE
05
VSZ
V SIZE
06
SCO
S CORRECTION
07
VLN
V LINEARITY
18. 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
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
19. After confirm WIDE MODE : ON – OFF.
Click on the first or last page to see other KV-AR25M50A service manuals if exist.