CUC 1822/24/52Allgemeiner Teil / General Section
Alignment PreparationsAlignment Process
1.13 PictureInfocenter �> Special functions �> Service �> Code 8500Via the menu, select the geometry values for the vertical
geometry�> Geometrydeflection, then set the values for the horizontal deflection,
Feed in a test generator pattern or a standard test pattern infirst at 50Hz, then at 60Hz field frequency.
16:9 format via the aerial or use the integrated test pattern.
Feed in the geometry test pattern in Cinema mode.Via the menu, select the geometry values for the vertical
deflection, then set the values for the horizontal deflection,first
Attention:at 50Hz, then at 60Hz field frequency
The "Line shift" alignment influences the line phase.Now, with 4 or 3 button, move the picture into the centre of
Before this adjustment, set the horizontal amplitude to minimumthe raster. Re-adjust the horizontal amplitude according to
and if necessary correct the raster position with the "Shift plug".the test pattern.
Reset:Store:
The "Reset" menu contains:Call up "End without memory" and change with the button
- either the optimum picture geometry data entered during4 or 3 to "End with memory".
productionStore the setting with the "OK" button.
- or the average data set read out from the ROM if the TV
is switched on with the emergency data set.Whenever the TV is switched on the picture geometry is set
If the TV has been adjusted wrongly, these basic valuesto the value stored last.
can be loaded at any time as follows:
Call up Infocenter �> Special functions �> Service �>
Code 8500 �> Geometry �> Reset and confirm with "OK".
1.14 Adjustment of- Infocenter �> Special functions �> Service �>Set the coil L573 so that the pulse width of both oscillograms
the bridge coilCode 8500 �> Geometry.is the same.
L573- Set the horizontal amplitude (width) to minimum.
- Connect channel 1of the oscilloscope to the collector of
the transistor T572.
- Connect channel 2 of the oscilloscope between the
diodes D571 and D572.
1.15 LineSelect the convergence test pattern:With the focus control on the CRT panel adjust the
sharpnesshorizontal lines for maximum sharpness.
Contrast to maximumSubsequently, with the focus control on the focusing
Set the brightness so that the black background of the testpanel, adjust the vertical lines for maximum sharpness.
pattern is just brightening.Repeat.
Attention!
For measurements on the focusing panel use only sufficiently
insulated measuring cables and test probes with adequate
electric strength (eg. 100 : 1).
2. Picture Tube Panel
Measuring instruments: Oscilloscope with10:1 test probe, high-resistance voltmeter
Service works after replacement or repair of the picture tube panel: alignment 2.1 and 2.2
AlignmentPreparationsAlignment Process
2.1.White balanceBlack Stretch set to "off" (Picture Menu)With the 4 3 buttons set the VG (amplification green) and
Infocenter �> Special functions �> Service �> Code 8500VB (amplification blue) values so that the white rectangular
�> White balancearea in the middle of the picture becomes achromatic.
Store with "OK".
2.2.Screen grid- Feed in the test pattern.- With the control SG on the picture tube panel set the
voltage- Switch the TV receiver to AV mode.voltage to 162.5V?2.5V.
- Adjust the screen brightness with the remote control- If flyback lines are visible on the screen, reduce the
handset so that the grey aeras just become dark.voltage by 10V approximately.
- Connect the voltmeter (200 kW series resistance) to the
test points R, G, B to determine the test point with the
highest voltage level.
SchwarzwertBlack level
- Oscilloscope: measured test point
162.5V?2.5V105-110V
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