CUC 2080 FAlignement / Alignment
AlignmentPreparations Alignment Process
1.7 OverscanOnly with IC TDA8843-N2 or TDA8844-N2 as well as withSet to "off" with button "V -" or "+ C".
Philips 72cm/84cm in 4:3 and 70cm/82cm in 16:9 format
picture tubes.Dialog line "End", terminate "with mem.".
Call up the dialog line "Overscan" via "6" (DIALOG
CENTER ) �> "OK" �> SERVICE �> "OK" �> Service Code
"8500".
1.8 NTSC 3.6Call up the dialog line "NTSC 3,6" via "6" (DIALOGSet to "off" or "on" with button "V -" or "+ C" dependent
CENTER) �> "OK" �> SERVICE �> "OK" �> Service on the type of television receiver.
Code "8500".
Dialog line "End", terminate "with mem.".
1.9 Line Sharpness- Feed in a convergency test pattern.With focus control Focus 1 adjust the horizontal lines in the
- Set the16:9 picture format (with 16:9 TV sets).middle of the screen to minimum vertical width.
only TV's- Contrast (W) to maximum.
with- Set the screen brightness (R) so that the black Subsequently, with focus control Focus 2, adjust the vertical
Focus Block background of the test pattern just starts to brighten.lines approx. 5cm from the right and left picture edge to
minimum horizontal width.
Line Sharpness- Feed in a convergency test pattern.With focus control 0, adjust the vertical lines approx. 5cm
- Set the16:9 picture format (with 16:9 TV sets).from the right and left picture edge to minimum horizontal
only TV's- Contrast (W) to maximum.width.
without- Set the screen brightness (R) so that the black The sharpness in the middle must not seem to be worse
Focus Block background of the test pattern just starts to brighten.than the sharpness at the edges. If necessary, take an
average.
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!
AlignmentPreparations Alignment Process
2.1 Vertical SlopeCall up the "Vertical Slope" menu via "6" (DIALOG Adjust the center line of the test pattern in the dialog line
CENTER ) �> "OK" �> SERVICE �> "OK" �> Service"Vertical Slope" (typ. 30�33) with button "V -" or "+ C"
Code "8500" �> "GEOMETRY" �> "OK".so that it is just still visible.
Press button "6" 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.
2.2 HorizontalShiftMax. brightness.Position the picture content in the middle of the raster using
Call up dialog line "Horizontal Width" via "6" (DIALOG button "V -" or "+ C".
CENTER) �> "OK" �> SERVICE �> "OK" �> Service CodeRe-adjust the horizontal width according to the test pattern.
"8500" �> "GEOMETRY" �> "OK" and reduce the width ofWith connector "ST-Shift" on the chassis (option), position
the picture using button "V -" or "+ C".the test pattern in the middle of the screen.
Call up dialog line "Horizontal Shift".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 "6" 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.
2.3 Bridge CoilBridge coil L53074 is adjusted in the factory and thisCheck the oscillograms for the same pulse width and re-
L53074setting must not be changed.adjust it if necessary with coil L53074.
Call up dialog line "Horizontal Width" via "6" (DIALOG
CENTER) �> "OK" �> SERVICE �> "OK" �> Service CodeAdjust the horizontal width according to the test pattern.
"8500" �> "GEOMETRY" �> "OK".
Set Horizontal Width to minimum.
Oscilloscope channel 1: collector T53001.
Oscilloscope channel 2: cathode D53072.
9GRUNDIG Service |
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