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CUC 2080 F
Alignment
1.7 Overscan
1.8 NTSC 3.6
1.9 Line Sharpness
only TV's
with
Focus Block
Line Sharpness
only TV's
without
Focus Block
2. Picture Geometry
Measuring instruments: Colour video generator, dual-channel oscilloscope with 10:1 test probe.
Service works after replacement or repair:
- Horizontal and vertical deflection and replacement of the picture tube: alignment 2.1, 2.2
- Bridge coil L53074: Only necessary after unskillful manipulation of the horizontal deflection: alignment 2.3
NVM IC82005: alignment 1.2 ...1.8, 2.1, 2.2, 3.1, 3.3
Start with the vertical slope when adjusting the geometry!
Alignment
2.1 Vertical Slope
2.2 Horizontal Shift
2.3 Bridge Coil
L53074
GRUNDIG Service
Downloaded from
www.Manualslib.com
Preparations
Only with IC TDA8843-N2 or TDA8844-N2 as well as with
Philips 72cm/84cm in 4:3 and 70cm/82cm in 16:9 format
picture tubes.
Call up the dialog line "Overscan" via " " (DIALOG
CENTER) –> "OK" –> SERVICE –> "OK" –> Service Code
"8500".
Call up the dialog line "NTSC 3,6" via " " (DIALOG
CENTER) –> "OK" –> SERVICE –> "OK" –> Service
Code "8500".
- Feed in a convergency test pattern.
- Set the16:9 picture format (with 16:9 TV sets).
- Contrast ( ) to maximum.
- Set the screen brightness ( ) so that the black
background of the test pattern just starts to brighten.
- Feed in a convergency test pattern.
- Set the16:9 picture format (with 16:9 TV sets).
- Contrast ( ) to maximum.
- Set the screen brightness ( ) so that the black
background of the test pattern just starts to brighten.
Preparations
Call up the "Vertical Slope" menu via " " (DIALOG
CENTER) –> "OK" –> SERVICE –> "OK" –> Service
Code "8500" –> "GEOMETRY" –> "OK".
Max. brightness.
Call up dialog line "Horizontal Width" via " " (DIALOG
CENTER) –> "OK" –> SERVICE –> "OK" –> Service Code
"8500" –> "GEOMETRY" –> "OK" and reduce the width of
the picture using button "
Call up dialog line "Horizontal Shift".
Bridge coil L53074 is adjusted in the factory and this
setting must not be changed.
Call up dialog line "Horizontal Width" via " " (DIALOG
CENTER) –> "OK" –> SERVICE –> "OK" –> Service Code
"8500" –> "GEOMETRY" –> "OK".
Set Horizontal Width to minimum.
Oscilloscope channel 1: collector T53001.
Oscilloscope channel 2: cathode D53072.
manuals search engine
Set to "off" with button "
Dialog line "End", terminate "with mem.".
Set to "off" or "on" with button "
on the type of television receiver.
Dialog line "End", terminate "with mem.".
With focus control Focus 1 adjust the horizontal lines in the
middle of the screen to minimum vertical width.
Subsequently, with focus control Focus 2, adjust the vertical
lines approx. 5cm from the right and left picture edge to
minimum horizontal width.
With focus control
from the right and left picture edge to minimum horizontal
width.
The sharpness in the middle must not seem to be worse
than the sharpness at the edges. If necessary, take an
average.
Adjust the center line of the test pattern in the dialog line
"Vertical Slope" (typ. 30...33) with button "
so that it is just still visible.
Press button " " twice (GEOMETRY –> SERVICE) and
terminate the dialog line "End" with "with mem.".
The picture geometry is adjusted to the value last stored
whenever the TV set is switched on.
Position the picture content in the middle of the raster using
button "
Re-adjust the horizontal width according to the test pattern.
With connector "ST-Shift" on the chassis (option), position
-" or "+
".
the test pattern in the middle of the screen.
Dependent on the scanning spread of the picture tube this
connector may be retrofitted, connected the other way
round, or the rating of the resistor may be changed.
Press button " " twice (GEOMETRY –> SERVICE) and
terminate the dialog line "End" with "with mem.".
The picture geometry is adjusted to the value last stored
whenever the TV set is switched on.
Check the oscillograms for the same pulse width and re-
adjust it if necessary with coil L53074.
Adjust the horizontal width according to the test pattern.
Alignement / Alignment
Alignment Process
-" or "+
".
-" or "+
" dependent
0
, adjust the vertical lines approx. 5cm
Alignment Process
-" or "+
".
-" or "+
"
9
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