Sony KV-29FQ65B Service Manual ▷ View online
21
GREEN
BLUE
RED
(1) Screen centre convergence [Static convergence]
1.
Input a dot pattern signal from the pattern generator.
2.
Normalize the picture setting.
3.
[Moving vertically], adjust the V.STAT magnet so that the
vertical red, green and blue dots coincide at the centre of the
screen.
vertical red, green and blue dots coincide at the centre of the
screen.
3-2. Convergence
By opening or closing the V.STAT magnet, the red green and blue
dots move in the direction indicated below.
dots move in the direction indicated below.
Note:
Do not adjust the H.STAT by rotating the V.STAT
magnets as this can affect the focus setting.
magnets as this can affect the focus setting.
B
G
R
B
G
R
Fig.3-5
Purity magnets
Align pips on
each magnet
each magnet
Fig.3-4
Align both Purity magnets
to the vertical position
to the vertical position
Center dot
R
G
B
R
G
B
C Board
RV5375 (H STAT)
H STAT Convergence
(on mount side)
H STAT Convergence
(on mount side)
H STAT
convergence
control
V.STAT Vertical Static Magnet
Purity control magnets
Purity control corrects
this area
this area
Disk magnets or
rotatable disk
magnets correct
these areas (a-d)
rotatable disk
magnets correct
these areas (a-d)
Deflection yoke positioning
corrects these areas
corrects these areas
a
c
d
b
Disk Magnets
22
4.
Correction for HMC [Horizontal mis-convergence] and VMC
[Vertical mis-convergence] by using the BMC [Hexapole] magnet.
[Vertical mis-convergence] by using the BMC [Hexapole] magnet.
a). HMC correction by BMC [Hexapole] magnet and movement of
the electron beam.
b). VMC correction by BMC [Hexapole] magnet and movement of
the electron beam.
Adjust the HAMP using HAMPL and HAMPR registers in the
Dynamic Convergence section of the service menu.
Dynamic Convergence section of the service menu.
HTIL correction can be performed by adding a THL correction
assembly to the Deflection yoke.
assembly to the Deflection yoke.
C < D
C = D
C > D
C = D
R
G
G
B
C
D
C
D
R
G
B
R
G
B
R
G
B
V M C c o r r e c t i o n ( A )
V M C c o r r e c t i o n ( B )
THL Correction assy
HAMP Adjustment
HTIL Adjustment
YCH Adjustment
H M C c o r r e c t i o n ( A )
H M C c o r r e c t i o n ( B )
A < B
A = B
R G
B
R G B
A > B
A = B
R
G B
R G B
TLV Adjustment
H-TRAP Adjustment
The H-TRAP should not be adjusted unless absolutely necessary as it
affects the TLV settings.
affects the TLV settings.
+
+
+
YCH VR
Deflection Yoke
+
+
+
TLV VR
Deflection Yoke
HTRAP VR
+
+
+
Deflection Yoke
23
3-3. Focus Adjustment
1.
Receive a television broadcast signal.
2.
Normalize the picture setting.
3.
Adjust the focus control located on the flyback transformer to
obtain the best focus at the centre of the screen.
Bring only the centre area of the screen into focus, the magenta-
ring appears on the screen. In this case, adjust the focus to
optimize the screen uniformly.
obtain the best focus at the centre of the screen.
Bring only the centre area of the screen into focus, the magenta-
ring appears on the screen. In this case, adjust the focus to
optimize the screen uniformly.
3-4. Screen (G2), White Balance
[Adjustment in the service mode using the remote
commander]
commander]
G2 adjustment [RV5376]
1.
Input a dot signal from the pattern generator.
2.
Set the Picture, Brightness and Colour to minimum.
3.
Apply 170V DC from an external power supply to the R, G and B
cathodes of the CRT.
cathodes of the CRT.
4.
Whilst watching the picture, adjust the G2 control RV5376
[SCREEN] located on the C Board to the point just before the
flyback return lines disappear.
[SCREEN] located on the C Board to the point just before the
flyback return lines disappear.
Layout of each control
Note : If you are unable to adjust the corner convergence properly,
this can be corrected with the use of permalloy magnets.
1.
Input an all-white signal from the pattern generator.
2.
Enter into the ‘Service Mode’ by pressing ‘TEST’, ‘TEST’ and
‘MENU’ ‘MENU’ on the Service Commander.
‘MENU’ ‘MENU’ on the Service Commander.
3.
Select ‘Backend’ from the on screen menu display and press
‘OK’.
‘OK’.
4.
The ‘Backend’ menu will appear on the screen.[See Page 26]
5.
Set the ‘Contrast’ to MAX.
6.
Set the ‘R-Drive’ to 41.
7.
Adjust the ‘G-Drive’ and the ‘B-Drive’ so that the white
balance becomes optimum.
balance becomes optimum.
8.
Press the ‘OK’ button to write the data for each item.
9.
Set the ‘Contrast’ to MIN.
10. Set the ‘R-Cutoff’ to 31.
11. Adjust the ‘G-Cutoff’, and the ‘B-Cutoff’ with the left and
11. Adjust the ‘G-Cutoff’, and the ‘B-Cutoff’ with the left and
right buttons on the remote commander so that the white balance
becomes optimum.
becomes optimum.
12. Press the ‘OK’ button to write the data for each item.
White balance adjustment for TV mode
Y-splitting axis correction magnet
V STAT convergence magnet
BMC (Hexaploe) magnet
Purity magnet
a-d: screen-corner
convergence defect
convergence defect
a
b
c
d
a
b
d
Permalloy Assy
X-4387-214-1
X-4387-214-1
c
Install the permalloy assembly
for the area that needs correcting.
for the area that needs correcting.
Convergence adjustment with permalloy
Focus
Control
Control
24
1.
Turn on the main power switch of the set while pressing P + (plus) and P - (minus) buttons on the front drop down control panel.
2.
‘TT’ will appear in the upper right corner of the screen.
3.
Press the ‘MENU’ button twice on the remote commander to obtain the service menu on the screen.
4.
Push the joystick up or down on the remote commander to select the adjustment item.
5.
Push the right button to proceed to the next menu.
6.
If the required adjustment item is ‘Deflection’, push the down button to move to ‘Deflection’.
7.
Push the joystick to the right to enter into ‘Deflection’.
8.
Change the data in order to comply with each standard.
Note :
•
•
Before performing any adjustments ensure that the correct model has been selected in the ‘Model Setting’ menu.
•
After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON.
SECTION 4
CIRCUIT ADJUSTMENTS
4-1. Electrical Adjustments
Service adjustments to this model can be performed using the supplied Remote Commander RM-893.
How to enter into the Service Mode
L/G/S/I R/D/D/D
MONO
+
+
P
_
_
s
4
4
4
SERVICE MENU
Initialising
Reset Devices
Monitoring
Device Register Setting
Special Adjustment
Reset Devices
Monitoring
Device Register Setting
Special Adjustment
Select :
Next Menu
INITIALISING
Model Setting
Destination Setting
Basic Setting
Feature Setting
Destination Setting
Basic Setting
Feature Setting
MONITORING
Device Status monitor
Error Monitor
Production Monitor
NVM Monitor
Format Monitor
CNI Monitor
Error Monitor
Production Monitor
NVM Monitor
Format Monitor
CNI Monitor
RESET DEVICES
Backend
Deflection
Ext Deflection
Dynamic Convergence
Colour Decoder 1
Feature Box
Field Memory
Audio/Video Switch
Sound
Deflection
Ext Deflection
Dynamic Convergence
Colour Decoder 1
Feature Box
Field Memory
Audio/Video Switch
Sound
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