Page 3-1
Convergence Adjustments in the VZ7 chassis are
divided into two major categories, Static and Dy-
namic. The Static Convergence Adjustment has not
changed. However, the Dynamic Convergence Ad-
justment has changed, due to using Advanced Digi-
tal Convergence circuitry.
Dynamic Convergence is performed in the Conver-
gence Adjustment Mode. Coarse Dynamic Adjust-
ments are performed first, followed by Fine Adjust-
ments. The digital circuitry, and Adjustment Proce-
dure provides a higher degree of raster geometry and
convergence correction over the entire picture, than
was possible in the past.
In addition to Dynamic Convergence, the Conver-
gence Mode is used to adjust HV Regulation and:
1) Set Initial Data Values for the:
• Convergence Waveform Generator
• Green Raster Coarse Geometry Adjust-
ments
• Red Dynamic Coarse Convergence Ad-
justments
• Blue Dynamic Coarse Convergence
Adjustments
• Dynamic Focus Settings
2) Perform most Raster Geometry Adjustments
• Width and Horizontal Linearity
• Pincushion Correction
• Skew (X axis tilt), and Tilt (Y axis tilt)
• Vertical Keystone
Note that Data Values and Adjustments for Raster
Geometry in the Circuit adjustment mode must be
set prior to performing Raster Geometry adjustments
in the Convergence adjustment mode. These proce-
dures are described in the Service Manual.
Section 3
Convergence Adjustments
Convergence Mode Description
To activate the Convergence Mode, press MENU-
1-2-5-9, in sequence. The screen changes to an in-
ternally generated Cross Hatch pattern. The Cross
Hatch is super imposed on the current selected sig-
nal source. To display the Cross Hatch with a black
background, prior to entering the Convergence
Mode, select an External Input with no signal ap-
plied as the source.
Once in the Convergence Mode, several Functions,
Modes or displays can be selected:
1) Pressing (1) (2) or (3) respectively acti-
vates a Red Green or Blue display
2) Pressing (6) activates the CONV-MISC
function
3) Pressing (5) activates the Coarse Adjust-
ment Mode
4) Pressing (4) activates the Fine Adjustment
Mode
The CONV-MISC Function is used to perform the
HV Regulation Adjustment, and to preset the data
values controlling the Convergence Waveform Gen-
erator. Table 3-1 lists the items and preset values
under CONV-MISC. Some of the data values are
model specific. Check the Service Manual for a spe-
cific model to verify the correct preset values.
As in the Service Adjustment Mode, the VIDEO but-
ton selects the Adjustment Item, and the ADJUST
buttons set the Data Value. In the Convergence Mode
it is not necessary to press ENTER to save data
changes. Changes are automatically saved when the
mode is terminated.
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