Sony BVM-2011P - [Focus adjustment]; [Convergence Adjustment]

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[ Focus adjustment]
1. Connector signal generator (TEKTRONIX 1410 and 1411).
2. Input a dot or cross-hatch signals.
3. Adjust the FOCUS control for best focus in the central portion
of the screen as shown in Fig. 1-5.
[Convergence Adjustment]
Preparation
Fig. 1-5.
1. Complete the signal generator connection and feed the dot and
cross-hatch signals.
2. Set the CONTRAST and BRIGHTNESS controls at the points
where the dots and the cross-hatch can be observed clearly.
3. Set the H. STATIC CENTER control (RV23) on the DC board
to mechanical center as shown in Fig. 1-6.
DC board
~ ~~~ ~ ~ ~~~ ~
~ ~~~ ~ ~ ~~~ ~
~ ~ - ~ ~ ~ ~~~ ~
~~~~~~~~
~~~~~~~~
RVS
V STATIC
CENTER
RV23
H STATIC
CENTER
* Mechanical center
[ Static Convergence]
• Horizontal Static Convergence
1. Adjust H. ST AT control of DCT BLOCK to match the con-
vergence of red and green in the horizontal direction at screen
center.
2. Perform the HMC correction when blue is out of convergence
in the same direction on all over the screen.
3. Move the BMC magnet to correct H. static convergence as
shown in Fig. 1-7.
• Vertical Static Convergnce
1. Adjust the V. STATIC CENTER (RVS) on the DC board to
match the convergence of red and greer, in the vertical direc-
tion at screen center.
2. When blue is out of the convergence in the same direction all
over the screen. perform the VMC correction.
3. Move the BMC magnet to correct static convergence as shown
in Fig. 1-7.
(
Hexapo/e )
Magnet
Fig. 1-7.
• HMC and VMC correction for BMC Magnet.
1. HMC (Horizontal, Mis, convergence) correction and motion of
the Electron Beam with the Hexapole Magnet.
HMC correction (A)
R G 8
0 0 0
1-..)___j
A.8
R G 8
0 0 0
~
A 8
HMC correction (8)
Fig. 1-8.
R G 8
0 00
~
A.8
R G 8
0 0 0
~
A 8
2. VMC (Vertical, Mis, convergence) correction and motion of the
Electron Beam with the Hexapole Magnet.
• • •
:~·.
VMC correction (A)
VMC correction (8)
-~-
• •
202 78
Fig. 1-6.
Fig. 1-9.
4-6